Datasheet > 电源电路 > 开关式稳压器或控制器> UCC38C40DG4

UCC38C40DG4

更新时间： 2024-11-22 12:02:03

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数	文件大小	规格书
32页	894K
描述
BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER

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技术参数
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UCC38C40DG4 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	GREEN, PLASTIC, MS-012AA, SOIC-8	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.18
Is Samacsys：	N	其他特性：	ALSO OPERATES IN CURRENT MODE
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	18 V
最小输入电压：	12 V	标称输入电压：	15 V
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e4
长度：	4.9 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.75 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	SINGLE
最大切换频率：	1000 kHz	技术：	BICMOS
温度等级：	COMMERCIAL	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

UCC38C40DG4 数据手册

UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45

UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45

SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010

BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER

FEATURES

DESCRIPTION

Enhanced Replacement for UC3842A Family

With Pin-to-Pin Compatibility

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.

1-MHz Operation

50-μA Standby Current, 100-μA Maximum

Low Operating Current of 2.3 mA at 52 kHz

Fast 35-ns Cycle-by-Cycle Overcurrent

Limiting

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

35 ns and a ±1 A peak output current capability

with improved rise and fall times for driving large

external MOSFETs directly.

±1-A Peak Output Current

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

and 20-ns Fall Times

±1% Initial Trimmed 2.5-V Error Amplifier

Reference

Trimmed Oscillator Discharge Current

New Under Voltage Lockout Versions

MSOP-8 Package Minimizes Board Space

APPLICATIONS

Switch-Mode Power Supplies

The UCC38C4x family is offered in 8-pin

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

dc-to-dc Converters

Board Mount Power Modules

FUNCTIONAL BLOCK DIAGRAM

5.0 V

VREF

VDD

GND

UVLO

VREF

GOOD LOGIC

RT/CT

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.

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.

www.ti.com

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与UCC38C40DG4相关器件

型号	品牌	获取价格	描述	数据表
UCC38C40DGK	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C40DGKG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C40DGKR	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C40DGKRG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C40DR	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C40DRG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C40P	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C40PG4	TI	获取价格	BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
UCC38C41	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER
UCC38C41D	TI	获取价格	BICMOS LOW POWER CURRENT MODE PWM CONTROLLER

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