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SC1109 Datasheet(PDF) 4 Page - Semtech Corporation

Part # SC1109
Description  SYNCHRONOUS PWM CONTROLLER WITH DUAL LOW DROPOUT REGULATOR CONTROLLERS
PDF  17 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1109 Datasheet(HTML) 4 Page - Semtech Corporation

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SYNCHRONOUS PWM CONTROLLER WITH
DUAL LOW DROPOUT REGULATOR
CONTROLLERS
© 2000 SEMTECH CORP.
PRELIMINARY - October 16, 2000
SC1109
4
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
Pin
Pin Name
Pin Function
1
LDOS1
Sense Input for LDO1
2
GATE1
Gate Drive Output LDO1 (1.8V)
3
STBY
5V Standby Input, supplies power for
Ref, Charge Pump, Oscillator and FET
controllers.
4
BCAP+
Positive Connection to Boost Capacitor
5
BCAP-
Negative Connection to Boost Capacitor
6
GND
Ground
7
PHASE
Phase Node
8
DL
Low Side Driver Output
9
DH
High Side Driver Output
10
BST
Boost Input
11
VCC
Power Supply Input
12
PWRGD
Open Collector Power Good Flag for
1.2V Output
13
VOSENSE
Output Sense Input for 1.2V Output
14
SS/EN
Soft Start/ Enable
15
GATE2
Gate Drive Output LDO2 (2.5V)
16
LDOS2
Sense Input for LDO2
Top View
(16 Pin SOIC)
GATE1
LDOS1
STBY
BCAP+
BCAP-
GND
PHASE
DH
LDOS2
GATE2
SS/EN
PWRGD
VOSENSE
VCC
BST
DL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PIN DESCRIPTION
PIN CONFIGURATION



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