Technical Note

4/10

www.rohm.com

2011.06 - Rev.B

© 2011 ROHM Co., Ltd. All rights reserved.

BD1604MUV, BD1604MVV

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Block Diagram, Recommended Circuit Example and Pin Location Diagram

1

ISET

LED1

LED2

LED3

LED4

VBAT

VOUT

2

3

4

5

6

7

8

C1P

12

11

10

9

16

15

14

13

BD1604MUV

BD1604MVV

Fig.12 Pin Location Diagram

(Top View)

Fig.13 Block Diagram and Recommended Circuit Diagram

×1, ×1.5, ×2

Charge pump

Over Voltage

Protect

OSC

TSD

Control

Vout Control

Charge Pump

Mode Control

ISET

Resistor Driver

Current Driver

GND

ISET

LED1

LED2

LED3

LED4

EN

SEL0

SEL1

SEL2

Battery

VBAT

VOUT

C1

C2

Cin

Rset

Cout