MM1639
MM1639 is Lithium-Ion Battery Charge Control manufactured by MITSUMI.
Features
1. Operating supply voltage
2.7~5.9V
2. Operating ambient temperature
-20~70ºC
3. Current consumption
5.0m A typ.
4. Low voltage detection voltage
2.0V typ.
5. BAT pin output voltage
4.20±0.03V (Ta=0~50ºC)
6. Recharge detection voltage
3.90V typ.
7. Precharge detection voltage
2.90V typ.
8. Fast-charge current setting Rsense=0.22V/Iq CHG Example: For 0.70A, 0.22V/0.70A=0.31Ω (Rsence)
Precharge current 0.026V/Rsence=0.02...
