UC1845A-SP

Name: UC1845A-SP
Brand: TI
SKU: UC1845A-SP
Price: 264.422 USD

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Controlador PWM QMLV con tolerancia a la radiación, entrada de 30 V, 1 A, salida única de 500 kHz, c

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

UC1845A-SP

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Detalles del producto

Vin (max) (V)

25

Operating temperature range (°C)

-55 to 125

Control mode

Current

Topology

Boost, Flyback, Forward

Rating

Space

Duty cycle (max) (%)

50

Vin (max) (V)

25

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

CFP (HKU)

10

45.4896 mm² 7.02 x 6.48

LCCC (FK)

20

79.0321 mm² 8.89 x 8.89

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.

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Documentación técnica

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Ver todo 14

	Tipo	Título		Fecha
*	Data sheet	UC1845A-SP QML class V, radiation hardened current-mode PWM controller datasheet (Rev. A)	PDF \| HTML	21 feb 2019
*	Radiation & reliability report	UC1845A-SP Neutron Displacement Damage Characterization Test Report		05 may 2021
*	SMD	UC1845A-SP SMD 5962-86704		08 jul 2016
*	Radiation & reliability report	UC1845A-SP TID Radiation Test Report		19 may 2015
	More literature	TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A)		31 ago 2023
	Application note	QML flow, its importance, and obtaining lot information (Rev. C)		30 ago 2023
	Application note	Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. A)	PDF \| HTML	17 nov 2022
	Application note	Single-Event Effects Confidence Interval Calculations (Rev. A)	PDF \| HTML	19 oct 2022
	Selection guide	TI Space Products (Rev. I)		03 mar 2022
	Application brief	Controlling Input Power for Present and Next-Generation Power Controllers	PDF \| HTML	14 dic 2020
	Application note	DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer		21 ago 2020
	Application note	Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form	PDF \| HTML	18 may 2020
	E-book	Radiation Handbook for Electronics (Rev. A)		21 may 2019
	Technical article	Power Tips: Calculate an R-C snubber in seven steps	PDF \| HTML	05 may 2016

Diseño y desarrollo

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