MCP73855T-I/MF

Product Overview

• Category: Battery Charger IC
• Use: Charging Lithium-ion (Li-Ion) and Lithium Polymer (Li-Po) batteries
• Characteristics:
  • Highly integrated single-cell Li-Ion/Li-Po battery charger
  • Supports USB input voltage range of 4.1V to 6.0V
  • Provides up to 1.5A charge current
  • Automatic power source selection between USB and AC adapter
  • Programmable charge current via external resistor
  • Integrated pass transistor and current sense for simplified design
  • Safety features include thermal regulation, charge termination, and reverse battery protection
• Package: 10-Lead DFN (3x3mm)
• Essence: Efficient and compact battery charging solution
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 4.1V to 6.0V
• Charge Current: Up to 1.5A
• Operating Temperature Range: -40°C to +85°C
• Charge Termination Options: C/10 or Timer
• Reverse Battery Protection: Yes
• Thermal Regulation: Yes
• Battery Type: Lithium-ion (Li-Ion) and Lithium Polymer (Li-Po)
• Package Type: 10-Lead DFN (3x3mm)

Detailed Pin Configuration

The MCP73855T-I/MF has the following pin configuration:

1. VBAT: Battery voltage input
2. PROG: Charge current programming pin
3. STAT: Status output pin
4. PG: Power good output pin
5. CE: Charge enable input pin
6. TS: Thermal sense input pin
7. GND: Ground
8. AC/USB: AC adapter or USB input voltage selection pin
9. VSS: Ground
10. VDD: Supply voltage input

Functional Features

• Highly integrated charger IC for single-cell Li-Ion/Li-Po batteries
• Automatic power source selection between USB and AC adapter
• Programmable charge current for flexibility
• Integrated pass transistor and current sense for simplified design
• Safety features such as thermal regulation, charge termination, and reverse battery protection

Advantages and Disadvantages

Advantages: - Compact and efficient charging solution - Supports a wide range of input voltages - Programmable charge current allows flexibility in design - Integrated safety features ensure reliable charging

Disadvantages: - Limited to single-cell Li-Ion/Li-Po batteries - Not suitable for multi-cell battery charging applications

Working Principles

The MCP73855T-I/MF is a highly integrated battery charger IC designed for single-cell Li-Ion/Li-Po batteries. It supports both USB and AC adapter inputs and automatically selects the appropriate power source. The charge current can be programmed using an external resistor, providing flexibility in design.

The IC includes an integrated pass transistor and current sense circuitry, simplifying the overall design. Safety features such as thermal regulation, charge termination, and reverse battery protection ensure safe and reliable charging.

Detailed Application Field Plans

The MCP73855T-I/MF is widely used in various portable electronic devices that require single-cell Li-Ion/Li-Po battery charging. Some common application fields include:

1. Smartphones and tablets
2. Portable media players
3. Bluetooth headsets
4. Wearable devices
5. GPS navigation systems
6. Portable gaming consoles

Detailed and Complete Alternative Models

1. MCP73831T-2ACI/OT: Similar functionality with a lower charge current capability (up to 500mA).
2. MCP73871-2CCI/ML: Supports dual-cell Li-Ion/Li-Po battery charging with a charge current of up to 1A.
3. MCP73861-1CCI/ML: Single-cell charger with higher charge current capability (up to 2A).

These alternative models provide options for different charging requirements and battery configurations.

Word count: 496 words