BQ2000T 具有 dT/dt 终端的多化合物开关模式充电管理 IC

BQ2000T 描述

The bq2000T is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd), nickel metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications. The bq2000T chooses the proper battery chemistry (either nickel or lithium) and proceeds with the optimal charging and termination algorithms. This process eliminates undesirable, undercharged, or overcharged conditions, and allows accurate and safe termination of fast charge.

Depending on the chemistry, the bq2000T provides a number of charge termination criteria:

• Rate of temperature rise (ΔT/Δt) (for NiCd and NiMH)
• Minimum charge current (for Li-Ion)
• Maximum temperature
• Maximum charge time

For safety, the bq2000T inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq2000T uses trickle-charge to condition the battery. For NiMH batteries, the bq2000T provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq2000T to be the basis for a complete, high-efficiency battery charger circuit for both nickel-based and lithium-based chemistries

	BQ2000T
# Series Cells	Multiple
Charge Current(Max)(A)	>2
Charge Status Outputs	1
Control Topology	Switchmode
Switching Frequency(kHz)	500
Primary Charge Termination Method	dT/dt, Minimum Current
Pin/Package	8PDIP, 8SOIC, 8TSSOP
Vin(Max)(V)	7

BQ2000T 特性

• Safe Management of Fast Charge for NiCd, NiMH, or Li-Ion 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 for Nickel Chemistries, Minimum Current for Li-Ion Chemistries, 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
  • Multi-Chemistry Charger
  • Nickel Charger
  • High-Power, Multi-Cell Charger

BQ2000T 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
BQ2000TPN-B5	ACTIVE	-20 to 70	1.50 | 1ku	PDIP (N) | 8	50 | TUBE
BQ2000TPW	ACTIVE	-20 to 70	1.80 | 1ku	TSSOP (PW) | 8	150 | TUBE
BQ2000TPWG4	ACTIVE	-20 to 70	1.80 | 1ku	TSSOP (PW) | 8	150 | TUBE
BQ2000TPWR	ACTIVE	-20 to 70	1.50 | 1ku	TSSOP (PW) | 8	2000 | LARGE T&R
BQ2000TPWRG4	ACTIVE	-20 to 70	1.50 | 1ku	TSSOP (PW) | 8	2000 | LARGE T&R
BQ2000TSN-B5	ACTIVE	-20 to 70	1.80 | 1ku	SOIC (D) | 8	75 | TUBE
BQ2000TSN-B5G4	ACTIVE	-20 to 70	1.80 | 1ku	SOIC (D) | 8	75 | TUBE
BQ2000TSN-B5TR	ACTIVE	-20 to 70	1.50 | 1ku	SOIC (D) | 8	2500 | LARGE T&R
BQ2000TSN-B5TRG4	ACTIVE	-20 to 70	1.50 | 1ku	SOIC (D) | 8	2500 | LARGE T&R

BQ2000T 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
BQ2000TPN-B5	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	BQ2000TPN-B5	BQ2000TPN-B5
BQ2000TPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ2000TPW	BQ2000TPW
BQ2000TPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ2000TPWG4	BQ2000TPWG4
BQ2000TPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ2000TPWR	BQ2000TPWR
BQ2000TPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BQ2000TPWRG4	BQ2000TPWRG4
BQ2000TSN-B5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2000TSN-B5	BQ2000TSN-B5
BQ2000TSN-B5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2000TSN-B5G4	BQ2000TSN-B5G4
BQ2000TSN-B5TR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2000TSN-B5TR	BQ2000TSN-B5TR
BQ2000TSN-B5TRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2000TSN-B5TRG4	BQ2000TSN-B5TRG4

BQ2000T 应用技术支持与电子电路设计开发资源下载

1. BQ2000T 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. PowerPADTM 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)

BQ2000T 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
温度传感设计软件	TEMPSENSE-SW	分析软件
用于多化合物、开关模式的 BQ2000T 评估模块	DV2000TS1	开发电路板/EVM
用于电池充电管理 IC 的评估模块	BQ2000EVM	开发电路板/EVM