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SC189CEVB 数据表(PDF) 5 Page - Semtech Corporation

部件名 SC189CEVB
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 数据表(HTML) 5 Page - Semtech Corporation

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© 2009 Semtech Corp.
5
SC189
Typical Characteristics
Efficiency vs. Load Current (V
OUT=1.5V)
Total Loss vs. Load Current (V
OUT=1.5V)
Losses
0
200
400
600
800
0.0
0.3
0.6
0.9
1.2
1.5
Output Current (A)
VOUT= 1.50V
TA=25°C
VIN= 5.0V
VIN= 3.3V
Losses
0
200
400
600
800
0.0
0.3
0.6
0.9
1.2
1.5
Output Current (A)
VOUT= 3.30V
TA=25°C
VIN= 5.0V
VIN= 4.0V
Efficiency vs. Load Current (V
OUT=3.3V)
Total Loss vs. Load Current (V
OUT=3.3V)
Efficiency vs. Load Current (V
IN=5.0V, VOUT=1.0V)
Efficiency vs. Load Current (V
IN=5.0V, VOUT=3.3V)
Efficiency
60%
65%
70%
75%
80%
85%
90%
95%
100%
0.0
0.3
0.6
0.9
1.2
1.5
Output Current (A)
L=1071AS-1R0N (33m
_typ)
VIN= 5.0V
VOUT= 1.0V
TA=25°C
L=1071AS-2R2N (50m
_typ)
L=LQM2HPN1R0MG0 (55m
_typ)
L=MDT2520-CR1R0M (60m
_typ)
Efficiency
60%
65%
70%
75%
80%
85%
90%
95%
100%
0.0
0.3
0.6
0.9
1.2
1.5
Output Current (A)
VIN= 5.0V
VOUT= 3.3V
TA=25°C
L=1071AS-1R0N (33m
_typ)
L=1071AS-2R2N (50m
_typ)
L=LQM2HP1R0MG0 (55m
_typ)
L=MDT2520-CR1R0M (60m
_typ)
Efficiency
60%
65%
70%
75%
80%
85%
90%
95%
100%
0.0
0.3
0.6
0.9
1.2
1.5
Output Current (A)
VOUT= 1.50V
TA=25°C
VIN= 5.0V
VIN= 3.3V
Efficiency
60%
65%
70%
75%
80%
85%
90%
95%
100%
0.0
0.3
0.6
0.9
1.2
1.5
Output Current (A)
VOUT= 3.30V
TA=25°C
VIN= 5.0V
VIN= 4.0V
Circuit Conditions: C
IN= 10uF/6.3V; COUT= 10uF/6.3V for L=2.2uH; COUT= 22uF/6.3V for L=1uH.
Unless otherwise noted, L= 2.2uH (TOKO: 1071AS-2R2M) and SC189 in MLPD-UT6 package.



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