BD9898F 데이터 시트보기 (PDF) - ROHM Semiconductor

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BD9898F

DC-AC Inverter Control IC

ROHM Semiconductor 

〇Package Dimensions

BD9898F

１

SOP28 (Unit:mm)

〇Block Diagram

3/4

Device Mark

BD9898FV

１

Lot No.

SSOP-B28 (Unit:mm)

〇Pin Description

PIN No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

PIN NAME

FUNCTION

PGND

Ground for FET drivers

LN2

NMOS FET driver

HN2

NMOS FET driver

SW2

Lower rail voltage for HN2 output

BST2

Boot-Strap input for HN2 output

CT_SYNC_IN CT synchronous signal input pin

CT_SYNC_OUT

SRT

RT

GND

BCT

BRT

DUTY

CT synchronous signal output pin

External resistor from SRT to RT for

adjusting the start-up triangle oscillator

External resistor from RT to GND for

adjusting the triangle oscillator

GROUND

External capacitor from BCT to GND for

adjusting the BURST triangle oscillator

External resistor from BRT to GND for

adjusting the BURST triangle oscillator

Control PWM mode and BURST mode

STB

CP

VREF

VS

Stand-by switch

External capacitor from CP to GND for

Timer Latch

Reference voltage input pin for Error

amplifier

Error amplifier input

IS

Error amplifier input

FB

SS

COMP

Error amplifier output

External capacitor from SS to GND for

Soft Start Control

Over voltage detect pin

VCC

Supply voltage input

UVLO

External Under Voltage Lock Out

REG

Internal regulator output

BST1

Boot-Strap input for HN1 output

SW1

Lower rail voltage for HN1 output

HN1

NMOS FET driver

LN1

NMOS FET driver

REV. B

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