PDF AIC1783A Data sheet ( Hoja de datos )

Número de pieza	AIC1783A
Descripción	Battery Charge Controller
Fabricantes	Analog Intergrations Corporation
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No Preview Available ! 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 VIN=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: ICHARGE=380mA @VBAT=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: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw DS-1783AG-01 20100119 1 1 page AIC1783A TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 2.80 2.76 2.72 2.68 2.64 2.60 0 20 40 60 80 Temperature (°C) Fig. 7 VBT (High) Limit vs. Temperature 0.84 0.80 0.76 0.72 0.68 0.64 0 20 40 60 Temperature (°C) Fig. 8 VBT (Low) Limit vs. Temperature (After Initial Timer) 80 0.20 33 0.18 30 0.16 27 0.14 24 0.12 0 Fig. 9 20 40 60 80 Temperature (°C) VBT (Low) Limit vs. Temperature (During Initial Timer) 21 0 20 40 60 80 Temperature (°C) Fig.10 Output Impedance vs. Temperature (LED, ICON Pins) 5 5 Page AIC1783A APPLICATION EXAMPLE C1 1μF R9 390K C7 470P 1 DC 2 DE 3 CF 4 GND U3 8 BOOST 7 IS VCC 6 5 FB AIC1563 VIN 11~15V R10 120/0.25W D4 1N4148 D3 C5 1μF R1 1K 220μH SS24 L1 D1 SS24 + C2 220μF D2 C3 0.1μF IN4148 RS 0.5/0.25W + C8 220μF U1 78L05 VIN VOUT + GND + C6 R3 10μF 100K R4 120K R2 BAT1 240K R11 100K R5 C4 + C9 120K 0.1μF 4.7μF C10 R12 47nF 150K LED1 RED 1 REF U2 8 VCC 2 TIMER 7 VBT 3 MODE 6 ICON 4 GND 5 LED AIC1783A R6 R7 R8 680 47K 10K Q1 MMBT2222A *: 2~4 NiMH/NiCd cells Note: Charge Current: 0.3V/Rs Ampere Safety Timer: 120 min Fig. 14 Switching Battery Charger Circuit with Wide Input Voltage Range 11 11 Page

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