SC1153 Datasheet, PDF (3/7 Pages) Semtech Corporation – PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS

PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
SC1153
PRELIMINARY - October 3, 2000
PIN DESCRIPTION
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name
GND
VCC
OVP
PWRGOOD⁽¹⁾
CS(-)
CS(+)
PGNDH
DH
NC
PGNDL
DL
BSTL
BSTH
SHUTDOWN⁽¹⁾
VOSENSE
VID4⁽¹⁾
VID3⁽¹⁾
VID2⁽¹⁾
VID1⁽¹⁾
VID0⁽¹⁾
Pin Function
Small Signal Analog and Digital Ground
Chip Supply Voltage
High Signal Out if V_O > Setpoint + 20%
Open collector logic output, high if V_O within 10% of setpoint
Current Sense Input (negative)
Current Sense Input (positive)
Power Ground for High Side Switch
High Side Driver Output
Not Connected
Power Ground for Low Side Switch
Low Side Driver Output
Vcc for Low Side Driver (Boost)
Vcc for High Side Driver (Boost)
Logic Low shuts down the converter
Top end of internal feedback chain
Programming Input (MSB)
Programming Input
Programming Input
Programming Input
Programming Input (LSB)
NOTE:
(1) All logic level inputs and outputs are open collector TTL compatible.
PIN CONFIGURATION
© 2000 SEMTECH CORP.
3
652 MITCHELL ROAD NEWBURY PARK CA 91320