MCP73831 Datasheet - Adafruit
MCP73831 Datasheet - Adafruit MCP73831 Datasheet - Adafruit
MCP73831 TYPICAL PERFORMANCE CURVES (CONTINUED) NOTE: Unless otherwise indicated, V DD = [V REG (typ.) + 1V], I OUT = 10 mA and T A = +25°C, Constant-Voltage mode. Source Voltage (V) 14 12 10 8 6 4 2 0 -2 I OUT = 10 mA C OUT = 4.7 µF, X7R Ceramic 0.10 0.05 0.00 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 Output Ripple (V) Output Current (A) 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 -0.20 C OUT = 4.7 µF, X7R Ceramic 0.10 0.05 0.00 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 Output Ripple (V) 140 160 180 200 Time (µs) Time (µs) FIGURE 2-13: Line Transient Response. FIGURE 2-16: Load Transient Response. Source Voltage (V) 14 12 10 8 6 4 2 0 -2 0 20 I OUT = 100 mA C OUT = 4.7 µF, X7R Ceramic 40 60 80 100 120 140 160 180 200 0.10 0.05 0.00 -0.05 -0.10 -0.15 -0.20 -0.25 -0.30 Output Ripple (V) Battery Voltage (V) 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 20 MCP73831-2AC/IOT V DD = 5.2V R PROG = 10 kΩ 40 60 80 100 120 140 160 180 120 100 80 60 40 20 0 Charge Current (mA) Time (µs) Time (s) FIGURE 2-14: Line Transient Response. FIGURE 2-17: Complete Charge Cycle (180 mAh Li-Ion Battery). Output Current (A) 0.35 0.04 0.30 0.02 0.25 0.00 0.20 -0.02 0.15 -0.04 0.10 -0.06 0.05 -0.08 0.00 C OUT = 4.7 µF, X7R Ceramic -0.10 -0.05 -0.12 0 20 40 60 80 100 120 140 160 180 200 Time (µs) FIGURE 2-15: Load Transient Response. Output Ripple (V) Battery Voltage (V) 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 MCP73831-2AC/IOT V DD = 5.2V R PROG = 2 kΩ 30 60 90 FIGURE 2-18: Complete Charge Cycle (1000 mAh Li-Ion Battery). 120 Time (s) 150 180 210 240 600 500 400 300 200 100 0 Charge Current (mA) DS21984A-page 8 © 2005 Microchip Technology Inc.
MCP73831 3.0 PIN DESCRIPTION The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLES DFN Pin No. SOT23-5 Symbol Function 1 4 V DD Battery Management Input Supply 2 — V DD Battery Management Input Supply 3 3 V BAT Battery Charge Control Output 4 — V BAT Battery Charge Control Output 5 1 STAT Charge Status Output 6 2 V SS Battery Management 0V Reference 7 — NC No Connection 8 5 PROG Current Regulation Set and Charge Control Enable 3.1 Battery Management Input Supply (V DD ) A supply voltage of [V REG (typ.) + 0.3V] to 6V is recommended. Bypass to V SS with a minimum of 4.7 μF. 3.2 Battery Charge Control Output (V BAT ) Connect to positive terminal of battery. Drain terminal of internal P-channel MOSFET pass transistor. Bypass to V SS with a minimum of 4.7 μF to ensure loop stability when the battery is disconnected. 3.4 Battery Management 0V Reference (V SS ) Connect to negative terminal of battery and input supply. 3.5 Current Regulation Set (PROG) Preconditioning, fast charge, and termination currents are scaled by placing a resistor from PROG to V SS . The charge management controller can be disabled by allowing the PROG input to float. 3.3 Charge Status Output (STAT) STAT is a tri-state logic output for connection to an LED for charge status indication. Alternatively, a pull-up resistor can be applied for interfacing to a host microcontroller. © 2005 Microchip Technology Inc. DS21984A-page 9
- Page 1 and 2: MCP73831 Miniature Single Cell, Ful
- Page 3 and 4: MCP73831 1.0 ELECTRICAL CHARACTERIS
- Page 5 and 6: MCP73831 AC CHARACTERISTICS Electri
- Page 7: TYPICAL PERFORMANCE CURVES (CONTINU
- Page 11 and 12: MCP73831 4.5 Constant-Voltage Mode
- Page 13 and 14: MCP73831 6.0 APPLICATIONS The MCP73
- Page 15 and 16: MCP73831 7.0 PACKAGING INFORMATION
- Page 17 and 18: MCP73831 5-Lead Plastic Small Outli
- Page 19 and 20: MCP73831 APPENDIX A: REVISION HISTO
- Page 21 and 22: MCP73831 PRODUCT IDENTIFICATION SYS
- Page 23 and 24: Note the following details of the c
<strong>MCP73831</strong><br />
TYPICAL PERFORMANCE CURVES (CONTINUED)<br />
NOTE: Unless otherwise indicated, V DD = [V REG (typ.) + 1V], I OUT = 10 mA and T A = +25°C, Constant-Voltage mode.<br />
Source Voltage (V)<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
-2<br />
I OUT = 10 mA<br />
C OUT = 4.7 µF, X7R Ceramic<br />
0.10<br />
0.05<br />
0.00<br />
-0.05<br />
-0.10<br />
-0.15<br />
-0.20<br />
-0.25<br />
-0.30<br />
Output Ripple (V)<br />
Output Current (A)<br />
1.40<br />
1.20<br />
1.00<br />
0.80<br />
0.60<br />
0.40<br />
0.20<br />
0.00<br />
-0.20<br />
C OUT = 4.7 µF, X7R Ceramic<br />
0.10<br />
0.05<br />
0.00<br />
-0.05<br />
-0.10<br />
-0.15<br />
-0.20<br />
-0.25<br />
-0.30<br />
0<br />
20<br />
40<br />
60<br />
80<br />
100<br />
120<br />
140<br />
160<br />
180<br />
200<br />
0<br />
20<br />
40<br />
60<br />
80<br />
100<br />
120<br />
Output Ripple (V)<br />
140<br />
160<br />
180<br />
200<br />
Time (µs)<br />
Time (µs)<br />
FIGURE 2-13:<br />
Line Transient Response.<br />
FIGURE 2-16:<br />
Load Transient Response.<br />
Source Voltage (V)<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
-2<br />
0<br />
20<br />
I OUT = 100 mA<br />
C OUT = 4.7 µF, X7R Ceramic<br />
40<br />
60<br />
80<br />
100<br />
120<br />
140<br />
160<br />
180<br />
200<br />
0.10<br />
0.05<br />
0.00<br />
-0.05<br />
-0.10<br />
-0.15<br />
-0.20<br />
-0.25<br />
-0.30<br />
Output Ripple (V)<br />
Battery Voltage (V)<br />
6.0<br />
5.0<br />
4.0<br />
3.0<br />
2.0<br />
1.0<br />
0.0<br />
0<br />
20<br />
<strong>MCP73831</strong>-2AC/IOT<br />
V DD = 5.2V<br />
R PROG = 10 kΩ<br />
40<br />
60<br />
80<br />
100<br />
120<br />
140<br />
160<br />
180<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
Charge Current (mA)<br />
Time (µs)<br />
Time (s)<br />
FIGURE 2-14:<br />
Line Transient Response.<br />
FIGURE 2-17: Complete Charge Cycle<br />
(180 mAh Li-Ion Battery).<br />
Output Current (A)<br />
0.35<br />
0.04<br />
0.30<br />
0.02<br />
0.25<br />
0.00<br />
0.20<br />
-0.02<br />
0.15<br />
-0.04<br />
0.10<br />
-0.06<br />
0.05<br />
-0.08<br />
0.00<br />
C OUT = 4.7 µF, X7R Ceramic<br />
-0.10<br />
-0.05<br />
-0.12<br />
0<br />
20<br />
40<br />
60<br />
80<br />
100<br />
120<br />
140<br />
160<br />
180<br />
200<br />
Time (µs)<br />
FIGURE 2-15: Load Transient Response.<br />
Output Ripple (V)<br />
Battery Voltage (V)<br />
6.0<br />
5.0<br />
4.0<br />
3.0<br />
2.0<br />
1.0<br />
0.0<br />
0<br />
<strong>MCP73831</strong>-2AC/IOT<br />
V DD = 5.2V<br />
R PROG = 2 kΩ<br />
30<br />
60<br />
90<br />
FIGURE 2-18: Complete Charge Cycle<br />
(1000 mAh Li-Ion Battery).<br />
120<br />
Time (s)<br />
150<br />
180<br />
210<br />
240<br />
600<br />
500<br />
400<br />
300<br />
200<br />
100<br />
0<br />
Charge Current (mA)<br />
DS21984A-page 8<br />
© 2005 Microchip Technology Inc.
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