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MCP73837

Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection

Microchip Technology 

MCP73837/8

2.0 TYPICAL PERFORMANCE CURVES

Note:

The graphs and tables provided following this note are a statistical summary based on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein

are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified

operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

Note: Unless otherwise indicated, VDD = [VREG(typical) + 1V], IOUT = 30 mA, and TA= +25°C, Constant-voltage mode.

4.210

4.205 TEMP = 25°C

4.200

4.195

4.190

4.185

4.180

4.175

4.170

4.165

4.160

4.5 4.8

IOUT = 50 mA

IOUT = 10 mA

IOUT = 100 mA

IOUT = 500 mA

IOUT = 1000 mA

5.0 5.3 5.5 5.8 6.0

Supply Voltage (V)

FIGURE 2-1:

Battery Regulation Voltage

(VBAT) vs. Supply Voltage (VDD).

2.0

VDD = Floating

1.6 VBAT = 4.2V

1.2

0.8

0.4

0.0

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

Temperature (°C)

FIGURE 2-4:

Output Leakage Current

(IDISCHARGE) vs. Ambient Temperature (TA).

4.210

4.205 IOUT = 10 mA

4.200

IOUT = 50 mA

VDD = 5.2V

4.195 IOUT = 100 mA

4.190 IOUT = 500 mA

4.185

IOUT = 1000 mA

4.180

4.175

4.170

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

Ambient Temperature (°C)

FIGURE 2-2:

Battery Regulation Voltage

(VBAT) vs. Ambient Temperature (TA).

2.0

1.8 VDD = Floating

TEMP = +25°C

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2

Battery Voltage (V)

FIGURE 2-5:

Output Leakage Current

(IDISCHARGE) vs. Battery Voltage (VBAT).

0.50

0.45

0.40

VDD = VBAT

TEMP = 25 °C

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0.00

3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2

Battery Voltage (V)

FIGURE 2-3:

Output Leakage Current

(IDISCHARGE) vs. Battery Regulation Voltage

(VBAT).

1000

900

800

700

600

500

400

300

200

100

0

1

VDD = 5.2V

Temp = 25°C

6 11 16 21 26 31 36 41 46 51 56 61

RPROG (kΩ)

FIGURE 2-6:

Charge Current (IOUT) vs.

Programming Resistor (RPROG).

DS22071A-page 8

© 2007 Microchip Technology Inc.

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