MCP1640RD-4ABC Microchip Technology, MCP1640RD-4ABC Datasheet - Page 24

• Manufacturer Part Number: MCP1640RD-4ABC
• Description: BOARD REF DES AAAA BAT BOOST
• Manufacturer: Microchip Technology
• Type: Battery Managementr

Specifications of MCP1640RD-4ABC

• Main Purpose: DC/DC, Step Up
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 130mA
• Voltage - Input: 1.5V
• Regulator Topology: Boost
• Frequency - Switching: 500kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MCP1640
• Product: Power Management Development Tools
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP1640, PIC12F
• Kit Application Type: Power Management
• Application Sub Type: Boost Converter
• Core Architecture: PIC
• For Use With/related Products: MCP1640, PIC12F617
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE C-1:
© 2010 Microchip Technology Inc.
MCP1640 Single Quadruple-A Battery Boost Converter Reference Design
Measure V_BATT
MCP1640 = OFF
V_BATT<0.8V?
ADC Setup
Q2 = OFF
Blink
Yes
Firmware Flowchart.
No
Initialize: Processor, Parameters
Yes
(BATT_Low = 0.8V), WDT,
No
Comparator, A/D
LED State?
Timer>0 ?
SLEEP ()
LED=ON
START
WDT?
&
A
No
No
Yes
No
No
Comparator Enabled
Decrement Timer
MCP1640 = OFF
MCP1640 = ON
VOUT<2.3V?
LED flashes
Delay 2 ms
Yes
Blink?
(10s)
DS51922A-page 24
B