MB39A115 Datasheet, PDF (35/42 Pages) Fujitsu Component Limited. – 5 ch DC/DC Converter IC with Synchronous Rectification

MB39A115
ch.1 and ch.2 Efficiency vs. Load Current
100
95
IO1 (ch.1) 120 mA: Discontinuance mode
IO2 (ch.2) 100 mA: Discontinuance mode
90
VIN = 7.2 V
Ta = +25 °C
ch.2
85
ch.1
80
75
70
65
60
0
Note : Only concerned channel is ON.
Including external SW Tr driving current
50 100 150 200 250 300 350 400 450 500 550 600
Load Current IO (mA)
100
95
90
85
80
75
70
65
60
0
ch.3 and ch.4 Efficiency vs. Load Current
ch.4
ch.3
VIN = 7.2 V
Ta = +25 °C
IO3 (ch.3) 50 mA:
Discontinuance mode
IO4 (ch.4) 30 mA:
Discontinuance mode
Note : Only concerned channel is ON.
Including external SW Tr driving current
50
100
150
200
250
300
350
400
Load Current IO (mA)
(Continued)
35