Datasheet > MAX776

MAX776

更新时间： 2024-10-01 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
16页	312K
描述
-5V/-12V/-15V或可调、高效率、低IQ、反相、DC-DC控制器

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中文翻译

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数据手册

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MAX776 数据手册

19-0191; Rev 2; 12/02

-5V/-12V/-15V or Adjustable, High-Efficiency,

Low I_QInverting DC-to-DC Controllers

General Description

Features

The MAX774/MAX775/MAX776 inverting switching

regulators deliver high efficiency over three decades of

load current. A unique current-limited, pulse-

frequency modulated (PFM) control scheme provides

the benefits of pulse-width modulation (high efficiency

with heavy loads), while using less than 100µA of supply

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

is high efficiency over a wide range of loads.

ꢀ 85% Efficiency for 5mA to 1A Load Currents

ꢀ Up to 5W Output Power

ꢀ 100µA (max) Supply Current

ꢀ 5µA (max) Shutdown Current

ꢀ 3V to 16.5V Input Range

ꢀ -5V (MAX774), -12V (MAX775), -15V (MAX776),

These ICs also use tiny external components; their high

switching frequency (up to 300kHz) allows for less than

5mm diameter surface-mount magnetics.

or Adjustable Output Voltage

ꢀ Current-Limited PFM Control Scheme

ꢀ 300kHz Switching Frequency

The MAX774/MAX775/MAX776 accept input voltages from

3V to 16.5V, and have preset output voltages of

-5V, -12V, and -15V, respectively. Or, the output voltage

can be user-adjusted with two resistors. Maximum

V_IN- V_OUTdifferential voltage is limited only by the break-

down voltage of the chosen external switch transistor.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

8 Plastic DIP

8 SO

These inverters use external P-channel MOSFET switches,

allowing them to power loads up to 5W. If less power is

required, use the MAX764/MAX765/MAX766 inverting

switching regulators with on-board MOSFETs.

MAX774CPA

MAX774CSA

MAX774C/D

MAX774EPA

MAX774ESA

MAX774MJA

0°C to +70°C

Dice*

-40°C to +85°C

-55°C to +125°C

8 Plastic DIP

8 SO

Applications

8 CERDIP

LCD-Bias Generators

*Contact factory for dice specifications.

High-Efficiency DC-to-DC Converters

Battery-Powered Applications

Data Communicators

Ordering Information continued on last page.

Typical Operating Circuit

Pin Configuration

INPUT

3V TO 16V

TOP VIEW

V+

MAX774

OUT

GND

EXT

SHDN

ON/OFF

EXT

MAX774

MAX775

MAX776

OUTPUT

-5V

SHDN

REF

V+

REF

DIP/SO

OUT

GND

________________________________________________________________ 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...16

中文翻译

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与MAX776相关器件

型号	品牌	获取价格	描述	数据表
MAX77640	MAXIM	获取价格	Evaluates Both Push-Button and Slider-Switch On-Key Options
MAX77640	ADI	获取价格	超低功耗PMIC，带3路输出SIMO、150mA LDO和电源排序器
MAX77640EVKIT	MAXIM	获取价格	Evaluates Both Push-Button and Slider-Switch On-Key Options
MAX77640EWV+	MAXIM	获取价格	Power Supply Support Circuit,
MAX77641	MAXIM	获取价格	Evaluates Both Push-Button and Slider-Switch On-Key Options
MAX77641	ADI	获取价格	超低功耗PMIC，带3路输出SIMO、150mA LDO和电源排序器
MAX77641AEWV+T	MAXIM	获取价格	Power Supply Support Circuit,
MAX77641EWV+	MAXIM	获取价格	Power Supply Support Circuit,
MAX77642	ADI	获取价格	峰值效率为93%、具有单电感、3输出降压-升压、1-LDO的超可配置PMIC，可延长电池时
MAX77643	ADI	获取价格	Ultra Configurable PMIC Featuring 93% Peak Efficiency Single-Inductor, 3-Output Buck-Boost

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