LT3652EMSE#PBF

Product Overview

Category

LT3652EMSE#PBF belongs to the category of integrated circuits (ICs).

Use

The LT3652EMSE#PBF is primarily used as a battery charger IC.

Characteristics

• The IC is designed for charging single-cell lithium-ion/polymer batteries.
• It operates with an input voltage range of 4.95V to 32V.
• The charging current can be programmed up to 2A.
• It features a constant-current/constant-voltage charging algorithm.
• The IC includes various safety features such as thermal shutdown and reverse battery protection.

Package

LT3652EMSE#PBF is available in a small MSOP-12 package.

Essence

The essence of LT3652EMSE#PBF lies in its ability to efficiently charge lithium-ion/polymer batteries while ensuring safety and reliability.

Packaging/Quantity

The IC is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.95V to 32V
• Charging Current: Up to 2A (programmable)
• Charging Algorithm: Constant-Current/Constant-Voltage
• Package Type: MSOP-12

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. PROG: Charging current programming pin
4. STAT: Status indicator pin
5. ISET: Current sense resistor connection pin
6. VFB: Feedback voltage pin
7. BAT: Battery connection pin
8. TIMER: Timer capacitor connection pin
9. SS: Soft-start capacitor connection pin
10. FLT: Fault indicator pin
11. TS: Thermal shutdown pin
12. PG: Power good indicator pin

Functional Features

• Constant-current/constant-voltage charging algorithm ensures optimal battery charging.
• Programmable charging current allows flexibility in charging different battery capacities.
• Safety features such as thermal shutdown and reverse battery protection enhance reliability.
• Status indicator pin provides visual feedback on the charging process.
• Fault indicator pin alerts users in case of any charging abnormalities.

Advantages and Disadvantages

Advantages

• Efficient charging of lithium-ion/polymer batteries.
• Wide input voltage range enables compatibility with various power sources.
• Programmable charging current offers flexibility for different battery capacities.
• Integrated safety features ensure reliable and safe charging.

Disadvantages

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

Working Principles

LT3652EMSE#PBF operates based on a constant-current/constant-voltage charging algorithm. It regulates the charging current to maintain a constant value until the battery voltage reaches a predetermined threshold. Once the threshold is reached, the IC switches to constant-voltage mode, maintaining a steady voltage across the battery terminals. This ensures efficient and controlled charging while preventing overcharging or damage to the battery.

Detailed Application Field Plans

The LT3652EMSE#PBF is widely used in various portable electronic devices that utilize single-cell lithium-ion/polymer batteries. Some common application fields include:

1. Smartphones and tablets
2. Portable medical devices
3. Wearable devices
4. Portable audio players
5. GPS navigation systems

Detailed and Complete Alternative Models

1. LT3652EMSE#TRPBF: Similar to LT3652EMSE#PBF but available in tape and reel packaging.
2. LT3652IMSE#PBF: Variant designed for charging multiple cells in series.

These alternative models offer similar functionality and characteristics, providing options for different packaging requirements or charging configurations.

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