LTC4098EUDC#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Battery Charger and Power Manager

Characteristics: - High Efficiency - Wide Input Voltage Range - Programmable Charge Current - Automatic Recharge - Thermal Regulation - Low Quiescent Current - Small Footprint

Package: 16-Lead QFN (Quad Flat No-Lead)

Essence: The LTC4098EUDC#PBF is a versatile battery charger and power manager IC designed for portable electronic devices. It offers high efficiency charging, thermal regulation, and low quiescent current, making it suitable for various applications.

Packaging/Quantity: The LTC4098EUDC#PBF is available in a 16-Lead QFN package. The quantity per reel is 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Charge Voltage Range: 3.6V to 4.4V
• Charge Current Range: Up to 1.2A
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 35µA (typical)
• Battery Float Voltage: 4.2V
• Maximum System Load Current: 1.2A

Pin Configuration

The LTC4098EUDC#PBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. PROG: Charge Current Programming Pin
4. STAT: Status Indicator Output
5. CE: Enable Pin
6. VOUT: Regulated Output Voltage
7. BAT: Battery Connection
8. TS: Thermal Shutdown Pin
9. ISET: Input Current Limit Programming Pin
10. ILIM: System Load Current Limit Programming Pin
11. VFB: Feedback Voltage Input
12. SDA: I2C Serial Data Input/Output
13. SCL: I2C Serial Clock Input
14. INTVCC: Internal Regulator Output
15. INTVCC2: Internal Regulator Output
16. VCC: Supply Voltage

Functional Features

1. High Efficiency Charging: The LTC4098EUDC#PBF incorporates a high-efficiency synchronous buck charger, ensuring efficient power transfer to the battery.

2. Thermal Regulation: The IC features thermal regulation to prevent overheating during charging or discharging operations, enhancing safety and reliability.

3. Programmable Charge Current: The charge current can be programmed using an external resistor, allowing flexibility in charging different battery types.

4. Automatic Recharge: The LTC4098EUDC#PBF automatically restarts charging when the battery voltage falls below a certain threshold, ensuring continuous operation.

5. Low Quiescent Current: With a low quiescent current of 35µA, the IC minimizes power consumption when not actively charging or managing power.

6. Small Footprint: The 16-Lead QFN package offers a compact size, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - High efficiency charging - Thermal regulation for safety - Programmable charge current for flexibility - Automatic recharge feature - Low quiescent current for power savings - Compact package size

Disadvantages: - Limited maximum charge current (up to 1.2A)

Working Principles

The LTC4098EUDC#PBF operates as a battery charger and power manager by utilizing a high-efficiency synchronous buck charger. It regulates the charging process based on the input voltage, charge current, and battery voltage. The IC also incorporates thermal regulation to prevent overheating.

The charge current can be programmed using an external resistor connected to the PROG pin. The IC automatically restarts charging when the battery voltage falls below a certain threshold, ensuring continuous operation.

Detailed Application Field Plans

The LTC4098EUDC#PBF is suitable for various portable electronic devices that require battery charging and power management capabilities. Some potential application fields include: - Smartphones - Tablets - Wearable devices - Portable medical devices - GPS trackers - Wireless headphones

Detailed and Complete Alternative Models

1. LTC4098EUFD#PBF: Similar to LTC4098EUDC#PBF but in a 16-Lead TSSOP package.
2. LTC4098EFE#PBF: Similar to LTC4098EUDC#PBF but in a 20-Lead TSSOP package.
3. LTC4098EDE#PBF: Similar to LTC4098EUDC#PBF but in a 12-Lead DFN package.

These alternative models offer similar functionality and characteristics, providing options for different PCB layout requirements or space constraints.