SC194AMLTRT Semtech, SC194AMLTRT Datasheet - Page 6

• Manufacturer Part Number: SC194AMLTRT
• Description: IC SYNC BUCK CONV 1A 10-MLP
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC194AMLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adjustable
• Current - Output: 1A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC194AMLTR

© 2006 Semtech Corp.
POWER MANAGEMENT
Pin Descriptions
Pin #
10
T
1
2
3
4
5
6
7
8
9
SYNC/PWM
THERMAL
Pin Name
MODE
VOUT
PGND
VID0
VID1
GND
PAD
VIN
EN
LX
Pin Function
Input power supply voltage
MODE select pin - MODE = V
Oscillator synchronization input - Tie to V
mode at light loads. Apply an external clock signal for frequency synchronization.
Enable digital input - a high input enables the SC194A, a low disables and reduces quiescent current to
less than 1μA. In shutdown, LX becomes high impedance.
Regulated output voltage and feedback for SC194A
Logic level bit 0 used in conjunction with VID1 to set the output voltage. Connect high or low as required
to select the desired output voltage. If not connected, the output voltage will be indeterminate.
Logic level bit 1 used in conjunction with VID0 to set the output voltage. Connect high or low as required
to select the desired output voltage. If not connected, the output voltage will be indeterminate.
Ground
Power Ground
Inductor connection to the switching FETs
Pad for heatsinking purposes - not connected internally. Connects to ground plane using
multiple vias.
IN
to select 100% duty cycle function, MODE = GND to disable
6
IN
for forced PWM mode or GND to allow the part to enter PSAVE
PRELIMINARY
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SC194A