Datasheet > TL284X

TL284X

更新时间： 2024-11-25 22:42:11

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
12页	173K
描述
CURRENT-MODE PWM CONTROLLERS

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

TL284X 数据手册

TL284x, TL384x

CURRENT-MODE PWM CONTROLLERS

SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999

D PACKAGE

(TOP VIEW)

Optimized for Off-Line and dc-to-dc

Converters

Low Start-Up Current (<1 mA)

COMP

REF

13 NC

Automatic Feed-Forward Compensation

Pulse-by-Pulse Current Limiting

Enhanced Load-Response Characteristics

Undervoltage Lockout With Hysteresis

Double-Pulse Suppression

VFB

ISENSE

OUTPUT

GND

POWER GROUND

RT/CT

High-Current Totem-Pole Output

Internally Trimmed Bandgap Reference

500-kHz Operation

NC – No internal connection

D-8 OR P PACKAGE

(TOP VIEW)

Error Amplifier With Low Output

Resistance

COMP

VFB

ISENSE

RT/CT

REF

Designed to Be Interchangeable With

UC2842 and UC3842 Series

OUTPUT

GND

description

The TL284x and TL384x series of control

integrated circuits provide the features that are

necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes with a minimum

number of external components. Some of the internally implemented circuits are an undervoltage lockout

(UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the

error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation

(PWM)comparator(whichalsoprovidescurrent-limitcontrol), andatotem-poleoutputstagedesignedtosource

or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the

off state.

Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges.

TypicalUVLOthresholdsof16V(on)and10V(off)ontheTLx842andTLx844devicesmakethemideallysuited

to off-line applications. The corresponding typical thresholds for the TLx843 and TLx845 devices are 8.4 V (on)

and 7.6 V (off). The TLx842 and TLx843 devices can operate to duty cycles approaching 100%. A duty-cycle

range of 0 to 50% is obtained by the TLx844 and TLx845 by the addition of an internal toggle flip-flop, which

blanks the output off every other clock cycle.

The TL284x-series devices are characterized for operation from –40°C to 85°C. The TL384x-series devices are

characterized for operation from 0°C to 70°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...12

中文翻译

下载PDF

与TL284X相关器件

型号	品牌	获取价格	描述	数据表
TL284X_07	TI	获取价格	CURRENT-MODE PWM CONTROLLERS
TL284X_10	TI	获取价格	CURRENT-MODE PWM CONTROLLERS
TL284X_101	TI	获取价格	CURRENT-MODE PWM CONTROLLERS
TL284XB	TI	获取价格	HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
TL284XD	TI	获取价格	CURRENT-MODE PWM CONTROLLERS
TL284XD-8	TI	获取价格	CURRENT-MODE PWM CONTROLLERS
TL284XP	TI	获取价格	CURRENT-MODE PWM CONTROLLERS
TL287	TI	获取价格	JFET-INPUT OPERATIONAL AMPLIFIERS
TL287CD	TI	获取价格	JFET-INPUT OPERATIONAL AMPLIFIERS
TL287CDR	TI	获取价格	OP-AMP, 1500uV OFFSET-MAX, 3MHz BAND WIDTH, PDSO8, SO-8

与TL284X相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

45
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

34
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

62
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

59

产品中心

服务支持

精选活动

关于我们

帮助中心

TL284X

TL284X 数据手册

与TL284X相关器件

与TL284X相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

TL284X

TL284X 数据手册

与TL284X相关器件

与TL284X相关文章

您还可以找

您在本页遇到什么问题？