LTC4081EDD#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger
• Characteristics: High Efficiency, Low Quiescent Current, Wide Input Voltage Range
• Package: DFN-10
• Essence: Power Management IC for Battery Charging Applications
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.95V to 18V
• Charge Current Range: Up to 950mA
• Charge Termination: Programmable
• Battery Float Voltage: Programmable
• Quiescent Current: 35µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LTC4081EDD#PBF package has a total of 10 pins:

1. VIN: Input Voltage Pin
2. GND: Ground Pin
3. PROG: Charge Current Programming Pin
4. FLT: Fault Indicator Pin
5. STAT: Status Indicator Pin
6. CE: Enable Pin
7. VBAT: Battery Voltage Sense Pin
8. ISET: Battery Float Voltage Programming Pin
9. TS: Thermal Shutdown Pin
10. VOUT: Output Voltage Pin

Functional Features

• High efficiency synchronous buck charger
• Wide input voltage range allows charging from various power sources
• Programmable charge current and termination settings
• Automatic recharge feature for maintaining battery charge
• Fault indicator pin for easy system monitoring
• Status indicator pin for charge status indication
• Enable pin for controlling the charging process
• Thermal shutdown protection for safe operation

Advantages and Disadvantages

Advantages: - High efficiency results in faster charging times - Wide input voltage range provides flexibility in power source selection - Programmable charge current and termination settings allow customization - Automatic recharge feature ensures continuous battery operation - Fault and status indicator pins aid in system monitoring

Disadvantages: - Limited to DFN-10 package, which may not be suitable for all applications - Requires external components for complete battery charging solution

Working Principles

The LTC4081EDD#PBF is a power management IC designed for battery charging applications. It operates as a high efficiency synchronous buck charger, converting the input voltage to a regulated output voltage suitable for charging batteries. The device offers programmable charge current and termination settings, allowing customization based on battery requirements. It also features an automatic recharge function that maintains battery charge when the input power source is available.

Detailed Application Field Plans

The LTC4081EDD#PBF is commonly used in various portable electronic devices, such as smartphones, tablets, and wearable devices. It is also suitable for battery-powered IoT devices, medical devices, and industrial equipment. The wide input voltage range makes it compatible with different power sources, including USB ports, wall adapters, and solar panels. The programmable charge current and termination settings enable efficient charging of different battery chemistries, such as lithium-ion, lithium-polymer, and nickel-metal hydride.

Detailed and Complete Alternative Models

1. MCP73831: Battery Charger IC with Programmable Charge Current and Termination
2. BQ24075: Single-Chip Li-Ion/Li-Pol Battery Charger with Wide Input Voltage Range
3. MAX1555: Stand-Alone NiMH/NiCd Battery Charger with Thermal Regulation

These alternative models offer similar functionality and can be considered as alternatives to the LTC4081EDD#PBF depending on specific application requirements.

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