BD81A44MUV-M datasheet(11/39 Pages) ROHM

Part #	BD81A44MUV-M

Description	4ch White LED Driver with Buck-Boost

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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Datasheet

11/35

TSZ02201-0T3T0C600060-1-2

2016.10.19 Rev.003

www.rohm.com

TSZ22111・15・001

BD81A44MUV-M/EFV-M

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

Parameter

Symbol

Limit

Unit

Conditions

Min

Normal

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]

Reference Voltage

VREG

4.5

5.0

5.5

V

IREG=-5mA, CREG=2.2μF

[OUTH]

OUTH High Side ON-Resistor

RONHH

1.5

3.5

7.0

Ω

IOUTH=-10mA

OUTH Low Side ON-Resistor

RONHL

0.8

2.5

5.5

Ω

IOUTH=10mA

OCP Detection Voltage

VOLIMIT

VCC-0.22

VCC-0.2

VCC-0.18

V

[OUTL]

OUTL High Side ON-Resistor

RONLH

1.5

3.5

10.0

Ω

IOUTL=-10mA

OUTL Low Side ON-Resistor

RONLL

0.8

2.5

5.5

Ω

IOUTL=10mA

[SW]

SW Low Side

ON-Resistor

RON_SW

4.0

10.0

25.0

Ω

ISW=10mA

[Error AMP]

LED Control Voltage

VLED

0.9

1.0

1.1

V

COMP Sink Current

ICOMPSINK

35

80

145

μA

VLED=2V, VCOMP=1V

COMP Source Current

ICOMPSOURCE

-145

-80

-35

μA

VLED=0.5V, VCOMP=1V

[Oscillator]

Oscillation Frequency 1

fosc1

285

300

315

kHz

RT=27kΩ

Oscillation Frequency 2

fosc2

1800

2000

2200

kHz

RT=3.9kΩ

[OVP]

OVP Detection Voltage

VOVP1

1.9

2.0

2.1

V

VOVP=Sweep up

OVP Hysteresis Width

VOVPHYS1

0.02

0.06

0.10

V

VOVP=Sweep down

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BD81A44MUV-M Datasheet(PDF) 11 Page - Rohm

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