BQ24018DRCR

Product Overview

Category

BQ24018DRCR belongs to the category of battery charger ICs (Integrated Circuits).

Use

This IC is primarily used for charging single-cell lithium-ion or lithium-polymer batteries.

Characteristics

• The BQ24018DRCR is a highly integrated and compact charger IC.
• It offers a complete power management solution for portable devices.
• The IC provides accurate charging control, thermal regulation, and various safety features.
• It supports USB input voltage range from 4.35V to 6.45V.
• The charge current can be programmed up to 1.5A.
• It includes an integrated power FET and reverse-blocking protection.
• The IC also features a programmable charge termination timer.

Package and Quantity

The BQ24018DRCR comes in a small 10-pin VSON package. It is available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 4.35V - 6.45V
• Charge Current Range: Up to 1.5A
• Programmable Charge Termination Timer: Yes
• Battery Regulation Voltage: 4.2V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 10-pin VSON

Pin Configuration

The BQ24018DRCR has the following pin configuration:

1. EN/STAT: Enable/Input Status
2. PG: Power Good Output
3. TS: Thermistor Input
4. PROG: Charge Current Programming
5. ISET: Input Current Limit Programming
6. GND: Ground
7. BAT: Battery Connection
8. SYS: System Connection
9. VBUS: USB Input Supply
10. STAT: Output Status

Functional Features

• Integrated power FET for charging control.
• Reverse-blocking protection to prevent battery discharge.
• Thermal regulation to protect the IC from overheating.
• Programmable charge termination timer for precise charging control.
• Power good output signal to indicate successful charging.
• Input current limit programming for customized charging profiles.

Advantages and Disadvantages

Advantages

• Highly integrated solution for battery charging applications.
• Compact size and small footprint.
• Accurate charging control and thermal regulation.
• Supports a wide range of input voltages.
• Programmable charge termination timer for precise control.

Disadvantages

• Limited to single-cell lithium-ion or lithium-polymer batteries.
• Not suitable for multi-cell battery charging applications.

Working Principles

The BQ24018DRCR operates by regulating the charging current and voltage to ensure safe and efficient charging of single-cell lithium-ion or lithium-polymer batteries. It utilizes an integrated power FET to control the charging process and provides reverse-blocking protection to prevent battery discharge. The IC also incorporates thermal regulation to protect itself from overheating during operation.

Application Field Plans

The BQ24018DRCR is widely used in various portable devices that require single-cell lithium-ion or lithium-polymer battery charging. Some common application fields include:

1. Smartphones and tablets
2. Portable media players
3. Bluetooth headsets
4. Wearable devices
5. Portable gaming consoles

Alternative Models

Here are some alternative models that offer similar functionality to the BQ24018DRCR:

1. MCP73831: Microchip Technology
2. MAX1555: Maxim Integrated
3. LTC4054: Linear Technology
4. TP4056: NanJing Top Power ASIC Corp.

These alternative models can be considered based on specific requirements and design constraints.

In conclusion, the BQ24018DRCR is a highly integrated battery charger IC designed for single-cell lithium-ion or lithium-polymer batteries. It offers accurate charging control, thermal regulation, and various safety features. With its compact size and wide input voltage range, it provides an efficient power management solution for portable devices.

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