• 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.

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.

Features

(Unless otherwise specified, Topr=+25°C)

(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)

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 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

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. 38.0m

(@VCC=3.7V)

(7) Absolute maximum ratings

VCC pin

−0.3V to +12V

V− pin

VCC−24V to VCC+0.3V

Drain-source voltage

Max. 24V

Drain current

Max. 6V

Total Power Dissipation

Max. 1.0W

Storage temperature

−40°C to +125°C

Operation temperature

−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.