SC198MLTRT Semtech, SC198MLTRT Datasheet - Page 5

• Manufacturer Part Number: SC198MLTRT
• Description: IC DUAL DC-DC BUCK CONV 20-MLPQ
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC198MLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: Programmable
• Current - Output: 600mA
• Frequency - Switching: 1MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-MLPQ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC198MLTR

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
NOT RECOMMENDED FOR NEW DESIGN
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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