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MAX746CPE

更新时间： 2024-11-23 22:55:11

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
16页	158K
描述
High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller

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技术参数
数据手册
替代型号

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MAX746CPE 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP, DIP16,.3	针数：	16
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.31.00.01	风险等级：	5.63
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	15 V
最小输入电压：	4 V	标称输入电压：	10 V
JESD-30 代码：	R-PDIP-T16	JESD-609代码：	e0
长度：	19.175 mm	功能数量：	1
端子数量：	16	最高工作温度：	70 °C
最低工作温度：		最大输出电流：	3 A
标称输出电压：	5 V	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP16,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
座面最大高度：	4.572 mm	子类别：	Switching Regulator or Controllers
最大供电电流 (Isup)：	0.8 mA	表面贴装：	NO
切换器配置：	SINGLE	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.62 mm	Base Number Matches：	1

MAX746CPE 数据手册

19-0192; Rev 1; 11/93

Hig h -Effic ie n c y, P WM, S t e p -Do w n ,

N-Ch a n n e l DC-DC Co n t ro lle r

MAX746

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

____________________________Fe a t u re s

The MAX746 is a high-efficiency, high-current, step-down

DC-DC power-supply controller that drives external N-chan-

nel FETs. It provides 93% to 96% efficiency from a 6V supply

voltage with load currents ranging from 50mA up to 3A. It

uses a pulse-width-modulating (PWM) current-mode control

scheme to provide precise output regulation and low output

noise. The MAX746's 4V to 15V input voltage range, fixed

♦ 93% to 96% Efficiency for 50mA to 3A

Output Currents

♦ 4V to 15V Input Voltage Range

♦ Low 950µA Supply Current

♦ 1.4µA Shutdown Current

♦ Drives External N-Channel FETs

♦ Fixed-Frequency Current-Mode PWM (Heavy Loads)

♦ Idle-Mode PFM (Light Loads)

5V/adjustable (Dual-Mode ) output, and adjustable current

limit make this device ideal for a wide range of applications.

High efficiency is maintained with light loads due to a propri-

etary automatic pulse-skipping control (Idle-Mode ) scheme

♦ Cycle-by-Cycle Current Limiting

♦ 2V ±1.5% Accurate Reference Output

♦ Adjustable Soft-Start

that minimizes switching losses by reducing the switching fre-

quency at light loads. The low 950µA quiescent current and

ultra-low 1.4µA shutdown current further extend battery life.

♦ Undervoltage Lockout

External components are protected by the MAX746's cycle-

by-cycle current limit. The MAX746 also features a 2V ±1.5%

reference, a comparator for low-battery detection or level

translating, and soft-start and shutdown capability.

♦ Precision Comparator for Power-Fail or

Low-Battery Warning

______________Ord e rin g In fo rm a t io n

The MAX747—d is c us s e d in a s e p a ra te d a ta s he e t—

functions similarly to the MAX746, but drives P-channel logic

level FETs.

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

16 Plastic DIP

16 Narrow SO

Dice*

MAX746CPE

MAX746CSE

MAX746C/D

MAX746EPE

MAX746ESE

MAX746MJE

________________________Ap p lic a t io n s

0°C to +70°C

5V-to-3.3V Green PC Applications

Notebook/Laptop Computers

Personal Digital Assistants

Battery-Operated Equipment

Cellular Phones

0°C to +70°C

-40°C to +85°C

-55°C to +125°C

16 Plastic DIP

16 Narrow SO

16 CERDIP

* 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

INPUT 6V TO 15V

TOP VIEW

V+

AV+

40mΩ

LBO

LBI

GND

V+

MAX746

HIGH

SHDN

EXT

OUTPUT

ON/OFF

39µH

REF

HIGH

EXT

AGND

MAX746

SHDN

LOW-BATTERY

DETECTOR INPUT

440µF

LBI

OUT

LOW-BATTERY

DETECTOR OUTPUT

LBO

REF

SS CC

AGND

GND

AV+

OUT

DIP/SO

™Dual-Mode and Idle-Mode are trademarks of Maxim Integrated Products.

________________________________________________________________ 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...16

中文翻译

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MAX746CPE 替代型号

型号	品牌	替代类型	描述	数据表
MAX1745EUB+T	MAXIM	功能相似	Switching Controller, Voltage-mode, 330kHz Switching Freq-Max, PDSO10, MICRO MAX PACKAGE-1
MAX1745AUB+	MAXIM	功能相似	High-Voltage, Step-Down DC-DC Controllers in
MAX1745EUB+	MAXIM	功能相似	High-Voltage, Step-Down DC-DC Controllers in

与MAX746CPE相关器件

型号	品牌	获取价格	描述	数据表
MAX746CSE	MAXIM	获取价格	High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller
MAX746CSE-T	MAXIM	获取价格	暂无描述
MAX746EPE	MAXIM	获取价格	High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller
MAX746ESE	MAXIM	获取价格	High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller
MAX746MJE	MAXIM	获取价格	High-Efficiency, PWM, Step-Down, N-Channel DC-DC Controller
MAX747	MAXIM	获取价格	High-Efficiency PWM, Step-Down P-Channel DC-DC Controller
MAX7470	MAXIM	获取价格	HDTV Continuously Variable Anti-Aliasing Filters
MAX7470UTP	MAXIM	获取价格	HDTV Continuously Variable Anti-Aliasing Filters
MAX7470UTP+	MAXIM	获取价格	HDTV Continuously Variable Anti-Aliasing Filters
MAX7472	MINILOGIC	获取价格	HDTV Anti-Aliasing Filters with Triple-Input Mux

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