Datasheet > MAX845

MAX845

更新时间： 2024-11-24 15:19:47

品牌	Logo	应用领域
亚德诺 - ADI		变压器 PC 驱动驱动器
页数	文件大小	规格书
16页	213K
描述
隔离型、变压器驱动器，适用于PCMCIA设计

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中文翻译

获取价格

数据手册

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MAX845 数据手册

19-0372; Rev 4; 10/97

Is o la t e d Tra n s fo rm e r Drive r

fo r P CMCIA Ap p lic a t io n s

MAX845

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

____________________________Fe a t u re s

The MAX845 provides an isolated power supply small

enough to fit in thin PCMCIA cards and space-sensitive

applications. It drives a low-profile center-tapped trans-

former primary from a 5V or 3.3V DC power supply. The

secondary can be wound to provide any isolated posi-

tive or negative voltage at powers up to 750mW.

♦ Transformer Driver for Ultra-Thin 5V-µs Transformers

♦ Isolated DC-to-DC Power Supply for PCMCIA

Applications

♦ 450kHz Minimum Switching Frequency

♦ Ultra-Low Input Supply Current Ripple

♦ Single +5V or +3.3V Supply

The MAX845 consists of an oscillator followed by a tog-

gle flip-flop. The flip-flop generates two 50% duty-cycle

square waves, which are complementary at half the

oscillator frequency (450kHz, min). These two signals

drive the ground-referenced N-channel power switch-

es. Internal circuitry ensures break-before-make action

between the two switches.

♦ 5µW Low-Power Shutdown Mode

♦ 8-Pin SO and µMAX Packages

♦ Low Output Ripple Permits Miniature Output

Capacitors

A low-power shutdown disables both the switches and

the oscillator, reducing power consumption. An evalua-

tion kit (MAX845EVKIT-MM) is available to evaluate low-

profile 5V 40mA and 5V 100mA applications.

________________________Ap p lic a t io n s

_______________Ord e rin g In fo rm a t io n

PCMCIA Modem Cards

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

Dice*

Isolated Data Acquisition

Isolated Interface Power Supply

Noise-Immunity Communications Interface

Bridging Ground Differences

Medical Equipment

MAX845C/D

MAX845ESA

MAX845EUA

-40°C to +85°C

8 SO

8 µMAX

*Contact factory for dice specifications.

Process Control

Low-Power LAN Networks

___________________P in Co n fig u ra t io n

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

TOP VIEW

ON / OFF

OUTPUT

CR1

5V @ 150mA

GND1

GND2

MAX845

N.C.

FREQUENCY

SELECT

GND1

GND2

SO/µMAX

CR2

________________________________________________________________ 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 5 6 7...16

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与MAX845相关器件

型号	品牌	获取价格	描述	数据表
MAX845C/D	MAXIM	获取价格	Isolated Transformer Driver for PCMCIA Applications
MAX845ESA	MAXIM	获取价格	Isolated Transformer Driver for PCMCIA Applications
MAX845ESA/GH9	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, 1A, PDSO8, 0.150 INCH, MS-012A, SOIC-8
MAX845ESA/GH9-T	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, 1A, PDSO8, 0.150 INCH, MS-012A, SOIC-8
MAX845ESA+G55	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, PDSO8, 0.150 INCH, MS-012A, SOIC-8
MAX845ESA+T	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, PDSO8, 0.150 INCH, MS-012A, SOIC-8
MAX845ESA-T	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, 1A, PDSO8, 0.150 INCH, MS-012A, SOIC-8
MAX845EUA	MAXIM	获取价格	Isolated Transformer Driver for PCMCIA Applications
MAX845EUA+	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, PDSO8, UMAX-8
MAX845EUA+T	MAXIM	获取价格	Buffer/Inverter Based Peripheral Driver, PDSO8, UMAX-8

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