BQ24640RVAR
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Texas Instruments BQ24640RVAR

Manufacturer No:
BQ24640RVAR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC SYNC SW-MODE BAT CHRGR 16VQFN
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The BQ24640RVAR from Texas Instruments is a highly integrated, standalone synchronous switch-mode super capacitor charge controller. This device is designed to charge super capacitor packs from 2.1 V to 26 V, utilizing a constant-current and constant-voltage (CC/CV) charge profile. It features a high-efficiency 600-kHz NMOS-NMOS synchronous buck controller, achieving over 90% efficiency for up to 10-A charge current. The BQ24640RVAR is ideal for applications requiring precise charge voltage and current regulation, along with robust safety features.

Key Specifications

Parameter Specification
VCC Input Voltage Range 5 V to 28 V
Charge Voltage Regulation ±0.5%
Charge Current Regulation ±3%
Charge Current Range Up to 10 A
Switching Frequency 600 kHz
Efficiency Over 90%
Driver Dead Time 30 ns
Maximum Effective Duty Cycle 99.5%
Off-State Super Capacitor Discharge Current <15 µA
Off-State Input Quiescent Current <1.5 mA
Operating Temperature Range -40°C to 85°C
Package Type 16-VQFN (3.5x3.5 mm)

Key Features

  • High integration with internal loop compensation and digital soft start.
  • Constant-frequency synchronous PWM controller.
  • High accuracy charge current and voltage regulation.
  • Safety features including input overvoltage protection, capacitor temperature sensing, and thermal shutdown.
  • Status outputs for adapter present, charger operation status, and charge enable pin.
  • Automatic sleep mode for low power consumption.
  • Internal digital soft start and high integration.

Applications

  • Memory backup systems.
  • Industrial UPS systems and power transient buffering.
  • Bridge power to buffer the battery.

Q & A

  1. What is the primary function of the BQ24640RVAR?

    The BQ24640RVAR is a standalone synchronous switch-mode super capacitor charge controller.

  2. What is the input voltage range for the BQ24640RVAR?

    The input voltage range is from 5 V to 28 V.

  3. What is the maximum charge current supported by the BQ24640RVAR?

    The device supports up to 10 A of charge current.

  4. What safety features does the BQ24640RVAR include?

    The device includes input overvoltage protection, capacitor temperature sensing, thermal shutdown, and other safety features.

  5. How does the BQ24640RVAR manage charge status?

    The device uses status outputs for adapter present, charger operation status, and a charge enable pin to manage charge status.

  6. What is the operating temperature range of the BQ24640RVAR?

    The operating temperature range is from -40°C to 85°C.

  7. What type of package does the BQ24640RVAR come in?

    The device comes in a 16-VQFN (3.5x3.5 mm) package.

  8. How efficient is the BQ24640RVAR in charging super capacitors?

    The device achieves over 90% efficiency for up to 10 A of charge current.

  9. Does the BQ24640RVAR support automatic sleep mode?

    Yes, the device enters a low-current sleep mode for low power consumption when the input voltage falls below the output capacitor voltage.

  10. What are some common applications of the BQ24640RVAR?

    Common applications include memory backup systems, industrial UPS systems, and power transient buffering.

Product Attributes

Applications:Supercapacitor Charger
Current - Supply:1mA
Voltage - Supply:5V ~ 28V
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:16-VFQFN Exposed Pad
Supplier Device Package:16-VQFN (3.5x3.5)
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Similar Products

Part Number BQ24640RVAR BQ24640RVAT
Manufacturer Texas Instruments Texas Instruments
Product Status Active Active
Applications Supercapacitor Charger Supercapacitor Charger
Current - Supply 1mA 1mA
Voltage - Supply 5V ~ 28V 5V ~ 28V
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount
Package / Case 16-VFQFN Exposed Pad 16-VFQFN Exposed Pad
Supplier Device Package 16-VQFN (3.5x3.5) 16-VQFN (3.5x3.5)

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