Datasheet > MAX1822

MAX1822

更新时间： 2024-10-03 14:58:19

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MAX1822 数据手册

19-1892; Rev 0; 1/01

High-Side Power Supply

_______________General Description

____________________________Features

The MAX1822 high-side supply, using a regulated

charge pump, generates a regulated output voltage

11V greater than the input supply voltage to power

high-side switching and control circuits. The MAX1822

allows low-resistance N-channel MOSFETs (FETs) to be

used in circuits that normally require costly, less effi-

cient P-channel FETs and PNP transistors. The high-

side output also eliminates the need for logic FETs in

+5V and other low-voltage switching circuits.

ꢀ +3.5V to +16.5V Operating Supply Voltage Range

ꢀ Output Voltage Regulated to V

ꢀ 150µA (typ) Quiescent Current

ꢀ Power-Ready Output

+ 11V (typ)

A +3.5V to +16.5V input supply range and a typical qui-

escent current of only 150µA make the MAX1822 ideal

for a wide range of line- and battery-powered switching

and control applications where efficiency is crucial.

Also provided is a logic-level power-ready output (PR)

to indicate when the high-side voltage reaches the

proper level.

The MAX1822 comes in an 8-pin SO package and

requires three inexpensive external capacitors. The

MAX1822 is a pin-for-pin replacement to the MAX622.

Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

MAX1822ESA

-40°C to +85°C

8 SO

________________________Applications

High-Side Power Control with N-Channel FETs

Low-Dropout Voltage Regulators

Power Switching from Low Supply Voltages

H-Switches

Stepper Motor Drivers

Battery-Load Management

Portable Computers

Pin Configuration

Typical Operating Circuit

+3.5V TO +16.5V

TOP VIEW

0.1µF

CERAMIC

C1+

C1-

C1+

C2-

+12.5V TO +27.5V

C1-

C2+

OUT

MAX1822

C2+

C2-

GND

OUT

GND

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...10

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