SC198 Semtech, SC198 Datasheet - Page 5

• Manufacturer Part Number: SC198
• Description: Dual DC-DC Buck Converter
• Manufacturer: Semtech

Note:
(1) All CTL pins must be pulled high or low for proper operation.
POWER MANAGEMENT
Pin Descriptions
© 2007 Semtech Corp.
Pin #
10
11
12
13
14
15
16
17
18
19
20
T
1
2
3
4
5
6
7
8
9
THERMAL PAD
Pin Name
VOUTB
VOUTA
CTLA0
CTLA1
CTLA2
CTLB2
CTLB1
CTLB0
GNDR
GNDB
GNDA
SYNC
VINB
VINR
VINA
ENB
ENA
LXA
LXB
NC
Input power supply voltage converter A
Connection point for the inductor on converter A
Ground reference to converter A
Feedback control input for converter A
Voltage select control pin 0 for output A (see Table A — Output Voltage Options).
Voltage select control pin 1 for output A (see Table A — Output Voltage Options).
Voltage select control pin 2 for output A (see Table A — Output Voltage Options).
Ground for reference supply
Voltage select control pin 2 for output B (see Table A — Output Voltage Options).
Voltage select control pin 1 for output B (see Table A — Output Voltage Options).
Voltage select control pin 0 for output B (see Table A — Output Voltage Options).
Feedback control input for converter B
Ground reference for converter B
Connection point for the inductor on converter B
Input power supply voltage for converter B
Enable pin for output B
Oscillator synchronization input - connect to VIN for forced PWM mode, ground for
power-save mode or connect to an external clock for frequency synchronization.
Reference supply input
Not connected
Enable pin for output A
Thermal pad for heatsinking purposes — connect to ground plane using multiple
vias — not connected internally
Pin Function
5
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