LTC4101EG#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger Controller

Characteristics: - High Efficiency - Wide Input Voltage Range - Programmable Charge Current - Overvoltage Protection - Temperature Monitoring - Fault Detection and Reporting

Package: 20-Lead SSOP (Shrink Small Outline Package)

Essence: The LTC4101EG#PBF is a battery charger controller IC designed for high-efficiency charging of single-cell lithium-ion/polymer batteries. It provides a complete charging solution with programmable charge current, overvoltage protection, temperature monitoring, and fault detection capabilities.

Packaging/Quantity: The LTC4101EG#PBF is available in a 20-Lead SSOP package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4V to 28V
• Charge Voltage Range: 3.5V to 4.2V
• Charge Current Range: 50mA to 1A
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4101EG#PBF has the following pin configuration:

1. VCC - Power Supply Input
2. GND - Ground
3. PROG - Charge Current Programming Pin
4. STAT - Status Output Pin
5. FLT - Fault Output Pin
6. TS - Temperature Sense Input
7. BAT - Battery Connection
8. ISET - Current Limit Programming Pin
9. ILIM - Current Limit Sense Input
10. EN - Enable Pin
11. SCL - I2C Serial Clock Input
12. SDA - I2C Serial Data Input/Output
13. INT - Interrupt Output Pin
14. NC - No Connect
15. NC - No Connect
16. NC - No Connect
17. NC - No Connect
18. NC - No Connect
19. NC - No Connect
20. NC - No Connect

Functional Features

1. Programmable Charge Current: The PROG and ISET pins allow the user to set the desired charge current for the battery.
2. Overvoltage Protection: The LTC4101EG#PBF monitors the battery voltage and automatically terminates the charging process when the battery reaches the programmed charge voltage.
3. Temperature Monitoring: The TS pin allows the IC to monitor the battery temperature, preventing charging if the temperature exceeds a safe range.
4. Fault Detection and Reporting: The FLT pin provides an output signal indicating various fault conditions such as overvoltage, undervoltage, or thermal shutdown.

Advantages and Disadvantages

Advantages: - High efficiency charging - Wide input voltage range - Programmable charge current - Comprehensive fault detection and reporting

Disadvantages: - Limited to single-cell lithium-ion/polymer batteries - Requires external components for complete charging circuit

Working Principles

The LTC4101EG#PBF operates by regulating the charge current and monitoring the battery voltage and temperature. It uses a feedback control loop to adjust the charge current based on the battery's state of charge. The IC also incorporates safety features such as overvoltage protection and temperature monitoring to ensure safe and efficient charging.

Detailed Application Field Plans

The LTC4101EG#PBF is commonly used in portable electronic devices, such as smartphones, tablets, and wearable devices, where single-cell lithium-ion/polymer batteries are used. It can be integrated into the charging circuitry of these devices to provide efficient and reliable charging capabilities.

Detailed and Complete Alternative Models

Some alternative models to the LTC4101EG#PBF include: - LTC4100EG#PBF - LTC4102EG#PBF - LTC4103EG#PBF - LTC4104EG#PBF

These alternative models offer similar functionality and features, but may have different specifications or pin configurations. It is important to refer to the datasheets of these alternative models for detailed information.

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