UC1843A-SP

AKTIV

Radiation-tolerant, QML-V, enhanced 30V input, 1A 500kHz PWM controller, 100% duty cycle

Jetzt bestellen

Datenblatt

document-pdfAcrobat UC1843A-SP QML class V, radiation hardened current-mode PWM controller datasheet (Rev. A) (Englisch) PDF | HTML

UC1843A-SP

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Topology

Boost, Flyback, Forward

Control mode

Current

Features

Error amplifier, Multi-topology

Duty cycle (max) (%)

100

Topology

Boost, Flyback, Forward

Control mode

Current

Features

Error amplifier, Multi-topology

Duty cycle (max) (%)

100

CDIP (JG)

64.032 mm² (— mm × — mm)

LCCC (FK)

79.0321 mm² (— mm × — mm)

CFP (HKU)

45.4896 mm² (— mm × — mm)

QML Class V (QMLV) Qualified, SMD 5962-86704
5962P8670409Vxx:
- 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 but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
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 R_O Error Amplifier

QML Class V (QMLV) Qualified, SMD 5962-86704
5962P8670409Vxx:
- 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 but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
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 R_O Error Amplifier

The UC1843A-SP control IC is a radiation hardened pin-for-pin compatible 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 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

Andere AC/DC-Controller suchen

Herunterladen Video mit Transkript ansehen Video

Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	UC1843A-SP QML class V, radiation hardened current-mode PWM controller datasheet (Rev. A)	PDF \| HTML	21.02.2019
*	Strahlungs- und Zuverlässigkeitsbericht	UC1843A-SP NDD (Neutron Displacement Damage) Characterization		05.08.2021
*	Strahlungs- und Zuverlässigkeitsbericht	UC1843A-SP Radiation Test Report		11.05.2015
*	SMD	UC1843A-SP SMD 5962-86704		08.07.2016
	Auswahlhilfe	TI Space Products (Rev. L)		27.03.2026
	Anwendungshinweis	Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form (Rev. A)	PDF \| HTML	05.11.2025
	Application brief	DLA Approved Optimizations for QML Products (Rev. C)	PDF \| HTML	17.06.2025
	Anwendungshinweis	Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B)	PDF \| HTML	10.06.2025
	Weitere Dokumente	TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B)		20.02.2025
	Anwendungshinweis	QML flow, its importance, and obtaining lot information (Rev. C)		30.08.2023
	Anwendungshinweis	Single-Event Effects Confidence Interval Calculations (Rev. A)	PDF \| HTML	19.10.2022
	Application brief	Controlling Input Power for Present and Next-Generation Power Controllers	PDF \| HTML	14.12.2020
	Anwendungshinweis	DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer		21.08.2020
	E-book	Radiation Handbook for Electronics (Rev. A)		21.05.2019
	Technischer Artikel	Power Tips: Calculate an R-C snubber in seven steps	PDF \| HTML	05.05.2016
	Anwendungshinweis	UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers		07.02.2002
	Anwendungshinweis	DN-65 Considerations in Powering BiCMOS ICs		05.09.1999
	Anwendungshinweis	DN-27 UC1842/UC1842A Family - Summary of Functional Differences		05.09.1999
	Anwendungshinweis	DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit		05.09.1999
	Anwendungshinweis	DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty		05.09.1999
	Anwendungshinweis	DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection		05.09.1999
	Anwendungshinweis	U-111, Practical Considerations in Current Mode Power Supplies		05.09.1999
	Anwendungshinweis	U-100A UC3842/3/4/5 Provides Low-Cost Current-Mode Control		05.09.1999
	Anwendungshinweis	Modeling, Analysis and Compensation of the Current-Mode Converter		05.09.1999
	Anwendungshinweis	DN-30 Programmable Electronic Circuit Breaker		05.09.1999
	Anwendungshinweis	DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers		05.09.1999
	Anwendungshinweis	DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode		05.09.1999

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Simulationsmodell