MAX5080

更新时间： 2024-11-02 05:00:11

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
19页	963K
描述
1A, 40V, MAXPower Step-Down DC-DC Converters

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MAX5080 数据手册

19-3656; Rev 1; 2/07

1A, 40V, MAXPower Step-Down

DC-DC Converters

General Description

Features

The MAX5080/MAX5081 are 250kHz PWM step-down

DC-DC converters with an on-chip, 0.3Ω high-side

switch. The input voltage range is 4.5V to 40V for the

MAX5080 and 7.5V to 40V for the MAX5081. The output

is adjustable from 1.23V to 32V and can deliver up to

1A of load current.

♦ 4.5V to 40V (MAX5080) or 7.5V to 40V (MAX5081)

Input Voltage Range

♦ 1A Output Current

♦ V

Range From 1.23V to 32V

OUT

♦ Internal High-Side Switch

Both devices utilize a voltage-mode control scheme for

good noise immunity in the high-voltage switching envi-

ronment and offer external compensation allowing for

maximum flexibility with a wide selection of inductor val-

ues and capacitor types. The switching frequency is

internally fixed at 250kHz and can be synchronized to

an external clock signal through the SYNC input. Light

load efficiency is improved by automatically switching

to a pulse-skip mode.

♦ Fixed 250kHz Internal Oscillator

♦ Automatic Switchover to Pulse-Skip Mode at

Light Loads

♦ External Frequency Synchronization

♦ Thermal Shutdown and Short-Circuit Protection

♦ Operates Over the -40°C to +125°C Temperature

All devices include programmable undervoltage lock-

out and soft-start. Protection features include cycle-by-

cycle current limit, hiccup-mode output short-circuit

protection, and thermal shutdown. Both devices are

available in a space-saving, high-power (2.7W), 16-pin

TQFN package and are rated for operation over the

-40°C to +125°C temperature range.

Range

♦ Space-Saving (5mm x 5mm) High-Power 16-Pin

TQFN Package

Ordering Information

PIN-

PACKAGE

PKG

CODE

PART

TEMP RANGE

Applications

16 TQFN-EP*

MAX5080ATE -40°C to +125°C

MAX5081ATE -40°C to +125°C

*EP = Exposed pad.

T1655-2

FireWire^®Power Supplies

Distributed Power

Automotive

Industrial

Pin Configurations appear at end of data sheet.

FireWire is a registered trademark of Apple Computer, Inc.

Typical Operating Circuits

4.5V TO 40V

BST

DVREG

C-

C+

BST

OUT

REG

MAX5080

ON/OFF

SYNC SGND PGND

COMP

PGND

Typical Operating Circuits continued at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...19

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与MAX5080相关器件

型号	品牌	获取价格	描述	数据表
MAX5080ATE	MAXIM	获取价格	1A, 40V, MAXPower Step-Down DC-DC Converters
MAX5080ATE+T	MAXIM	获取价格	Switching Regulator/Controller, Voltage-mode, 275kHz Switching Freq-Max, BCDMOS, PQCC16,
MAX5080ATE-T	MAXIM	获取价格	Switching Regulator, Voltage-mode, 3A, 275kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80 M
MAX5081	ADI	获取价格	1A、40V、MAXPower降压型DC-DC转换器
MAX5081ATE	MAXIM	获取价格	1A, 40V, MAXPower Step-Down DC-DC Converters
MAX5081ATE+	MAXIM	获取价格	Switching Regulator, Voltage-mode, 3A, 275kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80 M
MAX5081ATE+T	MAXIM	获取价格	Switching Regulator, Voltage-mode, 3A, 275kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80 M
MAX5081ATE-T	MAXIM	获取价格	Switching Regulator, Voltage-mode, 3A, 275kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80 M
MAX5082	MAXIM	获取价格	1.5A, 40V, MAXPower Step-Down DC-DC Converters
MAX5082	ADI	获取价格	1.5A、40V、MAXPower降压型DC-DC转换器

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