Datasheet > MAX17551

MAX17551

更新时间： 2024-11-16 14:58:07

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
25页	1502K
描述
具有22μA无负载电源电流的60V、50mA、超小型、高效、同步降压型DC-DC转换器

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中文翻译

获取价格

数据手册

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MAX17551 数据手册

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MAX17551

60V, 50mA, Ultra-Small, High-Eﬃciency,

Synchronous Step-Down DC-DC Converter

with 22µA No-Load Supply Current

General Description

Beneﬁts and Features

● Reduces External Components and Total Cost

The MAX17551 high-efficiency, high-voltage, synchronous

step-down DC-DC converter with integrated MOSFETs

operates over a 4V to 60V input. The converter can deliver

up to 50mA and generates output voltages from 0.8V up to

• No Schottky–Synchronous

• 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

±1.75% over -40°C to +125°C.

● Reduces Number of DC-DC Regulators to Stock

• Wide 4V to 60V Input

• Adjustable 0.8V to 0.9 x V Output

• 100kHz to 2.2MHz Adjustable Switching Frequency

with External Synchronization

The MAX17551 uses peak-current-mode control and can

be operated in pulse-width modulation (PWM) or pulse-

frequency modulation (PFM) modes.

The device is available in a 10-pin (3mm x 2mm) TDFN

● Reduces Power Dissipation

• 22µA Quiescent Current

and 10-pin (3mm x 3mm) μMAX packages. Simulation

models are available.

• Peak Eﬃciency > 90%

• PFM Enables Enhanced Light-load Eﬃciency

• 1.2µA Shutdown Current

Applications

● Industrial Sensors and Process Control

● High-Voltage LDO Replacement

● Battery-Powered Equipment

● HVAC and Building Control

● Operates Reliable in Adverse Environments

• Peak Current Limit Protection

• Built-In Output Voltage Monitoring RESET

• Programmable EN/UVLO Threshold

• Monotonic Startup in to Prebiased Load

• Overtemperature Protection

µMAX is a registered trademark of Maxim Integrated Products, Inc.

• 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—High-Eﬃciency 5V, 50mA Regulator

330

OUT

6V TO 60V

MAX17551

10µF

OUT

EN/UVLO

GND

22.1

Ω

OUT

0.22

261k

MODE

Ω

RT/SYNC

49.9k

Ω

140k

SWITCHING FREQUENCY = 300kHz

L1 COILCRAFT LPS5030-334M

Ω

RESET

MURATA 10µF/X7R/6.3V/0805 (GRM21BR70J106K)

MURATA 1µF/X7R/100V/1206 (GRM31CR72A105K)

OUT

19-7110; Rev 3; 1/21

12 3 4 5 6 7...25

中文翻译

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与MAX17551相关器件

型号	品牌	获取价格	描述	数据表
MAX17551AUB+T	MAXIM	获取价格	Switching Regulator/Controller, Current-mode, 0.05A, 2300kHz Switching Freq-Max, BICMOS, P
MAX17552	MAXIM	获取价格	5V Output Voltage Applications
MAX17552	ADI	获取价格	60V、100mA、超小尺寸、高效率、同步降压型DC-DC转换器,空载耗流为22μA
MAX17552A	ADI	获取价格	60V、100mA、超小尺寸、高效率、同步降压型DC-DC转换器,空载耗流为22μA
MAX17552AATB+	MAXIM	获取价格	Switching Controller, Current-mode, 0.1A, 2300kHz Switching Freq-Max, BICMOS, PDSO10,
MAX17552ATBEVKIT	MAXIM	获取价格	5V Output Voltage Applications
MAX17552AUB+	MAXIM	获取价格	Switching Controller, Current-mode, 0.235A, 2300kHz Switching Freq-Max, BICMOS, PDSO10, UM
MAX17552B	MAXIM	获取价格	5V Output Voltage Applications
MAX17552B	ADI	获取价格	60V、100mA、超小尺寸、高效率、同步降压型DC-DC转换器,空载耗流为22μA
MAX17553	ADI	获取价格	4V至60V、50mA、超小型、高效率、同步降压DC-DC转换器

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