MCP1631RD-DCPC1 Microchip Technology, MCP1631RD-DCPC1 Datasheet - Page 31

• 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.3
© 2009 Microchip Technology Inc.
SUMMARY DEVICE FIRMWARE FLOWCHART - NIMH/NICD CHARGER
For the latest version of the MCP1631HV Digitally Controlled Programmable Current
Source Reference Design NiMH/NiCd Charger firmware, visit our web site at
www.microchip.com.
FIGURE C-3:
No
No
Shutdown
time retries
Yes
time retries
Cell Temp
Fault
OVP
> 40°C?
> 5
OTP
> 5
No
Yes
?
Yes
Summary NiMH/NiCd Charger Profile Flowchart.
No
OVP?
Fault
Yes
Yes
Initialize: Processor,
Parameters, Timers;
No
No
SampleADC()
ChargeTimer=0?
Fast charge Mode
I
CHARGE
TopOff Charge Mode
S1 pressed?
> 1.8V / Cell?
START
Charge Timer = 1h
temp > 40
> 0.9V / Cell?
ChargeTimer=0?
dV/dt<-10mV
Is V
Is V
Demo Board Firmware
dT/dt>1.5C
Yes
Shutdown
Cell
END
Yes
BATT
= 700 mA
BATT
No
No
Yes
No
o
Yes
C?
No
Yes
No
Yes
Current Mode
Precondition
Shutdown
time retries
Yes
DS51798A-page 27
OTP
Fault
> 5?
No