Datasheet > MAX17544

MAX17544

更新时间： 2024-09-29 14:57:55

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	857K
描述
4.5V–60V、3.5A、高效率、同步降压DC-DC转换器，带内部补偿

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中文翻译

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数据手册

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MAX17544 数据手册

EVALUATION KIT AVAILABLE

MAX17544

4.5V–42V, 3.5A, High-Efficiency,

Synchronous Step-Down DC-DC Converter

With Internal Compensation

General Description

Beneﬁts and Features

The MAX17544 high-efficiency, high-voltage, synchronous

step-down DC-DC converter with integrated MOSFETs

operates over 4.5V to 42V input. The converter can deliver

up to 3.5A and generates output voltages from 0.9V up to

● Reduces External Components and Total Cost

• No Schottky—Synchronous Operation

• Internal Compensation for Any Output Voltage

• Built-In Soft-Start

• All-Ceramic Capacitors, Compact Layout

0.9 x V . The feedback (FB) voltage is accurate to within

±1.1% over -40°C to +125°C.

● Reduces Number of DC-DC Regulators to Stock

The MAX17544 uses peak-current-mode control. The

device can be operated in pulse-width modulation (PWM),

pulse-frequency modulation (PFM), or discontinuous

conduction mode (DCM) control schemes.

• Wide 4.5V to 42V Input

• Adjustable 0.9V to 0.9 x V Output

• 100kHz to 2.2MHz Adjustable Switching Frequency

with External Synchronization

The device is available in a 20-pin (5mm x 5mm) TQFN

package. Simulation models are available.

● Reduces Power Dissipation

• Peak Efﬁciency > 90%

• PFM/DCM Enables Enhanced Light-Load

Efﬁciency

Applications

• 2.8µA Shutdown Current

● Industrial Power Supplies

● Distributed Supply Regulation

● High-Voltage Single-Board Systems

● Base Station Power Supply

● General-Purpose Point-of-Load

● Operates Reliably in Adverse Industrial Environments

• Peak Current-Limit Protection

• 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

Ordering Information appears at end of data sheet.

Typical Application Circuit—5V, 500kHz Switching Frequency

(7.5V TO 42V)

2.2µF

EN/UVLO

BST

0.1µF

10µH

OUT

5V, 3.5A

SYNC

MODE

22µF

MAX17544

100kΩ

SGND

2.2µF

22.1kΩ

RESET

CF SS

PGND PGND PGND

12000pF

= 500kHz

19-7055; Rev 1; 7/16

12 3 4 5 6 7...21

中文翻译

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与MAX17544相关器件

型号	品牌	获取价格	描述	数据表
MAX17545	ADI	获取价格	4.5V-42V、1.7A、高效、同步降压型DC-DC转换器，带内部补偿
MAX17545ATP+	MAXIM	获取价格	Switching Regulator, Current-mode, 3.25A, 2450kHz Switching Freq-Max, BICMOS, 4 X 4 MM, RO
MAX17546	ADI	获取价格	4.5V至42V、5A、高效同步降压型DC-DC转换器，带内部补偿
MAX17548	ADI	获取价格	42V、双输出、同步降压型控制器
MAX17548ATJ+	MAXIM	获取价格	Dual Switching Controller,
MAX1755	MAXIM	获取价格	SOT23 Local Temperature Comparators with SMBus Serial Interface
MAX17550	ADI	获取价格	具有22μA无负载电源电流的60V、25mA、超小型、高效、同步降压型DC-DC转换器
MAX17550ATB+	MAXIM	获取价格	Switching Regulator, Current-mode, 0.078A, 2300kHz Switching Freq-Max, BICMOS, PDSO10, TDF
MAX17550AUB+	MAXIM	获取价格	Switching Regulator, Current-mode, 0.078A, 2300kHz Switching Freq-Max, BICMOS, PDSO10, UMA
MAX17550AUB+T	MAXIM	获取价格	IC REG BUCK ADJ 25MA SYNC 10UMAX

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