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Datasheet

Datasheet

BD9866GUL

TSZ02201-0B2B0A400010-1-2

17.APR.2013 Rev.001

© 2013 ROHM Co., Ltd. All rights reserved.

www.rohm.com

TSZ22111・15・001

PVCC4

VCC

Lx1

PGND1

PVCC1

Lx2

PVCC2

PVCC3

Lx31

PGND3

Lx32

Vo3

Lx4

VREGB

PGND2

PVCC

A

B

D

C

C

B

A

D

+

-

+

ERRORAMP1

PWMCOMP1

INV1

+

-

+

ERRORAMP2

INV2

+

-

+

ERRORAMP3

INV3

ERRORAMP4

INV4

+

-

SCP TIMER

PROTECTION

TSD

UVLO

OSC

CH CTL

VREG

A

PGND

CTL1

CTL2 CTL3 CTL4

RT

VREGA

GND

SYNC

CH2

Step Down

(Current mode)

CH1

Step Down

(Current mode)

CH3

Cross Converter

(Voltage mode)

--

--

+

RTSS

VREG

D

VREG

B

VREGD

SCP

CH4

Step Down

(Current mode)

PWMCOMP2

PWMCOMP3

PG

SCP

TIMEROUT

Substrate

VCC

VREGA

VREGD

OCP

OCP

OCP

PWMCOMP4

OCP

VREGA

VREGA

VREGA

VREGA

RTSS

enable

SS

Counter reset

CLK

shutdown

SCP

TIMEROUT

Limit input current for PVCC

Limit input current for PVCC

Limit input current for PVCC

Limit input current for PVCC

+

PGND4

Light Load

mode

Light Load

mode

CH1G

VREGA

VREGA

CH2G

SEL

SEL

SEL

150kΩ

180kΩ

100kΩ

120kΩ

200kΩ

39kΩ

24pF

75kΩ

24kΩ

0.01μF

0.01μF

82kΩ

1.0μF

1.0μF

1.0μF

100kΩ

10μF

4.7μH

4.7μF

10μF

4.7μF

4.7μH

10μF

4.7μH

4.7μF

10μF

4.7μH

4.7μF

Vo1

1.1V

Vo2

1.5V

Vo3

5.0V

Vo4

3.3V

(47pF)

(8.2kΩ)

()

()

(*1)

Figure. 5 Application circuit 2

(*1) Add to improve transient characteristics optionally.

We are confident that above applied circuit diagram should be recommended, but please thoroughly confirm its

characteristics when using it. In addition, when using it with external circuit’s constants changed, please make a

decision that allows a sufficient margin in light of the fluctuations of external components and ROHM’s IC in terms of

not only static characteristics but also transient characteristics..