NCV7681LPWR2G - ON SEMICONDUCTOR

November, 2016 − Rev. 1 1Publication Order Number:

NCV7681/D

NCV7681

100 mA Linear Current

Regulator and Controller for

Automotive LED Lighting

The NCV7681 consists of eight linear programmable constant

current sources. The part is designed for use in the regulation and

control of LED based Rear Combination Lamps and blinking

functions for automotive applications. System design with the

NCV7681 allows for two programmed levels for stop (100% Duty

Cycle) and tail illumination (programmable Duty Cycle), or an

optional external PWM control can be implemented.

LED brightness levels are easily programmed (stop is programmed

to the absolute current value, tail is programmed to the duty cycle)

with two external resistors. The use of an optional external ballast FET

allows for power distribution on designs requiring high currents. Set

back power limit reduces the drive current during overvoltage

conditions. This is most useful for low power applications when no

external FET is used.

The device is available i n a S OIC−16 WB p ackage w ith e xposed p ad.

Features

•Constant Current Outputs for LED String Drive

•LED Drive Current up to 100 mA per Channel

•Open LED String Diagnostic with Open−Drain Output in All Modes

•Slew Rate Control Eliminates EMI Concerns

•Low Dropout Operation for Pre−Regulator Applications

•External Modulation Capable

•On−chip 800 Hz Tail PWM Dimming

•Single Resistor for Stop Current Set Point

•Single Resistor for Tail Dimming Set Point

•Overvoltage Set Back Power Limitation

•AEC−Q100 Qualified and PPAP Capable

•16 Lead SOICW Exposed Pad

•Improved EMC Performance

•Latch−Off Function on Open String (NCV7681L)

♦Restart Option of Unaffected Strings

•Over Temperature Fault Reporting

•These are Pb−Free Devices

Applications

•Rear Combination Lamps (RCL)

•Daytime Running Lights (DRL)

•Fog Lights

•Center High Mounted Stop Lamps (CHMSL) Arrays

•Turn Signal and Other Externally Modulated Applications

•Signature Lamp

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MARKING

DIAGRAM

NCV7681 = Specific Device Code

x = A (No Latch−Off Function)

or L (Latch−Off Function)

A = Assembly Location

WL = Wafer Lot

YY = Year

WW = Work Week

G = Pb−Free Device

SOIC−16 WB

PW SUFFIX

CASE 751DW

Device Package Shipping†

ORDERING INFORMATION

NCV7681APWR2G SOIC−16WB

(Pb−Free) 1000 /

Tape & Reel

NCV7681x

AWLYYWWG

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer t o our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

NCV7681LPWR2G SOIC−16WB

(Pb−Free) 1000 /

Tape & Reel

NCV7681

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Figure 1. Block Diagram

Out1

Out8

Out7

Out6

Out5

Out4

Out3

Out2

−

Ballast

Drive

STOP

DIAG

RSTOP RTAIL

FET Drive

1 of 8

Soft Start,

Bias and

200K

Detect

Overvoltage

200K

Control Logic

V−I Converter

Limit

−

Irstop

Vreg

2.2V

0.4V Rtail

IRSTOP x 150

EMC Filter

−

1.8V Restart

DIAG

Inverface

UVLO

Latch−Off Control

Detection

GND

Vreg

Open Load

DIAG

Interface

Current

Circuit

Open

and PWM

Oscillator

Open Load

50% IOUT

Latch−Off

Output

−20%

Current

Setback

Control

Channel

Drive

Current

Output

Over voltage sense

Over temperature &

Reference

Boxes with dotted lines signify NCV7681L only.

Figure 2. Pinout Diagram

OUT1 OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

GND

RTAIL

RSTOP

DIAG

STOP

Ballast Drive

NCV7681

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Figure 3. Application Diagram with External FET Ballast Transistor

OUT1

GND

RTAIL

RSTOP

DIAG

STOP

Ballast

R4, 3.01K

R5, 1.62K

MRA4003T3G

NVD2955

NCV7681

VSTRING

STOP

TAIL

10K

10nF

9.53K

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

100nF

1K C2

0.22uF

0.68uF Drive

R6 and R7 values shown yield 10.5 V regulation on VSTRING.

C1 is for line noise and stability considerations.

C3 is for EMC considerations.

Unused OUTx channels should be shorted to ground as OUT7 shows in this example.

Figure 4. Application Diagram without the FET Ballast Transistor

OUT1

OUT8

GND

RTAIL

RSTOP

DIAG

STOP

Ballast

R4, 3.01K

R5, 1.62K

MRA4003T3G

NCV7681

VSTRING

STOP

TAIL

10K

10nF

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

0.68uF

100nF

Drive

When using the NCV7681 without the FET ballast transistor, tie the FB pin and Ballast Drive pin to GND.

NCV7681

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Table 1. APPLICATION I/O TRUTH TABLE

STOP

INPUT TAIL

MODE OUTx LATCH OFF

(w/ LO = GND) OUTX

CURRENT FAULT

STATE* DIAG

STATE**

0 0 NCV7681A OFF − 1

1 X NCV7681A ISTOP NORMAL 0

1 X NCV7681A ISTOP OPEN CIRCUIT*** 1

1 X NCV7681L OFF OPEN CIRCUIT*** 1

0 1 NCV7681A PWM NORMAL 0

0 1 NCV7681A PWM OPEN CIRCUIT*** PWM

Reference Figures below.

X = don’t care

0 = LOW

1 = HIGH

* Open Circuit, RSTOP Current Limit, Set Back Current Limit down 20%, and thermal shutdown

**Pull−up resistor to DIAG required.

*** OPEN CIRCUIT = Any string open.

Figure 5. DIAG timing diagram WITH

Open String Latch Active

All outputs latch off.

Figure 6. DIAG timing diagram WITHOUT

Open String Latch Active

No outputs are turned off.

DIAG will report the state.

DIAG

Open String Removed

off

Outputs with no open string.

DIAG

Open String Removed

off

off Outputs with no open string.

OUTx

Current

OUTx

Current

Open String Occurs

OUTx

Current

OUTx

Current

Open String Occurs

NCV7681L NCV7681A

NCV7681

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Table 2. PIN FUNCTION DESCRIPTION (16 Pin SO Wide Exposed Pad Package)

Pin # Label Description

1 OUT1 Channel 1 constant current output to LED.

Unused pin should be grounded.

2 VP Supply Voltage Input.

3Ballast Drive Gate drive for external power distribution PFET.

Ground if not used.

4 FB Feedback Sense node for VP regulation.

Use feedback resistor divider or connect to VP with a 10k resistor.

5 STOP Stop Logic Input. External Modulation Input.

6 DIAG Open−drain diagnostic output.

Reporting Open Circuit, RSTOP Current Limit,

and Overvoltage Set Back Current down 20%.

Normal Operation = LOW.

Ground if not used.

7 RSTOP Stop current bias program resistor.

8 RTAIL Tail current duty cycle PWM program resistor.

Ground if using external modulation.

9 OUT8 Channel 8 constant current output to LED.

Unused pin should be grounded.

10 OUT7 Channel 7 constant current output to LED.

Unused pin should be grounded.

11 OUT6 Channel 6 constant current output to LED.

Unused pin should be grounded.

12 OUT5 Channel 5 constant current output to LED.

Unused pin should be grounded.

13 GND Ground.

14 OUT4 Channel 4 constant current output to LED.

Unused pin should be grounded.

15 OUT3 Channel 3 constant current output to LED.

Unused pin should be grounded.

16 OUT2 Channel 2 constant current output to LED.

Unused pin should be grounded.

epad* epad Ground. Do not connect to pcb traces other than GND.

*Grounding will provide better thermal and electrical performance.

NCV7681

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Table 3. MAXIMUM RATINGS (Voltages are with respect to device substrate.)

Rating Value Unit

Supply Input (VP, Ballast Drive, STOP, DIAG)

Peak Transient −0.3 to 40

Output Pin Voltage (OUTX) −0.3 to 40 V

Output Pin Current (OUTX) 200 mA

DIAG Pin Current 10 mA

Input Voltage (RTAIL, RSTOP, FB) −0.3 to 3.6 V

Junction Temperature, TJ−40 to 150 °C

Peak Reflow Soldering Temperature: Lead−free

60 to 150 seconds at 217°C (Note 1) 260 peak °C

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality

should not be assumed, damage may occur and reliability may be af fected.

Table 4. ATTRIBUTES

Characteristic Value

ESD Capability

Human Body Model

Machine Model ≥ ± 4.0 kV

≥ ± 200 V

Moisture Sensitivity (Note 1) MSL3

Storage Temperature −55 to 150°C

Package Thermal Resistance (Note 2)

SOIC−16 WB EP

Junction−to−Board (RYJB)

Junction−to−Ambient (RqJA)

Junction−to−Pin (RYJL)

15°C/W

73°C/W

43°C/W

1. For additional information, see or download ON Semiconductor’s Soldering and Mounting Techniques Reference Manual, SOLDERRM/D,

and Application Note AND8003/D.

2. Values represent typical still air steady−state thermal performance on 1 oz. copper FR4 PCB with 650 mm2 copper area with OUT1−OUT8

dissipating 50 mW each.

NCV7681

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Table 5. ELECTRICAL CHARACTERISTICS

(4.5 V < VP < 16 V, STOP = VP, RSTOP = 3.01 kW, RTAIL = 1.62 kW, −40°C ≤ TJ ≤ 150°C, unless otherwise specified.)

Characteristic Conditions Min Typ Max Unit

GENERAL PARAMETERS

Quiescent Current (IOUTx = 50 mA)

STOP mode

Tail mode

Fault mode (Note 5)

VP = 16 V

VP = 16 V, STOP = 0 V, OUTx = 0 mA,

Disconnected output

−

2.0

Driver Ground Pin Current (pin12) IOUT1 to IOUT8 = 50 mA − 400 500 mA

Output Under Voltage Lockout VP Rising 3.8 4.1 4.4 V

Output Under Voltage Lockout

Hysteresis − 200 − mV

Open Load Disable Threshold 7.2 7.7 8.2 V

Open Load Disable Hysteresis − 200 − mV

THERMAL LIMIT

Thermal Shutdown (Note 3) 150 175 − °C

Thermal Hysteresis (Note 3) − 15 − °C

CURRENT SOURCE OUTPUTS

Output Current OUTX = 0.5 V, TJ = 25°C, 150°C

OUTX = 1 V, RSTOP = 1.5 K 45

90 50

100 55

110 mA

Maximum Regulated Output Current 0.5V to 16V 100 − − mA

Current Matching ƪ2IOUTx(min)

IOUTx(min) )IOUTx(max) *1ƫ 100

ƪ2IOUTx(max)

IOUTx(min) )IOUTx(max) *1ƫ 100

−4 0 4 %

Line Regulation 9 V ≤ VP ≤ 16 V – 1.2 6.0 mA

Open Circuit Detection Threshold 25 mA

50 mA 25

35 50

50 75

65 % of Output

Current

Current Slew Rate Iout = 44 mA, 10% to 90% points − 6 15 mA/ms

Overvoltage Set Back Threshold @ 99% Iout 16.0 17.2 18.4 V

Overvoltage Set Back Current VP = 20 V (Note 4) − 78 − %Iout

Diag Reporting of Set Back Current − 80 − %Iout

Output Off Leakage EN = high − − 1 mA

FET DRIVER

Ballast Drive

DC Bias

Sink Current FB = 1.5 V, Ballast Drive = 3 V

FB = 0.5 V, Ballast Drive = 3 V −

41.0

13 2.4

Ballast Drive Reference Voltage 0.92 1.00 1.08 V

STOP LOGIC

Input High Threshold 0.75 1.25 1.75 V

Input Low Threshold 0.70 1.00 1.44 V

VIN Hysteresis 100 250 400 mV

Input Impedance Vin = 14 V 120 200 300 kW

3. Designed t o m eet these characteristics over the stated voltage and temperature recommended operating ranges, though may not be 100%

parametrically tested in production.

4. The output current degrades at a rate of 8%/V.

5. This test parameter applies only to the NCV7681LPWR2G.

NCV7681

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Table 5. ELECTRICAL CHARACTERISTICS

(4.5 V < VP < 16 V, STOP = VP, RSTOP = 3.01 kW, RTAIL = 1.62 kW, −40°C ≤ TJ ≤ 150°C, unless otherwise specified.)

Characteristic UnitMaxTypMinConditions

CURRENT PROGRAMMING

RSTOP Bias Voltage Stop current programming voltage 0.94 1.00 1.06 V

RSTOP K multiplier

IOUTX/IRSTOP − 150 − −

RSTOP Over Current Detection RSTOP = 0 V 0.70 1.00 1.45 mA

RTAIL Bias Current Tail duty cycle programming current 290 330 370 mA

Duty Cycle RTAIL = 0.49 V

RTAIL = 0.76 V

RTAIL = 1.66 V

3.5

59.5

6.5

80.5

DIAG OUTPUT

Output Low Voltage DIAG Active, IDIAG = 1 mA – 0.1 0.40 V

DIAG Output Leakage VDIAG = 5 V − − 10 mA

Open Load Reset Voltage on DIAG (Note 5) 1.6 1.8 2.0 V

AC CHARACTERISTICS

Stop Turn−on Delay T ime V(STOP) > 1.75 V to I(OUTx) = 90% − 14 45 msec

Stop Turn−off Delay Time V(STOP) < 0.75 V to I(OUTx) = 10% − 14 45 msec

PWM Frequency STOP = 0 V 400 800 1200 Hz

Open Circuit to DIAG Reporting 4.8 mA pull−up to VP, V(DIAG) >1.5 V 1 2 4 ms

VP T urn−on Time 0.55 0.80 1.2 msec

3. Designed t o m eet these characteristics over the stated voltage and temperature recommended operating ranges, though may not be 100%

parametrically tested in production.

4. The output current degrades at a rate of 8%/V.

5. This test parameter applies only to the NCV7681LPWR2G.

NCV7681

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TYPICAL CHARACTERISTICS

Figure 7. Iout vs. RSTOP Figure 8. Iout vs. Temperature

RSTOP (kW)TEMPERATURE (°C)

97653210

100

1401208060200−20−40

Figure 9. Duty Cycle vs. RTAIL Figure 10. Duty Cycle vs. V(RTAIL)

RTAIL (kW)V(RTAIL)

65743210

100

2.52.01.51.00.50

100

Figure 11. Duty Cycle vs. Temperature

TEMPERATURE (°C)

1401008060400−20−40

Iout OUTPUT CURRENT (mA)

Iout, OUTPUT CURRENT (mA)

DUTY CYCLE (%)

4810

T = 25°C

40 100 160

RSTOP = 3.01 kW

20 120 160

RTAIL = 2.3 kW

RTAIL = 5 kW

RTAIL = 1.5 kW

RSTOP = 3.01 kW

NCV7681

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TYPICAL CHARACTERISTICS

Figure 12. IOUT vs. VP Figure 13. IOUT Line Regulation

VP (V) VOUT (V)

252321171513119

1514121110876

49.0

49.2

49.6

49.8

50.2

50.4

50.8

51.0

IOUT, OUTPUT CURRENT (mA)

19 27

RSTOP = 3.01 k

91316

49.4

50.0

50.6

Figure 14. IOUT vs. VOUT

VOUT (V)

14121086420

IOUT, OUTPUT CURRENT (mA)

Figure 15. IOUT vs. VOUT

VOUT (V)

0.40.30.20.10

IOUT, OUTPUT CURRENT (mA)

0.5

Figure 16. VSTRING vs. R6

R6 (W)

12K10K 14K8K6K4K2K0

VSTRING (V)

per eq. 1

R7 = 1 kW

NCV7681

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TYPICAL PERFORMANCE CHARACTERISTICS

qJA (°C/W)

COPPER HEAT SPREADER AREA (mm2)

Figure 17. qJA vs. Copper Spreader Area

100

0.000001 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1000

R(t) (°C/W)

PULSE TIME (s)

Figure 18. Thermal Duty Cycle Curves on 500 mm2 Spreader Test Board

D = 0.5

0.2

0.1

SINGLE PULSE

0.05

0.02 0.01

Figure 19. Single Pulse Heating Curve

PULSE TIME (s)

R(t) (°C/W)

100

1000

0.000001 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1000

50 mm2

100 mm2

500 mm2

100

120

140

160

0 100 200 300 400 500 600 700

1 oz

2 oz

NCV7681

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DETAILED OPERATING DESCRIPTION

General

The NCV7681 device is an eight channel LED driver

whose output currents up to 100 mA/channel are

programmed by an external resistor. The target application

for the device is in automotive Rear Combination Lighting

(RCL) systems.

The STOP logic input switches the two modes of the IC.

While i n the STOP mode (high), the duty cycle of the outputs

is at 100%. When ST OP is low, the duty cycle of the outputs

is programmed via an external resistor on the RTAIL pin.

A logic output (DIAG) communicates open circuit of the

LED driver outputs back to the microprocessor. DIAG

requires a pull−up resistor for proper operation.

An optional external control for a ballast transistor helps

distribute the system power.

Latch Off (NCV7681L)

The Latch Off feature applies only to the NCV7681L.

Automotive requirements sometime dictate all outputs

turn off if one of the outputs is an open circuit. This

eliminates driving with partial illuminated lights. The

module will either display all LED strings or no LED strings

at all. This function is designed into the NCV7681L.

Each output has its own sensing circuitry. An open string

detection on any output latches off all 8 outputs. There are

three means to reinitiate the IC drivers.

1. Forcing the DIAG pin below the Open Circuit

Reset Voltage (1.8 V typical).

2. Toggling the ENABLE input

3. A complete power down of the device below the

Under Voltage Lockout threshold including

hysteresis (3.9 V typical).

Open Load Detection

Open load detection has an under voltage lockout feature

to remove the possibility of turning off the device while it is

powering up. The Open Load Disable Threshold is 7.7 V

(typ). Open load detection becomes active above this

threshold. Current is monitored internal to the NCV7681

device and an open load is flagged when the current is 1/2

of the targeted output current.

Figure 20.

MRA4003T3G

VSTRING

STOP

AIL

NVD2955

0.22uF

NVD2955

0.68uF

OUT1-OUT8

1 -8

VP VP

Ballast Drive

FBFB

9.53K

OUT1-OUT8

OUT1

OUT8

OUT1

OUT8

---------

NCV7681 NCV7681 GND

GND

D5 D8

D6 D9

D10

D11

D12

D13

D14

U1 U2

Q1 Q2

0.22uF

100nF

NCV7681

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DIAG

The logic DIAG pin’s main function is to alert the

controlling microprocessor an open string has occurred on

one of the outputs (DIAG high = open string). Reference

Table 1 for details on logic performance.

Open circuit conditions are reported when the outputs are

actively driven. When operating in STOP mode the DIAG

signal is a DC signal. When operating in TAIL the DIAG

signal is a PWM signal reporting open circuit when the

output drive is active.

Ballast Drive

The use of an external FET device (NVD2955) helps

distribute the system power. A DC voltage regulation system

is used which regulates the voltage at the top (anode) of the

LED strings (Vstring). This has the effect of limiting the

power in the NCV7681 by setting the voltage on the IOUTx

pins specific to each customer application. The Ballast Drive

pin provides the drive in the feedback loop from the FB pin.

In steady state, the voltage is regulated at the feedback

voltage (FB). A simple voltage divider helps set the voltage

at Vstring. Unlike other systems, the ballast drive current

does not turn off in a leakage state when turned off (FB high),

but instead provides 1 mA of current providing a faster

response o f the system loop. This sets the gate voltage of the

NVD2955 to 1 V at 25°C.

Parallel Outputs

The maximum rating per output is 100 mA. In order to

increase system level LED string current, parallel

combinations of any number of outputs is allowed.

Combining all 8 outputs will allow for a maximum system

level string current design of 800 mA.

Unused Outputs

Unused outputs should be shorted to ground. The

NCV7681 detects the condition during power−up using the

open load disable threshold and disables the open circuit

detection circuitry.

Programmability

Strings of LEDs are a common configuration for RCL

applications. The NCV7681 provides eight matched outputs

allowing individual string drive with current set by a single

resistor. Output currents are mirrored and matched within

±4% at hot temperature.

A high STOP condition sets the output current using

equation 1 below.

A low STOP condition, modulates the output currents at

a duty cycle (DC) programmed using equation 2 below.

Note, current limiting on RST OP limits the current which

can be referenced from the RSTOP Pin. Exceeding the

RST OP Current Limit will set the output current to less than

100 mA, and the DIAG Pin will go high. This helps limit

output current (brightness and power) for this type of fault.

The average ISTOP Duty Cycle current provides the

dimmed tail illumination function and assures a fixed

brightness level for tail. The PWM generator’s fixed

frequency (800 Hz typ.) oscillator allows flicker−free

illumination. PWM control is the preferred method for

dimming LEDs.

The diagnostic function allows the detection of an open in

any one of the output circuits. The active−low diagnostic

output ( DIAG) i s c oincident w ith t he S T OP i nput a nd t he O N

state in the tail mode. DIAG remains high (pulled up) if an

open load is detected in any LED string when ST OP is high.

Output Current Programming

Reference Figure 7 (typ performance graph) to choose

programming resistor (RSTOP) value for stop current.

Reference Figure 9 Typical Performance Graph (Duty Cycle

vs. RTAIL) to choose a typical value programming resistor

for output duty cycle (with a typical RSTOP value of

3.01 kW). Note the duty cycle is dependent on both RSTOP

and RTAIL values. RSTOP should always be chosen first as

the stop current is only dependent on this value.

Alternatively, the equations below can be used to calculate

a typical value and used for worst case analysis.

Set the Stop Current using RSTOP

IOUTX +150 @RSTOP_Bias_Voltage

RSTOP (eq. 1)

RSTOP Bias Voltage = 1 V (typ)

Set the Duty Cycle (DC) using RTAIL

RTAIL +1.8 @RSTOP(DC )0.22) (eq. 2)

DC = duty cycle expressed in fractional form. (e.g. 0.50

is equivalent to 50% duty cycle) (ground RTAIL when using

external modulation)

Output Current is directly tested per the electrical

parameter table to be ±10% (with RSTOP = 3.01 KW) or

45 mA (min), 50 mA (typ), 55 mA (max) at room and hot

temperature.

Duty Cycle will vary according to the changes in RTAIL

Voltage and R T AIL Bias Current (generated from the current

through RSTOP).

Voltage errors encompass generator errors (0.4 V to

2.2 V) and comparator errors and are included in testing as

the Duty Cycle. Typical duty cycle measurements are 5%

with RTAIL = 0.49 V and 70% with RTAIL = 1.66 V.

RTAIL Bias Current errors are measured as RTAIL Bias

Current and vary as 290 mA (min), 330 mA (typ), and 370 mA

(max) with RSTOP = 3.01 kW.

The e rror d uality o riginating f rom b oth t he i nternal c urrent

source generated on the RSTOP pin and the comparator

voltage thresholds of the RTAIL pin combined with the

choice of duty cycle levels make it difficult to specify duty

cycle minimum and maximum limits, but worst case

conditions can be calculated when considering the variation

in the voltage threshold and current source. Duty Cycle

variation must include the direct duty cycle as specified in

the electrical parameter table plus an additional error due to

the Irstop current which generates this voltage in the system.

NCV7681

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RSTOP Over Current Protection

Over Current protection has been included for the RST OP

pin. Without protection, the device performance could cause

excessive high current and potential damage to the external

LEDs. Detection of the RSTOP over current event (RSTOP

to ground) is 1 mA (typ) and is current limited to 2.2 mA

(typ). Output drive currents will limit to typically 65 mA.

Note – A feature of the NCV7681 device includes

operation of the device during a short circuit on the RSTOP

pin. Iout is decreased during the STOP condition and the

TAIL duty cycle is reduced to less than 40% by reducing the

voltage on the RTAIL pin to 2/3 of normal operation.

Set Back Current

Automotive battery systems have wide variations in line

supply voltage. Low dropout is a key attribute for providing

consistent LED light output at low line voltage. Unlike

adjustable regulator based constant current source schemes

where the set point resistor resides in the load path, the

NCV7681’s set point resistor lies outside the LED load path,

and aids in the low dropout capability.

Setback Current Limit is employed during high voltage.

During a Setback Current Limit event, the drive current is

reduced resulting in lower power dissipation on the IC. This

occurs during high battery voltage (VP > 16 V). In this way

the NCV7681 can operate in extreme conditions and still

provide a controlled level of light output The Setback

Current (−20%) condition is reported on the DIAG Pin.

Activation of the set back current feature provides a

roll−off rate of −8%/V.

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PACKAGE DIMENSIONS

SOIC−16 WB, EP

CASE 751DW

ISSUE A

DIM MIN MAX

MILLIMETERS

A2.65

A1 0.00 0.10

L0.50 0.90

e1.27 BSC

c0.25 0.32

H10.05 10.55

b0.35 0.49

M0 7

NOTES:

1. DIMENSIONING AND TOLERANCING PER ASME

Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. DIMENSION b DOES NOT INCLUDE DAMBAR

PROTRUSION. DAMBAR PROTRUSION SHALL

BE 0.13 TOTAL IN EXCESS OF b DIMENSION AT

MAXIMUM MATERIAL CONDITION.

4. DIMENSIONS D AND E DO NOT INCLUDE MOLD

PROTRUSIONS.

5. MAXIMUM MOLD PROTRUSION OR FLASH TO

BE 0.15 PER SIDE.

2.35

D10.4510.15

D1 1.79 2.00

E1 2.27 2.47

E7.607.40

h0.53 REF

SOLDERING FOOTPRINT

16X 1.62

16X

0.58

1.27

DIMENSIONS: MILLIMETERS

PITCH

11.00

RECOMMENDED

2.87

2.50

PIN 1

INDICATOR

SEATING

PLANE

16X b

0.25 BT

TOP VIEW

SIDE VIEW

BOTTOM VIEW

0.25 B M

S S

hDET AIL A

END VIEW

x 45

16X

DETAIL A

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