MITSUMI
Lithium-ion battery charge control IC MM3458
Lithium-ion battery charge control IC
Monolithic IC MM3458
Outline
This IC does not require an externally provided sensing resistor or reverse-current protection diode, enabling
reductions in the component count and the amount of generated heat.
Battery safety is ensured by limiting the charging current and battery voltage when the battery is at high and
low temperatures.
It conforms to the new PSE law.
Features
1. BAT Regulation Voltage
4.2V±30mV(0.7%)
2. Fast Charge Current
558mA±5%
3. Preliminary current, high-speed charging current, charging completion current can be set using external
resistors (maximum charging current is 1.5 A) .
4. A battery temperature detection function is provided via a thermistor, and so the charging voltage and
current can be controlled according to the battery temperature.
5. Chip temperature detection enables control of IC temperature rises at high-power charging. The battery
can therefore be charged with optimal charging regulation.
6. Built-in charging timer. Charging timer time can be freely set using external resistor.
7. Small package
SSON-10A (2.7×2.5×0.6mm)
Package
SSON-10A
Applications
1.
2.
3.
4.
Cellular phones
Portable music players
Digital still cameras
Portable game devices
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
