UC1845A-SP

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

現行

50% 工作週期、抗輻射 QMLV、30-V 輸入、1-A 單輸出 500-kHz PWM 控制器

立即訂購

產品規格表

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

UC1845A-SP

現行

產品規格表

立即訂購

產品詳細資料

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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	類型	標題		日期
*	Data sheet	UC1845A-SP QML class V, radiation hardened current-mode PWM controller datasheet (Rev. A)	PDF \| HTML	2019年 2月 21日
*	Radiation & reliability report	UC1845A-SP Neutron Displacement Damage Characterization Test Report		2021年 5月 5日
*	SMD	UC1845A-SP SMD 5962-86704		2016年 7月 8日
*	Radiation & reliability report	UC1845A-SP TID Radiation Test Report		2015年 5月 19日
	More literature	TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A)		2023年 8月 31日
	Application note	QML flow, its importance, and obtaining lot information (Rev. C)		2023年 8月 30日
	Application note	Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. A)	PDF \| HTML	2022年 11月 17日
	Application note	Single-Event Effects Confidence Interval Calculations (Rev. A)	PDF \| HTML	2022年 10月 19日
	Selection guide	TI Space Products (Rev. I)		2022年 3月 3日
	Application brief	Controlling Input Power for Present and Next-Generation Power Controllers	PDF \| HTML	2020年 12月 14日
	Application note	DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer		2020年 8月 21日
	Application note	Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form	PDF \| HTML	2020年 5月 18日
	E-book	Radiation Handbook for Electronics (Rev. A)		2019年 5月 21日
	Technical article	Power Tips: Calculate an R-C snubber in seven steps	PDF \| HTML	2016年 5月 5日