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SC189 Datasheet(PDF) 9 Page - Semtech Corporation

Part # SC189
Description  2.5MHz, 1.5A Synchronous Step Down Regulator
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC189 Datasheet(HTML) 9 Page - Semtech Corporation

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© 2009 Semtech Corp.
9
SC189
Output Voltage Ripple (V
OUT=1.5V)
Output Voltage Ripple (V
OUT=1.5V)
Transient Response (V
OUT=1.5V; 0A to 0.5A)
Output Voltage Ripple (V
OUT=1.5V)
Output Voltage Ripple (V
OUT=1.5V)
Transient Response (V
OUT=1.5V; 0.5A to 1.0A)
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
VIN=5.0V
IOUT=0A
Output Voltage Ripple (VOUT=1.5V)
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
VIN=3.3V
IOUT=0A
Output Voltage Ripple (VOUT=1.5V)
V
OUT
100mV/div
I
OUT
500mA/div
50µs/div
Transient Response (VOUT=1.5V)
VIN=5.0V
IOUT=0A to 0.5A
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
Output Voltage Ripple (VOUT=1.5V)
VIN=5.0V
IOUT=1.5A
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
Output Voltage Ripple (VOUT=1.5V)
VIN=3.3V
IOUT=1.5A
V
OUT
100mV/div
I
OUT
500mA/div
50µs/div
Transient Response (VOUT=1.5V)
VIN=5.0V
IOUT=0.5A to 1A
Typical Waveforms
Circuit Conditions: V
OUT=1.5V (SC189HULTRT); L= 2.2uH (TOKO: 1071AS-2R2M); CIN= COUT= 10uF/6.3V (Murata: GRM21BR60J106K).


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