UM1661 Datasheet, PDF (4/8 Pages) Union Semiconductor, Inc. – High Efficiency Low Noise PFM Step-Up DC/DC Converter

UM1661
Typical Operating Characteristics
(V_IN= 3.0V, V_CE= 3.0V, T_A = 25°C, unless otherwise noted)
Efficiency vs. Output Current
100
90 ^VIN=2.5V
80
70
60
50
40
30
20
10
0
0
20 40 60 80 100 120
Output Current(mA)
Efficiency vs. Output Current
100
90 ^VIN=3.0V
80
70
60
50
40
30
20
10
0
0
20 40 60 80 100 120
Output Current(mA)
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs. Output Current
VIN=6.0V
20 40 60 80 100 120
Output Current(mA)
CE Pin Bias Current vs. CE Voltage
80
70 VIN=VCE
60
50
40
30
20
10
0
0
1
2
3
4
5
6
CE Pin Voltage(V)
CE Pin Current vs. Temperature
50
45 VIN=VCE
40
VCE=6.0V
35
30
25
20
VCE=3.0V
15
10
VCE=2.5V
5
0
30 40 50 60 70 80 90 100
Temperature(^oC)
Quiescent Current vs. Supply Voltage
1.0
0.9 VCE=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
1
2
3
4
5
6
Supply Voltage(V)
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http://www.union-ic.com Rev.03 Mar.2012
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