MAX776

更新时间： 2024-11-17 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	164K
描述
-5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers

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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 1; 3/94

-5V/-12V/-15V or Adjus ta ble ,

High-Effic ie nc y, Low I Inve rting DC-DC Controlle rs

45/MAX76

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

____________________________Fe a t u re s

♦ 85% Efficiency for 5mA to 1A Load Currents

♦ Up to 5W Output Power

The MAX774/MAX775/MAX776 inve rting s witc hing

regulators deliver high efficiency over three decades of

loa d c urre nt. A uniq ue c urre nt-limite d , p uls e -

frequency-modulated (PFM) control scheme provides

the benefits of pulse-width modulation (high efficiency

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

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

result is high efficiency over a wide range of loads.

♦ 100µA Max Supply Current

♦ 5µA Max Shutdown Current

♦ 3V to 16.5V Input Range

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

or Adjustable Output Voltage

These ICs also use tiny external components; their high

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

5mm diameter surface-mount magnetics.

♦ Current-Limited PFM Control Scheme

♦ 300kHz Switching Frequency

The MAX774/MAX775/MAX776 accept input voltages from

3V to 16.5V, a nd ha ve p re s e t outp ut volta g e s of

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

c a n b e us e r-a d jus te d with two re s is tors . Ma ximum

______________Ord e rin g In fo rm a t io n

- V

differential voltage is limited only by the break-

OUT

down voltage of the chosen external switch transistor.

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

8 Plastic DIP

8 SO

These inverters use external P-channel MOSFET switch-

es, 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

________________________Ap p lic a t io n s

LCD-Bias Generators

8 CERDIP

Ordering Information continued on last page.

* Contact factory for dice specifications.

High-Efficiency DC-DC Converters

Battery-Powered Applications

Data Communicators

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

__________________P in Co n fig u ra t io n

INPUT

3V TO 16V

TOP VIEW

V+

MAX774

OUT

GND

EXT

SHDN

ON/OFF

MAX774

MAX775

MAX776

EXT

OUTPUT

-5V

SHDN

REF

V+

REF

DIP/SO

OUT

GND

________________________________________________________________ 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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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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