D38999/26WG16PNL - Corsair

R3118x Series

Low Voltage Detector with Individual SENSE Pin and Delay Function

No. EA-242-180420

OUTLINE

The R3118x is a voltage detector IC with individual sense pin, high det ector threshold accuracy and delay time,

and ultra-low supply current, which can be operated at an extremely low voltage and is used for system reset

as an example. Each of the IC consists of a voltage reference unit, a hysteresis comparator, resistors net for

detector threshold setting, an output driver transistor, and a delay circuit.

VDD supply pin for the IC and voltage supervisory sense pin are individual, therefore the output pin can keep

"L" level even if the sense pin volt age is going down to 0 V, or there is no indefi nite range for the sense pin.

Since a delay circuit is built-in, by connecting an external capacitor, any output delay time can be set. In the

R3118x, detector released delay time can be set, and detector delay time is not influenced by the external

capacitor for the delay time.

The detector threshold is fixed with high accuracy internally and does not require any adjustment. The

tolerance of the dete ct or t hreshold is ±22.5 mV (−VDET_S < 1.6 V) or ±1.5% (−VDET_S ≥ 1.6 V).

Minimum detector th reshold voltage is 0.6 V, ultra-low volt age detector threshold can be set. Output delay time

for the detector releas e can be set with high accura cy. The t olerance of the IC side is ±30% . T wo output types,

Nch. open drain type and CMOS type are available. If the sense pin voltage becomes to equal or lower than

the detector threshold voltage, the output voltage becomes "L", and if the sense pin voltage becomes to

released voltage, the output voltage becomes "H" aft er t he set delay time.

Three types of packages, SOT-23-5, SC-88A, and DFN(PLP)1212-6 are available.

FEATURES (1)

• Operating Voltage Range (Maximum Rating) .............. 1.0 V to 6.0 V (7.0 V)

• Supply Current(2) .......................................................... Typ. 0.4 µA (VSENSE ≥ +VDET, VDD = 6 V)

• Operating Temper ature Range .................................... −40°C to 85°C

• Detector Threshol d Range ........................................... 0.6 V to 5.0 V (0.1 V step)

• Accuracy Detector Thresh old ...................................... ±1.5% (-VDET_S ≥ 1.6 V), ±22.5 mV (-VDET_S < 1.6 V)

• Temperature-Drift Coefficient of Detecto r Threshold ·· Typ. ±30 ppm /°C

• Accuracy Detector Released ...................................... ±30%

• Temperature-Drift Coefficient of Detecto r Released ··· Typ. ±0.16 ppm/°C

• Output Types ................................................................ Nch Open Drain and CMOS

• Packages ..................................................................... DFN(PLP)1212-6, SC-88A , SOT-23-5

APPLICATIONS

• CPU and Logic Circuit R eset

• Battery Checker

• Window Comparator/Level Discrimination

• Battery Back-up Circuit

• Power Failure Detector

(1) Ta = 25°C, u nless otherwise specified.

(2) Consumption current through SENSE pin is not included.

R3118x

No. EA-242-180420

SELECTION GUIDE

The detector threshold, t he output ty pe and the packa ge ty pe for the IC can be selected at the user s’ request.

Selection Guide

Product Name

Package

Quantity per Reel

Pb Free

Halogen Free

R3118Kxx1∗-TR DFN(PLP)1212-6 5,000 pcs Yes Yes

R3118Qxx2∗-TR-FE SC-88A 3,000 pcs Yes Yes

R3118Nxx1∗-TR-FE SOT-23-5 3,000 pcs Yes Yes

xx : The detector threshol d can be designated in the range from 0.6 V (06) to 5.0 V (50) in 0.1 V step.

∗ : Designation of Output Type

(A) Nch Open Drain

BLOCK DIAGRA MS

R3118xxxxA (Nch. Open Drain Output)

Block Diagram

R3118xxxxC (CMOS Output)

Block Diagram

DOUT

VDD

Vref

GND

Delay

Circuit

SENSE

DOUT

VDD

REF

GND

Delay

Circuit

SENSE

R3118x

No. EA-242-180420

PIN DESCRIPTIONS

Top View

Bottom View

(mark side)

DFN(PLP)1212-6 Pin Con figuration SC-88A Pin Configuration SOT-23-5 Pin Configuration

DFN(PLP)1212-6 Pin Description

Pin No.

Symbol

Description

SENSE

Voltage Detector Volt age Sense Pin

GND

Ground Pin

Pin for External Capacitor (for setting output delay)

VDD

Input Pin

No Connection

DOUT

Output Pin ("L" at detection)

SC-88A Pin Description

Pin No.

Symbol

Description

DOUT

Output Pin ("L" at detection)

GND

Ground Pin

VDD

Input Pin

Pin for External Capacitor (for setting output delay)

SENSE

Voltage Detector Volt age Sense Pin

SOT-23-5 Pin Description

Pin No.

Symbol

Description

DOUT

Output Pin ("L" at detection)

VDD

Input Pin

GND

Ground Pin

Pin for External Capacitor (for setting output delay)

SENSE

Voltage Detector Volt age Sense Pin

R3118x

No. EA-242-180420

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings

Symbol

Item

Rating

Unit

Supply Voltage

0.3 to 7.0

SENSE

SENSE Pin Voltage

0.3 to 7.0

VDOUT

Output Voltage (R3118xxxxA)

0.3 to 7.0

Output Voltage (R3118xxxxC)

0.3 to V

+ 0.3

IDOUT

Output Current Nch Driver (Sink Current )

Output Current Pch Driver (Source Current)

PD Power

Dissipation(1)

DFN(PLP)1212-6

JEDEC STD.51-7

Test Land Patt ern

450

SC-88A

Standard Test Land Pattern

380

SOT-23-5

JEDEC STD.51-7

Test Land Patt ern

660

Junction Tem peratu re Range

40 to 125

Tstg

Storage Temperature Ran ge

55 to 125

ABSOLUTE MAXIMUM RATINGS

Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent

damages and may degrade the lifetime and safety for both device and system using the device in the field. The

functional operation at or over these absolute maximum ratings is not assured.

RECOMMENDED OP ERATING CONDITIONS

Recommended Operating Conditions

Symbol

Item

Rating

Unit

Supply Voltage

1.0 to 6.0

Operating Temperature Ra nge

−

40 to 85

°C

RECOMMENDED OPERATING CONDITIONS

All of electronic equipment should be designed that the mounted semiconductor devices operate within the

recommended operating conditions. The semiconductor devices cannot operate normally over the recommended

operating conditions, even if wh en they are used over such conditions by momentar y electronic noise or surge. And

the semiconductor devices may receive serious damage when they continue to operate over the recommended

operating conditions.

(1) Refer to POWER DISSIPATION for detailed inf ormation.

R3118x

No. EA-242-180420

ELECTRICAL CHARACTERISTICS

VDD = 1 V to 6 V, unless ot herwise specified.

The specificati ons s urrounded by are guaranteed by design engineerin g at −40°C ≤ Ta ≤ 85°C.

R3118xxxxA/C Electrical Characteristi cs (Ta = 25°C)

Symbol

Item

Conditions

Min.

Typ.

Max.

Unit

-VDET Detector

Threshold

-VDET_S(1) < 1.6 V Ta = 25°C −VDET_S

−0.0225 −VDET_S

−VDET_S

+0.0225

−40°C ≤ Ta ≤ 85°C

−V

DET_S

−0.0375

−VDET_S

−V

DET_S

+0.0375

-VDET_S ≥ 1.6 V Ta = 25°C −VDET_S

× 0.985 −VDET_S

−VDET_S

× 1.015

−40°C ≤ Ta ≤ 85°C

−V

DET_S

× 0.975

−VDET_S

−V

DET_S

× 1.025

VHYS Detector

threshold

Hysteresis

Ta = 25°C −VDET_S

× 0.040

−V

DET_S

0.055

−VDET_S

× 0.070 V

−40°C ≤ Ta ≤ 85°C

−V

DET_S

0.035

−V

DET_S

0.055

−V

DET_S

0.075

ISS Supply

Current(2)

SENSE

= 0 V, V

= 6 V

0.480

1.450

µA

VSENSE = 6 V, VDD = 6 V 0.400 1.200

RSENSE Sense Resistor VSENSE = 6 V, VDD = 6 V 9 34 58

MΩ

IDOUT Output Current

(Driver Output

Pin)

Nch.

VSENSE = 0 V

= 1 V, V

DOUT

= 0.1 V

0.150

= 3 V, V

DOUT

= 0.1 V

0.550

VDD = 5 V, VDOUT = 0.1 V 0.850

VDD = 1 V, VDOUT = 0.4 V 0.400

= 3 V, V

DOUT

= 0.4 V

2.100

= 5 V, V

DOUT

= 0.4 V

3.300

Pch

VSENSE = 6 V

(R3118xxxxC)

VDD = 1 V, VDOUT = 0.9 V 6

µA VDD = 3 V, VDOUT = 2.9 V 30

= 5 V, V

DOUT

= 4.9 V

ILEAK

Nch Driver

Leakage Current

(R3118xxxxA)

VSENSE = 6 V, VDD = 6 V, VDOUT = 6 V 80 nA

RDIS CD pin

Discharge Tr.

On Resistance

VSENSE = 6 V, VDD = 1 V, VCD = 0.4 V 2.200

6.200 kΩ VSENSE = 6 V, VDD = 3 V, VCD = 0.4 V 0.400

1.250

SENSE

= 6 V, V

= 5 V, V

= 0.4 V

0.250

0.800

(1) -VDET_S : Set Detector Threshold

(2) Consumption current through SENSE pin is not included.

R3118x

No. EA-242-180420

ELECTRICAL CHARACTERISTICS (continued)

VDD = 1 V to 6 V, unless ot herwise specified.

The specificati ons s urrounded by are guaranteed by design engineerin g at −40°C ≤ Ta ≤ 85°C.

R3118xxxxA/C Electrical Characteristi cs (Ta = 25°C)

Symbol

Item

Conditions

Min.

Typ.

Max.

Unit

tRESET

Detect Output

Delay Time

(1)

Ta = 25°C 80 µs

tDELAY Release Output

Delay Time(2)

Ta = 25

100

130

−40

C ≤ Ta ≤ 85

100

145

All of unit are test ed and spe cified un der lo ad condit ions s uch that Tj ≈ Ta = 25°C except for Detect or Output Del a y Time

and Release Output Delay Time.

(1) R3118xxxxC: In the case that a 0.022 µF capacitor is c onnected to the CD pin, the tim e interval from forc ing pulsive

voltage bet ween -VDET_S ×1.155 V and -VDET_S ×0.9 V to SENSE pin, to when the outp ut voltage of the DOUT pin will

reach from "H" to VDD/2.

R3118xxxxA: In the case t hat a 0.022 µF capacitor is c onnected to the C D pin and the DOUT pin is pulled up t o 5 V

with 470 kΩ, the time interv al from forcing p ulsi ve volta ge be tween –VDET_S×1.155 V and -VDET_S×0.9 V to SENSE pin,

to when the output voltage reaches from "H" to 2.5V.

(2) R3118xxxxC: In the case that a 0.022 µF capacitor is c onnected to the CD pin, the t ime interval from forc ing pulsive

voltage between -VDET_S×0.9 V and -VDET_S×1.155 V to SENSE pin, to when the output voltage of the DOUT pin will

reach from "L" to VDD/2.

R3118xxxxA: In the case t hat a 0.022 μF capacitor is connected to the CD pin a nd the DOUT pin is pulled up to 5 V

with 470 kΩ, the time interval from forcing pulsiv e voltage between -VDET_S ×0.9 V and -VDET_S x1.155 V to SENSE pin,

to when the output voltage reaches from "L" to 2.5 V.

R3118x

No. EA-242-180420

ELECTRICAL CHARACTERISTICS (continued)

The specificati ons s urrounded by are guaranteed by design engineerin g at −40°C ≤ Ta ≤ 85°C.

R3118xxxxA/C

Product

Name

-VDET [V]

-VHYS [V]

Ta = 25°C

-40°C ≤ Ta ≤ 85°C

Ta = 25°C

-40°C ≤ Ta ≤ 85°C

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

R3118x06xx

0.5775

0.6000

0.6225

0.5625

0.6000

0.6375

0.0240

0.0330

0.0420

0.0210

0.0330

0.0450

R3118x07xx

0.6775

0.7000

0.7225

0.6625

0.7000

0.7375

0.0280

0.0385

0.0490

0.0245

0.0385

0.0525

R3118x08xx

0.7775

0.8000

0.8225

0.7625

0.8000

0.8375

0.0320

0.0440

0.0560

0.0280

0.0440

0.0600

R3118x09xx

0.8775

0.9000

0.9225

0.8625

0.9000

0.9375

0.0360

0.0495

0.0630

0.0315

0.0495

0.0675

R3118x10xx

0.9775

1.0000

1.0225

0.9625

1.0000

1.0375

0.0400

0.0550

0.0700

0.0350

0.0550

0.0750

R3118x11xx

1.0775

1.1000

1.1225

1.0625

1.1000

1.1375

0.0440

0.0605

0.0770

0.0385

0.0605

0.0825

R3118x12xx

1.1775

1.2000

1.2225

1.1625

1.2000

1.2375

0.0480

0.0660

0.0840

0.0420

0.0660

0.0900

R3118x13xx

1.2775

1.3000

1.3225

1.2625

1.3000

1.3375

0.0520

0.0715

0.0910

0.0455

0.0715

0.0975

R3118x14xx

1.3775

1.4000

1.4225

1.3625

1.4000

1.4375

0.0560

0.0770

0.0980

0.0490

0.0770

0.1050

R3118x15xx

1.4775

1.5000

1.5225

1.4625

1.5000

1.5375

0.0600

0.0825

0.1050

0.0525

0.0825

0.1125

R3118x16xx

1.5760

1.6000

1.6240

1.5600

1.6000

1.6400

0.0640

0.0880

0.1120

0.0560

0.0880

0.1200

R3118x17xx

1.6745

1.7000

1.7255

1.6575

1.7000

1.7425

0.0680

0.0935

0.1190

0.0595

0.0935

0.1275

R3118x18xx

1.7730

1.8000

1.8270

1.7550

1.8000

1.8450

0.0720

0.0990

0.1260

0.0630

0.0990

0.1350

R3118x19xx

1.8715

1.9000

1.9285

1.8525

1.9000

1.9475

0.0760

0.1045

0.1330

0.0665

0.1045

0.1425

R3118x20xx

1.9700

2.0000

2.0300

1.9500

2.0000

2.0500

0.0800

0.1100

0.1400

0.0700

0.1100

0.1500

R3118x21xx

2.0685

2.1000

2.1315

2.0475

2.1000

2.1525

0.0840

0.1155

0.1470

0.0735

0.1155

0.1575

R3118x22xx

2.1670

2.2000

2.2330

2.1450

2.2000

2.2550

0.0880

0.1210

0.1540

0.0770

0.1210

0.1650

R3118x23xx

2.2655

2.3000

2.3345

2.2425

2.3000

2.3575

0.0920

0.1265

0.1610

0.0805

0.1265

0.1725

R3118x24xx

2.3640

2.4000

2.4360

2.3400

2.4000

2.4600

0.0960

0.1320

0.1680

0.0840

0.1320

0.1800

R3118x25xx

2.4625

2.5000

2.5375

2.4375

2.5000

2.5625

0.1000

0.1375

0.1750

0.0875

0.1375

0.1875

R3118x26xx

2.5610

2.6000

2.6390

2.5350

2.6000

2.6650

0.1040

0.1430

0.1820

0.0910

0.1430

0.1950

R3118x271x

2.6595

2.7000

2.7405

2.6325

2.7000

2.7675

0.1080

0.1485

0.1890

0.0945

0.1485

0.2025

R3118x28xx

2.7580

2.8000

2.8420

2.7300

2.8000

2.8700

0.1120

0.1540

0.1960

0.0980

0.1540

0.2100

R3118x29xx

2.8565

2.9000

2.9435

2.8275

2.9000

2.9725

0.1160

0.1595

0.2030

0.1015

0.1595

0.2175

R3118x30xx

2.9550

3.0000

3.0450

2.9250

3.0000

3.0750

0.1200

0.1650

0.2100

0.1050

0.1650

0.2250

R3118x31xx

3.0535

3.1000

3.1465

3.0225

3.1000

3.1775

0.1240

0.1705

0.2170

0.1085

0.1705

0.2325

R3118x32xx

3.1520

3.2000

3.2480

3.1200

3.2000

3.2800

0.1280

0.1760

0.2240

0.1120

0.1760

0.2400

R3118x33xx

3.2505

3.3000

3.3495

3.2175

3.3000

3.3825

0.1320

0.1815

0.2310

0.1155

0.1815

0.2475

R3118x34xx

3.3490

3.4000

3.4510

3.3150

3.4000

3.4850

0.1360

0.1870

0.2380

0.1190

0.1870

0.2550

R3118x35xx

3.4475

3.5000

3.5525

3.4125

3.5000

3.5875

0.1400

0.1925

0.2450

0.1225

0.1925

0.2625

R3118x36xx

3.5460

3.6000

3.6540

3.5100

3.6000

3.6900

0.1440

0.1980

0.2520

0.1260

0.1980

0.2700

R3118x37xx

3.6445

3.7000

3.7555

3.6075

3.7000

3.7925

0.1480

0.2035

0.2590

0.1295

0.2035

0.2775

R3118x38xx

3.7430

3.8000

3.8570

3.7050

3.8000

3.8950

0.1520

0.2090

0.2660

0.1330

0.2090

0.2850

R3118x39xx

3.8415

3.9000

3.9585

3.8025

3.9000

3.9975

0.1560

0.2145

0.2730

0.1365

0.2145

0.2925

R3118x40xx

3.9400

4.0000

4.0600

3.9000

4.0000

4.1000

0.1600

0.2200

0.2800

0.1400

0.2200

0.3000

R3118x41xx

4.0385

4.1000

4.1615

3.9975

4.1000

4.2025

0.1640

0.2255

0.2870

0.1435

0.2255

0.3075

R3118x42xx

4.1370

4.2000

4.2630

4.0950

4.2000

4.3050

0.1680

0.2310

0.2940

0.1470

0.2310

0.3150

R3118x43xx

4.2355

4.3000

4.3645

4.1925

4.3000

4.4075

0.1720

0.2365

0.3010

0.1505

0.2365

0.3225

R3118x44xx

4.3340

4.4000

4.4660

4.2900

4.4000

4.5100

0.1760

0.2420

0.3080

0.1540

0.2420

0.3300

R3118x45xx

4.4325

4.5000

4.5675

4.3875

4.5000

4.6125

0.1800

0.2475

0.3150

0.1575

0.2475

0.3375

R3118x46xx

4.5310

4.6000

4.6690

4.4850

4.6000

4.7150

0.1840

0.2530

0.3220

0.1610

0.2530

0.3450

R3118x47xx

4.6295

4.7000

4.7705

4.5825

4.7000

4.8175

0.1880

0.2585

0.3290

0.1645

0.2585

0.3525

R3118x48xx

4.7280

4.8000

4.8720

4.6800

4.8000

4.9200

0.1920

0.2640

0.3360

0.1680

0.2640

0.3600

R3118x49xx

4.8265

4.9000

4.9735

4.7775

4.9000

5.0225

0.1960

0.2695

0.3430

0.1715

0.2695

0.3675

R3118x50xx

4.9250

5.0000

5.0750

4.8750

5.0000

5.1250

0.2000

0.2750

0.3500

0.1750

0.2750

0.3750

R3118x

No. EA-242-180420

THEORY OF OPERATION

R3118xxxxA (Nch. OPEN-DRAIN OUTPUT)

ref

VDD

DOUT

GND

Tr.1

Nch

Comparator

∗) DOUT pin should be pulled-up to

VDD or an externa l voltage le vel.

Delay

Circuit

SENSE

R3118xxxxA Block Diagram with External Capacitor

DET

−V

DET

DDL

GND

delay

reset

Supply Voltage (V

)

Output Voltage

OUT

)

SENSE Pin Voltage

SENSE

)

Detector Threshold

Hysteresis

(1)

Detector T hr es hol d

Released Voltage

Pull-up Voltage

Detect Output Delay Time

Release Output Delay Time

Minimum Operating

Voltage

Step

Comparator (−)

Pin Input Voltage

Comparator Output

Tr.1

OFF

Output Tr.

Nch

OFF

×V

SENSE

Rb+Rc

Ra+Rb+Rc

×V

SENSE

Ra+Rb

Operation Diagram

Step 1. The output voltage is equal to t he pull-up voltage.

Step 2. At Point "A", VREF ≤ VSENSE x (Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is

reversed from "L" to "H", therefore the output voltage becomes the GND level. The voltage level of

Point A means a detector threshold voltage (-VDET). (When the supply voltage is lower than the

minimum operating voltage, the operation of the output transistor becomes indefinite. The output

voltage is equal to t he GND level.)

Step 3. At Point "B", VREF ≤ VSENSE x Rb/(Ra+Rb) is true, as a result, the out put of comparator is reve rsed from

"H" to "L", then the output voltage i s equal t o the pull-up v oltage. T he voltage l evel of Point B means a

released voltage ( +VDET).

(1) The difference between a released voltage and a detect or threshold voltage is a detector thres hold hysteres is.

R3118x

No. EA-242-180420

R3118xxxxC (CMOS OUTPUT)

ref

Tr.1

Comparator

Delay

Circuit

SENSE

OUT

GND

Nch

Pch

R3118xxxC Block Diagram with External Capacitor

GND

tDELAY

tRESET

DET

−V

DET

DDL

Supply Voltage (V

)

Output Voltage

OUT

)

SENSE Pin Volt age

SENSE

)

Detector Threshold

Hysteresis

(1)

Detector T hr es hol d

Released Voltage

Detect Output Delay Time

Release Output Delay Time

Minimum Operating

Voltage

Supply Voltage

)

Step

Comparator (−)

Pin Input Voltage

Comparator Output

Tr.1

OFF

Pch

OFF

Output Tr.

Nch

OFF

×V

SENSE

Rb+Rc

Ra+Rb+Rc

×V

SENSE

Ra+Rb

Operation Diagram

Step 1. The output voltage is equal to t he supply voltage (VDD).

Step 2. At Point "A", VREF ≥ VSENSE × (Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is

reversed from "L" to "H", therefore the output voltage becomes the GND level. The voltage level of

Point A means a detector threshold voltage (-VDET). (When the supply voltage is lower than the

minimum operating voltage, the operation of the output transistor becomes indefinite. The output

voltage is equal to t he GND level.)

Step 3. At Point "B", VREF ≤ VSENSE × Rb/(Ra+Rb ) is true, as a result, t he output of comparat or is reversed from

"H" to "L", then the output voltage is equal to the supply voltage (VDD). The voltage level of Point B

means a released voltage (+VDET).

(1) The difference between a released voltage and a detect or threshold voltage is a detector thres hold hysteres is.

R3118x

No. EA-242-180420

WHEN POWER TO SENSE PIN TURNING-ON AFTER VDD PI N’S POWER-ON

SENSE pi n voltage

SENSE

Released Voltage

DET

Detector Threshold

-V

DET

Release Output

Delay Time (t

DELAY

)

Detect Output

Delay Time (t

RESET

)

DOUT pin voltage

DOUT

Time t

VDD pin voltage V

Time t

Indefinite

If a voltage is applied to SENSE pin after a power (in the range from 1 V to 6 V) is applied to VDD pin, DOUT

pin becomes "L" when the SENSE pin voltage is less than released voltage +VDET, ,and DOUT pin becomes

"H" when the SENSE pin v ol tage is equal or more than t he released voltage +V DET.

R3118x

No. EA-242-180420

WHEN POWER TO VDD PIN TURNING-ON AFTER SENSE PIN’S POWER-ON

SENSE pi n voltage

VSENSE

Released Voltage

+VDET

Detector Threshold

-VDET

Release Output

Delay Ti me (tDELAY)

Detect Output

Delay T ime (t

RESET

)

DOUT pin voltage

VDOUT

VDD pin voltage VDD

Release Output

Delay T ime (t

DELAY

)

Time t

Indefinite

In the case of the SENSE pin voltage is less than released voltage +VDET, when the VDD pin voltage becomes

to 1 V or more, "L" output of DOUT is determined. In case of the SENSE pin voltage is equal or more than the

released voltage +VDET, when the V DD pin voltage becomes to 1 V or more, "H" output of DOUT is determine d.

If the turn on speed of the supply voltage of the VDD pin up to 1 V is slower than the1 V/s, connect 0.001 µF

or more capacitor to CD pin, otherwise, t he output of DOUT pin may indefinit e.

TIMING CHART

Detector Threshold

Hysteresis

DELAY

GND

DDL

DET

Detector Threshol d

Released Voltage

Minimum Operating

Voltage

Pull-up Voltage

SENSE Pin Voltage

SENSE

)

Output Voltage

OUT

)

R3118xxxxA

DELAY

R3118xxxxC

RESET

Suppl y Vo ltage

)

Detector Threshold

Hysteresis

Supply Voltage

)

R3118x

No. EA-242-180420

OUTPUT DELAY OP ERATION

pin Threshold voltage

TCD

)

Released Voltage (+V

DET

)

GND

Detector Threshold (-V

DET

)

Detect Output Delay Time

RESET

)

Release Output Delay Time

DELAY)

SENSE pin volta ge

GND

Time t

pin voltage

OUT

pin voltage

Time t

Output Delay Operation Diagram

A higher voltage than the released voltage is forced to the SENSE pin, charge to the capacitor connected to

CD pin is sta rted, then the CD pin voltage increases. Until C D pin voltage rea ches to CD pin thres hold voltage,

the output of DOUT pin voltage keeps "L", then when CD pin voltage is higher than CD pin threshold voltage,

the DOUT pin voltage changes from "L" to "H". The released output delay time means the time interval from

when the released voltage threshold or more voltage level is forced to SENSE pin to when DOUT voltage

changes from "L" to "H".

When the voltage of DOUT pin reverses from "L" to "H", the discharge of the external capacitor connected to

CD pi n starts. Ther efore, the time int erval from when t he volt age lower tha n the det ector thre shold is for ced t o

SENSE pin, to when the o utput v olt age rever ses from " H" to " L", or detector out put delay tim e is constant a nd

independent from the external capacitance value. However, after the DOUT pin voltage reverses from "L" to

"H", if a voltage lower than the detector threshold is forced to SENSE pin before the capacitor connected to

CD pin is discharged, delay time will increase. The time interval (tDIS) from when the capacitor connected to

CD pin is discharged completely to when the capacitor is charged to a certain CD pin voltage (described as

VCD herein) can be calculated by power supply voltage (VDD), external capacitance (CD), on resistance of the

CD pin discharge transistor (RDIS) as in the next f ormula:

tDIS = -RDIS × CD × ln(VCD / (VDD × 0.45))

RELEASED OUTPUT DELAY TIM E

The release output delay time (tDELAY) can be calculated as in the next formula with an external capacitance

value (CD):

tDELAY(s) = 4.545 × 106 × CD(F)

During the released delay operation, only a small current will charge the external capacitor connected to CD

pin. If the leakage current between CD pin and GND is large, the released delay time may increase or the

detector may not be released. And, if the VDD pin voltage varies, the released output delay time will be also

shift.

R3118x

No. EA-242-180420

APPLICATION INFORMATION

TYPICAL APPLICATION

R3118xxxxA (Nch . Open-drain Output) CPU Reset Circui t

VDD

RESET

CPU

GND

VDD

470kΩ

VDD

SENSE

R3118xxxxA

DOUT

GND

When using a shared input voltage between R3118 x and CPU

VDD

RESET

CPU

GND

VDD2

470kΩ

VDD

SENSE

R3118xxxxA

DOUT

GND

DD1

When using different input v ol tages between R3118x and CPU

R3118xxxxC (CMOS Output) CPU Reset Circuit

VDD

RESET

CPU

GND

VDD

SENSE

R3118xxxxC

DOUT

GND

R3118x

No. EA-242-180420

TECHNICAL NOTES

WHEN CONNECTING RESISTORS TO THE DEVICE’S INPUT PIN

When connecting a resistor (R1) to an input of this device, the input voltage decreases by [Device’s

Consumption Current] x [Resistance Value] only. And, the cross conduction current(1), which occurs when

changing from the detecting state to the release state, is decreased the input voltage by [Cross Conduction

Current] x [Resistance Value] only. And then, this device will enter the re-detecting state if the input voltage

reduction is larger than the difference between t he detector voltage and t he released voltage.

When the input resistance value is large and t he VDD is gone up at mildl y in the vicinity of the re leased voltage,

repeating the above operation may result in the occurrence of output.

As shown in Figure A/B, set R1 to become 100 kΩ or less as a guide, and connect CIN(2) of 0.1 μF and more to

between the input pi n and GND. Besides, m ake evalu ations incl uding temperat ure propert ies under t he actual

usage condition, with using the evaluation board like this way. As result, make sure that the cross conduction

current has no problem.

GND

OUT pin

IN(2

）

Figure A

Voltage

Detector

GND

OUT pin

IN(

）

Figure B

Voltage

Detector

(1) In the CMOS output type, a charging curre nt for OUT pin is included.

(2) Note the bias dependence of c apac i tors.

R3118x

No. EA-242-180420

TYPICAL CHARACTERISTICS

Note: Typical Characteristics are intended to be used as referenc e data; they are not guara nteed.

1) Supply Current vs. Supply Voltage

R3118xxxxA/C (VSENSE = 0 V)

R3118xxxxA/C (VSENSE = 6 V)

2) Detector Threshold vs. Temperature

R3118x06xA/C (VDD = 5.3 V)

R3118x27xA/C (VDD = 5.3 V)

R3118x50xA/C (VDD = 5.3 V)

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0123456

Supply Current ISS (μA)

Supply Voltage V DD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0246

Supply Current ISS (μA)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.591

0.600

0.609

0.618

0.627

0.636

0.645

-50 -25 025 50 75 100

Detector Threshold VDET (V)

Temperature Topt (°C)

-VDET

+VDET

2.660

2.700

2.741

2.781

2.822

2.862

2.903

-50 -25 0 25 50 75 100

Detector Threshold V

DET

(V)

Temperature Topt (°C)

-VDET

+VDET

4.925

5.000

5.075

5.150

5.225

5.300

5.375

-50 -25 025 50 75 100

Detector Threshold VDET (V)

Temperature Topt (°C)

-VDET

+VDET

R3118x

No. EA-242-180420

3) Detector Threshold vs. Supply Voltage

R3118x06xA/C

R3118x27xA/C

R3118x50xA/C

4) Hysteresis vs. Temperature

R3118x06xA/C (VDD = 5.3 V)

R3118x27xA/C (VDD = 5.3 V)

0.591

0.594

0.597

0.600

0.603

0.606

0.609

123456

Detector Threshold VDET (V)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

2.660

2.673

2.687

2.700

2.714

2.727

2.741

135

Detector Threshold VDET (V)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

4.925

4.950

4.975

5.000

5.025

5.050

5.075

123456

Detector Threshold VDET (V)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.021

0.024

0.027

0.030

0.033

0.036

0.039

0.042

0.045

-50 -25 025 50 75 100

Detector Threshold

Hysteresis VHYS (V)

Temperature Topt (°C)

0.095

0.109

0.122

0.136

0.149

0.163

0.176

0.190

0.203

-50 -25 025 50 75 100

Detector Threshold Hysteresis VHYS

(V)

Temperature Topt (°C)

R3118x

No. EA-242-180420

R3118x50xA/C (VDD = 5.3 V)

5) Hysteresis vs. Supply Voltage

R3118x06xA/C

R3118x27xA/C

R3118x50xA/C

0.175

0.200

0.225

0.250

0.275

0.300

0.325

0.350

0.375

-50 -25 025 50 75 100

Detector Threshold Hysteresis

VHYS (V)

Temperature Topt (°C)

0.021

0.024

0.027

0.030

0.033

0.036

0.039

0.042

0.045

123456

Detector Threshold

Hysteresis VHYS (V)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.095

0.108

0.122

0.135

0.149

0.162

0.176

0.189

0.203

123456

Detector Threshold

Hysteresis V HYS (V)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.175

0.2

0.225

0.25

0.275

0.3

0.325

0.35

0.375

123456

Detector Threshold

Hysteresis VHYS (V)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

R3118x

No. EA-242-180420

6) Output Voltage vs. SENSE Voltage (DOUT pin is pulled up to VDD pin via 470 kΩ)

R3118x06xA/C

R3118x27xA/C

R3118x50xA/C

7) Nch.

Driver Outp ut Current vs. Supply Voltage

）

Nch. Driver Output Current v s. Output Voltage

R3118xxxxA/C (VDOUT = 0.4 V)

R3118xxxxA/C

0123456

Output Voltage VDOUT (V)

SENSE Voltage VSENSE (V)

VDD=1V

VDD=3V

VDD=5V

0123456

Output Voltage VDOUT (V)

SENSE Voltage VSENSE (V)

VDD=1V

VDD=3V

VDD=5V

0123456

Output Voltage VDOUT (V)

SENSE Voltage VSENSE (V)

VDD=1V

VDD=3V

VDD=5V

123456

Nch Driver Output Current

IOUT (mA)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0123

Nch Driver Output Current

IDOUT (mA)

Output Voltage VDOUT (V)

VDD=1V

VDD=3V

VDD=5V

R3118x

No. EA-242-180420

Pch. Driver Output Current vs. Supply Voltage

10)

Pch Driver Output current vs. Output voltage

R3118xxxxA/C (VDOUT = VDD - 0.1 V)

R3118xxxxA/C

11) CD pin Discharge Tr. On Resista nce vs. Supply Voltage

R3118xxxxA/C (VCD = 0.4 V)

12) CD pin Discharge Transi stor O n Resistance vs. CD pi n Voltage

R3118xxxxA/C

-100

-80

-60

-40

-20

123456

Pch Driver Output Current

IDOUT (μA)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

-2.0

-1.8

-1.6

-1.4

-1.2

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

012345

Pch Driver Output Current

IDOUT (mA)

Output Voltage VDOUT (V)

VDD=1V

VDD=3V

VDD=5V

123456

CDPin Discharge Tr. On

Resistor RDIS (k ohm)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.0 1.0 2.0

Pin Discharge Tr On

Resistor RDIS (k ohm)

CD Pin Voltage VCD (V)

VDD=1V

VDD=3V

VDD=5V

R3118x

No. EA-242-180420

13) Release Output D elay Time vs. Temperature

14) Release Output D elay Time vs. Supply Voltage

R3118xxxxA/C (VDD = 4 V, CD = 0.022 µF)

R3118xxxxA/C (CD = 0.022 µF)

15)

Detect Out pu t De lay Time/R el ease Output Delay Time vs. CD pin External Capacitance

R3118xxxxA/C (VDD = 4 V)

105

115

125

135

145

-50 -25 025 50 75 100

Release Delay Time

tdelay (ms)

Temperature Topt (°C)

105

115

125

135

145

135

Release Delay Time tdelay

(ms)

Supply Voltage VDD (V)

Topt=-40°C

Topt=25°C

Topt=85°C

0.01

0.1

100

1000

0.0001 0.0010 0.0100 0.1000

Release / Detect

Delay Time tdelay / treset (ms)

External Capacitance CD(μF)

tdelay

treset

R3118x

No. EA-242-180420

16) Detect Output Del ay time vs. Over-drive Voltage

R3118x06xA/C (CD = none)

R3118x50xA/C (CD = none)

SENSE pin Voltage

SENSE

Time t

Detector Threshold

(-V

DET

)

DOUT pin Voltage

DOUT

Time t

Detect Output

DelayTime (t

RESET

)

Over-dri ve Voltage

)

Note: The pulse shorter than the detect output delay time cannot be detected, and "L" does not output from

DOUT pin.

100

10 100 1000

Detect Delay Time treset (μs)

Over Drive Volt age VOD (mV)

VDD=1V

VDD=6V

100

120

140

10 100 1000

Detect Delay Time treset (μs)

Over Drive Volt age VOD (mV)

VDD=1V

VDD=6V

R3118x

No. EA-242-180420

17) Release Output Delay time vs. Over-drive Voltage

R3118x06xA/C (CD = none)

R3118x50xA/C (CD = none)

SENSE pin Voltage

SENSE

Time t

Released Voltage

(+V

DET

)

DOUT pin Vo ltage

DOUT

Time t

Release Output

Delay Time (t

DELAY

)

Over-dri ve Voltage

)

Notes:

• If the pulse is shorter than t he out put release delay time, t he R3118x cannot be released and "H" does not

output from DOUT pin.

• If the attachment capacitor for CD pin for setting a delay time is too small and the difference between the

released voltage thre shold and t he actual release d voltage is too sm all or the slope for ri sing voltage of the

SENSE pin is too slow, the output delay time tolerance will be worse.

Ex. Attachment capacitor = 0.0001 µF, Released voltage threshold = 4.725 V, Actual released voltage =

4.75 V. In this case, the calculate d del ay time = 0.4545 ms, however, over-drive voltage is onl y 25 mV.

Therefore, the actual delay time will be approximately 2.4545 ms. If t he at tachment capacitor = 0.001 µF

and other conditi ons are same as above, the calculated delay time = 4.545 ms, and the actual delay time

will be approximat ely 6.545 ms. If the attachment capacitor = 0.01 µF and other conditions are same as

above, the calculated delay time = 45.45 ms, and the actual delay time will be approximately 47.45 ms.

100

150

200

250

300

350

400

450

500

10 100 1000

Release Delay Time tdelay (μs)

Over Drive Voltage VOD (mV)

VDD=1V

VDD=6V

500

1000

1500

2000

2500

3000

3500

10 100 1000

Release Delay Time tdelay (μs)

Over Drive Voltage VOD (mV)

VDD=1V

VDD=6V

POWER DISSIPATION

DFN

(PLP)

1212

Ver. A

The power dissipation of the package is dependent on PCB material, layout, and environmental conditions.

The following measurement conditions are based on JEDEC STD. 51-7.

Measurement Conditions

Item Measurement Conditions

Environment Mounting on Board (Wind Velocity = 0 m/s)

Board Material Glass Cloth Epoxy Plastic (Four-Layer Board)

Board Dimensions 76.2 mm × 114.3 mm × 0.8 mm

Copper Ratio

Outer Layer (First Layer): Less than 95% of 50 mm Square

Inner Layers (Second and Third Layers): Approx. 100% of 50 mm Square

Outer Layer (Fourth Layer): Approx. 100% of 50 mm Square

Through-holes  0.2 mm × 14 pcs

Measurement Result (Ta = 25°C, Tjmax = 125°C)

Item Measurement Result

Power Dissipation 450 mW

Thermal Resistance (ja) ja = 218°C/W

Thermal Characterization Parameter (ψjt) ψjt = 105°C/W

ja: Junction-to-Ambient Thermal Resistance

ψjt: Junction-to-Top Thermal Characterization Parameter

Power Dissipation vs. Ambient Temperature Measurement Board Pattern

100

200

300

400

500

600

0 25 50 75 100 125

Power Dissipation (mW)

Ambient Temperature (°C)

450

PACKAGE DIMENSIONS DFN(PLP)1212-6

Ver. B

DFN(PLP)1212-6 Package Dimension s

POWER DISSIPATION SC-88A

Ver. B

The power dissipation of the pack age is dependent on P CB m at erial, layout, and env ironmental conditions.

The following conditions are used in this measurement.

Measurement Conditions

Item

Standard Test Land Pattern

Environment Mounti ng on Board (Wind Velocity = 0 m/s)

Board Material Glass Cloth Epoxy Plastic (Double-Sided Board)

Board Dimensions 40 mm × 40 mm × 1.6 mm

Copper Ratio Top Side: Approx. 50%

Bottom Side: Approx. 50%

Through-holes φ 0.5 mm × 44 pcs

Measurement Resu lt (Ta = 25°C, Tjmax = 125°C)

Item Standard Test Land Pattern

Power Dissipat i on 380 mW

Thermal Resistance (θja) θja = 263°C/W

Thermal Characteri zat i on Parameter (ψjt) ψjt = 75°C/W

θja: Junction-to-Ambi ent Thermal Resistance

ψjt: Junction-to-Top Thermal Chara cterization Parameter

Power Dissipation vs. Ambient Temperature

Measurement Board Pattern

100

200

300

400

500

0 25 50 75 100 125

Power Dissipation (mW)

Ambient Temperature (°C)

380

PACKAGE DIMENSIONS SC-88A

Ver. A

SC-88A Package Dimensions

POWER DISSIPATION SOT-23-5

Ver. A

The power dissipation of the package is dependent on PCB material, layout, and environmental conditions.

The following measurement conditions are based on JEDEC STD. 51-7.

Measurement Conditions

Item

Measurement Conditions

Environment

Mounting on Board (Wind Velocity = 0 m/s)

Board Material

Glass Cloth Epoxy Plastic (Four-Layer Board)

Board Dimensions

76.2 mm × 114.3 mm × 0.8 mm

Copper Ratio

Outer Layer (First Layer): Less than 95% of 50 mm Square

Inner Layers (Second and Third Layers): Approx. 100% of 50 mm Square

Outer Layer (Fourth Layer): Approx. 100% of 50 mm Square

Through-holes

 0.3 mm × 7 pcs

Measurement Result (Ta = 25°C, Tjmax = 125°C)

Item

Measurement Result

Power Dissipation

660 mW

Thermal Resistance (ja)

ja = 150°C/W

Thermal Characterization Parameter (ψjt)

ψjt = 51°C/W

ja: Junction-to-Ambient Thermal Resistance

ψjt: Junction-to-Top Thermal Characterization Parameter

Power Dissipation vs. Ambient Temperature

Measurement Board Pattern

PACKAGE DIMENSIONS

SOT-23-5

Ver. A

SOT-23-5 Package Dimensions

2.9±0.2

1.9±0.2

(0.95) (0.95)

5 4

1 2 3

1.6

0.1

+0.2

2.8±0.3

0.4±0.1

0.8±0.1

1.1±0.1

0～0.1

0.15

0.05

+0.1

0.2min.

Ricoh is committed to reducing the environmental loading materials in electrical devices

with a view to contributing to the protection of human health and the environment.

Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since

April 1, 2012.

Halogen Free

https://www.e-devices.ricoh.co.jp/en/

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RicohElectronicDevicesCo.,Ltd.

Taipeioﬃce

Room109,10F-1,No.51,HengyangRd.,TaipeiCity,Taiwan

Phone:+886-2-2313-1621/1622Fax:+886-2-2313-1623

 1.The productsandthe productspeciﬁcationsdescribed inthisdocument aresubjecttochange ordiscontinuationof

productionwithoutnoticefor reasons

suchasimprovement.Therefore, beforedecidingtouse the products,please

refertoRicohsalesrepresentativesforthelatestinformationthereon.

 2.The materialsinthis document maynotbe copied orotherwisereproduced inwholeorin partwithoutpriorwritten

consentofRicoh.

 3.Please be sure to take any necessary formalities under relevant laws or regulations before exporting or otherwise

takingoutofyourcountrytheproductsorthetechnicalinformationdescribedherein.

 4.Thetechnicalinformationdescribedinthisdocumentshowstypicalcharacteristicsofandexampleapplicationcircuits

fortheproducts.Thereleaseofsuchinformationisnottobeconstruedasawarrantyoforagrantoflicenseunder

Ricoh'soranythirdparty'sintellectualpropertyrightsoranyotherrights.

 5.Theproductslistedinthisdocumentareintendedanddesignedforuseasgeneralelectroniccomponentsinstandard

applications (oﬃce equipment, telecommunication equipment, measuring instruments, consumer electronic products,

amusementequipmentetc.). Thosecustomersintending tousea productinanapplication requiringextremequality

andreliability,forexample,inahighlyspeciﬁcapplicationwherethefailureormisoperationoftheproductcouldresult

inhumaninjuryordeath(aircraft,spacevehicle,nuclearreactorcontrolsystem,traﬃccontrolsystem,automotiveand

transportationequipment,combustionequipment,safetydevices,lifesupportsystemetc.)shouldﬁrstcontactus.

 6.Wearemakingourcontinuouseﬀorttoimprovethequalityandreliabilityofourproducts,butsemiconductorproducts

arelikelytofailwithcertainprobability.Inordertopreventanyinjurytopersonsordamagestopropertyresultingfrom

suchfailure,customersshouldbecarefulenoughtoincorporatesafetymeasuresintheirdesign,suchasredundancy

feature,ﬁrecontainmentfeatureandfail-safefeature.Wedonotassumeanyliability

orresponsibilityforanylossor

damagearisingfrommisuseorinappropriateuseoftheproducts.

 7.Anti-radiationdesignisnotimplementedintheproductsdescribedinthisdocument.

 8.The X-ray exposure can inﬂuence functions and characteristics of the products. Conﬁrm the product functions and

characteristicsintheevaluationstage.

 9.WLCSP products should be used in light shielded environments. The light exposure can inﬂuence functions and

characteristicsoftheproductsunderoperationorstorage.

10.There can be variation in the marking when diﬀerent AOI (Automated Optical Inspection) equipment is used. In the

caseofrecognizingthemarkingcharacteristicwithAOI,pleasecontactRicohsalesorourdistributorbeforeattempting

touseAOI.

11.

PleasecontactRicohsalesrepresentativesshouldyouhaveanyquestionsorcommentsconcerningtheproductsor

thetechnicalinformation.