FEATURES
1. Charging voltage 2. Charging current (switchable between high and low levels, variable) 3. Reference voltage : Can be set externally High : 320mV typ. Low : 145mV 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+ 4 CC IN 11 VCC 5 ADJ1 12 REG OUT 6 P-GND 13 VREF 7 ADJ2 14 VFB- MITSUMI Control of Lithium Ion Batteries (switching regulator secondary) (two cells) MM1357 Pin DESCRIPTION
Pin no. Pin name Input/output Function 1 OUT Output Output pin for charging control An external photocoupler is controlled for constant-current, constant-voltage charging control. Amp inverting input pin for current control 2 CFB Input An external capacitor (approx. 0.1 µF) is connected between CFB and OUT, and phase compensation used to improve oscillation.
Mitsumi Electric
