BD81A34MUV-M datasheet(4/36 Pages) ROHM

Part #	BD81A34MUV-M

Description	4ch White LED Driver with Buck-Boost (32 LED Maximum)

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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Datasheet

BD81A34MUV-M BD81A34EFV-M

TSZ02201-0G3G0C600020-1-2

16.Jan.2014 Rev.002

www.rohm.com

TSZ22111

・15・001

Electrical Characteristics

(VCC=12V, Ta = Tj = -40°C to +125°C *Unless otherwise specified)

Parameters

Signal

Standard Value

Unit

Condition

MIN

TYP

MAX

Circuit current

ICC

-

10

mA

EN=High, SYNC=High, RT=OPEN

PWM=Low,ISET=OPEN,CIN=10μF

standby current

IST

-

10

μA

EN=Low, VDISC=OPEN

[VREG Section]

Voltage reference

VREG

4.5

5

5.5

V

IREG=-5mA, CREG=2.2μF

[OUTH Section]

OUTH top side ON resistor

RONHH

1.9

3.5

6.2

Ω

ION=-10mA, Ta=25

℃

1.5

3.5

7.0

Ω

ION=-10mA, Ta=-40°C to +125°C

OUTH bottom side ON resistor

RONHL

1.0

2.5

5.0

Ω

ION=10mA, Ta=25

℃

0.8

2.5

5.5

Ω

ION=-10mA, Ta=-40°C to +125°C

OCP detection voltage

VOLIMIT

VCC-0.66

VCC-0.6

VCC-0.54

V

[OUTL Section]

OUTL top side ON resistor

RONLH

1.9

3.5

6.5

Ω

ION=10mA, Ta=25

℃

1.5

3.5

10.0

Ω

ION=-10mA, Ta=-40°C to +125°C

OUTL bottom side ON resistor

RONLL

1.0

2.5

5.0

Ω

ION=10mA, Ta=25

℃

0.8

2.5

5.5

Ω

ION=-10mA, Ta=-40°C to +125°C

[SW Section]

SW ON resistor

RON_SW

5.0

10.0

15.0

Ω

ION=10mA, Ta=25

℃

4.0

10.0

25.0

Ω

ION=-10mA, Ta=-40°C to +125°C

[Error Amp Section]

LED control voltage

VLED

0.9

1.0

1.1

V

COMP

sink current

ICOMPSINK

20

80

160

μA

VLED=2V, VCOMP=1V

COMP source current

ICOMPSOURCE

-160

-80

-20

μA

VLED=0V, VCOMP=1V

[Oscillation Section]

Oscillation frequency 1

fosc1

285

300

315

kHz

RT=27kΩ

Oscillation frequency 2

fosc2

1800

2000

2200

kHz

RT=3.9kΩ

[OVP Section]

OVP detection voltage

VOVP

1.9

2.0

2.1

V

VOVP=Sweep up

OVP hysteresis width

VOVPHYS

0.45

0.55

0.65

V

VOVP=Sweep down

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BD81A34MUV-M Datasheet(PDF) 4 Page - Rohm

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