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BQ24400 可编程的镍镉电池/镍氢电池快速充电管理设备

BQ24400 描述

The bq24400 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd) and nickel metal-hydride (NiMH) in single or multi-cell applications.

The bq24400 provides these charge termination criteria:

• Peak voltage, PVD
• Maximum temperature
• Maximum charge time

For safety, the bq24400 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, thebq24400 uses trickle-harge to condition the battery. For NiMH batteries, the bq24400 provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq24400 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries

	BQ24400	BQ24401
# Series Cells	Multiple	Multiple
Charge Current(Max)(A)	>2	>2
Charge Status Outputs	1	1
Control Topology	Switchmode	Switchmode
Switching Frequency(kHz)	500	500
Primary Charge Termination Method	PVD	dT/dt
Pin/Package	8SOIC, 8TSSOP	8SOIC, 8TSSOP
Vin(Max)(V)	7	7

BQ24400 特性

• Safe Management of Fast Charge for NiCd and NiMH Battery Packs
• High-Frequency Switching Controller for Efficient and Simple Charger Design
• Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
• Fast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge Time
• Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
• Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
• Built-in Battery Removal and Insertion Detection
• Sleep Mode for Low Power Consumption
• APPLICATIONS
  • Nickel Charger
  • High-Power, Multi-Cell Charger

BQ24400 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
BQ24400D	ACTIVE	-20 to 70	1.85 | 1ku	SOIC (D) | 8	75 | TUBE
BQ24400DG4	ACTIVE	-20 to 70	1.85 | 1ku	SOIC (D) | 8	75 | TUBE
BQ24400DR	ACTIVE	-20 to 70	1.55 | 1ku	SOIC (D) | 8	2500 | LARGE T&R
BQ24400DRG4	ACTIVE	-20 to 70	1.55 | 1ku	SOIC (D) | 8	2500 | LARGE T&R
BQ24400PW	ACTIVE	-20 to 70	1.85 | 1ku	TSSOP (PW) | 8	150 | TUBE
BQ24400PWG4	ACTIVE	-20 to 70	1.85 | 1ku	TSSOP (PW) | 8	150 | TUBE
BQ24400PWR	ACTIVE	-20 to 70	1.55 | 1ku	TSSOP (PW) | 8	2000 | LARGE T&R
BQ24400PWRG4	ACTIVE	-20 to 70	1.55 | 1ku	TSSOP (PW) | 8	2000 | LARGE T&R

BQ24400 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
BQ24400D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ24400D	BQ24400D
BQ24400DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ24400DG4	BQ24400DG4
BQ24400DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ24400DR	BQ24400DR
BQ24400DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ24400DRG4	BQ24400DRG4
BQ24400PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ24400PW	BQ24400PW
BQ24400PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ24400PWG4	BQ24400PWG4
BQ24400PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ24400PWR	BQ24400PWR
BQ24400PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ24400PWRG4	BQ24400PWRG4

BQ24400 应用技术支持与电子电路设计开发资源下载

1. BQ24400 数据资料 dataSheet 下载.PDF
2. TI 德州仪器电池管理产品选型与价格 . xls
3. 照明和显示屏电源选择指南 (PDF 1427 KB)
4. QFN Layout Guidelines (PDF 1279 KB)
5. 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
6. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)   (PDF  2206 KB)
7. PowerPAD™ Made Easy (PDF 57 KB)
8. 标准线性产品交叉参考 (Rev. D)   (PDF  1058 KB)
9. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
10. 所选封装材料的热学和电学性质 (PDF 645 KB)
11. 高速数据转换 (PDF 1967 KB)

BQ24400 相关工具

名称	型号	工具/软件类型
电池充电器的快速搜索选择工具	BATTERY_CHARGERS_SELECTION_TOOL	免费评估工具
BQ24400 评估模块	BQ24400EVM	开发电路板/EVM