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SM8135A

White LED Driver IC

Nippon Precision Circuits  

SM8135A

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

ISTB Standby mode

–

0.01

1.00

µA

Quiescent current

IDD1 ×1.0 mode, IOUT = 0mA

VIN

IDD2*1 ×1.5 mode, IOUT = 0mA

–

0.3

1.0

mA

–

1.5

4.5

mA

IDD3 ×2.0 mode, IOUT = 0mA

–

1.5

4.5

mA

Output voltage

VOUT

VOUT

4.4

4.9

5.4

V

Maximum output current

VOUT

IOUT ×1.5/×2.0 mode

80

–

–

mA

Operating frequency

C1M

fOSC ×1.5/×2.0 mode switching frequency 750

1000

1250

kHz

Internal power-ON reset time*1

EN

TPOR Rest time from when power is applied

–

0.05

1.00

ms

Soft start time

DIN1 to 4 TSS EN startup → ILED rising edge

0.70

1.43

3.00

ms

LED drive pin leakage current DIN1 to 4 ILeak1 to 4 Standby mode, DIN pin = 4.9V

–

0.01

1.00

µA

LED drive current

DIN1 to 4 ILED1 to 4 ×1.0 mode

18.0

20.0

22.0

mA

×1.0 mode,

LED drive current matching

DIN1 to 4 ∆ILED relative accuracy between channels –5.0

–

+5.0

%

at ILED maximum setting

LED drive pin voltage

DIN1 to 4 VDIN1 to 4 ×1.0 mode

–

200

–

mV

LED drive current

setting resistance*1

ISET

RSET RSET minimum value

60

–

–

kΩ

EN hold time*1

PWM input pulse frequency*1

PWM input pulse duty*1

Logic input voltage

Logic input current

EN

TCEH

Time from when EN = LOW until

shutdown

EN

fPWM PWM dimming signal frequency

EN

DPWM PWM dimming signal duty range

VIH HIGH-level input voltage range

EN

VIL LOW-level input voltage range

IIH Pull-down pin, EN pin = 3.6V

EN

IIL

EN pin = 0V

0.50

1.00

1.50

ms

10

–

100

kHz

10

–

100

%

1.4

–

–

V

–

–

0.3

V

–

5.0

10.0

µA

–1.0

–

–

µA

*1. Design guaranteed value

SEIKO NPC CORPORATION —4

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