Datasheet > UC284XADM

UC284XADM

更新时间： 2024-11-16 08:26:23

品牌	Logo	应用领域
美高森美 - MICROSEMI		/
页数	文件大小	规格书
8页	381K
描述
CURRENT MODEPWM CONTROLER

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中文翻译

获取价格

数据手册

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UC284XADM 数据手册

UC184xA / 284xA / 384xA

CURRENT

MODE PWM CONTROLLER

R O D U C T I O N D A T A S H E E T

H E

N F I N I T E

O W E R O F

I N N O V A T I O N

KEY FEATURES

DESCRIPTION

The UC184xA family of control ICs provides externally programmable oscillator to set

all the necessary features to implement off-line frequency and maximum duty cycle. The

fixed-frequency, current-mode switching power undervoltage lock-out is designed to operate with

LOW START-UP CURRENT.

(0.5mA max.)

TRIMMED OSCILLATOR

DISCHARGE CURRENT. (See

Product Highlight)

OPTIMIZED FOR OFF-LINE

AND DC-TO-DC

CONVERTERS.

AUTOMATIC FEED FORWARD

COMPENSATION.

PULSE-BY-PULSE CURRENT

LIMITING.

ENHANCED LOAD RESPONSE

CHARACTERISTICS.

UNDER-VOLTAGE LOCKOUT

WITH HYSTERESIS.

DOUBLE PULSE

SUPPRESSION.

HIGH-CURRENT TOTEM POLE

OUTPUT.

INTERNALLY TRIMMED

BANDGAP REFERENCE.

500KHz OPERATION.

LOW RO ERROR AMPLIFIER.

supplies with

minimum of external 250µA typ. start-up current, allowing an efficient

components. The current mode architecture bootstrap supply voltage design. Available

demonstrates improved load regulation, pulse- options for this family of products, such as start-

by-pulse current limiting and inherent protection up voltage hysteresis and duty cycle, are

of the power supply output switch. The IC summarized below in the Available Options

includes: A bandgap reference trimmed to ±1% section. The UC184xA family of control ICs is

accuracy, an error amplifier, a current sense also available in 14-pin SOIC package which

comparator with internal clamp to 1V, a high makes the Power Output Stage Collector and

current totem pole output stage for fast Ground pins available.

switching of power MOSFET's, and an

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

PRODUCT HIGHLIGHT

COMPARISON OF UC384

VS. SG384

ISCHARGE URRENT

UC384xA

SG384x

Min. Limit

SG384x

Max. Limit

T =25 C

KEY FEATURES

ECONOMICAL OFF-LINE

FLYBACK OR FORWARD

CONVERTERS.

DC-DC BUCK OR BOOST

CONVERTERS.

LOW COST DC MOTOR

CONTROL.

7.5

7.8

-3s

8.3

Mean

8.8

+3s

9.3

Available Options

Start-Up

Max. Duty

Cycle

Part#

Hysteresis

Voltage

UCx842A

UCx843A

UCx844A

UCx845A

16V

8.4V

16V

0.8V

<100%

<50%

Discharge Current Distribution - mA

8.4A

0.8V

<50%

PACKAGE ORDER INFO

Plastic DIP

8-Pin

Plastic SOIC

8-Pin

Plastic SOIC

14-Pin

Ceramic DIP

8-Pin

T_A(°C)

RoHS Compliant / Pb-free

Transition DC: 0503

RoHS Compliant / Pb-free Transition DC: 0440

0 to 70

-40 to +85

-55 to 125

UC384xAM

UC284xAM

UC384xADM

UC284xADm

UC384xAD

UC284xAD

UC284xAY

UC184xAY

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. UC3842ADM-TR)

I N

I N I T Y

I C R O E L E C T R O N I C S

I N C .

Rev. 1.2a,2005-03-09

11861 WESTERN

VENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570

12 3 4 5 6 7 8

中文翻译

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与UC284XADM相关器件

型号	品牌	获取价格	描述	数据表
UC284XAM	MICROSEMI	获取价格	CURRENT MODEPWM CONTROLER
UC284XAY	MICROSEMI	获取价格	CURRENT MODEPWM CONTROLER
UC284XBD	ONSEMI	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBD	MOTOROLA	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBD1	ONSEMI	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBD1	MOTOROLA	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBD1G	ONSEMI	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBD1R2	ONSEMI	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBD1R2G	ONSEMI	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC284XBDG	ONSEMI	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS

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