UC1845A-SP

활성

Radiation-tolerant, QML-V, 30V input, 1A single-output 500kHz PWM controller, 50% duty cycle

지금 주문하기

데이터 시트

document-pdfAcrobat UC1845A-SP QML class V, radiation hardened current-mode PWM controller datasheet (Rev. A) (영어) PDF | HTML

UC1845A-SP

활성

데이터 시트

지금 주문하기

제품 상세 정보

Topology

Boost, Flyback, Forward

Control mode

Current

Features

Error amplifier, Fixed frequency, Multi-topology

Duty cycle (max) (%)

50

Topology

Boost, Flyback, Forward

Control mode

Current

Features

Error amplifier, Fixed frequency, Multi-topology

Duty cycle (max) (%)

50

CDIP (JG)

8

64.032 mm² (— mm × — mm)

LCCC (FK)

20

79.0321 mm² (— mm × — mm)

CFP (HKU)

10

45.4896 mm² (— mm × — mm)

QML Class V (QMLV) Qualified, SMD 5962-86704
5962P8670411Vxx: ⁽¹⁾
- Radiation Hardness Assurance (RHA) up to
  30-krad(Si) Total Ionizing Dose (TID)
- Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
- Exhibits Low Dose Rate Sensitivity ⁽²⁾ but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
Optimized for DC-to-DC Converter Applications
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 R_O Error Amplifier
Qualified Over the Military Temperature Range (–55°C to 125°C)

⁽¹⁾Improved TID radiation performance only applies to RHA device type 11.

⁽²⁾The affected parameter Reference Output Voltage, VREF Radiation Drift Curve (see VREF Radiation Drift Curve).

QML Class V (QMLV) Qualified, SMD 5962-86704
5962P8670411Vxx: ⁽¹⁾
- Radiation Hardness Assurance (RHA) up to
  30-krad(Si) Total Ionizing Dose (TID)
- Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
- Exhibits Low Dose Rate Sensitivity ⁽²⁾ but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
Optimized for DC-to-DC Converter Applications
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 R_O Error Amplifier
Qualified Over the Military Temperature Range (–55°C to 125°C)

⁽¹⁾Improved TID radiation performance only applies to RHA device type 11.

⁽²⁾The affected parameter Reference Output Voltage, VREF Radiation Drift Curve (see VREF Radiation Drift Curve).

The UC1845A-SP control IC is a radiation hardened pin-for-pin compatible version of the UC184x family. It is primarily suited for Satellites and other harsh environment applications. 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 V_CC 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 UC1845A-SP control IC is a radiation hardened pin-for-pin compatible version of the UC184x family. It is primarily suited for Satellites and other harsh environment applications. 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 V_CC 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.

filter

기타 AC/DC 컨트롤러 찾기

다운로드 스크립트와 함께 비디오 보기 비디오

관심 가지실만한 유사 제품

open-in-new

대안 비교

비교 대상 장치와 유사한 기능.

신규 TPS7H5020-SEP

활성

Radiation-tolerant, 100% duty cycle PWM controller for driving MOSFETs or GaN FETs More feature rich radiation-tolerant PWM controller family for LEO or shorter duration missions

기술 자료

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15개 모두 보기

상위 문서	유형	직함	형식 옵션	날짜
*	데이터 시트	UC1845A-SP QML class V, radiation hardened current-mode PWM controller datasheet (Rev. A)	PDF \| HTML	2019. 2. 21
*	방사능 및 안정성 보고서	UC1845A-SP Neutron Displacement Damage Characterization Test Report		2021. 5. 5
*	방사능 및 안정성 보고서	UC1845A-SP TID Radiation Test Report		2015. 5. 19
*	SMD	UC1845A-SP SMD 5962-86704		2016. 7. 8
	선택 가이드	TI Space Products (Rev. L)		2026. 3. 27
	애플리케이션 노트	Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form (Rev. A)	PDF \| HTML	2025. 11. 5
	Application brief	DLA Approved Optimizations for QML Products (Rev. C)	PDF \| HTML	2025. 6. 17
	애플리케이션 노트	Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B)	PDF \| HTML	2025. 6. 10
	추가 자료	TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B)		2025. 2. 20
	애플리케이션 노트	QML flow, its importance, and obtaining lot information (Rev. C)		2023. 8. 30
	애플리케이션 노트	Single-Event Effects Confidence Interval Calculations (Rev. A)	PDF \| HTML	2022. 10. 19
	Application brief	Controlling Input Power for Present and Next-Generation Power Controllers	PDF \| HTML	2020. 12. 14
	애플리케이션 노트	DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer		2020. 8. 21
	e북	Radiation Handbook for Electronics (Rev. A)		2019. 5. 21
	기술 문서	Power Tips: Calculate an R-C snubber in seven steps	PDF \| HTML	2016. 5. 5