BQ24400DR

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BQ24400DR

IC BATT CHG MULTI-CHEM 8SOIC

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規格

Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
BatteryChemistry Multi-Chemistry
ProgrammableFeatures Timer, Voltage
Voltage-Supply(Max) 6V
OperatingTemperature -20°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

概述

Description

Here’s a concise intro to TI’s BQ24400DR:
- What it is: A stand-alone, single‑cell Li‑ion/Li‑polymer battery charger IC from TI (BQ24400 family) used to charge a battery from a source like USB or a 5V adaptor.
- How it works: Provides constant-current/constant-voltage charging with a programmable charge current and a fixed termination when the battery reaches full charge.
- Key features (typical): External resistor sets charge current, safety protections (overcurrent/short-circuit/thermal/overvoltage), simple external component count, and basic charge-status signaling.
- Package note: The “DR” suffix denotes a specific TI packaging/ordering variant (e.g., tape-and-reel/revision). See the datasheet for exact packaging.
- Applications: Portable devices and accessories that require a compact Li‑ion charger (phones, wearables, handheld instruments).
For exact electrical specs (input range, recommended resistor values, termination voltage, typical currents), consult the BQ24400DR datasheet.

Features

Key features of the bq24400DR (TI Li‑ion charger):
- Standalone Li‑ion/Li‑polymer battery charger for single-cell packs
- Constant-current/constant-voltage charging with automatic recharge
- Preconditioning for deeply discharged cells
- End-of-charge termination via CV taper, -ΔV, or timer
- Battery temperature monitoring (NTC input) with thermal regulation/shutdown
- Safety protections: overcurrent, overvoltage, short-circuit, and reverse-current protection
- Programmable charging current and input current limit
- Status outputs for charge/fault indication (CHG/STAT)
- Low quiescent current in standby
- Small 8-pin DR package with minimal external components
- Suitable for USB or wall adapter power sources
Note: Refer to the TI datasheet for exact electrical specs and recommended application circuit.

Package

BQ24400DR comes in a 16‑pin WSON (VSON) package with an exposed pad.

Pinout

- Pin count: 8 pins (MSOP-8/SOIC-8 style package, “DR” is the package code variant).
- Function: Stand-alone Li‑ion battery charger/controller for a single-cell battery with USB input. Provides constant-current/constant-voltage charging, charge-current programming via ISET, temperature monitoring (NTC), enable/shutdown control, and status indicators (charging/charge complete).

Manufacturer

- Manufacturer: Texas Instruments (TI)
- About the company: TI is an American global semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing integrated circuits for automotive, industrial, consumer electronics, and other markets.

Application

BQ24400DR is a single-cell Li‑ion battery charger. Typical applications include portable consumer electronics that charge from USB or a wall adapter: mobile phones, digital cameras, MP3 players, PDAs, handheld gaming devices; wireless peripherals (headsets, dongles); portable medical devices; and other compact battery‑powered instruments and tools.

Equivalent

There isn’t an exact drop-in equivalent to BQ24400DR. For similar function, consider these substitutes:
- TI: BQ24040, BQ24075 (single‑cell Li‑ion USB chargers)
- Microchip: MCP73831/MCP73832/MCP73833
- Analog Devices: LTC4054 (1‑cell Li‑ion charger)
Note: pinout, current limit, and safety features vary; use TI cross-reference and verify specs before replacement.

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