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SM8136A

White LED Driver IC

Nippon Precision Circuits  

SM8136A

Electrical Characteristics

VIN = 3.6V, GND = 0V, Ta = 25°C unless otherwise noted.

Parameter

Pin

Symbol

Condition

Rating

Unit

min

typ

max

Standby current

VIN

I STB

Standby mode

–

0.01

1.00

µA

Quiescent current 1

Quiescent current 2

IDD1

×1.0 mode, IOUT = 0mA

VIN

I DD2

×1.5 mode, IOUT = 0mA

–

0.3

1.0

mA

–

1.0

2.0

mA

Output voltage

×1.5 mode, VIN = 3.6V, IOUT = 0mA

4.5

5.0

5.5

V

VOUT

VOUT

×1.5 mode, VIN = 3.0V, IOUT = 60mA

–

3.5

–

V

Maximum output current

VOUT

I OUT

×1.5 mode

60

–

–

mA

Operating frequency

C1M

Internal power-ON reset time*1

EN

fOSC ×1.5 mode switching frequency

800

TPOR Rest time from when power is applied

–

1000

1200

kHz

0.05

1.00

ms

Power-ON rise time

EN, VIN

T PR

EN = VIN, time from 0.3V to 2.7V

–

–

50

µs

Soft start time

DIN1 to 3

T SS

EN startup → ILED rising edge

–

2.00

3.00

ms

LED drive pin leakage current DIN1 to 3 ILeak1 to 3 Standby mode, DIN pin = 5.0V

–

0.01

1.00

µA

LED drive current

DIN1 to 3 ILED1 to 3 ×1.0 mode (3-channel average value) 18.0

20.0

22.0

mA

LED drive current accuracy

DIN1 to 3

∆ILED

×1.0 mode, relative accuracy between

channels at ILED maximum settings

–5.0

–

+5.0

%

LED drive pin voltage

DIN1 to 3 VDIN1 to 3 ×1.0 mode, ILED = 20mA

–

120

–

mV

×1.0 ↔ ×1.5 mode switching

threshold voltage

VIN VTH1.0 to 1.5 VF (LED) = 3.3V, ILED = 20mA

–

3.46

–

V

EN hold time*1*2

EN

TCEH

Time from when EN = LOW until

shutdown

0.50

1.00

1.50

ms

EN HIGH-level input time*1

EN

TENH

EN input pulse HIGH-level minimum

pulsewidth

4.0

–

–

µs

EN LOW-level input time*1*2

EN

TENL

EN input pulse LOW-level pulsewidth

range

4.0

–

500

µs

Logic input voltage

VIH

HIGH-level input voltage range

EN

VIL

LOW-level input voltage range

Logic input current

IIH

Pull-down pin, EN pin = 3.6V

EN

IIL

EN pin = 0V

*1. Design guaranteed value

*2.

1.4

–

–

V

–

–

0.3

V

–

5.0

10.0

µA

–1.0

–

–

µA

When shutdown

EN

> 1.5msec

When dimming

EN

4µsec to 500µsec

SEIKO NPC CORPORATION —4

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