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AIC1761 Datasheet

  • AIC1761

  • Analog Devices [BATTERY CHARGE CONTROLLER]

  • AD

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AIC1761/1766
BATTERY CHARGE CONTROLLER
SPEC NO: DS-1761-02
FEATURES
Reliable Fast Charge Control of NiMH/NiCd Bat-
teries.
Quick and Easy Testing for Production.
Fast Charge Termination by:
1. Accurate -鈭哣 Detection Level with Respect to
Peak Battery Voltage Value.
AIC1761 ................鈥︹€︹€︹€︹€?....... -1%
AIC1766 ............鈥︹€︹€︹€?.鈥︹€?..... -0.25%
2. Peak Voltage Timer (0鈭哣).
Adjustable Fast Charge Safety Timer.
Protection against Temperature Fault.
Protection against Short-Circuited and Open Bat-
teries.
Wide Operation Voltage Range: 9V to 18V, no Ex-
tra Regulator Needed.
Large Battery Voltage Detection Range: 0.65V to
3.7V.
LED Drivers to Indicate Charge Status or Fault
Conditions.
Voltage Reference Output.
Space-Saving Packages:
8-PIN DIP, SO
14-PIN DIP, SO
DESCRIPTION
The AIC1761/1766 fast charge controller IC is
designed for intelligent charging of NiMH or NiCd
batteries without overcharging. It detects a voltage
drop (-鈭哣) occurring in the final stage of a fast
charging cycle and correspondingly controls the
charging current. Fast charge can also be cut off
by a peak voltage timer (0鈭哣).
The detection of -鈭哣 is a very reliable method to
terminate fast charging for NiMH and NiCd batter-
ies. The AIC1761/1766 uses -鈭哣 detection as one
of primary decisions for fast charge cut-off. The -
鈭哣
value for the AIC1761 is as small as 16mV per
cell,
suitable
for
NiCd
batteries.
The
-鈭哣 value for the AIC1766 is as small as 4mV per
cell, particularly suitable for NiMH as well as the
NiCd batteries. The peak voltage timer is particu-
larly useful when the voltage drop at the end of
charge for some batteries, e.g. NiMH cells, is not
pronounced enough for reliable detection. An ad-
justable safety timer (3 settings) is used as a back-
up termination method. Provisions are made with
the AIC1761/1766 to prevent fast charge under
temperature fault conditions. Two LED outputs are
used to indicate the charging status. Another flash
LED output can be used alone to indicate charge
status.
AC mode allows the battery to drive its loads while
being charged. Test mode is provided to dramati-
cally reduce production test time.
APPLICATIONS
Battery Chargers for :
Mobile Phones
Notebook and Laptop Personal Computers
Portable Power Tools and Toys
Portable Communication Equipments
Portable Video and Stereo Equipments
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
1

AIC1761 PDF文件相關(guān)型號

AIC1761-CN14,AIC1761-CS08,AIC1761-CS14,AIC1766-CN14

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