SC1102 Semtech Corporation, SC1102 Datasheet - Page 4

• Manufacturer Part Number: SC1102
• Description: SYNCHRONOUS DC/DC CONTROLLER FOR DISTRIBUTED POWER SUPPLY APPLICATIONS
• Manufacturer: Semtech Corporation

PIN DESCRIPTION
September 5, 2000
Pin #
NOTE:
(1) All logic level inputs and outputs are open collector TTL compatible.
CHARACTERISTIC CURVES
© 2000 SEMTECH CORP.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
-1%
-2%
2%
1%
0%
0
Pin Name
PWRGD
OVP
OCSET
PHASE
DH
PGND
DL
BSTL
BSTH
SENSE
VREF
SS/SHDN
GND
1
VCC
2
SC1102 Voltage Regulation, Vin=5V
3
4
Current, A
5
6
7
8
9
10 11 12
Pin Function
Chip supply voltage
Logic high indicates correct output voltage
Over voltage protection.
Sets the converter overcurrent trip point
Input from the phase node between the MOSFET’S
High side driver output
Power ground
Low side driver output
Bootstrap, low side driver.
Bootstrap, high side driver.
Voltage sense input
Buffered band gap voltage reference.
Soft start. A capacitor to ground sets the slow start time.
Signal ground
SYNCHRONOUS DC/DC CONTROLLER FOR
DISTRIBUTED POWER SUPPLY APPLICATIONS
3.3V
2.5V
2.0V
1.3V
652 MITCHELL ROAD NEWBURY PARK CA 91320
100%
90%
80%
70%
60%
0
1
2
3
SC1102 Effiency, Vin=5V
4
5
Current, A
6
7
8
9
10
11
SC1102
12
3.3V
2.5V
2.0V
1.3V
4