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SC189AEVB 데이터시트(PDF) 10 Page - Semtech Corporation

부품명 SC189AEVB
상세설명  2.5MHz, 1.5A Synchronous Step Down Regulator
PDF  23 Pages
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제조업체  SEMTECH [Semtech Corporation]
홈페이지  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC189AEVB 데이터시트(HTML) 10 Page - Semtech Corporation

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© 2009 Semtech Corp.
10
SC189
Start Up (Enable)(V
OUT=1.5V)
Start Up (Power up V
IN) (VOUT=1.5V)
Start Up into Pre-Bias Output (Enable)
Start Up (Enable)(V
OUT=1.5V)
Start Up (Power up V
IN) (VOUT=1.5V)
Shutdown (Disable) (V
OUT=1.5V)
V
OUT
1V/div
100µs/div
Start Up (V
OUT=1.5V)
V
IN=5.0V
R
OUT=1k
V
EN
2V/div
V
IN
2V/div
V
OUT
500mV/div
200µs/div
Start Up (V
OUT=1.5V), EN=VIN
V
IN
2V/div
V
IN=5.0V
R
OUT=1k
V
OUT
500mV/div
200µs/div
V
IN
2V/div
V
IN=5.0V
R
OUT=1k
Start Up into Pre-Biased Output (V
OUT=1.5V) Enable
V
EN
2V/div
V
OUT
1V/div
100µs/div
Start Up (V
OUT=1.5V)
V
EN
2V/div
V
IN
2V/div
V
IN=5.0V
R
OUT=1
V
OUT
500mV/div
200µs/div
Start Up (V
OUT=1.5V), EN=VIN
V
IN
2V/div
V
IN=5.0V
R
OUT=1
50µs/div
Shutdown-Disable
V
OUT
500mV/div
V
EN
2V/div
V
IN
2V/div
V
IN=5.0V
R
OUT=1.5
Typical Waveforms (continued)
Circuit Conditions: V
OUT=1.5V (SC189HULTRT); L= 2.2uH (TOKO: 1071AS-2R2); CIN= COUT= 10uF/6.3V (Murata: GRM21BR60J106K).



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