MD1421ExxCPAL Series

Lithium-Ion Battery protection IC using high voltage CMOS process for overcharge, overdischarge and overcurrent protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge, discharging overcurrent, charging overcurrent, and short protection of the rechargeable Lithium-ion or Lithium-polymer battery can be detected. Each of these IC composed of four voltage detectors, short detection circuit, reference voltage sources, oscillator, counter circuit and logical circuits.

Outline

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.

Click the arrow icon in the table below to switch from ascending to descending order.

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Product name	Package	0V battery charge function	Overcharge detection voltage [V]	Overcharge release voltage [V]	Overdischarge detection voltage [V]	Overdischarge release voltage [V]	Discharging overcurrent detection voltage [V]	Charging overcurrent detection voltage [V]	Short detection voltage [V]	Overcharge detection delay time [s]	Overdischarge detection delay time [ms]	Discharging overcurrent detection delay time [ms]	Charging overcurrent detection delay time [ms]	Short detection delay time [ms]	Discharge current limit [A]	Charge current limit [A]
MD1421E28CPAL-R	PLP-4-1228	Permission	4.375	4.175	3.000	3.000	0.040	-0.0500	0.900	1.000	100.0	12.0	8.5	0.500	1.050	1.300
MD1421E34CPAL-R	PLP-4-1228	Permission	4.375	4.175	3.200	3.000	0.040	-0.0500	0.900	1.000	100.0	12.0	8.5	0.500	1.050	1.300
MD1421E35CPAL-R	PLP-4-1228	Prohibition	4.425	4.225	2.700	2.700	0.070	-0.0700	0.560	1.000	100.0	20.0	8.5	0.750	1.800	1.800
MD1421E36CPAL-R	PLP-4-1228	Permission	4.425	4.225	2.800	2.800	0.085	-0.0950	0.900	1.000	100.0	20.0	8.5	0.750	2.200	2.450
MD1421E39CPAL-R	PLP-4-1228	Prohibition	4.280		2.700	2.700	0.080	-0.0800	0.900	1.000	100.0	20.0	8.5	0.750	2.050	2.050
MD1421E41CPAL-R	PLP-4-1228	Prohibition	4.280	4.180	2.700	2.700	0.120	-0.1200	0.900	1.000	100.0	20.0	8.5	0.750	3.100	3.100
MD1421E43CPAL-R	PLP-4-1228	Prohibition	4.270	4.070	3.000	3.000	0.040	-0.0500	0.560	1.000	100.0	12.0	8.5	0.500	1.050	1.300
MD1421E44CPAL-R	PLP-4-1228	Permission	4.425	4.225	3.200	3.000	0.040	-0.0500	0.900	1.000	100.0	12.0	8.5	0.500	1.050	1.300
MD1421E48CPAL-R	PLP-4-1228	Permission	4.425	4.225	3.000	3.000	0.040	-0.0500	0.900	1.000	100.0	12.0	8.5	0.500	1.050	1.300
MD1421E50CPAL-R	PLP-4-1228	Prohibition	4.280	4.180	2.700	2.700	0.140	-0.0900	0.900	1.000	100.0	12.0	8.5	0.500	3.600	2.300
MD1421E51CPAL-R	PLP-4-1228	Prohibition	4.425		2.800	2.800	0.085	-0.0950	0.900	1.000	100.0	20.0	8.5	0.750	2.200	2.450
MD1421E54CPAL-R	PLP-4-1228	Permission	4.425	4.225	3.200	2.700	0.110	-0.0500	0.900	1.000	100.0	48.0	8.5	0.500	2.800	1.300
MD1421E59CPAL-R	PLP-4-1228	Permission	4.410	4.210	3.000	3.000	0.040	-0.0800	0.560	1.000	100.0	12.0	8.5	0.500	1.050	2.050
MD1421E60CPAL-R	PLP-4-1228	Permission	4.480	4.280	3.000	3.000	0.080	-0.1300	0.900	1.000	100.0	20.0	25.0	0.750	2.050	3.350
MD1421E62CPAL-R	PLP-4-1228	Permission	4.475	4.275	3.000	2.800	0.080	-0.0900	0.560	1.000	100.0	12.0	8.5	0.500	2.050	2.300
MD1421E63CPAL-R	PLP-4-1228	Permission	4.270	4.070	3.000	3.000	0.040	-0.0500	0.560	1.000	100.0	12.0	8.5	0.500	1.050	1.300
MD1421E65CPAL-R	PLP-4-1228	Permission	4.455	4.255	2.900	2.500	0.160	-0.1750	0.560	1.000	100.0	12.0	8.5	0.500	4.100	4.500
MD1421E66CPAL-R	PLP-4-1228	Permission	4.495	4.295	2.900	2.300	0.180	-0.1800	0.560	1.000	100.0	20.0	32.5	0.750	4.600	4.600