MCP73123_10 Datasheet, PDF (11/34 Pages) Microchip Technology – Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection

MCP73123/223
TYPICAL PERFORMANCE CURVES (CONTINUED)
Note: Unless otherwise indicated, V_DD = [V_REG(Typical) + 1V], I_OUT = 10 mA and T_A= +25°C, Constant-voltage mode.
Charge Current
Input Voltage
Battery Voltage
FIGURE 2-13:
(50 ms/Div).
Overvoltage Protection Start
7.0
1
6.0
Thermal Regulation
0.9
0.8
5.0
0.7
4.0
0.6
0.5
3.0
0.4
2.0
0.3
V_DD = 5V
1.0 ^{RPROG = 1 kΩ}
1100 mAh LiFePO₄ Battery
0.2
0.1
0.0
0
0 10 20 30 40 50 60 70
Time (Minutes)
FIGURE 2-16:
Complete Charge Cycle
(1100 mAh LiFePO₄ Battery).
Input Voltage
Battery Voltage
Charge Current
Source Voltage (V)
Output Ripple (mV)
FIGURE 2-14:
(50 ms/Div).
Overvoltage Protection Stop
FIGURE 2-17:
Line Transient Response
(I_LOAD = 10 mA, Source Voltage: 2V/Div, Output
Ripple: 100 mV/Div, Time: 100 µs/Div).
Output Ripple (mV)
Output Current (mA)
Source Voltage (V)
Output Ripple (mV)
FIGURE 2-15:
Load Transient Response
(I_LOAD = 50 mA, Output Ripple: 100 mV/Div,
Output Current: 50 mA/Div, Time: 100 µs/Div).
FIGURE 2-18:
Line Transient Response
(I_LOAD = 100 mA, Source Voltage: 2V/Div, Output
Ripple: 100 mV/Div, Time: 100 µs/Div).
© 2010 Microchip Technology Inc.
DS22191B-page 11