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MAX772EPA

更新时间： 2024-09-27 22:12:31

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
20页	207K
描述
5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers

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数据手册

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MAX772EPA 数据手册

19-0202; Rev 2; 11/96

5 V/1 2 V/1 5 V o r Ad ju s t a b le , High-Effic ie nc y,

Low I , Ste p-Up DC-DC Controlle rs

0–MAX73

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

____________________________Fe a t u re s

♦ 90% Efficiency for 10mA to 1A Load Currents

♦ Up to 15W Output Power

The MAX770–MAX773 step-up switching controllers pro-

vid e 90% e ffic ie nc y ove r a 10mA to 1A loa d . A

unique current-limited pulse-frequency-modulation (PFM)

control scheme gives these devices the benefits of

pulse-width-modulation (PWM) converters (high efficiency

at heavy loads), while using less than 110µA of supply

current (vs. 2mA to 10mA for PWM converters).

♦ 110µA Max Supply Current

♦ 5µA Max Shutdown Current

♦ 2V to 16.5V Input Range

These ICs use tiny external components. Their high

switching frequencies (up to 300kHz) allow surface-

mount magnetics of 5mm height and 9mm diameter.

(MAX770/MAX771/MAX772)

♦ Internal Shunt Regulator for High Input Voltages

(MAX773)

The MAX770/MAX771/MAX772 accept input voltages

from 2V to 16.5V. Output voltages are preset at 5V,

(MAX770), 12V (MAX771), and 15V (MAX772); they can

also be adjusted using two resistors.

♦ Preset or Adjustable Output Voltages

MAX770: 5V or Adjustable

MAX771: 12V or Adjustable

The MAX773 accepts inputs from 3V to 16.5V. For a wider

input range, it features an internal shunt regulator that

allows unlimited higher input voltages. The MAX773’s out-

put can be set to 5V, 12V, or 15V, or it can be adjusted

with two resistors.

MAX772: 15V or Adjustable

MAX773: 5V, 12V, 15V, or Adjustable

♦ Current-Limited PFM Control Scheme

♦ 300kHz Switching Frequency

The MAX770–MAX773 drive external N-channel MOSFET

switches, allowing them to power loads up to 15W. If less

p owe r is re q uire d , us e the MAX756/MAX757 or

MAX761/MAX762 step-up switching regulators with on-

board MOSFETs.

______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

Plastic DIP

8 SO

MAX770CPA

MAX770CSA

MAX770C/D

MAX770EPA

MAX770ESA

MAX770MJA

0°C to +70°C

________________________Ap p lic a t io n s

0°C to +70°C

Dice*

Palmtops/Handy-Terminals

High-Efficiency DC-DC Converters

Battery-Powered Applications

Positive LCD-Bias Generators

Portable Communicators

-40°C to +85°C

-55°C to +125°C

8 Plastic DIP

8 SO

8 CERDIP**

Ordering Information continued at end of data sheet.

*Contact factory for dice specifications.

**Contact factory for availability and processing to MIL-STD-883B.

Flash Memory Programmers

_________________P in Co n fig u ra t io n s

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

TOP VIEW

INPUT

2V TO V

OUT

EXT

V+

OUTPUT

12V

GND

AGND

MAX770

MAX771

MAX772

EXT

MAX771

SHDN

ON/OFF

REF

SHDN

REF

DIP/SO

V+

FB AGND GND

Pin Configurations continued at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

12 3 4 5 6 7...20

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与MAX772EPA相关器件

型号	品牌	获取价格	描述	数据表
MAX772ESA	MAXIM	获取价格	5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX772MJA	MAXIM	获取价格	5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX773	MAXIM	获取价格	5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX773	ADI	获取价格	5V/12V/15V或可调、高效率、低IQ、升压型DC-DC控制器
MAX77301	MAXIM	获取价格	JEITA-Compliant, Li Charger with Smart Power Selector, Automatic Detection
MAX77301	ADI	获取价格	符合JEITA标准的锂离子充电器，带有Smart Power Selector、自动检测和
MAX77301A	ADI	获取价格	符合JEITA标准的锂离子充电器，带有Smart Power Selector、自动检测和
MAX77324	ADI	获取价格	4.8VIN、1.5A、高效、超小尺寸Buck转换器
MAX77342EWE+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1.6A, 4000kHz Switching Freq-Max, BICMOS, PBGA16, WLP-
MAX77348	ADI	获取价格	超低 IQ、低噪声 3.5W 升降压转换器

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