Datasheet > MAX17242

MAX17242

更新时间： 2024-11-08 01:11:11

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
18页	564K
描述
Eliminates External Components and Reduces Total Cost

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中文翻译

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数据手册

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MAX17242 数据手册

EVALUATION KIT AVAILABLE

MAX17242/MAX17243

3.5V–36V, 2A/3A, Synchronous Buck Converter

with 15µA Quiescent Current and Reduced EMI

General Description

Beneﬁts and Features

● Eliminates External Components and Reduces Total Cost

•ꢀ No Schottky-Synchronous Operation for High

EfﬁciencyꢀandꢀReducedꢀCost

The MAX17242/MAX17243 high-efficiency, synchronous

step-down DC-DC converters with integrated MOSFETs

operates over a 3.5V to 36V input voltage range, and

can operate in drop-out condition by running at 99% duty

cycle. The converters deliver up to 2A (MAX17242) and

3A (MAX17243) output current and generate fixed output

voltages of 3.3V/5V, along with the ability to program the

output voltage between 1V to 10V.

•ꢀ Simple external RC Compensation for Stable

Operation at Any Output Voltage

•ꢀ All-Ceramic Capacitor Solution: Ultra-Compact

Layout with as Few as Eight External Components

•ꢀ PGOOD Output and High-Voltage EN Input

Simplify Power Sequencing

The devices use a current-mode-control architecture and

can be operated in the pulse-width modulation (PWM)

or pulse-frequency modulation (PFM) control schemes.

PWM operation provides constant frequency operation at

all loads, and is useful in applications sensitive to switching

frequency. PFM operation disables negative inductor

current and additionally skips pulses at light loads for

high-efficiency operation. The low-resistance, on-chip

MOSFETs ensure high efficiency at full load and simplify

the layout.

● Reduces Number of DC-DC Converters to Stock

•ꢀ Pin Compatibility for 2A/3A Options

•ꢀ Fixed Output Voltage with ±2% Accuracy (5V/3.3V)

or Externally Resistor Adjustable (1V to 10V) with

±1% FB Accuracy

•ꢀ 220kHz to 2.2MHz Adjustable Frequency with

External Synchronization

● Reduces Power Dissipation

•ꢀ 93%ꢀPeakꢀEfﬁciency

•ꢀ Shutdown Feature Blocks Current Flow from Input-

to-Output or Vice-Versa

•ꢀ LessꢀThanꢀ5μAꢀ(typ)ꢀinꢀShutdown

•ꢀ Lowꢀ15μAꢀ(typ)ꢀQuiescentꢀCurrentꢀinꢀStandbyꢀ

Mode

The devices are available in a compact 20-pin (5mm x 5mm)

TQFN package with exposed pad. These parts are rated for

-40°C to +85°C operation.

Applications

● Operates Reliably

● Distributed Supply Regulation

● Wall Transformer Regulation

● General-Purpose Point-of-Load

•ꢀ 42V Input Voltage Transient Protection

•ꢀ Fixed 8ms Internal Software Start Reduces Input

Inrush Current

•ꢀ Cycle-by-Cycle Current Limit, Thermal Shutdown

with Automatic Recovery

Ordering Information appears at end of data sheet.

•ꢀ Reduced EMI Emission with Spread-Spectrum Control

19-7767; Rev 0; 10/15

12 3 4 5 6 7...18

中文翻译

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与MAX17242相关器件

型号	品牌	获取价格	描述	数据表
MAX17242ETPA+	MAXIM	获取价格	Switching Regulator,
MAX17242ETPA+T	MAXIM	获取价格	IC REG BUCK SYNC
MAX17242ETPB+	MAXIM	获取价格	Switching Regulator,
MAX17242ETPB+T	MAXIM	获取价格	IC REG BUCK SYNC
MAX17243	MAXIM	获取价格	Eliminates External Components and Reduces Total Cost
MAX17243	ADI	获取价格	3.5V至36V、2A/3A、同步Buck转换器，15μA静态电流和低EMI
MAX17243ETPA+	MAXIM	获取价格	Switching Regulator,
MAX17243ETPA+T	MAXIM	获取价格	IC REG BUCK SYNC
MAX17243ETPB+	MAXIM	获取价格	Eliminates External Components and Reduces Total Cost
MAX17244	MAXIM	获取价格	Eliminates External Components and Reduces

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