Db1230 Pin Configuration - Harman Kardon AVR 151/230C Service Manual

Harman Kardon
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
EP
PIN CONFIGURATION
SYMBOL
Enable pin.
EN
For automatic start-up, please leave it open and in case of on/off control, there
should be pull-down resistor.(10K~100Kohm)
Feedback pin.
FB
External resistors are connected between OUT and GND to set the regulated
output voltage based on 0.8V reference.
Internal regulated output.
VCC
A decoupling capacitor should be close to this pin as possible
External soft-start program pin.
SS
An external capacitor should be connected to GND.
GND Ground.
Switching Node.
SW
An inductor, internal high-side and low-side power switches are connected
Bootstrap pin.
BS
The bootstrap charge capacitor should be connected between BS and SW to
provide a supply to gate driver of high-side power switch.
IN Input power supply pin.
Exposed pad. Connect the exposed pad to GND for heat sink.
Exposed Pad
This pin combines thermal sink and power ground.
Fig.3 DB1230 PIN configuration
DESCRIPTION
TOP VIEW
8-SOP-EP Package
2 of 19
AVR 151 Service Manual
DB1230
Preliminary Datasheet DB1230P-02
19. Oct. 2011
Page 59 of 131