MM1357
features enhanced functions for current switching and for overcharge detection and other kinds of protection. The control output is capable of driving a photocoupler LED. The charging current can be switched between high and low currents, and each can also be varied externally.
Features
1. Charging voltage 2. Charging current (switchable between high and low levels, variable)
3. Reference voltage
: Can be set externally High : 320m V typ. Low : 145m V typ. : 1.207V typ.
Package
SOP-14B
Applications
1. Switching regulator 2. AC adapter 3. Lithium ion battery charger
MITSUMI
Control of Lithium Ion Batteries (switching regulator secondary) (two cells) MM1357
Block Diagram
Pin Assignment
14 13 12 11 10 9 8 1234567
SIP-14B
1 OUT 8 CC OUT
2 CFB 9 S-GND
3 CSR 10 VFB+
CC IN
ADJ1
12 REG OUT
P-GND
VREF
7 ADJ2 14 VFB-
MITSUMI
Control of Lithium Ion Batteries (switching regulator secondary) (two cells) MM1357
Pin Description
Pin no. Pin name...
