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SC189CEVB-2 数据表(PDF) 12 Page - Semtech Corporation

部件名 SC189CEVB-2
功能描述  2.5MHz, 1.5A Synchronous Step Down Regulator
PDF  23 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC189CEVB-2 数据表(HTML) 12 Page - Semtech Corporation

Back Button SC189CEVB-2 Datasheet HTML 8Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 9Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 10Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 11Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 12Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 13Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 14Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 15Page - Semtech Corporation SC189CEVB-2 Datasheet HTML 16Page - Semtech Corporation Next Button
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© 2009 Semtech Corp.
12
SC189
Start Up (Power up V
IN) (VOUT=3.3V)
Start Up into Pre-Bias Output (Enable)
Shutdown (Disable) (V
OUT=3.3V)
Start Up (Power up V
IN) (VOUT=3.3V)
Start Up into Pre-Bias Output (Power Up V
IN)
Shutdown (Disable) (V
OUT=3.3V)
V
OUT
1V/div
200µs/div
Start Up (V
OUT=3.3V), EN=VIN
V
IN
2V/div
V
IN=5.0V
R
OUT=1k
V
OUT
1V/div
200µs/div
Start Up into Pre-Biased Output (V
OUT=3.3V)(Enable)
V
IN=5.0V
R
OUT=1k
V
EN
2V/div
V
IN
2V/div
500µs/div
Shutdown-Disable (V
OUT=3.3V)
V
OUT
2V/div
V
EN
2V/div
V
IN
5V/div
V
IN=5.0V
R
OUT=33
V
OUT
1V/div
200µs/div
Start Up (V
OUT=3.3V), EN=VIN
V
IN
2V/div
V
IN=5.0V
R
OUT=2.2
V
OUT
1V/div
200µs/div
Start Up into Pre-Biased Output (V
OUT=3.3V)(Power Up)
V
IN=5.0V
R
OUT=1k
V
IN
2V/div
100µs/div
Shutdown-Disable (V
OUT=3.3V)
V
OUT
2V/div
V
EN
2V/div
V
IN
5V/div
V
IN=5.0V
R
OUT=3.3
Typical Waveforms (continued)
Circuit Conditions: V
OUT=3.3V (SC189ZULTRT); L= 2.2uH (TOKO: 1071AS-2R2); CIN= COUT= 10uF/6.3V (Murata: GRM21BR60J106K).



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