Datasheet > MAX17574

MAX17574

更新时间： 2024-09-25 14:58:27

品牌	Logo	应用领域
亚德诺 - ADI		DC-DC转换器
页数	文件大小	规格书
21页	1280K
描述
4.5V-60V、3A、高效、同步降压型DC-DC转换器，带内部补偿

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MAX17574 数据手册

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MAX17574

4.5V to 60V, 3A, High-Eﬃciency,

Synchronous Step-Down DC-DC Converter

with Internal Compensation

General Description

Beneﬁts and Features

● Reduces External Components and Total Cost

The MAX17574, high-efficiency, high-voltage, synchronous

step-down DC-DC converter with integrated MOSFETs

operates over a 4.5V to 60V input. The converter can deliver up

to 3A current. Output voltage is programmable from 0.9V

• No Schottky-Synchronous Operation

• Internal Compensation for Any Output Voltage

• All-Ceramic Capacitors, Compact Layout

up to 90%V . The feedback voltage regulation accuracy

over -40°C to +125°C is ±0.9%.

● Reduces Number of DC-DC Regulators to Stock

• Wide 4.5V to 60V Input

The MAX17574 features a peak-current-mode control

architecture. The device can be operated in the pulse-

width modulation (PWM), pulse-frequency modulation

(PFM), or discontinuous-conduction mode (DCM) control

schemes. A programmable soft-start feature allows users

to reduce input inrush current. The device also incorporates

an output enable/undervoltage lockout pin (EN/UVLO)

that allows the user to turn on the part at the desired

input voltage level. An open-drain RESET pin provides a

delayed power-good signal to the system upon achieving

successful regulation of the output voltage.

• Adjustable Output Voltage Range from 0.9V up to

90% of V

• Delivers up to 3A Current Over Temperature

• 100kHz to 2.2MHz Adjustable Switching Frequency

with External Synchronization

● Reduces Power Dissipation

• Peak Eﬃciency > 90%

• PFM and DCM Modes Enable Enhanced

Light-Load Eﬃciency

• Auxiliary Bootstrap LDO for Improved Eﬃciency

• 2.8µA Shutdown Current

The MAX17574 is available in a 24-pin (4mm x 5mm)

TQFN package. Simulation models are available.

● Operates Reliably in Adverse Industrial Environments

• Hiccup Mode Overload Protection

• Adjustable Soft-Start and Prebiased Power-Up

• Built-In Output-Voltage Monitoring with RESET

• Programmable EN/UVLO Threshold

• Monotonic Startup Into Prebiased Load

• Overtemperature Protection

• High Industrial -40°C to +125°C Ambient Operating

Temperature Range/-40°C to +150°C Junction

Temperature Range

Applications

● Industrial Control Power Supplies

● General-Purpose Point-of-Load

● Distributed Supply Regulation

● Base Station Power Supplies

● Wall Transformer Regulation

● High-Voltage, Single-Board Systems

Ordering Information appears at end of data sheet.

19-8635; Rev 3; 7/18

12 3 4 5 6 7...21

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与MAX17574相关器件

型号	品牌	获取价格	描述	数据表
MAX17574ATG+	MAXIM	获取价格	Switching Regulator, Current-mode, 5.85A, 2450kHz Switching Freq-Max, BICMOS, TQFN-24
MAX17574EVKITB	MAXIM	获取价格	Operates from a 6.5V to 60V Input Supply
MAX17575	MAXIM	获取价格	4.5Vâ60V, 1.5A, High-Efficiency Synchronous
MAX17575	ADI	获取价格	4.5V–60V、1.5A、高效、同步降压型DC-DC转换器，带内部补偿
MAX17575ATC	MAXIM	获取价格	4.5Vâ60V, 1.5A, High-Efficiency Synchronous
MAX17575ATC+	MAXIM	获取价格	Switching Regulator,
MAX17575ATCT	MAXIM	获取价格	4.5Vâ60V, 1.5A, High-Efficiency Synchronous
MAX17575EVKITB	MAXIM	获取价格	Output-Voltage Application
MAX17576	MAXIM	获取价格	4.5V to 60V, 4A, High-Efficiency Synchronous Step-Down DC-DC Converter with Internal Compe
MAX17576	ADI	获取价格	4.5V至60V、4A、高效同步降压型DC-DC转换器，带内部补偿

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