Datasheet > UCC3884J

UCC3884J

更新时间： 2024-02-26 07:10:55

品牌	Logo	应用领域
德州仪器 - TI		信息通信管理开关
页数	文件大小	规格书
12页	310K
描述
1A SWITCHING CONTROLLER, 750kHz SWITCHING FREQ-MAX, CDIP16, DIP-8

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UCC3884J 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP, DIP16,.3	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.67
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	12 V
最小输入电压：	10 V	标称输入电压：	11 V
JESD-30 代码：	R-CDIP-T16	功能数量：	1
端子数量：	16	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：	CERAMIC, METAL-SEALED COFIRED	封装代码：	DIP
封装等效代码：	DIP16,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	认证状态：	Not Qualified
座面最大高度：	5.08 mm	子类别：	Switching Regulator or Controllers
表面贴装：	NO	切换器配置：	SINGLE
最大切换频率：	750 kHz	技术：	BICMOS
温度等级：	COMMERCIAL	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	7.62 mm	Base Number Matches：	1

UCC3884J 数据手册

UCC2884

UCC3884

www.ti.com............................................................................................................................................. SLUS160C–AUGUST 1999–REVISED NOVEMBER 2008

Frequency Foldback Current Mode PWM Controller

FEATURES

DESCRIPTION

•

Frequency Foldback Reduces Operating

Frequency Under Fault Conditions

The UCC3884 is a high performance current mode

PWM controller intended for single ended switch

mode power supplies. The chip implements

•

Accurate Programmable Volt-Second Clamp

Programmable Maximum Duty Cycle Clamp

Oscillator Synchronization

frequency foldback scheme that decreases the

oscillator frequency as the output voltage falls below

a programmed value. This technique decreases the

average output current sourced into a low impedance

load which can occur during an output short circuit or

overload condition. Excessive short circuit current is

more prevalent in high frequency converters where

the propagation delay and switch turn-off time forces

Overcurrent Protection

Shutdown With Full Soft Start

Wide Gain Bandwidth Amplifier (GBW > 2.5

MHz)

•

Current Mode Operation

Precision 5-V Reference

minimum attainable duty cycle. An accurate

volt-second clamp limits the duty cycle during line or

load transient conditions which could otherwise

saturate the transformer. The volt-second clamp may

also be used with an external overvoltage protection

circuit to handle fault conditions such as current

sense disconnect or current transformer saturation.

The frequency foldback, volt-second clamp,

cycle-by-cycle current limit, and overcurrent shutdown

provide a rich set of protection features for use in

peak current-mode pulse width modulators.

OSCILLATOR SYNCHRONIZATION

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...12

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与UCC3884J相关器件

型号	品牌	描述	获取价格	数据表
UCC3884N	TI	Frequency Foldback Current Mode PWM Controller 16-PDIP 0 to 70	获取价格
UCC3884NG4	TI	Frequency Foldback Current Mode PWM Controller 16-PDIP 0 to 70	获取价格
UCC3884Q	ETC	Current-Mode SMPS Controller	获取价格
UCC3884QTR	TI	暂无描述	获取价格
UCC3885D	TI	IC 0.5 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO14, Switching Regulator or	获取价格
UCC3885N	TI	0.5A SWITCHING CONTROLLER, 400kHz SWITCHING FREQ-MAX, PDIP14	获取价格

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