Datasheet > UCC38C41DGKR

UCC38C41DGKR

更新时间： 2024-11-18 23:39:03

品牌	Logo	应用领域
其他 - ETC		模拟IC 开关光电二极管信息通信管理
页数	文件大小	规格书
19页	274K
描述
Analog IC

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UCC38C41DGKR 数据手册

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SLUS458B – AUGUST 2001

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FEATURES

DESCRIPTION

1-MHz Operation

50-µA Start-Up Current, 100-µA Maximum

UCC38C4x family is a high-performance current-

mode PWM controller. It is an enhanced BiCMOS

version with pin-for-pin compatibility to the

industry standard UC384xA family and UC384x

family of PWM controllers. In addition, lower

startup voltage versions of 7 V are offered as

UCC38C40 and UCC38C41.

Low Operating Current of 2.3 mA at 52 kHz

50-ns Cycle-by-Cycle Overcurrent Limiting

±1-A Peak Output Current

Rail-to-Rail Output Swings with 25-ns Rise

and 20-ns Fall Times

Providing necessary features to control fixed

frequency, peak current-mode power supplies,

this family offers the following performance

advantages. The device offers high-frequency

operation up to 1 MHz with low start-up and

operating currents, thus minimizing start-up loss

and low operating power consumption for

improved efficiency. The device also features a

very fast current-sense-to-output delay time of

50 ns and a ±1 A peak output current capability

with improved rise and fall times for driving large

external MOSFETs directly.

±1% Initial Trimmed 2.5-V Error Amplifier

Reference

Trimmed Oscillator Discharge Current

MSOP-8 Package Minimizes Board Space

APPLICATIONS

Switch-Mode Power Supplies

dc-to-dc Converters

Board Mount Power Modules

The UCC38C4x family is offered in 8-pin

packages, MSOP (DGK), SOIC (D) and PDIP (P).

FUNCTIONAL BLOCK DIAGRAM

5.0 V

VREF

RT/CT

VREF

VDD

GND

UVLO

VREF

GOOD LOGIC

OSC

(NOTE)

OUT

2.5 V

ERROR AMP

COMP

Note: Toggle flip–flop used only in UCC38C41, UCC38C44, and UCC38C45.

UDG–99139

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.

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与UCC38C41DGKR相关器件

型号	品牌	获取价格	描述	数据表
UCC38C41DGKRG4	TI	获取价格	1A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, MSOP-8
UCC38C41DR	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C41DRG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C41P	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C41PG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C42	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C42D	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C42DG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C42DGK	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C42DGKG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER

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