AIC1783A Datasheet, PDF (1/13 Pages) Analog Intergrations Corporation – Battery Charge Controller for Low Power Charging

AIC1783A
Battery Charge Controller for Low Power
Charging
„ ^FEATURES
z Fast Charge Control of NiMH/NiCd Batteries.
z Fast Charge Termination by: −ΔV, 0ΔV Safety
Timer, Maximum Voltage.
z Protection against Battery Voltage Fault.
z Pulsed Trickle Charge Mode.
z Quick and Easy Testing for Production.
z 8-pin DIP or SO Packages.
„ ^APPLICATIONS
Battery Fast Chargers for:
z Mobile Phones.
z Notebook and Laptop Personal Computers.
z Portable Power Tools and Toys.
z Portable Communication Equipment.
z Portable Video & Stereo Equipment.
„ ^DESCRIPTION
The AIC1783A fast charge controller IC is
designed for intelligent charging of NiMH or NiCd
batteries without the risk of overcharge. ^−ΔV
detection (-0.25%) and ^0ΔV detection (peak
voltage timer) are the primary methods
employed by the AIC1783A to terminate fast
charge. The fast charge can also be cut off by
maximum battery voltage along with the safety
timer to prevent charging under fault conditions of
the charging system or the battery itself.
The safety timer period is adjustable for flexible
usage that AIC1783A could be applied in the wide
range of battery capacity. Test mode is provided
for charger manufactures to dramatically reduce
production test time.
„ ^{TYPICAL APPLICATION CIRCUIT}
V_IN=5V
R3 10K D3 LL4148
2SC4672 ^{R2 0.5}
Q1 _D1 D2
R1 680
+
LL4148
C1 ^LL4148
47μF
2 Cells
NiMH/NiCd
R6
R4 _100K
68K
C2
R5
220K ^4.7μF
R7
100K
U1
1 _REF
VCC ⁸
2 _{TIMER VBT} 7
C3
R8
0.1μF ^120K
R9 _{3 MODE ICON 6}
200K
4 _{GND LED} 5
AIC1783A
LED1
R10
680
Analog Integrations Corporation
*Note: I_CHARGE=380mA @V_BAT=2.8V
Linear Charger for 2 Cells NiMH/NiCd Batteries
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: [phone] FAX: [phone] www.analog.com.tw
DS-1783AG-01 20100119
1