BQ29312APW

Name: BQ29312APW
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

BQ29312APW provides protection for two, three, and four cell lithium or lithium-polymer batteries

7,408 Effective Inventory

BQ29312APW

Effective Inventory7,408

BQ29312APW provides protection for two, three, and four cell lithium or lithium-polymer batteries

Manufacturer Part # : BQ29312APW
Package/Case: TSSOP (PW)-24
Brand: Texas Instruments
Product Categories : Battery Management
Series : BQ29312

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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

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About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

Confirm the return or exchange with our staff.

Maintain the goods in their original condition as received.

Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]

About packaging

Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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BQ29312APW DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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BQ29312APW Details

The BQ29312APW is a lithium-ion battery protection IC from Texas Instruments, designed for reliable operation in various applications such as power tools, cordless phones, and digital cameras. This device helps protect the battery from overcharging, overdischarging, and short circuits, ensuring safe and reliable operation of the devices.

Pinout

VCC: Positive Power Supply (5.0V)
GND: Ground
IN+: Input Voltage (2.7V to 4.2V)
IN-: Input Voltage (2.7V to 4.2V)
OUT+: Output Voltage (2.7V to 4.2V)
OUT-: Output Voltage (2.7V to 4.2V)
EN: Enable Pin (Active High)

Key Features

Lithium-ion battery protection IC
Overcharge and overdischarge protection
Short-circuit protection
Low quiescent current (IQ) for extended battery life
Wide input voltage range (2.7V to 4.2V)

Applications

Power tools and equipment
Cordless phones and devices
Digital cameras and other portable electronics
Battery-powered appliances and systems

Where to Use

The BQ29312APW is suitable for applications that require reliable battery protection, especially in environments where overcharging, overdischarging, or short-circuiting may occur. This device is ideal for systems where low power consumption and extended battery life are important.

How to Use

To use the BQ29312APW, connect the input voltage (IN+) and input voltage (IN-) pins to the battery or power source. Connect the output voltage (OUT+) and output voltage (OUT-) pins to the load or device being powered. Enable the IC by pulling the EN pin high. Ensure proper power supply connections to VCC and GND.

Application Circuit

The application circuit diagram for the BQ29312APW illustrates how to connect the IC to a battery-powered load or device. It includes connections for input voltage, output voltage, enable pin, and power supply lines, ensuring proper operation and reliable battery protection.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

BQ29310APW: A similar lithium-ion battery protection IC from Texas Instruments with comparable features and performance.
MAX1555: An alternative lithium-ion battery protection IC from Maxim Integrated offering equivalent functionality.

Complementary

The BQ29312APW can be complemented by the BQ29314APW, which offers additional features such as higher current handling and enhanced ESD protection, suitable for more demanding battery-powered applications.

When selecting complementary ICs, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the maximum input voltage range of the BQ29312APW?

A: The BQ29312APW has a wide input voltage range of 2.7V to 4.2V, making it suitable for various battery-powered applications.

Q: Can the BQ29312APW be used in automotive systems?

A: Yes, the BQ29312APW is suitable for automotive systems where reliable battery protection and low power consumption are important. However, ensure that the IC meets the specific requirements of your application.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Number of series cells (min)	2	Vin (max) (V)	25
Features	Cell balancing, High-side driver, I2C support, LDO output, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Separate MCU requirement, Short-current detection	Device type	Protector
Number of series cells (max)	4	Operating temperature range (°C)	-40 to 85
Rating	Catalog	Communication interface	I2C
Operating current (typ) (µA)	60

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification BQ29312APW PDF Download

FAQs

What is BQ29312APW?

The BQ29312APW is a precision voltage protection and monitoring integrated circuit (IC) designed by Texas Instruments. It is commonly used in battery management systems to protect and monitor the voltage of individual battery cells in series.

How Does BQ29312APW Work?

The BQ29312APW works by monitoring the voltage of each battery cell and providing overvoltage and undervoltage protection. It communicates with a host microcontroller to report the battery status and take corrective actions when necessary. The integrated circuit also features balancing functionality to ensure uniform charging and discharging of the battery cells.

How Many Pins does BQ29312APW have and What are the Functions of the Pinout Configuration?

The BQ29312APW is housed in a 20-pin TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:

VCC: Positive power supply pin.
VC: Common voltage supply pin.
SRP, SRN: Voltage protection reference pins for overvoltage and undervoltage, respectively.
SEL: Status and control pin.
BAT1, BAT2, BAT3, BAT4: Battery cell monitoring pins.
VC1, VC2, VC3, VC4: Voltage sense and balancing control pins for individual battery cells.
C1, C2, C3, C4: Capacitor connections for balancing control.
CB1, CB2, CB3, CB4: Capacitor connections for individual battery cell monitoring.

What are the Pros and Cons of BQ29312APW?

Pros:

Precision Protection: Provides accurate overvoltage and undervoltage protection for battery cells.
Integrated Balancing: Includes balancing functionality to ensure uniform cell charging and discharging.
High Integration: Combines voltage monitoring, protection, and balancing in a single IC, reducing external component count.
Communication Interface: Interfaces with a microcontroller for status reporting and control.
Space Efficiency: The 20-pin TSSOP package is space-efficient, suitable for compact designs.

Cons:

Complexity: Requires understanding of battery management system design and control algorithm implementation.
External Components: May require external MOSFETs and passive components for balancing and protection.

Are There Any Equivalents/Alternatives to BQ29312APW for Recommendation?

The LTC6803 from Analog Devices offers similar battery monitoring and balancing functionality.
Alternatives to the BQ29312APW include the MAX11080 from Maxim Integrated and the ISL94203 from Renesas Electronics.