UCC281

更新时间： 2024-11-25 11:07:55

品牌	Logo	应用领域
德州仪器 - TI		电源电路线性稳压器IC
页数	文件大小	规格书
10页	101K
描述
具有 -40°C 至 +85°C 工作温度范围和反向电流保护功能的 1A、低压降稳压器

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

UCC281 数据手册

UCC281-3/-5/-ADJ

UCC381-3/-5/-ADJ

Low Dropout 1 Ampere Linear Regulator Family

DESCRIPTION

FEATURES

The UCC381-3/-5/-ADJ family of positive linear series pass regulators is

tailored for low drop out applications where low quiescent power is impor-

tant. Fabricated with a BiCMOS technology ideally suited for low input to

output differential applications, the UCC381 will pass 1A while requiring

only 0.5V of input voltage headroom. Dropout voltage decreases linearly

with output current, so that dropout at 200mA is less than 100mV. Quies-

cent current is always less than 650µA. To prevent reverse current conduc-

tion, on-chip circuitry limits the minimum forward voltage to typically 50mV.

Once the forward voltage limit is reached, the input-output differential volt-

age is maintained as the input voltage drops until undervoltage lockout dis-

ables the regulator.

• Precision Positive Linear Voltage

Regulation

• 0.5V Dropout at 1A

• Guaranteed Reverse Input/ Output

Voltage Isolation with Low Leakage

• Low Quiescent Current Irrespective of

Load

• Adjustable Output Voltage Version

• Fixed Versions for 3.3V and 5V

Outputs

UCC381-3 and UCC381-5 versions have on-chip resistor networks preset

to regulate either 3.3V or 5.0V, respectively. Furthermore, remote sensing

of the load voltage is possible by connecting the VOUTS pin directly at the

load. The output voltage is then regulated to 1.5% at room temperature and

better than 2.5% over temperature. The UCC381-ADJ version has a regu-

lated output voltage programmed by an external user-definable resistor ra-

tio.

• Logic Shutdown Capability

• Short Circuit Power Limit of

3% • V • Current Limit

• Remote Load Voltage for Accurate

Load Regulation

(continued)

BLOCK DIAGRAM

VIN

VOUT

PUMP

VOUTS

VOLTAGE

AMPLIFIER

CURRENT

LIMIT

–

1.3/2.1A

CURRENT

REFERENCE

GND

1.25V

SHUTDOWN FOR FIXED VERSIONS

CT*

0.65V

3% DUTY CYCLE

CURRENT LIMIT TIMER

*ADJ

VERSION

ONLY

OPEN

50k

REVERSE VOLTAGE

SENSE

UCC381-ADJ

UCC381-3

UCC381-5

UVLO

82k

150k

THERMAL

SHUTDOWN

50k

UDG-98112

SLUS214B -JANUARY 2001

12 3 4 5 6 7...10

中文翻译

下载PDF

与UCC281相关器件

型号	品牌	获取价格	描述	数据表
UCC281-	TI	获取价格	Low Dropout 1 Ampere Linear Regulator Family
UCC2810	TI	获取价格	DUAL CHANNEL SYNCHRONIZED CURRENT-MODE PWM
UCC2810_10	TI	获取价格	DUAL CHANNEL SYNCHRONIZED CURRENT-MODE PWM
UCC2810DW	TI	获取价格	DUAL CHANNEL SYNCHRONIZED CURRENT-MODE PWM
UCC2810DW	ROCHESTER	获取价格	1A DUAL SWITCHING CONTROLLER, 1100kHz SWITCHING FREQ-MAX, PDSO16, SOIC-16
UCC2810DWG4	TI	获取价格	温度范围为 -40°C 至 85°C 的双通道同步电流模式 PWM \| DW \| 16 \|
UCC2810DWR	TI	获取价格	1A DUAL SWITCHING CONTROLLER, 1100kHz SWITCHING FREQ-MAX, PDSO16, SOIC-16
UCC2810DWTR	TI	获取价格	DUAL CHANNEL SYNCHRONIZED CURRENT-MODE PWM
UCC2810DWTRG4	TI	获取价格	温度范围为 -40°C 至 85°C 的双通道同步电流模式 PWM \| DW \| 16 \|
UCC2810J	TI	获取价格	1A DUAL SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, CDIP16, CERAMIC, DIP-16

与UCC281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

38
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

30
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

58
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

54

产品中心

服务支持

精选活动

关于我们

帮助中心

UCC281

UCC281 数据手册

与UCC281相关器件

与UCC281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

UCC281

UCC281 数据手册

与UCC281相关器件

与UCC281相关文章

您还可以找

您在本页遇到什么问题？