SC2450ISWTR(2001) View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC2450ISWTR Datasheet PDF : 20 Pages
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SC2450
POWER MANAGEMENT
Pin Descriptions
Pin
Pin Name Pin Function
1
FB1
Feedback for channel 1.
2
COMP1 Compensation for channel 1.
3
NC
No connection.
4
BG
1V reference for error amplifiers, 3K source impedance.
5
FB2
Feedback for channel 2.
6
COMP2 Compensation for channel 2.
7
REGDRV Regulator drive for external pass transistor.
8
ENABLE Enable threshold is 2.05 V, connect to ground to disable.
9
PHASE2 Phase node input for channel 2.
10
DRVH2 Gate drive for high side channel 2.
11
BSTH2 Bootstrap input for high side channel 2.
12
DRVL2
Gate drive for low side channel 2.
13
BSTL2
Supply for low side channel 2.
14
VCC
Pre-regulated IC power supply.
15
BSTL1
Supply for low side channel 1.
16
DRVL1 Gate drive for low side channel 1.
17
BSTH1 Bootstrap input for high side channel 1.
18
DRVH1 Gate drive for high side channel 1.
19
PHASE1 Phase node input for high side channel 1.
20
PGND
Power ground.
21
OC+
Overcurrent comparator inverting input.
22
OC-2
Overcurrent comparator non-inverting input for channel 2.
23
OC-1
Overcurrent comparator non-inverting input for channel 1.
24
EXTCLK External clock, converter locks to this input when a valid signal is present.
25
CLKOUT Clock out, logic level drive to provide synchronizing signal for other converters.
26
NC
No connection.
27
AGND
Analog ground.
28
RREF
External reference resistor for internal oscillator and ramp generator.
2001 Semtech Corp.
5
www.semtech.com
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