MD1421ExxCPAL Series

The MD1421ExxCPAL series are protection IC with integrated MOSFET for protection of the rechargeable lithium-ion or lithium-polymer battery. The overcharge, overdischarge and discharging and charging overcurrent protection of the rechargeable one-cell lithium-ion or lithium-polymer battery can be detected.

For one-cell

1. Range and accuracy of detection/release voltage
●Overcharge detection voltage 4.10V to 4.45V, 5mV steps Accuracy±20mV
●Overcharge release voltage 3.90V to 4.30V (Note1) Accuracy±50mV
●Overdischarge detection voltage 2.00V to 3.00V (Note2) Accuracy±100mV
●Overdischarge release voltage 2.00V to 3.20V (Note2) Accuracy±100mV
●Discharge overcurrent detection voltage 40mV to 180mV, 5mV steps Accuracy±5mV
●Charging overcurrent detect voltage -180mV to -50mV, 5mV step Accuracy±15mV
●Short detection voltage Selection from 0.56, 0.90V Accuracy±100mV
●Over voltage charger detection voltage VDD-8.0V fixed Accuracy±2.0V
●Over voltage charger release voltage VDD-7.3V fixed Accuracy±1.5V

2. Range of detection delay time
●Overcharge detection delay time Selection from 1.0s, 4.5s, 6.25s
●Overdischarge detection delay time Selection from 100ms, 256ms
●Discharging overcurrent detection delay time Selection from 8ms, 12ms, 16ms, 20ms, 34ms
●Charging overcurrent detection delay time Selection from 8.5ms, 25ms, 32.5ms
●Short detection delay time Selection from 0.50ms, 0.75ms, 1.00ms

3. 0V battery Charge functionSelection from ”Permission” or ”Prohibition”
4. The overcharge detection delay timer reset time function(function for the pulse charge) is provided.fixed
5. Low current consumption
●Normal mode Typ. 3.0µA, Max. 5.2µA
●Stand-by mode Max. 0.1µA (For ”Charger connection release” the overdischarge release condition.)
Max. 0.5µA (For ”Voltage release” the overdischarge release condition.)

6. MOS-FET Source to Source on state resistance Typ. 38.0mΩ (@VCC=3.7V)

Note1 : Hysteresis voltage between Overcharge detection and release voltage is selectable from 0.10V/0.15V/0.20V/0.25V
Note2 : Please inquire to us about details of the setting of Overdischarge detection and release voltage.

• PLP-4-1228