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AIC1802

Analog Intergrations Corporation
Part Number AIC1802
Manufacturer Analog Intergrations Corporation
Description Two-Cell Lithium-Ion Battery Protection IC
Published Mar 23, 2005
Detailed Description AIC1802 Two-Cell Lithium-Ion Battery Protection IC n FEATURES l n DESCRIPTION The AIC1802 battery protection IC is des...
Datasheet PDF File AIC1802 PDF File

AIC1802
AIC1802

Overview
AIC1802 Two-Cell Lithium-Ion Battery Protection IC n FEATURES l n DESCRIPTION The AIC1802 battery protection IC is designed to protect lithium-ion batteries from damage due to overcharging, overdischarging, and overcurrent for two series cells in portable phones and laptop computers.
It can be a part of the low-cost charge control system within a twocell lithium-ion battery pack.
Safe and full utilization charging is ensured by the accurate ± 30mV overcharge detection.
Three different specification values for overcharge protection voltage are provided for various protection requirements.
The very low standby current drains little current from the cells while in storage.
Ultra-Low Quiescent Current at 10 µA (V CC =7V, VC =3.
5V).
Ultra-Low Power-Down Current at 0.
2µA (V CC =3.
8V, VC =1.
9V).
Wide Supply Range: 2 to 18V.
Precision Overcharge Protection Voltage 4.
35V ± 30mV for the AIC1802A 4.
30V ± 30mV for the AIC1802B 4.
25V ± 30mV for the AIC1802C l l l l Built-in Delay Circuits for Overcharge, Overdischarge and Overcurrent Protection.
Overcharge and Overdischarge Delay Time can be Extended by External Capacitors.
Built-in Cell-balancing Bleeding Network under Overcharge Condition.
l l n APPLICATIONS l Protection IC for Two-Cell Lithium-Ion Battery Pack.
n TYPICAL APPLICATION CIRCUIT V BAT+ **R1 C1 1µ F C2 1µ F **R2 M1 CEM9926 2 OD AIC1802 CS 7 8 VCC TC 5 *CTC 6 VC TD 3 *CTD 4 GND OC 1 R3 1M Q1 R6 1K M2 CEM9926 BATTERY 1 BATTERY 2 R4 1M R5 C3 0.
01µF 1M VBAT- *CTC & CTD are optional for delay time adjustment.
**R1 & R2: Refer application informations.
Protection Circuit for Two-Cell Lithium-Ion Battery Pack DS-1802-03 July 13, 00 www.
analog.
com.
tw 1 AIC1802 n ORDERING INFORMATION AIC1802 XCX PACKAGE TYPE S: SOP-8 OVERCHARGE PROTECTION VOLTAGE A: 4.
35V B: 4.
30V C: 4.
25V ORDER NUMBER AIC1802ACS AIC1802BCS AIC1802CCS (PLASTIC SO8) PIN CONFIGURATION TOP VIEW OC 1 OD 2 TD 3 GND 4 8 VC 7 CS 6 VC 5 TC n ABSOLUTE MAXIMUM RATINGS Supply Voltage .
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