SS6782G datasheet(8/19 Pages) SSC

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SS6782G

9/21/2005 Rev.3.01

BLOCK DIAGRAM

LEB2 LEB1 LEA2

LEA1

ICOB

ICOA

Display

Control

Unit

TMR

Timing

Control Unit

GND VCC

Bandgap

Reference

& Voltage

Regulator

MODE

Selection

SEL3

Battery Voltage

& Temperature

Protection

Setting

SEL2

SEL1

LED Display&

Trickle Charge

Duty Setting

Charge Control

State Machine

CHARGE END

DSW

DIS

BBV

ATS

ADJ

Charge

Control Unit

∆T/∆t Detection

Setting

Battery Temperature

Protection

Battery Voltage

Protection

Discharge

Control Unit

13-bit A/D

Oscillator

BTS

ABV

PIN DESCRIPTIONS

PIN 1: ABV - Battery voltage input to sense

the voltage of battery pack A.

PIN 5: VCC

- Power

supply

input

±10%.

PIN 6: ADJ

- For adjusting the slope of

∆T/∆t.

Acceptable voltage range for

this pin is approximately 0.28V

to 3.8V. If the voltage is higher

than (VCC - 0.3V), then

∆T/∆t

detection is disabled.

PIN 2: BBV - Battery voltage input to sense

the voltage of battery pack B.

PIN 3: DIS

- Push-pull output, used to control

an external transistor to discharge

the battery pack B.

DIS is active high when the

discharge function is enabled.

PIN 7: SEL3 - Determines the acceptable

voltage range of ABV and

BBV pins and the mode of the

tem

perature protection function.

PIN 4: BTS - The battery cell temperature of

pack B is represented as a voltage

input to the SS6782G on this pin.

The acceptable voltage range of

the

BTS pin is 0.29Vcc to 0.72Vcc.

PIN 8: TMR

- Determines the period of the

safety timer with an external

resistor connected to GND.

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