BD9211F Просмотр технического описания (PDF) - ROHM Semiconductor

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производитель

BD9211F

LED Driver control IC

ROHM Semiconductor 

〇 External Dimensions

, Marking

〇 Block Diagram

BD9211F

3/4

Dvice Mark

SOP18 (Unit:mm)

Lot No.

○Pin Number, Pin Name, Pin Function

Pin

Pin

No

name

Functions

Pin

Pin

No

name

Functions

1 VCC

2 STB

3 GND

4 RT

5 FB

Power supply pin for IC （built-in UVLO function）

Power ON/OFF control pin for IC

Signal/ground pin for internal IC

Drive frequency set up terminal.

Lamp current, lamp voltage, error amp outputs

10 PWMIN

11 SDON

PWM signal input pin for burst bright adjustment

control

Enable pin of COMPSD inputs over voltage

detection

12 SS

Soft-start set up pin

13 FAIL

Error Indication signal Output Normal : L, Error :

OPEN

14 COMPSD Detection pin for over voltage shut down

6 IS

Error amp input pin for lamp current feedback

15 COMP

7 VS

Error amp input pin for lamp voltage feedback at

the opening time.

16

PGND

8

PWMCMP

PWM comparator input pin which controls PWM

operation during brightness adjustment.

17

N2

9 CP

Timer latch-setting pin

18 N1

Detection pin for over voltage and shut-down delay

Power Ground for external MOSFET drive

Output pin for external FET drive circuit (Ch. N2)

Output pin for external FET drive circuit (Ch. N1)

REV. A

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