MCP1631RD-DCPC1 Microchip Technology, MCP1631RD-DCPC1 Datasheet - Page 30

• 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

C.2
© 2009 Microchip Technology Inc.
SUMMARY DEVICE FIRMWARE FLOWCHART - LI-ION CHARGER
For the latest version of the MCP1631HV Digitally Controlled Programmable Current
Source Reference Design Li-Ion Charger firmware, visit our web site at
www.microchip.com.
FIGURE C-2:
Calibrate LiIon()
Yes
Charge Timer
Yes
Shutdown
No
S1 pressed
No
> 2s ?
=0?
START
Summary Li-Ion Charger Profile Flowchart.
Yes
SampleADC()
Initialize: Processor,
Parameters, Timers;
No
No
MAX = 1.0A 1 Cell
MAX = 0.5A 2 Cell
S1 pressed?
Decrement
Current Mode
Constant Voltage
(charge complete)
Current Mode
Precondition
Constant
V
Shutdown
I=200 mA
<= 70 mA?
BATT
Mode
I
BATT
END
Demo Board Firmware
No
>4.2V?
Yes
Yes
I
BATT
Yes
No
> 3.0V/Cell?
>4.4V/Cell?
V
OVP Test
BATT
V
V
BATT
BATT
<4.2V?
No
No
Yes
Yes
Shutdown
Yes
time retries
DS51798A-page 26
Fault
OVP
> 5
No