Datasheet > MAX845EVKIT-MM

MAX845EVKIT-MM

更新时间： 2024-01-14 07:16:50

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
4页	45K
描述
Isolated Power Supply

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中文翻译

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数据手册

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MAX845EVKIT-MM 数据手册

19-0372; Rev 4; 10/97

MAX8 4 5 Eva lu a t io n Kit

Evluates:MAX845

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

____________________________Fe a t u re s

♦ Isolated Power Supply

The MAX845 evaluation kit (EV kit) is an assembled and

tested isolated 5V power supply that meets PCMCIA

height requirements. Two demonstration circuits are

provided: a 100mA circuit that uses an industry-stan-

dard 78L05 regulator, and a 40mA circuit that uses a

low-cost zener shunt regulator. Both circuits consist of

a MAX845 IC (in the µMAX package), a low-profile

transformer, a half-wave rectified voltage doubler, and

a regulator.

♦ Low Profile (for PCMCIA cards)

______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

BOARD TYPE

MAX845EVKIT-MM

0°C to +70°C

Surface Mount

____________________Co m p o n e n t Lis t

DESIGNATION QTY

DESCRIPTION

C11-C14,

_________________________Qu ic k S t a rt

0.1µF ceramic 1206 capacitors

C21-C24

The MAX845 EV kit is fully a s s e mb le d a nd te s te d .

Follow the steps below to verify board operation. Do

not turn on the power supply until all connections

are completed. The circuit on the top half of the board

can provide up to 100mA. The circuit on the lower half

of the board can provide up to 40mA.

D11, D12

Motorola MBR0520L Schottky diodes

Series-connected dual Schottky diodes

Central Semiconductor CMPSH-3S

D21

R22

U11, U21

U12

51Ω 1206 resistor

Maxim MAX845EUA

1) Connect a 4.5V to 5.5V supply to the pad marked

+5V IN. The power-supply ground return connects

to the GND pad.

78L05 in surface-mount 8-pin SOIC

1:1:1 low-profile transformer

Halo TGM-010P3

T11, T21

Z21

2) Connect a voltmeter and load (if any) to the +5OUT

pad. The load ground return connects to the ISO

GND pad.

5.1V, 5% zener in SOT-23

Central Semiconductor CMPZ5231B

3) Turn on the power and verify that the output is 5V

±5%.

4) To evaluate shutdown, cut the trace connecting SD

to GND and connect SD to V

______________Co m p o n e n t S u p p lie rs

SUPPLIER

Central

PHONE

FAX

(516) 435-1110

(516) 435-1824

Semiconductor

Halo Electronics

(415) 969-7313

(602) 244-5303

(415) 367-7158

(602) 244-4015

Motorola

________________________________________________________________ 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

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