One Cell Li-ion and Li-poly Battery Protection IC

Overdischarge Current Detection Delay Time

10

mS

Load Short-Circuiting Detection Delay Time

80

μS

Note 3: *The parameter is guaranteed by design.

Functional Block Diagram

Figure 3. Functional Block Diagram

Functions Description

The

monitors the voltage and current of a battery and protects it from being damaged due to overcharge

voltage, over discharge voltage, over discharge current, and short circuit conditions by disconnecting the batter

from the load or charger. These functions are required in order to operate the battery cell within specified

limits.The device requires only one external capacitor. The MOSFET is integrated and its RSS(ON) is as low as

50mΩ typical.

Normal operating mode

If no exception condition is detected, charging and discharging can be carried out freely. This condition is called

the normal operating mode.

Overcharge Condition

HM5434