Datasheet > MAX17640

MAX17640

更新时间： 2023-12-20 18:44:43

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	2575K
描述
60V、400mA、超小型、高效率、同步降压型DC-DC转换器

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中文翻译

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MAX17640 数据手册

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MAX 17640

60V, 400mA, Ultra-Small, High-Efficiency,

Synchronous Step-Down DC-DC Converters

General Description

Benefits and Features

The Himalaya series of voltage regulator ICs, power mod-

ules, and chargers enable cooler, smaller, and simpler

power-supply solutions. The MAX17640 family of products

are high-efficiency, high-voltage, Himalaya synchronous

DC-DC converters with integrated MOSFETs operating

over a wide input-voltage range of 4.5V to 60V.

● Eliminates External Components and Reduces Total

Cost

• No Schottky—Synchronous Operation for High

Efficiency and Reduced Cost

• Internal Compensation

• Internal Feedback Divider for Fixed 3.3V, 5V Output

Voltages

• Internal Soft-Start

The converters can deliver up to 400mA and generate out-

put voltages from 0.9V to 0.89 x V ; MAX17640A fixed at

• All Ceramic Capacitors, Ultra-Compact Layout

3.3V, MAX17640B fixed at 5.0V, and MAX17640C is ad-

justable. The family of converters is available in a com-

pact, 8-pin, 2mm x 2mm TDFN package. Simulation mod-

els are available to evaluate the performance using the

● Flexibility to Support Multiple Rails in a System

• Wide 4.5V to 60V Input Voltage Range

• Fixed 3.3V and 5V Output Voltage Options

online EE-Sim tool from Maxim.

• Adjustable 0.9V to 0.89 x V Output Voltage

Option

The device employs a peak-current-mode control architec-

ture with a MODE pin that can be used to operate the de-

vice in pulse-width modulation (PWM) or pulse-frequency

modulation (PFM) control schemes. PWM operation pro-

vides constant frequency operation at all loads and is use-

ful in applications sensitive to variable switching frequen-

cy. PFM operation disables negative inductor current and

additionally skips pulses at light loads for high-efficien-

cy. The low-resistance on-chip MOSFETs ensure high-ef-

ficiency at full load and simplify the PCB layout.

• Delivers up to 400mA Load Current

• Configurable Between PFM and Forced-PWM

Modes

● Reduces Power Dissipation

• 92% Peak Efficiency

• PFM Feature for High Light-Load Efficiency

• 2.2µA (typ) Shutdown Current

● Operates Reliably in Adverse Industrial Environments

• Hiccup-Mode Current Limit and Auto-retry Startup

• Built-In Output Voltage Monitoring with Open-Drain

RESET Pin

To reduce input inrush current, the device offers an inter-

nal soft-start. The device also incorporates an EN/UVLO

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

input voltage level. An open-drain RESET pin can be used

for output-voltage monitoring.

• Programmable EN/UVLO Threshold

• Monotonic Startup into Prebiased Output

• Overtemperature Protection

• Wide -40°C to +125°C Ambient Operating

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

Temperature Range

• Complies with CISPR32 (EN55032) Class B

Conducted and Radiated Emissions

Applications

● Industrial Sensors

● 4–20mA Current Loops

● HVAC and Building Control

● High-Voltage LDO Replacement

● General Purpose Point-of-Load

Ordering Information appears at end of data sheet.

Typical Application Circuit

OUT

68µH

OUT

7V TO

60V

5V, 400mA

22µF

1µF

GND

EN/UVLO

MAX17640B

RESET

VCC

1µF

MODE

OUT

EE-Sim is a registered trademark of Maxim Integrated Products, Inc.

19-100951; Rev 0; 1/21

12 3 4 5 6 7...25

中文翻译

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与MAX17640相关器件

型号	品牌	获取价格	描述	数据表
MAX17640A	MAXIM	获取价格	MAX17640 Converters in Application
MAX17640AEVKIT	MAXIM	获取价格	MAX17640 Converters in Application
MAX17640B	MAXIM	获取价格	MAX17640 Converters in Application
MAX17640C	MAXIM	获取价格	MAX17640 Converters in Application
MAX17643	ADI	获取价格	4.5V–60V、2A、高效、同步降压DC-DC转换器，带内部补偿
MAX17644	ADI	获取价格	4.5V to 36V, 2.7A, High-Efficiency, Synchronous Step-Down DC-DC Converter
MAX17644A	MAXIM	获取价格	MAX17644 in 3.3V and 5V Output-Voltage Applications
MAX17644AEVKIT	MAXIM	获取价格	MAX17644 in 3.3V and 5V Output-Voltage Applications
MAX17644B	MAXIM	获取价格	MAX17644 in 3.3V and 5V Output-Voltage Applications
MAX17644C	MAXIM	获取价格	MAX17644 in 3.3V and 5V Output-Voltage Applications

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