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MAX5095CAUA*

更新时间： 2024-11-23 03:19:47

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
22页	296K
描述
High-Performance, Single-Ended, Current-Mode PWM Controllers

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数据手册

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MAX5095CAUA* 数据手册

19-3864; Rev 3; 10/06

High-Performance, Single-Ended, Current-Mode

PWM Controllers

General Description

Features

The MAX5094A/B/C/D/MAX5095A/B/C BiCMOS, high-

performance, current-mode PWM controllers have all the

features required for wide input-voltage range

isolated/nonisolated power supplies. These controllers

are used for low- and high-power universal input volt-

age and telecom power supplies.

♦ Pin-for-Pin Replacement for UCC28C43

(MAX5094A) and UCC28C45 (MAX5094B)

♦ 2A Drive Source and 1A Sink Capability

♦ Up to 1MHz Switching Frequency Operation

♦ Bidirectional Frequency Synchronization

(MAX5095A/MAX5095B)

The MAX5094/MAX5095 contain a fast comparator with

only 60ns typical delay from current sense to the output

for overcurrent protection. The MAX5094 has an inte-

grated error amplifier with the output at COMP. Soft-

start is achieved by controlling the COMP voltage rise

using external components.

♦ Advanced Output Drive for Secondary-Side

Synchronous Rectification (MAX5095C)

♦ Fast 60ns Cycle-by-Cycle Current Limit

♦ Trimmed Oscillator Capacitor Discharge Current

Sets Maximum Duty Cycle Accurately

The oscillator frequency is adjustable from 20kHz to

1MHz with an external resistor and capacitor. The tim-

ing capacitor discharge current is trimmed allowing for

programmable dead time and maximum duty cycle for

a given frequency. The available saw-toothed waveform

♦ Accurate 5ꢀ Start ꢁoltage with 0ꢂ8ꢁ Hysteresis

♦ Low 32µA Startup Current

♦ 5ꢁ Regulator Output (REF) with 20mA Capability

♦ ꢁersions with 0ꢂ3ꢁ Current-Sense Threshold

♦ Overtemperature Shutdown

at R C can be used for slope compensation when

needed.

The MAX5095A/MAX5095B include a bidirectional syn-

chronization circuit allowing for multiple controllers to

run at the same frequency to avoid beat frequencies.

Synchronization is accomplished by simply connecting

the SYNC of all devices together. When synchronizing

with other devices, the MAX5095A/MAX5095B with the

highest frequency synchronizes the other devices.

Alternatively, the MAX5095A/MAX5095B can be syn-

chronized to an external clock with an open-drain out-

put stage running at a higher frequency.

Ordering Information

PIN-

PKG

PART

TEMP RANGE

PACKAGE CODE

MAX5094AASA

MAX5094AASA+

MAX5094AAUA*

MAX5094AAUA+

MAX5094BASA*

MAX5094BASA+

MAX5094BAUA*

MAX5094BAUA+

-40°C to +125°C 8 SO

-40°C to +125°C 8 µMAX

-40°C to +125°C 8 SO

-40°C to +125°C 8 µMAX

S8-4

U8-1

S8-4

U8-1

The MAX5095C provides a clock output pulse

(ADV_CLK) that leads the driver output (OUT) by

110ns. The advanced clock signal is used to drive the

secondary-side synchronous rectifiers.

The MAX5094A/B/C are available in the 8-pin SO and

+Denotes lead-free package.

*Future product—contact factory for availability.

Ordering Information continued at end of data sheet.

8-pin µMAX

packages. The MAX5094D and

MAX5095A/B/C are available in the 8-pin µMAX pack-

age. All devices operate over the automotive tempera-

ture range of -40°C to +125°C.

Pin Configurations

Applications

TOP VIEW

Universal Input AC/DC Power Supplies

Isolated Telecom Power Supplies

Isolated Power-Supply Modules

Networking Systems

COMP

REF

MAX5094

OUT

GND

Computer Systems/Servers

Industrial Power Conversion

Isolated Keep-Alive Circuits

R /C

µMAX/SO

Pin Configurations continued at end of data sheet.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...22

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与MAX5095CAUA*相关器件

型号	品牌	获取价格	描述	数据表
MAX5095CAUA+	MAXIM	获取价格	High-Performance, Single-Ended, Current-Mode PWM Controllers
MAX5095CAUA+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 2A, 1000kHz Switching Freq-Max, BICMOS, PDSO8, MO-187C
MAX5096	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096_07	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096_0709	MAXIM	获取价格	40V, 600mA Buck Converters with Low- Quiescent-Current Linear Regulator Mode
MAX5096A	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096AATE+	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096AAUP+	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096B	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5096BATE+	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode

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