MAX748A

更新时间： 2024-09-25 22:55:11

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
12页	136K
描述
3.3V, Step-Down, Current-Mode PWM DC-DC Converters

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MAX748A 数据手册

19-0190; Rev 0; 9/93

3 .3 V, S t e p -Do w n ,

Cu rre n t -Mo d e P WM DC-DC Co n ve rt e rs

48/MX763A

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

________________________________Fe a t u re s

The MAX748A/MAX763A are 3.3V-output CMOS, step-

d own s witc hing re g ula tors . The MAX748A a c c e p ts

inputs from 3.3V to 16V and delivers up to 500mA. The

MAX763A accepts inputs between 3.3V and 11V and

delivers up to 500mA. Typical efficiencies are 85% to

90%. Quiescent supply current is 1.4mA (MAX763A),

and only 0.2µA in shutdown.

♦ Up to 500mA Load Currents

♦ Guaranteed 159kHz to 219.5kHz Current-Mode

PWM

♦ 85% to 90% Efficiencies

♦ 1.7mA Quiescent Current (MAX748A)

1.4mA Quiescent Current (MAX763A)

Pulse-width-modulation (PWM) current-mode control pro-

vides precise output regulation and excellent transient

responses. Output voltage accuracy is guaranteed to be

± 5% ove r line , loa d , a nd te mp e ra ture va ria tions .

Fixed-frequency switching allows easy filtering of output

ripple and noise, as well as the use of small external

components. A 22µH inductor works in most applica-

tions, so no magnetics design is necessary.

♦ 0.2µA Shutdown Supply Current

♦ 22µH Preselected Inductor Value;

No Component Design Required

♦ Overcurrent, Soft-Start, and Undervoltage

Lockout Protection

♦ Cycle-by-Cycle Current Limiting

♦ 8-Pin DIP/SO Packages (MAX763A)

The MAX748A/MAX763A also feature cycle-by-cycle cur-

rent limiting, overcurrent limiting, undervoltage lockout,

and programmable soft-start protection. The MAX748A

is available in 8-pin DIP and 16-pin wide SO packages;

the MAX763A comes in 8-pin DIP and SO packages.

_________________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

8 Plastic DIP

16 Wide SO

Dice*

MAX748ACPA

MAX748ACWE

MAX748AC/D

MAX748AEPA

MAX748AEWE

MAX748AMJA

0°C to +70°C

___________________________Ap p lic a t io n s

5V-to-3.3V Converters

0°C to +70°C

-40°C to +85°C

-55°C to +125°C

8 Plastic DIP

16 Wide SO

8 CERDIP

Cellular Phones

Portable Instruments

Hand-Held Computers

Ordering Information continued on last page.

Computer Peripherals

* Contact factory for dice specifications.

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

____________________P in Co n fig u ra t io n s

INPUT

3.3V TO 16V

TOP VIEW

OUTPUT

3.3V

22µH

V+

MAX748A

SHDN

REF

V+

ON/OFF

SHDN

OUT

MAX748A

MAX763A

GND

OUT

100µF

REF

GND

DIP

Pin Configurations continued on last page.

_______________________________________________________________________ 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 5 6 7...12

中文翻译

下载PDF

与MAX748A相关器件

型号	品牌	获取价格	描述	数据表
MAX748AC/D	MAXIM	获取价格	3.3V, Step-Down, Current-Mode PWM DC-DC Converters
MAX748ACPA	MAXIM	获取价格	3.3V, Step-Down, Current-Mode PWM DC-DC Converters
MAX748ACPA+	MAXIM	获取价格	Switching Regulator, Current-mode, 2A, 212.5kHz Switching Freq-Max, CMOS, PDIP8, PLASTIC,
MAX748ACWE	MAXIM	获取价格	3.3V, Step-Down, Current-Mode PWM DC-DC Converters
MAX748ACWE+	MAXIM	获取价格	Switching Regulator, Current-mode, 2A, 180kHz Switching Freq-Max, CMOS, PDSO16, 0.300 INCH
MAX748ACWE+T	MAXIM	获取价格	Switching Regulator, Current-mode, 2A, 180kHz Switching Freq-Max, CMOS, PDSO16, 0.300 INCH
MAX748AEPA	MAXIM	获取价格	3.3V, Step-Down, Current-Mode PWM DC-DC Converters
MAX748AEPA+	MAXIM	获取价格	Switching Regulator, Current-mode, 2A, 212.5kHz Switching Freq-Max, CMOS, PDIP8, PLASTIC,
MAX748AEWE	MAXIM	获取价格	3.3V, Step-Down, Current-Mode PWM DC-DC Converters
MAX748AEWE+	MAXIM	获取价格	Switching Regulator, Current-mode, 2A, 180kHz Switching Freq-Max, CMOS, PDSO16, 0.300 INCH

与MAX748A相关文章

塔塔电子与力积电达成技术转让协议，携手建设印度首座晶圆厂
2024-09-29

11
英特尔震撼发布：128核心256线程的至强6性能核处理器
2024-09-29

10
SK海力士量产12层HBM3E，容量高达36GB
2024-09-27

14
意法半导体传感器驱动Sphere，开启沉浸式电影新时代
2024-09-27

21

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX748A

MAX748A 数据手册

与MAX748A相关器件

与MAX748A相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX748A

MAX748A 数据手册

与MAX748A相关器件

与MAX748A相关文章

您还可以找

您在本页遇到什么问题？