MCP3421DM-BFG Microchip Technology, MCP3421DM-BFG Datasheet - Page 18

• Manufacturer Part Number: MCP3421DM-BFG
• Description: BOARD DEMO FOR MCP3421
• Manufacturer: Microchip Technology

Specifications of MCP3421DM-BFG

• Main Purpose: Power Management, Battery Gauge
• Utilized Ic / Part: MCP3421
• Processor To Be Evaluated: MCP3421
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP3421 Battery Fuel Gauge Demo Board User’s Guide
FIGURE 2-2:
Enabled. (Contact Microchip Technology Inc., if you need this feature enabled).
DS51683A-page 14
* Discharging Fuel (mAh) = Discharging Current (mAs)/3600
Fuel Remain (mAh) = Initial Battery Fuel = 170 mAh, 4.2V
MCP3421 Battery Fuel Gauge Computation Algorithm with Battery Recharge Feature
Fuel Used (mAh) =
Fuel Remain (mAh) = Fuel Remain (mAh)
Display Charging Current &
Is Battery Fully Charged ?
( for Discharging Current)
Display Fuel Remain &
Display Battery Volts and
Get ADC value from U1
Get ADC value from U5
Get ADC value from U5
Get ADC value from U1
( for Charging Current)
Battery Volts < 50% ?
( for Battery Voltage)
Discharging Current
Yes
(Battery Volts)
Battery Volts
Interrupted ?
i
Fuel Used
∑
START
=
N
+ Fuel Charged (mAh)
0
or
Discharging Fuel (mAh)
No
Draft
No
(ADC Input = Voltage after voltage divider)
Battery Volt = 2 * Acquired Volts
Yes
Recharge Battery?
No
Want
to
© 2007 Microchip Technology Inc.
Yes