Datasheet
PL01 - 3.7v LiPo Battery Power Supply
(AN971 & PAM2305)
Front
Back
☒
CHIP
Main Category Power
Sub Category LiPo
Introduced 1 January 2017
Current version 1.0.0
Current version date 1 January 2017
Dimensions
Size 2x2U (32x32mm)
Weight 3.5 g
Height 11.3/2.6/8.6 mm
Non-
☒
BUS Connections
East USB Micro B & ☒BUS
Main Chip Set
Main Chip MCP73831/PAM2305
XinaBox Datasheet PL01 - 3.7v LiPo Battery Power Supply
Overview
This xCHIP charges a 3.7v LiPo battery via power input from a Micro USB power source. Unless
connected to this Micro USB power source, the circuit draws power from the LiPo battery and
supply the xBUS with power.
The on-board MCP73831 LiPo battery charging IC offers a simple and efficient battery charging
solution with various features, such as Auto Off, Cell Preconditioning, Cell Temperature Monitoring,
Reverse Polarity Protection, Status Indication and Under Voltage Protection/Brown-Out. It is
capable of charging the battery at a rate up to a maximum of 500 mA.
The equipped PAM2305 is a step-down current-mode, DC-DC converter. At heavy load, the
constant frequency PWM control performs with excellent stability and transient response. To
ensure the longest battery life in portable applications, the PAM2305 provides a power-saving
Pulse Skipping Modulation (PSM) mode to reduce quiescent current under light load operation to
save power.
Product Highlights
1 A Continuous Output Current
Micro USB Charging
LED Charging Status Indicator
500 mA Battery Charging Capacity
Supports Various 3.7V LiPo Batteries via 2.54 mm Pitch Solder Points
Charging Auto Off
Cell Preconditioning
Reverse Polarity Protection
Under Voltage Protection, Brown-Out
Specifications
MCP73831
500 mA Continuous Battery Charging Current
Auto Off
Cell Preconditioning
Reverse Polarity Protection
Status Indication
Under Voltage Protection, Brown-Out
PAM2305
Efficiency up to 96%
Only 40µA(typ) Quiescent Current
Output Current: Up to 1A
Internal Synchronous Rectifier
1.5MHz Switching Frequency
Soft Start
Under-Voltage Lockout
Short Circuit Protection
Thermal Shutdown