MCP1631RD-DCPC1 Microchip Technology, MCP1631RD-DCPC1 Datasheet - Page 13

• Manufacturer Part Number: MCP1631RD-DCPC1
• Description: REF DES BATT CHARG OR LED DRIVER
• Manufacturer: Microchip Technology

Specifications of MCP1631RD-DCPC1

• Current - Output / Channel: 700mA
• Outputs And Type: 1, Non-Isolated
• Features: Firmware for Li-Ion, NiMH, and NiCd Battery Charger
• Voltage - Input: 3.5 ~ 16 V
• Utilized Ic / Part: MCP1631HV, PIC16F616
• Core Chip: MCP1631HV, PIC16F616
• Topology: Parallel, Series
• Output Current: 1A
• No. Of Outputs: 1
• Input Voltage: 3.5V To 16V
• Dimming Control Type: Analog
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2009 Microchip Technology Inc.
The MCP1631HV Digitally Programmable Current Source Reference Design firmware
may be re-programmed with the charger profile for Li-Ion or NiMH/NiCd battery packs.
Firmware profile pre-proccessor definitions are :
• #define LION_SUPPORT
• #define NIMH_SUPPORT DISABLED
• #define LED_DRIVER_SUPPORT ENABLED
Setting one of the profiles to ENABLED and the other two to DISABLED will select the
ENABLED profile at compile time. The re-compiled code will then perform the functions
required for the selected profile.
Figure 2-2 shows the charge profiles for a single-cell 1000 mAh Li-Ion battery pack.
Figure 2-3 shows the charge profile for a three-cell 600 mAh NiMH battery pack with
Temperature Shutdown disabled. Disabling the Temperature Shutdown is only done
one time in the lab to profile the battery pack and chemistry. The Temperature
Shutdown should always be enabled in production firmware to prevent the battery pack
from overheating during a charge cycle.
FIGURE 2-2:
5.0
4.0
3.0
2.0
1.0
0.0
0
Li-Ion Charge Profile for 1000 mAh Cell.
50
DISABLED
Time (min)
Installation and Operation
V
I
BAT
OUT
100
150
200
DS51798A-page 9
2.0
1.6
1.2
0.8
0.4
0.0