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SC189AEVB 데이터시트(PDF) 11 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) 11 Page - Semtech Corporation

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© 2009 Semtech Corp.
11
SC189
Output Voltage Ripple (V
OUT=3.3V)
Transient Response (V
OUT=3.3V; 0A to 0.5A)
Start Up (Enable)(V
OUT=3.3V)
Output Voltage Ripple (V
OUT=3.3V)
Transient Response (V
OUT=3.3V; 0.5A to 1.0A)
Start Up (Enable)(V
OUT=3.3V)
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
Output Voltage Ripple (VOUT=3.3V)
VIN=5.0V
IOUT=0A
V
OUT
100mV/div
I
OUT
500mA/div
50µs/div
Transient Response (VOUT=3.3V)
VIN=5.0V
IOUT=0A to 0.5A
V
OUT
1V/div
200µs/div
Start Up (V
OUT=3.3V)
V
IN=5.0V
R
OUT=1k
V
EN
2V/div
V
IN
5V/div
VOUT
10mV/div
VLX
2V/div
ILX
500mA/div
500ns/div
Output Voltage Ripple (VOUT=3.3V)
VIN=5.0V
IOUT=1.5A
V
OUT
100mV/div
I
OUT
500mA/div
50µs/div
Transient Response (VOUT=3.3V)
VIN=5.0V
IOUT=0.5A to 1A
V
OUT
1V/div
200µs/div
Start Up (V
OUT=3.3V)
V
EN
2V/div
V
IN
5V/div
V
IN=5.0V
R
OUT=2.2
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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