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BQ24311DSGR

Name: BQ24311DSGR
Rating: 4.7 (12 reviews)

IC BATT PROTECTION LI-ION 8WSON

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製造商。部分 #BQ24311DSGR
包 WSON-8
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規格

Package	Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus	Active
Function	Battery Protection
BatteryChemistry	Lithium Ion
FaultProtection	Over Current, Over Temperature, Over/Under Voltage
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	8-WFDFN Exposed Pad

概述

Description

The bq24311DSGR is a TI single‑cell Li‑ion battery charger with integrated power‑path management. It accepts a USB/5V input and charges one Li‑ion/Li‑polymer cell using constant‑current/constant‑voltage (CC/CV) charging, while also providing system power to the load during charging.
Key features:
- Power‑path: can power the system while charging the battery
- CC/CV charging with preconditioning for deeply discharged cells
- Safety protections: overvoltage, overcurrent/short‑circuit, reverse current protection, thermal regulation
- Battery temperature monitoring via NTC input
- Minimal external components; package‑level integration
Package: DSGR indicates TI’s 16‑pin leadless/low‑profile package variant. Use cases include portable devices and wearables requiring a compact, cost‑effective USB Li‑ion charging solution. Some variants offer optional control/interfaces (e.g., I2C) for setting current or monitoring status.

Features

Key features of TI bq24311DSGR:
- Stand-alone single-cell Li‑ion battery charger with USB input support (5 V) and power-path management.
- CC/CV charging to 4.2 V with programmable charge current via external resistor.
- Precharge/trickle charging for deeply discharged cells and automatic termination when current drops below threshold.
- Power-path architecture keeps the system powered while charging.
- Battery temperature monitoring via external NTC input with thermal protection.
- Comprehensive safety: UVLO, over-voltage, over-current, reverse-current protection, and over-temperature shutdown.
- Status and fault indication outputs (e.g., CHG/STAT) for easy system integration.
- Small DSGR package with minimal external components; easy to design in.

Package

BQ24311DSGR is in a VQFN-16 package (3.0 × 3.0 mm), RoHS-compliant.

Pinout

- Pin count: 16 pins (DSGR package, VQFN-16 style).
- Function: Single‑cell Li‑ion battery charger with power‑path management. It accepts a 5V input (USB/adaptor), provides CC/CV charging to 4.2V, supports programmable charge current, and includes basic status outputs and protection features with system-load sharing.

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational technology company that designs and manufactures semiconductors and integrated circuits (analogue, embedded processing, and related electronics).

Application

Application areas: single-cell Li‑ion/Li‑polymer battery charging for portable electronics powered from USB or 5V adapters. Suitable for: mobile phones and feature phones, digital cameras/camcorders, MP3/MP4 players, handheld gaming devices, GPS units, wearables, USB power banks, and other compact USB-charged devices.