BL8542B
TYPICAL PERFORMANCE CHARACTERISTICS
Typical values are tested at T
A
=25 C, unless otherwise specified.
Efficiency vs. Output Current
(Vout=3.3V; Ta=25℃)
100
90
80
70
60
50
40
30
20
1
10
100
1000
100
o
Efficiency vs. Output Current
(Vout=5V; Ta=25℃)
VIN=2.4V
VIN=1.8V
V IN=1.2V
V IN=2.4V
90
V IN=1.2V
VIN=1.8V
Efficiency(%)
80
70
60
50
40
30
20
1
Efficiency(%)
10
Output Current(mA)
Output Current(mA)
100
1000
Output Voltage vs. Output Current
(
Vout=3.3V;Ta=25℃)
3.25
Minimum Start-Up Voltage vs. Output Current
(Vout=3.3V，Ta=25℃)
2
3.2
1.8
Output Voltage(V)
VIN=1.2V
3.15
Start-up Voltage(V)
450
1.6
VIN=1.8V
3.1
VIN=2.4V
1.4
1.2
3.05
1
0.8
3
0
50
100
150
200
250
300
350
400
0.6
0
20
40
60
80
100
120
140
160
Output Current(mA)
Output Current(mA)
Maximum Output Current vs. Input Voltage
(L=4.7uH，Ta=25℃)
700
No Load Input Current vs. Inpout Voltage
(
VOUT=3.3V；Ta=25℃；No load)
400
350
Maximum Output Current(mA)
600
Input Current(uA)
3.5
4
500
400
300
200
100
VOUT=3.3V
300
250
200
150
100
50
VOUT=5V
0
0.5
1
1.5
2
2.5
3
0
1.5
1.8
2.1
2.4
2.7
3
Input Voltage(V)
Input Voltage(V)
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