MITSUMI
1cell Li-ion/Li-polymer battery protection IC MD1421ExxCPAL Series
1cell Li-ion/Li-polymer battery protection IC
MD1421ExxCPAL Series
Outline
MD1421ExxCPAL series are protection IC with integrated MOSFET for protection of the rechargeable lithium-
ion or lithiumpolymer battery. The overcharge, overdischarge and discharging and charging overcurrent
protection of the rechargeable one-cell lithium-ion or lithium-polymer battery can be detected.
(Unless otherwise specified, Topr=+25°C)
Features
(1) Range and accuracy of detection/release voltage
Overcharge detection voltage
4.10V to 4.45V, 5mV steps
Accuracy 20mV
Accuracy 25mV (Topr=−5°C to +60°C)
Accuracy 50mV
Overcharge release voltage
3.90V to 4.30V (Note1)
2.00V to 3.00V (Note2)
2.00V to 3.20V (Note2)
40mV to 180mV, 5mV steps
−180mV to −50mV, 5mV step
Selection from 0.56, 0.90V
VDD−8.0V fixed
Overdischarge detection voltage
Overdischarge release voltage
Discharge overcurrent detection voltage
Charging overcurrent detect voltage
Short detection voltage
Accuracy 100mV
Accuracy 100mV
Accuracy 5mV
Accuracy 15mV
Accuracy 100mV
Accuracy 2.0V
Over voltage charger detection voltage
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
Selection from 100ms, 256ms
Overdischarge detection delay time
Discharging overcurrent detection delay time
Charging overcurrent detection delay time
Short detection delay time
Selection from 8ms, 12ms, 16ms, 20ms, 34ms
Selection from 8.5ms, 25ms, 32.5ms
Selection from 0.50ms, 0.75ms, 1.00ms
(3) 0V battery charge function
Selection 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
Max. 0.1µA
Stand-by mode
(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. 38.0m (@VCC=3.7V)
(7) Absolute maximum ratings
VCC pin
−0.3V to +12V
VCC−24V to VCC+0.3V
Max. 24V
V− pin
Drain-source voltage
Drain current
Max. 6V
Total Power Dissipation
Storage temperature
Operation temperature
Max. 1.0W
−40°C to +125°C
−40°C to + 85°C
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.
• 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.
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