LTC4061EDD-4.4#PBF

Product Overview

Category

The LTC4061EDD-4.4#PBF belongs to the category of battery charger ICs (Integrated Circuits).

Use

This product is primarily used for charging single-cell lithium-ion/polymer batteries.

Characteristics

• Input Voltage Range: 4.95V to 6.5V
• Charge Current: Up to 950mA
• Programmable Charge Current Limit
• Automatic Recharge
• Thermal Regulation
• Battery Temperature Monitor
• Undervoltage Lockout
• Reverse Battery Protection
• Low Quiescent Current

Package

The LTC4061EDD-4.4#PBF is available in a 10-lead DFN (Dual Flat No-Lead) package.

Essence

The essence of the LTC4061EDD-4.4#PBF is its ability to efficiently charge single-cell lithium-ion/polymer batteries with various safety features and programmable options.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.95V to 6.5V
• Charge Voltage: 4.4V
• Charge Current: Up to 950mA
• Preconditioning Current: 10% of Programmed Charge Current
• Charge Termination: C/10
• Charge Accuracy: ±0.5%
• Operating Temperature Range: -40°C to 85°C
• Shutdown Current: <1µA

Detailed Pin Configuration

The LTC4061EDD-4.4#PBF has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground reference
3. PROG - Charge current programming pin
4. STAT - Charge status output
5. TS - Battery temperature sense input
6. BAT - Battery connection
7. CE - Charger enable control
8. VFB - Feedback voltage input
9. ISET - Current limit programming pin
10. VIN - Input supply voltage

Functional Features

• Programmable charge current limit allows flexibility in battery charging.
• Automatic recharge feature enables the charger to restart charging if the battery voltage drops below a certain threshold.
• Thermal regulation prevents excessive heat generation during charging.
• Battery temperature monitor ensures safe charging by monitoring the battery temperature.
• Undervoltage lockout protects the battery from being charged when the input voltage is too low.
• Reverse battery protection prevents damage to the charger and battery in case of reverse battery connection.
• Low quiescent current minimizes power consumption when the charger is not actively charging.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Programmable charge current limit provides flexibility for different battery capacities.
• Automatic recharge feature ensures continuous charging even after a temporary drop in battery voltage.
• Comprehensive safety features protect the battery and charger from potential damage.
• Low quiescent current reduces power consumption during idle periods.

Disadvantages

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

Working Principles

The LTC4061EDD-4.4#PBF operates as a constant-current/constant-voltage charger for single-cell lithium-ion/polymer batteries. It uses a programmable charge current limit to regulate the charging process. The charger monitors the battery voltage, temperature, and charging current to ensure safe and efficient charging. It terminates the charging process when the battery reaches its full capacity.

Detailed Application Field Plans

The LTC4061EDD-4.4#PBF is commonly used in portable electronic devices, such as smartphones, tablets, and wearable devices. It can also be found in battery-powered medical devices, industrial equipment, and other applications that require single-cell lithium-ion/polymer battery charging.

Detailed and Complete Alternative Models

• LTC4061EDD-4.2#PBF
• LTC4061EDD-4.3#PBF
• LTC4061EDD-4.5#PBF
• LTC4061EDD-4.6#PBF

These alternative models offer different charge voltages to accommodate various battery specifications while maintaining similar functionality to the LTC4061EDD-4.4#PBF.

In conclusion, the LTC4061EDD-4.4#PBF is a versatile battery charger IC designed for single-cell lithium-ion/polymer batteries. With its programmable charge current limit, safety features, and wide input voltage range, it offers flexibility and reliability in charging applications. Its compact package and comprehensive specifications make it suitable for a wide range of portable electronic devices and other battery-powered applications.