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SC189AEVB Datasheet(PDF) 13 Page - Semtech Corporation

Part # SC189AEVB
Description  2.5MHz, 1.5A Synchronous Step Down Regulator
PDF  23 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC189AEVB Datasheet(HTML) 13 Page - Semtech Corporation

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www.semtech.com
© 2009 Semtech Corp.
13
SC189
Output Voltage Ripple (V
OUT=1.0V)
Output Voltage Ripple (V
OUT=1.0V)
Transient Response (V
OUT=1.0V)
Output Voltage Ripple (V
OUT=1.0V)
Output Voltage Ripple (V
OUT=1.0V)
Transient Response (V
OUT=1.0V)
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
Offset: 0A
500ns/div
VIN=3.3V
IOUT=0A
Output Voltage Ripple (VOUT=1.0V)
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
VIN=5.0V
IOUT=0A
Output Voltage Ripple (VOUT=1.0V)
VOUT
20mV/div
IOUT
500mA/div
50µs/div
Transient Response (VOUT=1.0V)
VIN=5.0V
IOUT=0A to 0.5A
VOUT
10mV/div
VLX
2V/div
ILX
1A/div
500ns/div
Output Voltage Ripple (VOUT=1.0V)
VIN=3.3V
IOUT=1.5A
VOUT
10mV/div
VLX
2V/div
ILX
1A/div
500ns/div
Output Voltage Ripple (VOUT=1.0V)
VIN=5.0V
IOUT=1.5A
VOUT
20mV/div
IOUT
500mA/div
50µs/div
Transient Response (VOUT=1.0V)
VIN=5.0V
IOUT=0.5A to 1A
Typical Waveforms (continued)
Circuit Conditions: V
OUT=1.0V (SC189AULTRT); L= 1uH (Murata: LQM2HPN1R0NG0L); CIN= 10uF/6.3V; COUT= 22uF/6.3V (Murata: GRM21BR60J226M).



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