MCP1631RD-DCPC1 Microchip Technology, MCP1631RD-DCPC1 Datasheet - Page 16

• 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

MCP1631HV Digitally Controlled Programmable Current Source Reference Design
DS51798A-page 12
2.3.1.3
The push button is used to switch the output ON or OFF (Standby). The first pressing
of the power button will turn on the board and drive the output at 10% of programmed
current (70 mA for the default firmware). The GREEN LED will flash with a 1 second
period, indicating that it is in normal operating mode.
The board is capable of a 10:1 dimming ratio. Each additional pressing of the power
button will increment the output drive current by 10% of the programmed drive current
up to the actual programmed drive current value.
To switch the output OFF, press and hold the push button for about 2 seconds until the
LED turns RED.
2.3.1.4
The MCP1631HV Digitally Programmable Current Source Reference Design has a
dual color (red/green) LED to indicate the status and faults. Table 2-1 shows the status
of the LEDs during various states of operating modes.
If a no load, overvoltage, or overtemperature fault condition occurs during operation,
the fault condition will be indicated by a flashing RED LED.
The RED LED will flash at a 1 Hz rate if an overtemperature condition has been
detected. An overtemperature condition will result in Thermal Shutdown.
The RED LED will flash at a 2 Hz rate if an overvoltage or missing load condition has
been detected. An overvoltage or missing load condition will result in an Overvoltage
Shutdown.
A fault condition must exist for 5 consecutive firmware sampling periods to be validated
as a hard fault.
TABLE 2-1:
Standby / Charge Complete State
ON (Dimming or Charging) State
Switching to Standby State
Over Temperature Fault
Over Voltage Fault
Charge Timeout Fault
Calibration Complete State
USING THE REFERENCE BOARD
STATUS AND FAULT INDICATION
STATE / FAULT
STATUS OUTPUT
GREEN ON
GREEN Flashing
RED ON after button press delay
RED Flashing (1 Hertz)
RED Flashing (2 Hertz)
RED Flashing (2 Hertz)
YELLOW (both LEDs ON)
© 2009 Microchip Technology Inc.
LED Status