NCP4587DMU12TCG - ON Semiconductor L.L.C.

November, 2010 − Rev. P0

1Publication Order Number:

NCP4587/D

NCP4587

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150 mA, Tri-Mode, LDO

Linear Voltage Regulator

The NCP4587 is a CMOS 150 mA LDO which switches to a low

power mode under light current loads. The device automatically

switches back to a fast response mode as the output load increases

above 3 mA (typ.) or it can be placed in permanent fast mode through

a mode select pin. The family is available in a variety of packages:

SC−70, SOT23 and an ultra thin (0.4 mm) small 1.2 x 1.2 mm XDFN.

Features

•Operating Input Voltage Range: 1.4 V to 5.25 V

•Output Voltage Range: 0.8 to 4.0 V (Available in 0.1 V steps)

•Supply current: Low Power Mode – 1.0 mA

Fast Mode – 55 mA

Standby Mode – 0.1 mA

•Very Low Dropout: 120 mV Typ. at 150 mA (Vout > 2.6 V)

•±1% Output Voltage Accuracy (VOUT > 2 V, TJ = 25°C)

•High PSRR: 70 dB at 1 kHz (Fast response mode)

•Line Regulation 0.02%/V Typ.

•Current Fold Back Protection

•Stable with Ceramic Capacitors

•Available in 1.2 x 1.2 XDFN, SC−70 and SOT23 Package

•These are Pb−Free Devices

Typical Applications

•Battery Powered Equipments

•Portable Communication Equipments

•Cameras, Image Sensors and Camcorders

VIN VOUT

GND

C1 C2

VIN VOUT

NCP4587x

Figure 1. Typical Application Schematic

This document contains information on a product under development. ON Semiconductor

reserves the right to change or discontinue this product without notice.

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See detailed ordering and shipping information in the package

dimensions section on page 5 of this data sheet.

ORDERING INFORMATION

SC−70

CASE 419A

XX, XXX= Specific Device Code

M, MM = Date Code

A = Assembly Location

Y = Year

W = Work Week

G= Pb−Free Package

MARKING

DIAGRAMS

(Note: Microdot may be in either location)

XDFN6

CASE 711AA

SOT−23−5

CASE 1212

XXX MG

NCP4587

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Current Limit

VIN

GND

Vref

VOUT

NCP4587Hxxxx

Current Limit

VIN

GND

Vref

VOUT

NCP4587Dxxxx

Figure 2. Simplified Schematic Block Diagram

PIN FUNCTION DESCRIPTION

Pin No.

XDFN

Pin No.

SC−70

Pin No.

SOT23 Pin Name Description

4 4 1 VIN Input pin

2 2 2 GND Ground

3 5 3 CE Chip enable pin (active “H”)

6 3 5 VOUT Output pin

1 1 4 AE Auto Eco Pin

5− − NC No connection

ABSOLUTE MAXIMUM RATINGS

Rating Symbol Value Unit

Input Voltage (Note 1) VIN 6.0 V

Output Voltage VOUT −0.3 to VIN + 0.3 V

Chip Enable Input VCE −0.3 to 6.0 V

Auto Eco Input VAE −0.3 to 6.0 V

Output Current IOUT 400 mA

Power Dissipation XDFN PD400 mW

Power Dissipation SC−70 380

Power Dissipation SOT23 420

Maximum Junction Temperature TJ(MAX) 150 °C

Storage Temperature TSTG −55 to 125 °C

ESD Capability, Human Body Model (Note 2) ESDHBM 2000 V

ESD Capability, Machine Model (Note 2) ESDMM 200 V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.

2. This device series incorporates ESD protection and is tested by the following methods:

ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)

ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)

Latchup Current Maximum Rating tested per JEDEC standard: JESD78.

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THERMAL CHARACTERISTICS

Rating Symbol Value Unit

Thermal Characteristics, XDFN

Thermal Resistance, Junction−to−Air

RqJA 250

°C/W

Thermal Characteristics, SOT23

Thermal Resistance, Junction−to−Air

RqJA 238

°C/W

Thermal Characteristics, SC−70

Thermal Resistance, Junction−to−Air

RqJA 263

°C/W

ELECTRICAL CHARACTERISTICS

−40°C ≤ TA ≤ 85°C; VIN = VOUT(NOM) + 1 V or 2.5 V, whichever is greater; IOUT = 1 mA, CIN = COUT = 0.47 mF, unless otherwise noted.

Typical values are at TA = +25°C.

Parameter Test Conditions Symbol Min Typ Max Unit

Operating Input Voltage (Note 3) VIN 1.4 5.25 V

Output Voltage TA = +25 °C,

IOUT = 5 mA

VOUT > 2 V VOUT x0.99 x1.01 V

VOUT ≤ 2 V −20 20 mV

−40°C ≤ TA ≤ 85°C,

IOUT = 5 mA

VOUT > 2 V x0.975 x1.015 V

VOUT ≤ 2 V −50 30 mV

Output Voltage Temp.

Coefficient

TA = −40 to 85°C±50 ppm/°C

Line Regulation VIN = VOUT + 0.5 V to

5 V, VIN ≥ 1.4 V

IOUT = 1 mA,

(Low Power Mode)

LineReg 0.50 %/V

IOUT = 10 mA,

(Fast Mode)

0.02 0.20

Load Regulation IOUT = 1 mA to 10 mA VOUT > 2.0 V LineReg −1.0 1.0 %

VOUT ≤ 2.0 V −20 20 mV

IOUT = 10 mA to 150 mA 18 40 mV

Dropout Voltage IOUT = 150 mA 0.8 V ≤ VOUT < 0.9 V VDO (Note 4) V

0.9 V ≤ VOUT < 1.0 V (Note 4)

1.0 V ≤ VOUT < 1.5 V 0.24 0.4

1.5 V ≤ VOUT < 2.6 V 0.19 0.25

2.6 V ≤ VOUT < 4.0 V 0.12 0.18

Output Current IOUT 150 mA

Short Current Limit VOUT = 0 V ISC 50 mA

Quiescent Current IOUT = 0 mA,

Low Power Mode

(Note 5)

VOUT ≤ 1.85 V IQ1.0 4.0 mA

VOUT > 1.85 V 1.5 4.0

Supply Current IOUT = 10 mA, Fast Mode IGND 55 mA

Standby Current VCE = 0 V, TJ = 25°C ISTB 0.1 1 mA

Fast Mode Switch−Over Current IOUT = light to heavy load IOUTH 8.0 mA

Low Power Switch−Over

Current

IOUT = heavy to light load IOUTL 1.0 2.0 mA

CE Pin Threshold Voltage CE Input Voltage “H” VCEH 1.0 V

CE Input Voltage “L” VCEL 0.4

CE Pull Down Current ICEPD 0.1 mA

3. The maximum Input Voltage of the ELECTRICAL CHARACTERISTICS is 5.25 V. In case of exceeding this specification, the IC must be

operated on condition that the Input Voltage is up to 5.5V and the total operating time is within 500 hrs.

4. VIN > 1.4 V condition is dominant against this specification

5. The value of quiescent current is excluding the pull−down current of CE and AE pin

NCP4587

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ELECTRICAL CHARACTERISTICS

−40°C ≤ TA ≤ 85°C; VIN = VOUT(NOM) + 1 V or 2.5 V, whichever is greater; IOUT = 1 mA, CIN = COUT = 0.47 mF, unless otherwise noted.

Typical values are at TA = +25°C.

Parameter UnitMaxTypMinSymbolTest Conditions

AE Pin Threshold Voltage AE Input Voltage “H” VAEH 1.0 V

AE Input Voltage “L” VAEL 0.4

AE Pull Down Current IAEPD 0.1 mA

Power Supply Rejection Ratio VIN = VOUT + 1 V or 2.2 V whichever is higher,

DVIN = 0.2 Vpk−pk, IOUT = 30 mA, f = 1 kHz, Fast

Mode

PSRR 70 dB

Output Noise Voltage VOUT = 1.2 V, IOUT = 30 mA, f = 10 Hz to

100 kHz

VN115 mVrms

Low Output Nch Tr. On

Resistance

VIN = 4 V, VCE = 0 V RLOW 50 W

3. The maximum Input Voltage of the ELECTRICAL CHARACTERISTICS is 5.25 V. In case of exceeding this specification, the IC must be

operated on condition that the Input Voltage is up to 5.5V and the total operating time is within 500 hrs.

4. VIN > 1.4 V condition is dominant against this specification

5. The value of quiescent current is excluding the pull−down current of CE and AE pin

NCP4587

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APPLICATION INFORMATION

A typical application circuit for NCP4587 series is shown

in Figure 3.

VIN VOUT

GND

C1 C2

VIN VOUT

NCP4587x

Figure 3. Typical Application Schematic

Input Decoupling Capacitor (C1)

A 1 mF ceramic input decoupling capacitor should be

connected as close as possible to the input and ground pin of

the NCP4587. Higher values and lower ESR improves line

transient response.

Output Decoupling Capacitor (C2)

A 1 mF ceramic output decoupling capacitor is sufficient

to achieve stable operation of the IC. If tantalum capacitor

is used, and its ESR is high, the loop oscillation may result.

If output capacitor is composed from few ceramic capacitors

in parallel, the operation can be unstable. The capacitor

should be connected as close as possible to the output and

ground pin. Larger values and lower ESR improves dynamic

parameters.

Enable Operation

Enable pin CE may be used for turning the regulator on

and off. The regulator is switched on when CE pin voltage

is above logic high level. Enable pin has internal pull down

current source. If enable function is not needed connect CE

pin to VIN.

Output Discharger

The D version includes a transistor between VOUT and

GND that is used for faster discharging of the output

capacitor. This function is activated when the IC goes into

disable mode.

Auto ECO and Fast Mode

The NCP4587 has two operation modes that have impact

on supply current and transient response at low output

current. These two modes can be selected by AE pin. If AE

pin is at low level Auto ECO mode is available. Please, see

supply current vs. output current charts.

Thermal

As power across the IC increases, it might become

necessary to provide some thermal relief. The maximum

power dissipation supported by the device is dependent

upon board design and layout. Mounting pad configuration

on the PCB, the board material, and also the ambient

temperature affect the rate of temperature rise for the part.

That is to say, when the device has good thermal

conductivity through the PCB, the junction temperature will

be relatively low with high power dissipation applications.

PCB layout

Make VIN and GND line sufficient. If their impedance is

high, noise pickup or unstable operation may result. Connect

capacitors C1 and C2 as close as possible to the IC, and make

wiring as short as possible.

ORDERING INFORMATION

Device

Nominal Output

Voltage Description Marking Package Shipping†

NCP4587DMU12TCG 1.2 V Auto discharge YE XDFN

(Pb−Free)

5000 / Tape & Reel

NCP4587DMU18TCG 1.8 V Auto discharge YL XDFN

(Pb−Free)

5000 / Tape & Reel

NCP4587DMU28TCG 2.8 V Auto discharge YW XDFN

(Pb−Free)

5000 / Tape & Reel

NCP4587DMU30TCG 3.0 V Auto discharge YY XDFN

(Pb−Free)

5000 / Tape & Reel

NCP4587DMU33TCG 3.3 V Auto discharge ZB XDFN

(Pb−Free)

5000 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

NOTE: To order other package and voltage variants, please contact your ON Semiconductor sales representative.

NCP4587

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PACKAGE DIMENSIONS

NOTES:

1. DIMENSIONING AND TOLERANCING

PER ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. 419A−01 OBSOLETE. NEW STANDARD

419A−02.

4. DIMENSIONS A AND B DO NOT INCLUDE

MOLD FLASH, PROTRUSIONS, OR GATE

BURRS.

DIM

MIN MAX MIN MAX

MILLIMETERS

1.80 2.200.071 0.087

INCHES

B1.15 1.350.045 0.053

C0.80 1.100.031 0.043

D0.10 0.300.004 0.012

G0.65 BSC0.026 BSC

H--- 0.10---0.004

J0.10 0.250.004 0.010

K0.10 0.300.004 0.012

N0.20 REF0.008 REF

S2.00 2.200.079 0.087

B0.2 (0.008) MM

12 3

D 5 PL

−B−

SC−88A (SC−70−5/SOT−353)

CASE 419A−02

ISSUE K

NCP4587

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PACKAGE DIMENSIONS

ÍÍÍ

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ASME Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. DIMENSION b APPLIES TO PLATED

TERMINAL AND IS MEASURED BETWEEN

0.15 AND 0.25mm FROM TERMINAL TIPS.

4. COPLANARITY APPLIES TO ALL OF THE

TERMINALS.

SEATING

PLANE

0.05 C

2X 0.05 C

XDFN6 1.2x1.2, 0.4P

CASE 711AA−01

ISSUE O

DIM

MIN MAX

MILLIMETERS

--- 0.40

A1 0.00 0.05

b0.13 0.23

PIN ONE

REFERENCE

0.05 C

NOTE 3

MOUNTING FOOTPRINT*

1.20 BSC

0.40 BSC

0.37 0.48

BOTTOM VIEW

DIMENSIONS: MILLIMETERS

0.66

6X 0.22

1.50

0.40

PITCH

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

C0.20 0.30

TOP VIEW

SIDE VIEW

NOTE 4

RECOMMENDED

0.05 BC

PACKAGE

OUTLINE

NCP4587

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PACKAGE DIMENSIONS

DIM MIN MAX

MILLIMETERS

A1 0.00 0.10

A2 1.00 1.30

B0.30 0.50

C0.10 0.25

D2.80 3.00

E2.50 3.10

E1 1.50 1.80

e0.95 BSC

e1 1.90 BSC

L1 0.45 0.75

NOTES:

1. DIMENSIONS ARE IN MILLIMETERS.

2. INTERPRET DIMENSIONS AND TOLERANCES

PER ASME Y14.5M, 1994.

3. DATUM C IS A SEATING PLANE.

0.10 C S

B5X

0.05

0.20 ---

SOT−23

CASE 1212−01

ISSUE O

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to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability

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“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All

operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights

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PUBLICATION ORDERING INFORMATION

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada

Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

Japan Customer Focus Center

Phone: 81−3−5773−3850

NCP4587/D

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