MAX16974

更新时间： 2024-01-26 04:55:30

品牌	Logo	应用领域
美信 - MAXIM		转换器高压
页数	文件大小	规格书
19页	1840K
描述
High-Voltage, 2.2MHz, 2A Automotive Step- Down Converter with Low Operating Current

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数据手册

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MAX16974 数据手册

19-5630; Rev 1; 7/11

High-Voltage, 2.2MHz, 2A Automotive Step-

Down Converter with Low Operating Current

General Description

Features

SꢀWide_3.5V_to_28V_Input_Voltage_Range

The MAX16974 is a 2A, current-mode, step-down con-

verter with an integrated high-side switch. It is designed

to operate with 3.5V to 28V input voltages, while using

only 35FA quiescent current at no load. The switching

frequency is adjustable from 220kHz to 2.2MHz by an

external resistor and can be synchronized to an external

clock. The output voltage is pin selectable to be 5V fixed

or 1V to 10V adjustable. The wide input voltage range

makes the device ideal for automotive and industrial

applications.

Sꢀ42V_Input_Transient_Tolerance

Sꢀ5V_Fixed_or_1V_to_10V_Adjustable_Output_Voltage

SꢀIntegrated_2A_Internal_High-Side_Switch

SꢀAdjustable_Switching_Frequency_(220kHz_to_

2.2MHz)

SꢀOperates_Through_Cold_Crank_with_High_Duty_

Cycle

SꢀFrequency_Synchronization_Input

SꢀInternal_Boost_Diode

Sꢀ35µA_Skip-Mode_Operating_Current

Sꢀ5µA_Typical_Shutdown_Current

SꢀAdjustable_Power-Good_Output_Level_and_Timing

Sꢀ3.3V_Logic_Level_to_42V_Compatible_Enable_Input

The device operates in skip mode for reduced current

consumption in light-load applications. An adjustable

reset threshold helps keep microcontrollers alive down to

their lowest specified input voltage. Protection features

include cycle-by-cycle current limit, overvoltage, and

thermal shutdown with automatic recovery. The device

also features a power-good monitor to ease power-

supply sequencing.

SꢀCurrent-Limit,_Thermal-Shutdown,_and_

Overvoltage_Protections

SꢀAutomotive_Temperature_Range:_-40°C_to_+125°C

SꢀAEC-Q100_Qualified

The device operates over the -40°C to +125°C auto-

motive temperature range and is available in a 16-pin

TSSOP-EP package.

Ordering Information

PART

TEMP_RANGE

PIN-PACKAGE

Applications

MAX16974AUE/V+

-40NC to +125NC

16 TSSOP-EP*

Automotive

Industrial

/V Denotes an automotive qualified part.

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

Typical Application Circuit

BAT

IN1

IN2

IN3

IN5

BST

IN4

47µF

4.7µF

0.1µF

4.7µF

SUP

SUPSW

4.7µH

BST

OUT

5V AT 2A

FSYNC

COMP

OUT

22µF

OUT

COMP1

5600pF

MAX16974 RESETI

BIAS

FOSC

COMP2

BIAS

12.1kI

OPEN

COMP

RES

10kI

FOSC

BIAS

20kI

RES

BIAS

1µF

CRES

100pF

CRES

GND

PLACE C (4.7µF) AND C (0.1µF) NEXT TO SUP.

IN2

IN3

PLACE C (0.1µF) AND C (4.7µF) NEXT TO SUPSW.

IN4

IN5

_ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ _Maxim Integrated Products_ _ 1

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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与MAX16974相关器件

型号	品牌	获取价格	描述	数据表
MAX16974AUE	MAXIM	获取价格	High-Voltage, 2.2MHz, 2A Automotive Step- Down Converter with Low Operating Current
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