BQ24735

更新时间： 2024-02-06 04:48:25

品牌	Logo	应用领域
德州仪器 - TI		电池控制器
页数	文件大小	规格书
42页	1517K
描述
1-4 Cell Li Battery SMBus Charge Controller for Supporting Turbo Boost Mode with N-Channel Power MOSFET Selector

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BQ24735 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFN
包装说明：	VQFN-20	针数：	20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	1 week
风险等级：	1.64	Is Samacsys：	N
其他特性：	ADJUSTABLE OUTPUT FROM 0V TO 3.3V	模拟集成电路 - 其他类型：	BATTERY CHARGE CONTROLLER
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	24 V	最小输入电压：	4.5 V
JESD-30 代码：	S-PQCC-N20	JESD-609代码：	e4
长度：	3.5 mm	湿度敏感等级：	2
功能数量：	1	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
标称输出电压：	6 V	封装主体材料：	PLASTIC/EPOXY
封装代码：	HVQCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
座面最大高度：	0.9 mm	最大供电电流 (Isup)：	3 mA
表面贴装：	YES	切换器配置：	PUSH-PULL
最大切换频率：	1100 kHz	温度等级：	INDUSTRIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
阈值电压标称：	+3.75V	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.5 mm	Base Number Matches：	1

BQ24735 数据手册

bq24735

www.ti.com

SLUSAK9 –SEPTEMBER 2011

1-4 Cell Li+ Battery SMBus Charge Controller for Supporting Turbo Boost Mode with

N-Channel Power MOSFET Selector

Check for Samples: bq24735

FEATURES

DESCRIPTION

The bq24735 is

a high-efficiency, synchronous

•

Adapter and Battery Provides Power to

System Together to Support Intel^®CPU Turbo

Boost Mode

battery charger, offering low component count for

space-constraint, multi-chemistry battery charging

applications.

•

SMBus Host-Controlled NMOS-NMOS

Synchronous Buck Converter with

Programmable 615kHz, 750kHz, and 885kHz

Switching Frequencies

The bq24735 supports Turbo Boost by allowing

battery discharge energy to system when system

power demand is temporarily higher than adapter

maximum power level so that adapter will not crash.

•

Automatic N-channel MOSFET Selection of

System Power Source from Adapter or Battery

Driven by Internal Charge Pumps

The bq24735 utilizes two charge pumps to separately

drive n-channel MOSFETs (ACFET, RBFET and

BATFET) for automatic system power source

selection.

Enhanced Safety Features for Over Voltage

Protection, Over Current Protection, Battery,

Inductor and MOSFET Short Circuit Protection

SMBus controlled input current, charge current, and

charge voltage DACs allow for very high regulation

accuracies that can be easily programmed by the

system power management micro-controller.

Programmable Input Current, Charge Voltage,

Charge Current Limits

–

±0.5% Charge Voltage Accuracy up to 19.2V

±3% Charge Current Accuracy up to 8.128A

±3% Input Current Accuracy up to 8.064A

The bq24735 uses internal input current register or

external ILIM pin to throttle down PWM modulation to

reduce the charge current.

±2% 20x Adapter Current or Charge Current

Amplifier Output Accuracy

The bq24735 charges one, two, three or four series

Li+ cells, and is available in a 20-pin, 3.5x3.5 mm²

QFN package.

•

Programmable Battery Depletion Threshold,

and Battery LEARN Function

PIN CONFIGURATION

Programmable Adapter Detection and

Indicator

•

Integrated Soft Start

Integrated Loop Compensation

¹⁵LODRV

¹⁴GND

ACN

ACP

Real Time System Control on ILIM pin to Limit

Charge Current

•

AC Adapter Operating Range 4.5V-24V

CMSRC

ACDRV

ACOK

¹³SRP

bq24735

5µA Off-State Battery Discharge Current

¹²SRN

0.65mA (0.8mA max) Adapter Standby

Quiescent Current

20-pin 3.5 x 3.5 mm²QFN Package

¹¹BATDRV

•

APPLICATIONS

•

Portable Notebook Computers, UMPC,

Ultra-Thin Notebook, and Netbook

•

Handheld Terminal

Industrial and Medical Equipment

Portable Equipment

•

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Intel is a registered trademark of Intel.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...42

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与BQ24735相关器件

型号	品牌	获取价格	描述	数据表
BQ24735_17	TI	获取价格	1- to 4-Cell Li Battery SMBus Charge Controller for Supporting Turbo Boost Mode With N-Cha
BQ24735RGRR	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller for Supporting Turbo Boost Mode with N-Channel
BQ24735RGRT	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller for Supporting Turbo Boost Mode with N-Channel
BQ24740	TI	获取价格	Host-controlled Multi-chemistry Battery Charger with Low Input Power Detect
BQ24740_07	TI	获取价格	Host-controlled Multi-chemistry Battery Charger with Low Input Power Detect
BQ24740RHDR	TI	获取价格	Host-controlled Multi-chemistry Battery Charger with Low Input Power Detect
BQ24740RHDT	TI	获取价格	Host-controlled Multi-chemistry Battery Charger with Low Input Power Detect
BQ24741	TI	获取价格	Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge
BQ24741RHDR	TI	获取价格	Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge
BQ24741RHDT	TI	获取价格	Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge

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