LTC4085EDE-1#PBF

Product Overview

Category

The LTC4085EDE-1#PBF belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is primarily used for managing and charging single-cell lithium-ion/polymer batteries.

Characteristics

• The LTC4085EDE-1#PBF offers a compact and efficient solution for battery charging applications.
• It provides a wide input voltage range, making it suitable for various power sources.
• This PMIC incorporates multiple protection features to ensure safe and reliable battery charging.
• It supports both linear and pulse charging modes, allowing flexibility in charging strategies.
• The device includes an integrated low-dropout linear regulator for powering external circuitry.

Package

LTC4085EDE-1#PBF is available in a 12-pin DFN (Dual Flat No-Lead) package.

Essence

The essence of LTC4085EDE-1#PBF lies in its ability to efficiently manage and charge single-cell lithium-ion/polymer batteries while providing necessary protection features.

Packaging/Quantity

This PMIC is typically sold in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 2.7V to 6V
• Charge Current Range: Up to 950mA
• Programmable Charge Termination Current: 0.1x to 0.5x Charge Current
• Battery Float Voltage: 4.2V
• Low Dropout Linear Regulator Output Voltage: 3.3V
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Charge termination current programming pin
4. STAT: Status output pin
5. CE: Charge enable pin
6. TS: Temperature sense input pin
7. BAT: Battery voltage output pin
8. VOUT: Low dropout linear regulator output pin
9. PGND: Power ground pin
10. ISET: Charge current programming pin
11. SCL: I2C serial clock input pin
12. SDA: I2C serial data input/output pin

Functional Features

• Programmable charge termination current allows flexibility in battery charging strategies.
• Integrated low-dropout linear regulator provides a stable output voltage for external circuitry.
• Wide input voltage range enables compatibility with various power sources.
• Multiple protection features, including overvoltage and overcurrent protection, ensure safe battery charging.
• I2C interface allows for easy configuration and monitoring of the PMIC.

Advantages and Disadvantages

Advantages

• Efficient and compact solution for single-cell lithium-ion/polymer battery charging.
• Wide input voltage range enhances versatility.
• Multiple protection features ensure safe and reliable charging.
• Programmable charge termination current offers flexibility in charging strategies.
• Integrated low-dropout linear regulator simplifies power supply design.

Disadvantages

• Limited to single-cell lithium-ion/polymer battery charging applications.
• Requires additional external components for complete battery charging system implementation.

Working Principles

The LTC4085EDE-1#PBF operates by regulating the charging current and voltage to the connected single-cell lithium-ion/polymer battery. It utilizes a programmable charge termination current to determine when the battery is fully charged. The integrated low-dropout linear regulator provides a stable output voltage for powering external circuitry. The PMIC incorporates various protection features to prevent overvoltage, overcurrent, and overheating conditions, ensuring safe and reliable battery charging.

Detailed Application Field Plans

The LTC4085EDE-1#PBF finds applications in various portable electronic devices, such as smartphones, tablets, digital cameras, and wearable devices. It is also suitable for battery-powered IoT devices, medical devices, and handheld instruments.

Detailed and Complete Alternative Models

• LTC4085EDE
• LTC4085IDE
• LTC4085XEDD
• LTC4085XIDD

These alternative models offer similar functionality and features to the LTC4085EDE-1#PBF, providing options for different package types or pin configurations.

In conclusion, the LTC4085EDE-1#PBF is a power management integrated circuit designed for efficient and safe charging of single-cell lithium-ion/polymer batteries. With its compact size, wide input voltage range, and multiple protection features, it offers a reliable solution for various portable electronic devices and battery-powered applications.