Datasheet > 电源电路 > 开关式稳压器或控制器> MAX5099ATJ+

MAX5099ATJ+

更新时间： 2024-11-29 13:10:39

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
27页	635K
描述
Dual Switching Controller, Voltage-mode, 5A, 2200kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-2, TQFN-32

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MAX5099ATJ+ 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：	HVQCCN, LCC32,.2SQ,20	针数：	32
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	2.32	其他特性：	ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 25.2 V; IT CAN ALSO OPERATES FROM 4.5 TO 5.5
模拟集成电路 - 其他类型：	DUAL SWITCHING CONTROLLER	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	19 V
最小输入电压：	5.2 V	标称输入电压：	12 V
JESD-30 代码：	S-XQCC-N32	长度：	5 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	32	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电流：	5 A
标称输出电压：	5.2 V	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC32,.2SQ,20
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）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	PHASE-SHIFT
最大切换频率：	2200 kHz	技术：	BICMOS
温度等级：	INDUSTRIAL	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	5 mm
Base Number Matches：	1

MAX5099ATJ+ 数据手册

19-4112; Rev 0; 5/08

Dual, 2.2MHz, Automotive Synchronous Buck

Converter with 80V Load-Dump Protection

MAX509

General Description

Features

The MAX5099 offers a dual-output, high-switching-fre-

quency DC-DC buck converter with an integrated high-

side switch. The MAX5099 integrates two low-side

MOSFET drivers to allow each converter to drive an

external synchronous-rectifier MOSFET. Converter 1

delivers up to 2A output current, and converter 2 can

deliver up to 1A of output current. The MAX5099 inte-

grates load-dump protection circuitry that is capable of

handling load-dump transients up to 80V for automotive

applications. The load-dump protection circuit utilizes

an internal charge pump to drive the gate of an external

n-channel MOSFET. When an overvoltage or load-

dump condition occurs, the series protection MOSFET

absorbs the high voltage transient to prevent damage

to lower voltage components.

♦ Wide 4.5V to 5.5V or 5.2V to 19V Input Voltage

Range with 80V Load-Dump Protection

♦ Dual-Output DC-DC Converter with Integrated

Power MOSFETs

♦ Adjustable Outputs from 0.8V to 0.9V

♦ Output Current Capability Up to 2A and 1A

♦ Switching Frequency Programmable from 200kHz

to 2.2MHz

♦ Synchronization Input (SYNC)

♦ Individual Converter Enable Input and Power-

The DC-DC converter operates over a wide 4.5V to 19V

operating voltage range. The MAX5099 operates 180°

out-of-phase with an adjustable switching frequency to

minimize external components while allowing the ability

to make trade-offs between the size, efficiency, and

cost. The high switching frequency also allows these

devices to operate outside the AM band for automotive

applications. These regulators can be protected

against high voltage transients such as a load-dump

condition by using the integrated overvoltage controller.

Good Output

♦ Low-I (7µA) Standby Current (ON/OFF)

♦ Internal Digital Soft-Start and Soft-Stop

♦ Short-Circuit Protection on Outputs and

Maximum Duty-Cycle Limit

♦ Overvoltage Protection on Outputs with Auto

Restart

This device utilizes voltage-mode control for stable

operation and external compensation, so that the loop

gain is tailored to optimize component selection and

transient response. The MAX5099 has a maximum duty

cycle of 92.5% and is synchronized to an external clock

fed at the SYNC input.

♦ Thermal Shutdown

♦ Thermally Enhanced 32-Pin TQFN Package

Dissipates Up to 2.7W at +70°C

Additional features include internal digital soft-start,

individual enable for each DC-DC regulator (EN1 and

EN2), open-drain power-good outputs (PGOOD1 and

PGOOD2), and shutdown input (ON/OFF).

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

-40°C to +125°C

Other features of the MAX5099 include overvoltage pro-

tection and short-circuit (hiccup current limit) and ther-

mal protection. The MAX5099 is available in a thermally

enhanced, exposed pad 5mm x 5mm, 32-pin TQFN

package and operates over the automotive -40°C to

+125°C temperature range.

MAX5099ATJ+

32 TQFN-EP*

+Denotes a lead-free package.

*EP = Exposed pad.

Applications

Automotive AM/FM Radio Power Supply

Pin Configuration appears at end of data sheet.

Automotive Instrument Cluster Display

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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