MCP7383XEV-DIBC Microchip Technology, MCP7383XEV-DIBC Datasheet - Page 9

• Manufacturer Part Number: MCP7383XEV-DIBC
• Description: BOARD EVAL FOR MCP73837/8
• Manufacturer: Microchip Technology
• Type: Battery Managementr

Specifications of MCP7383XEV-DIBC

• Main Purpose: Power Management, Battery Charger
• Utilized Ic / Part: MCP73837, MCP73838
• Product: Power Management Modules
• For Use With/related Products: MCP73837, MCP73838
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1.1
© 2007 Microchip Technology Inc.
INTRODUCTION
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board demonstrates
the features and abilities of Microchip’s MCP73837 and MCP73838 Single-Chip Linear
Li-Ion Battery Charger with Autonomous AC Adapter or USB-Port Power Source
Selection. The MCP73837 and MCP73838 are stand-alone highly integrated linear
battery charger management controllers which employ a constant current / constant
voltage (CCCV) charge algorithm with selectable preconditioning and charge
termination ratio.
The MCP73837 and MCP73838 automatically select the AC-Adapter or USB-Port as
the power source for the system. For an AC-Adapter powered system, an external
resistor (R
mA. With an USB-port providing power to the system, the MCP73837/8 specifically
adheres to the current limits governed by the USB specification. The host microcontrol-
ler can select from two preset charge current rates of typical 90 mA (low) or 450 mA
(High) and will not exceed 100 mA (Low) or 500 mA (high) maximum charge current.
As for USB regulation, a device may draw either low-power at one unit load or
high-power at 5 unit loads. A unit load is defined to be 100 mA. The drawn current per
unit load is an absolute maximum value, not an average over time.
This chapter covers the following topics:
• What is the MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board?
• What the MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board Kit
FIGURE 1-1:
V
V
includes.
IN_AC or USB
IN_AC or USB
Chapter 1. Product Overview
V
IN_AC Adapter
V
PROG
IN_USB Port
) sets the magnitude of the charge current up to a maximum of 1000
4.7 µF
4.7 µF
MCP73837/8 AC/USB EVALUATION
MCP73837 Typical Application.
4
1
2
3
5
V
V
STAT1
STAT2
V
AC
USB
SS
BOARD USER’S GUIDE
THERM
PROG2
PROG1
V
BAT
PG
10
9
8
7
6
Thermistor
Low
4.7 µF
Hi
V
DS51684A-page 5
IN_AC or USB
Single
Li-Ion
Cell