LT3652IDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger

Characteristics: - High efficiency - Wide input voltage range - Programmable charging current - Thermal shutdown protection - Reverse battery protection

Package: 12-Lead, 3mm x 3mm DFN

Essence: The LT3652IDD#TRPBF is a high-efficiency battery charger IC designed for use in various portable devices.

Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Input Voltage Range: 4.95V to 32V
• Charging Current Range: Up to 2A
• Float Voltage: Programmable from 4.1V to 14.4V
• Charge Termination: Programmable C/10 or timer
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LT3652IDD#TRPBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Programming pin for setting charging current and float voltage
4. STAT: Status output pin
5. ISET: Current sense input pin
6. TS: Thermal shutdown pin
7. BAT: Battery connection pin
8. TIMER: Timer programming pin
9. FREQ: Frequency programming pin
10. SS: Soft-start pin
11. FB: Feedback pin
12. VOUT: Output voltage pin

Functional Features

• High efficiency synchronous buck charger
• Constant-current/constant-voltage charging algorithm
• Programmable charging current and float voltage
• Automatic recharge feature
• Thermal shutdown protection
• Reverse battery protection
• Fault status indication through the STAT pin

Advantages and Disadvantages

Advantages: - High efficiency charging - Wide input voltage range allows for versatile applications - Programmable charging current and float voltage provide flexibility - Automatic recharge feature ensures continuous operation - Thermal shutdown and reverse battery protection enhance safety

Disadvantages: - Limited maximum charging current of 2A - Requires external components for complete circuit implementation

Working Principles

The LT3652IDD#TRPBF operates as a synchronous buck charger, converting the input voltage to a regulated output voltage suitable for charging batteries. It uses a constant-current/constant-voltage charging algorithm to ensure efficient and safe charging. The charging current and float voltage can be programmed using the PROG pin.

The IC incorporates thermal shutdown protection to prevent overheating and damage. It also features reverse battery protection to safeguard against incorrect battery connections. The STAT pin provides fault status indication, allowing for easy monitoring of the charging process.

Detailed Application Field Plans

The LT3652IDD#TRPBF is widely used in various portable devices that require battery charging capabilities. Some common application fields include:

1. Mobile phones and smartphones
2. Tablets and laptops
3. Portable media players
4. Digital cameras
5. Portable gaming devices
6. Wireless communication devices

Detailed and Complete Alternative Models

1. LT3652IMSE#PBF: Similar specifications and features, available in MSOP-12 package.
2. LTC4000-1: Battery charger IC with higher charging current capability, available in SSOP-16 package.
3. MAX8903CETI+: Integrated battery charger IC with additional power management features, available in QFN-28 package.
4. BQ24075RGTT: Battery charger IC with similar specifications, available in QFN-16 package.

These alternative models offer similar functionality and can be considered as alternatives to the LT3652IDD#TRPBF depending on specific application requirements.

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