홈 전원 관리 AC/DC & DC/DC controllers (external FET)
홈
전원 관리
AC/DC & DC/DC controllers (external FET)

UC1844A-SP

활성

우주 등급 QMLV, 향상된 30V 입력, 1A 단일 출력 500kHz PWM 컨트롤러, 50% 듀티 사이클

지금 주문
데이터시트

UC1844A-SP

활성
데이터시트 지금 주문

제품 상세 정보

Vin (max) (V) 30 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward Rating Space Duty cycle (max) (%) 50
Vin (max) (V) 30 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward Rating Space Duty cycle (max) (%) 50
CDIP (JG) 8 64.032 mm² 9.6 x 6.67
  • QML Class V (QMLV) Qualified, SMD 5962-86704
  • Rad-Tolerant: 30-krad(Si) TID (1) (2)
  • Optimized for Offline and DC-to-DC Converters
  • Low Start-Up Current (< 0.5 mA)
  • Trimmed Oscillator Discharge Current
  • Automatic Feed Forward Compensation
  • Pulse-by-Pulse Current Limiting
  • Enhanced Load Response Characteristics
  • Undervoltage Lockout (UVLO) With Hysteresis
  • Double-Pulse Suppression
  • High-Current Totem-Pole Output
  • Internally-Trimmed Bandgap Reference
  • 500-kHz Operation
  • Low RO Error Amplifier

(1)The LDR improved die is only available in the UC1843A-SP (orderable as 5962-8670409VPA). Contact factory to request an LDR-improved version of the UC1842A-SP or UC1844A-SP.

(2)Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad(Si)/s. Radiation lot acceptance testing is available - contact factory for details.
  • QML Class V (QMLV) Qualified, SMD 5962-86704
  • Rad-Tolerant: 30-krad(Si) TID (1) (2)
  • Optimized for Offline and DC-to-DC Converters
  • Low Start-Up Current (< 0.5 mA)
  • Trimmed Oscillator Discharge Current
  • Automatic Feed Forward Compensation
  • Pulse-by-Pulse Current Limiting
  • Enhanced Load Response Characteristics
  • Undervoltage Lockout (UVLO) With Hysteresis
  • Double-Pulse Suppression
  • High-Current Totem-Pole Output
  • Internally-Trimmed Bandgap Reference
  • 500-kHz Operation
  • Low RO Error Amplifier

(1)The LDR improved die is only available in the UC1843A-SP (orderable as 5962-8670409VPA). Contact factory to request an LDR-improved version of the UC1842A-SP or UC1844A-SP.

(2)Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad(Si)/s. Radiation lot acceptance testing is available - contact factory for details.

The UC184xA-SP family of control ICs is a pin-for-pin compatible improved version of the UC184x family. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

The Device Comparison Table shows the difference between members of this family. Reference the individual product data sheets for ordering the radiation-improved version if available.

The UC184xA-SP family of control ICs is a pin-for-pin compatible improved version of the UC184x family. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

The Device Comparison Table shows the difference between members of this family. Reference the individual product data sheets for ordering the radiation-improved version if available.
open-in-new 기타 AC/DC & DC/DC controllers (external FET) 찾기
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
TPS7H5001-SP 활성 방사능 저항 동기 정류를 지원하는 QMLV 및 QMLP 2MHz, 듀얼 출력 PWM 컨트롤러 More feature rich QML-qualified radiation-hardened PWM controller family
TPS7H5005-SEP 활성 동기 정류를 지원하는 방사능 내성, 2MHz, 듀얼 출력 PWM 컨트롤러 More feature rich radiation-tolerant PWM controller family for LEO or shorter duration missions

기술 문서

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모두 보기24
유형 직함 날짜
* Data sheet UC184xA-SP QML class V, current-mode PWM controller datasheet (Rev. E) PDF | HTML 2019/02/22
* SMD UC1844A-SP SMD 5962-86704 2016/07/08
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 2023/08/31
Application note QML flow, its importance, and obtaining lot information (Rev. C) 2023/08/30
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. A) PDF | HTML 2022/11/17
Application note Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 2022/10/19
Selection guide TI Space Products (Rev. I) 2022/03/03
Application brief Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 2020/12/14
Application note DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020/08/21
Application note Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form PDF | HTML 2020/05/18
E-book Radiation Handbook for Electronics (Rev. A) 2019/05/21
Technical article Power Tips: Calculate an R-C snubber in seven steps PDF | HTML 2016/05/05
Application note UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers 2002/02/07
Application note DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit 1999/09/05
Application note DN-27 UC1842/UC1842A Family - Summary of Functional Differences 1999/09/05
Application note DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection 1999/09/05
Application note DN-30 Programmable Electronic Circuit Breaker 1999/09/05
Application note DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty 1999/09/05
Application note DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode 1999/09/05
Application note DN-65 Considerations in Powering BiCMOS ICs 1999/09/05
Application note DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers 1999/09/05
Application note Modeling, Analysis and Compensation of the Current-Mode Converter 1999/09/05
Application note U-100A UC3842/3/4/5 Provides Low-Cost Current-Mode Control 1999/09/05
Application note U-111, Practical Considerations in Current Mode Power Supplies 1999/09/05

설계 및 개발

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패키지 핀 다운로드
CDIP (JG) 8 옵션 보기
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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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포럼 주제 모두 보기(영문)

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