AIC1783
n
BLOCK DIAGRAM
MODE
GND
VCC
TIMER
MODE
Selection
Bandgap
Reference &
Voltage
Regulator
LED
Oscillator
Charge Control
REF
Battery Voltage
Protection Setting
Display
Control
Unit
ICON
State Machine
Charge
Control Unit
13-bit
A/D
Battery
Voltage
Protection
VBT
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PIN DESCRIPTIONS
PIN 1: REF-
Reference voltage input,
acceptable voltage range :
(V
CC
-1.4V) ~ (0.5V
CC
-0.4V)
PIN 2: TIMER- Determining the period of
safety timer with an external
resistor connected to GND.
PIN 3: MODE- Determining the mode of
operation for the AIC1783.
PIN 4: GND-
Power ground.
PIN 8: VCC-
PIN 7: VBT-
PIN 5: LED-
Open-drained output used to
indicate the battery charging
status.
PIN 6: ICON- Open-drained output, used to
control the charging current to
the battery.
Divided battery voltage input to
sense the battery voltage.
Power supply input at 5V±10%.
6
AIC [ ANALOG INTERGRATIONS CORPORATION ]
