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MAX729ECK

更新时间： 2024-11-05 22:55:15

品牌	Logo	应用领域
美信 - MAXIM		稳压器开关
页数	文件大小	规格书
4页	41K
描述
5V/3.3V/3V 2A Step-Down, PWM, Switch-Mode DC-DC Regulators

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数据手册

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MAX729ECK 数据手册

19-0149; Rev 2; 9/95

5 V/3 .3 V/3 V 2 A S t e p -Do w n , P WM,

S w it c h -Mo d e DC-DC Re g u la t o rs

8/MAX729

_______________Ge n e ra l De s c rip t io n

___________________________Fe a t u re s

♦ Input Range: Up to 40V

The MAX727/MAX728/MAX729 are monolithic, bipolar,

pulse-width modulation (PWM), switch-mode, step-down

DC-DC regulators. Each is rated at 2A. Very few external

components are needed for standard operation because

the power switch, oscillator, feedback, and control circuitry

are all on-chip. Employing a classic buck topology, these

regulators perform high-current step-down functions.

♦ 2A On-Chip Power Switch

♦ Fixed Outputs: 5V (MAX727)

3.3V (MAX728)

3V (MAX729)

♦ 100kHz Switching Frequency

♦ Excellent Dynamic Characteristics

♦ Few External Components

♦ 8.5mA Quiescent Current

♦ TO-220 Package

These regulators have excellent dynamic and transient

response characteristics, while featuring cycle-by-cycle cur-

rent limiting to protect against overcurrent faults and short-

circuit output faults. They also have a wide 8V to 40V input

range.

Each regulator is available in a 5-pin TO-220 package.

These devices have a preset 100kHz oscillator frequency

and a preset current limit of 2.6A. See the MAX724/

MAX726 data sheet for more applications information.

______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

5 TO-220

MAX727CCK

MAX727ECK

MAX728CCK

MAX728ECK

MAX729CCK

MAX729ECK

_______________________Ap p lic a t io n s

-40°C to +85°C

0°C to +70°C

5 TO-220

Distributed Power from High-Voltage Buses

High-Current, High-Voltage Step-Down Applications

Multiple-Output Buck Converter

5 TO-220

-40°C to +85°C

0°C to +70°C

5 TO-220

-40°C to +85°C

5 TO-220

__________________P in Co n fig u ra t io n

__________Typ ic a l Op e ra t in g Circ u it

FRONT VIEW

INPUT

8V TO 40V

OUTPUT

5V AT 2A

100µH

220µF

MBR745

MAX727

MAX728

MAX729

SENSE

GND

470µF

2.7k

SENSE

GND

0.01µF

5-PIN TO-220

CASE IS CONNECTED TO GROUND. STANDARD PACKAGE HAS STAGGERED LEADS.

CONTACT FACTORY FOR STRAIGHT LEADS.

STEP-DOWN CONVERTER

________________________________________________________________ Maxim Integrated Products

Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .

12 3 4

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与MAX729ECK相关器件

型号	品牌	获取价格	描述	数据表
MAX729ECM	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729EKS	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HC/D	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HCCK	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HCCM	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HCKS	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HCWE	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HECK	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HECM	MAXIM	获取价格	Voltage-Mode SMPS Controller
MAX729HEKS	MAXIM	获取价格	Voltage-Mode SMPS Controller

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