홈 전원 관리 선형 및 저손실(LDO) 레귤레이터
홈
전원 관리
선형 및 저손실(LDO) 레귤레이터

UCC383

활성

0°C~+70°C의 역전류 방지 기능을 지원하는 3A, 9V, 초저손실 전압 레귤레이터

지금 주문
데이터시트

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
LM1085 활성 3A, 29V, 선형 전압 레귤레이터 Alternative product with wider input and output voltage range and lower noise
TPS7A84A 활성 전원 양호를 지원하는 3A, 낮은 VIN(1.1V), 저잡음, 고정밀, 초저손실 전압 레귤레이터 Alternative product with ultra-low-noise performance, higher accuracy and lower dropout voltage

UCC383

활성
데이터시트 지금 주문

제품 상세 정보

Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 9 Vin (min) (V) 2.8 Vout (max) (V) 8.5 Vout (min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Iq (typ) (mA) 0.4 Thermal resistance θJA (°C/W) 70 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Reverse Current Protection Accuracy (%) 2.5 PSRR at 100 KHz (dB) 18 Dropout voltage (Vdo) (typ) (mV) 400 Operating temperature range (°C) 0 to 70
Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 9 Vin (min) (V) 2.8 Vout (max) (V) 8.5 Vout (min) (V) 1.2 Fixed output options (V) 3, 3.3, 5 Iq (typ) (mA) 0.4 Thermal resistance θJA (°C/W) 70 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Reverse Current Protection Accuracy (%) 2.5 PSRR at 100 KHz (dB) 18 Dropout voltage (Vdo) (typ) (mV) 400 Operating temperature range (°C) 0 to 70
TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-263 (KTT) 3 154.8384 mm² 10.16 x 15.24 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Precision Positive Linear Series Pass Voltage Regulation
  • 0.45 V Dropout at 3 A
  • 50 mV Dropout at 10 mA
  • Quiescent Current Under 650 µA Irrespective of Load
  • Adjustable (5-Lead) Output Voltage Version
  • Fixed (3-Lead) Versions for 3.3-V and 5-V Outputs
  • Logic Shutdown Capability
  • Short-Circuit Power Limit of (3% × VIN × ISHORT)
  • Low VOUT to VIN Reverse Leakage
  • Thermal Shutdown

All trademarks are the property of their respective owners.
  • Precision Positive Linear Series Pass Voltage Regulation
  • 0.45 V Dropout at 3 A
  • 50 mV Dropout at 10 mA
  • Quiescent Current Under 650 µA Irrespective of Load
  • Adjustable (5-Lead) Output Voltage Version
  • Fixed (3-Lead) Versions for 3.3-V and 5-V Outputs
  • Logic Shutdown Capability
  • Short-Circuit Power Limit of (3% × VIN × ISHORT)
  • Low VOUT to VIN Reverse Leakage
  • Thermal Shutdown

All trademarks are the property of their respective owners.

The UCC283–3/–5/–ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the UCC283–5 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout).

These regulators include reverse voltage sensing that prevents current in the reverse direction. Quiescent current is always less than 650 µA. These devices have been internally compensated in such a way that the need for a minimum output capacitor has been eliminated.

UCC283–3 and UCC283–5 versions are in 3-lead packages and have preset outputs at 3.3 V and 5.0 V respectively. The output voltage is regulated to 1.5% at room temperature. The UCC283–ADJ version, in a 5-lead package, regulates the output voltage programmed by an external resistor ratio.

Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a tON time delay. The device then stays off for a period, tOFF, that is 32 times the tON delay. The device then begins pulsing on and off at the tON/(tON +tOFF) duty cycle of 3%. This drastically reduces the power dissipation during short-circuit and means heat sinks need only accommodate normal operation. On the 3-leaded versions of the device tON is fixed at 750 µs, on the adjustable 5-leaded versions an external capacitor sets the on time. The off time is always 32 × tON. The external timing control pin, CT, on the 5-leaded versions also serves as a shutdown input when pulled low.

Internal power dissipation is further controlled with thermal overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 165°C. The chip remains off until the temperature has dropped 20°C.

The UCC283 series is specified for operation over the industrial range of –40°C to 85°C, and the UCC383 series is specified from 0°C to 70°C. These devices are available in 3- and 5-pin TO–220 and TO–263 power packages.

The UCC283–3/–5/–ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the UCC283–5 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout).

These regulators include reverse voltage sensing that prevents current in the reverse direction. Quiescent current is always less than 650 µA. These devices have been internally compensated in such a way that the need for a minimum output capacitor has been eliminated.

UCC283–3 and UCC283–5 versions are in 3-lead packages and have preset outputs at 3.3 V and 5.0 V respectively. The output voltage is regulated to 1.5% at room temperature. The UCC283–ADJ version, in a 5-lead package, regulates the output voltage programmed by an external resistor ratio.

Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a tON time delay. The device then stays off for a period, tOFF, that is 32 times the tON delay. The device then begins pulsing on and off at the tON/(tON +tOFF) duty cycle of 3%. This drastically reduces the power dissipation during short-circuit and means heat sinks need only accommodate normal operation. On the 3-leaded versions of the device tON is fixed at 750 µs, on the adjustable 5-leaded versions an external capacitor sets the on time. The off time is always 32 × tON. The external timing control pin, CT, on the 5-leaded versions also serves as a shutdown input when pulled low.

Internal power dissipation is further controlled with thermal overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 165°C. The chip remains off until the temperature has dropped 20°C.

The UCC283 series is specified for operation over the industrial range of –40°C to 85°C, and the UCC383 series is specified from 0°C to 70°C. These devices are available in 3- and 5-pin TO–220 and TO–263 power packages.
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기술 문서

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모두 보기6
유형 직함 날짜
* Data sheet UCC283-x, UCC383-x: Low-Dropout 3-A Linear Regulator Family datasheet (Rev. B) 2004/02/23
Application note LDO Noise Demystified (Rev. B) PDF | HTML 2020/08/18
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017/08/09
User guide DEM-TO263LDO Demonstration Fixture 2003/10/15
Application note High Current LDO Linear Reglators (UCCx81-ADJ, UCx82-ADJ, UCCx83-ADJ, UCx85-AD 2002/05/07
Application note Using LDOs and Power Managers in Systems with Redundant Power Supplies 2000/11/29

설계 및 개발

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패키지 핀 다운로드
TO-220 (KC) 5 옵션 보기
TO-263 (KTT) 3 옵션 보기
TO-263 (KTT) 5 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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