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SC189CEVB-3 数据表(PDF) 6 Page - Semtech Corporation

部件名 SC189CEVB-3
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-3 数据表(HTML) 6 Page - Semtech Corporation

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6
SC189
Typical Characteristics (continued)
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.
Efficiency vs. Load Current (V
OUT=1.5V, SOT23-5)
Total Loss vs. Load Current (V
OUT=1.5V, SOT23-5)
Efficiency vs. Load Current (V
OUT=3.3V, SOT23-5)
Efficiency vs. Load Current (SOT23-5)
Efficiency vs. Load Current (SOT23-5)
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
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= 1.0V
TA=25°C
L=1071AS-1R0 (33m
_typ)
L=1071AS-2R2 (50m
_typ)
L=LQM2HPN1R0MG0 (55m
_typ)
L=MDT2520-CR1R0 (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)
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
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
Total Loss vs. Load Current (V
OUT=3.3V, SOT23-5)



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