MIC79110_07 Datasheet, PDF (4/14 Pages) Micrel Semiconductor – Simple 1.2A Linear Li-Ion Battery Charger

Micrel, Inc.
MIC79110
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential. For outputs below 2.5V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.5V. Minimum input
operating voltage is 2.5V.
4. V_NOM denotes the nominal output voltage.
5. IR_SET = (0.2V/R_SET) × 1000
6. Output Current I_EOC when Digital End-of-Charge output goes high impedance. Currents greater than I_EOC, the D_EOC output is low, currents lower
than I_EOC, D_EOC is high impedance.
7. I_EOC = (0.2V/R_EOC) × 1000
8. I_SOURCE is the current output from A_CHG pin. A resistor to ground from the A_CHG pin will program a voltage that is proportional to the output current.
Block Diagram
V_IN
Thermal
Protection
SD
Shutdown
Control
R_SET
Current
Limit Set
Current
Limit Sense
+
V_REF
End of
Charge
Detect
BAT
SNS
D_EOC
A_CHG
R_EOC GND
MIC79110 Block Diagram
Li-Ion
October 2007
4
M9999-102507