MB39A125 Datasheet, PDF (27/64 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB39A125/126
3. Detection Function
(1) AC adapter voltage detection block (AC Comp.)
When ACIN terminal (pin 7) voltage is lower than 1.3 V (Typ) , AC adapter voltage detection block (AC Comp.)
outputs “Hi-Z” level to the ACOK terminal (pin 5) and outputs “L” level to the XACOK terminal (pin 18) . When
CTL terminal (pin 14) is set to “L” level, ACOK terminal (pin 5) and XACOK terminal (pin 18) are fixed to “Hi-Z” level.
ACIN
ACOK
XACOK
H
L
Hi-Z
L
Hi-Z
L
4. Switch Function : MB39A126
The charge voltage can be set to 16.8 V/12.6 V with the SEL terminal (pin 11) .
SEL function table
SEL
DC/DC output setting voltage
H
16.8 V
L
12.6 V
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