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MAX652ESA

更新时间： 2024-09-17 22:58:07

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
16页	267K
描述
5V/3.3V/3V or Adjustable, High-Efficiency,

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中文翻译

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数据手册
替代型号

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MAX652ESA 数据手册

19-0225; Rev 3; 9/97

5 V/3 .3 V/3 V o r Ad ju s t a b le , Hig h -Effic ie n c y,

Lo w I , S t e p -Do w n DC-DC Co n t ro lle rs

491/MAX652

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

____________________________Fe a t u re s

♦ More than 90% Efficiency (10mA to 1.5A Loads)

♦ More than 12.5W Output Power

The MAX649/MAX651/MAX652 BiCMOS, step-down DC-

DC switching controllers provide high efficiency over

three decades of load current. A unique, current-limited

pulse-frequency-modulated (PFM) control scheme gives

these devices the benefits of pulse-width-modulation

(PWM) converters (high efficiency at heavy loads), while

using only 100µA of supply current (vs. 2mA to 10mA for

PWM converters). The result is high efficiency over loads

ranging from 10mA to more than 2.5A.

♦ 100µA Max Quiescent Supply Current

♦ 5µA Max Shutdown Supply Current

♦ Less than 1.0V Dropout Voltage

♦ 16.5V Max Input Voltage

♦ 5V (MAX649), 3.3V (MAX651), 3V (MAX652),

or Adjustable Output Voltage

These devices use miniature external components.

Their high switching frequency (up to 300kHz) allows

for less than 9mm diameter surface-mount inductors.

♦ Current-Limited Control Scheme

♦ Up to 300kHz Switching Frequency

The MAX649/MAX651/MAX652 have dropout voltages

less than 1V and accept input voltages up to 16.5V.

Outp ut volta g e s a re p re s e t a t 5V (MAX649), 3.3V

(MAX651), and 3V (MAX652). These controllers can

also be adjusted to any voltage from 1.5V to the input

voltage by using two resistors.

______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

8 Plastic DIP

8 SO

These step-down controllers drive external P-channel

MOSFETs at loads greater than 10W. If less power is

required, use the MAX639/MAX640/MAX653 step-down

c onve rte rs with on-c hip FETs , whic h a llow up to a

225mA load current.

MAX649CPA

MAX649CSA

MAX649C/D

MAX649EPA

MAX649ESA

MAX649MJA

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

5V-to-3.3V Green PC Applications

8 CERDIP**

Ordering Information continued at end of data sheet.

* Dice are tested at T = +25°C.

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

High-Efficiency Step-Down Regulation

Minimum-Component DC-DC Converters

Battery-Powered Applications

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

__________________P in Co n fig u ra t io n

INPUT

4V TO 16.5V

TOP VIEW

V+

OUT

GND

EXT

MAX651

SHDN

ON/OFF

MAX649

MAX651

MAX652

SHDN

REF

EXT

OUTPUT

3.3V

V+

DIP/SO

OUT

REF

FB GND

________________________________________________________________ Maxim Integrated Products

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

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...16

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MAX652ESA 替代型号

型号	品牌	替代类型	描述	数据表
MAX652ESA+	MAXIM	功能相似	Switching Controller, Current-mode, 300kHz Switching Freq-Max, BICMOS, PDSO8, 0.150 INCH,

与MAX652ESA相关器件

型号	品牌	获取价格	描述	数据表
MAX652ESA+	MAXIM	获取价格	Switching Controller, Current-mode, 300kHz Switching Freq-Max, BICMOS, PDSO8, 0.150 INCH,
MAX652ESA+T	MAXIM	获取价格	暂无描述
MAX652ESA-T	MAXIM	获取价格	Switching Controller, Current-mode, 1.5A, 300kHz Switching Freq-Max, BICMOS, PDSO8, 0.150
MAX652MJA	MAXIM	获取价格	5V/3.3V/3V or Adjustable, High-Efficiency,
MAX653	MAXIM	获取价格	5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
MAX653C/D	MAXIM	获取价格	5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
MAX653CPA	MAXIM	获取价格	5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
MAX653CPA	ROCHESTER	获取价格	1A SWITCHING REGULATOR, PDIP8, PLASTIC, DIP-8
MAX653CPA+	MAXIM	获取价格	Switching Regulator, Current-mode, 1A, CMOS, PDIP8, PLASTIC, DIP-8
MAX653CSA	MAXIM	获取价格	5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters

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