AIC1782CS Ver la hoja de datos (PDF) - Analog Intergrations

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AIC1782CS

Dual-Battery Charge Controller

Analog Intergrations 

AIC1782

BLOCK DIAGRAM

GND VCC

TMR

LEB2 LEB1 LEA2

MODE

SEL3

SEL1

SEL2

ADJ

MODE

Selection

Bandgap

Reference

& Voltage

Regulator

Oscillator

Timing

Control Unit

Battery Voltage

& Temperature

Protection

Setting

LED Display&

Trickle Charge

Duty Setting

Charge Control

State Machine

Display

Control

Unit

Charge

Control Unit

∆T/∆t Detection

Setting

Battery Temperature

Protection

ATS BTS

13-bit A/D

Battery Voltage

Protection

Discharge

Control Unit

+-

CHARGE END

ABV BBV

LEA1

ICOB

ICOA

DIS

DSW

PIN DESCRIPTIONS

PIN 1: ABV - Divided battery voltage input to

sense the battery voltage of

pack A.

PIN 2: BBV - Divided battery voltage input to

sense the battery voltage of

pack B.

PIN 3: DIS

- Push-pull output, used to con-

trol an external transistor to dis-

charge the battery of pack B.

DIS is active high when function

of discharge is enabled.

PIN 4: BTS - The battery cell temperature of

pack B is represented as a volt-

age input to the AIC1782 at this

pin. The acceptable voltage

range of BTS pin is 0.29 VCC to

0.72 VCC.

PIN 5: VCC - Power supply input at 5V ±

10%.

PIN 6: ADJ

- For adjusting the slope of

∆T / ∆t . Acceptable voltage

range for this pin is approxi-

mately 0.28V to 3.8V. If volt-

age higher than VCC - 0.3V,

function of ∆T / ∆t detection is

disabled.

PIN 7: SEL3

- Determining the acceptable

voltage range of ABV and

BBV pins and mode of tem-

perature protection function.

7

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