5962-8768105 Series
Radiation-tolerant QMLV, 30-V input, 2-A dual-output 1-MHz PWM controller
Manufacturer: Texas Instruments
Catalog(1 parts)
| Part | Operating Temperature▲▼ | Operating Temperature▲▼ | Function | Mounting Type | Supplier Device Package | Output Type | Number of Outputs▲▼ | Frequency - Switching▲▼ | Output Phases▲▼ | Control Features | Output Configuration | Package / Case | Duty Cycle (Max)▲▼ | Topology | Synchronous Rectifier▲▼ | Clock Sync▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments 5962-8768105VEABuck Regulator Positive Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 16-CDIP | -55 °C | 125 °C | Step-Up, Step-Up/Step-Down | Through Hole | 16-CDIP | Transistor Driver | 2 ul | 1000000 Hz | 1 ul | Current Limit, Enable, Frequency Control, Overcurrent, Ramp, Soft Start | Positive | 16-CDIP (0.300", 7.62mm) | 0.5 ul | Buck |
Key Features
• QML-V Qualified, SMD 5962-876815962P8768105Vxx: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.bExhibits Low Dose Rate Sensitivity but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019Compatible With Voltage-Mode or Current-Mode Control MethodsPractical Operation at Switching Frequencies to 1 MHz50-ns Propagation Delay to OutputHigh-Current Dual Totem Pole Outputs (2-A Peak)Trimmed Oscillator Discharge CurrentLow 100-µA Start-Up CurrentPulse-by-Pulse Current Limiting ComparatorLatched Overcurrent Comparator With Full Cycle RestartQualified Over the Military Temperature Range (–55°C to 125°C)QML-V Qualified, SMD 5962-876815962P8768105Vxx: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.bExhibits Low Dose Rate Sensitivity but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019Compatible With Voltage-Mode or Current-Mode Control MethodsPractical Operation at Switching Frequencies to 1 MHz50-ns Propagation Delay to OutputHigh-Current Dual Totem Pole Outputs (2-A Peak)Trimmed Oscillator Discharge CurrentLow 100-µA Start-Up CurrentPulse-by-Pulse Current Limiting ComparatorLatched Overcurrent Comparator With Full Cycle RestartQualified Over the Military Temperature Range (–55°C to 125°C)
Description
AI
The UC1825A-SP PWM controller is a radiation hardened version of the standard UC1825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Start-up supply current, typically 100 µA, is ideal for offline applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the start-up current specification. In addition each output is capable of 2-A peak currents during transitions.
Functional improvements have also been implemented in this device family. The UC1825 shutdown comparator is now a high-speed overcurrent comparator with a threshold of 1.2 V. The overcurrent comparator sets a latch that ensures full discharge of the soft-start capacitor before allowing a restart. While the fault latch is set, the outputs are in the low state. In the event of continuous faults, the soft-start capacitor is fully charged before discharge to insure that the fault frequency does not exceed the designed soft start period. The UC1825 CLOCK pin has become CLK/LEB. This pin combines the functions of clock output and leading edge blanking adjustment and has been buffered for easier interfacing.
The UC1825A-SP has dual alternating outputs and the same pin configuration of the UC1825. The UC1825A-SP version parts have UVLO thresholds identical to the original UC1825.
The UC1825A-SP PWM controller is a radiation hardened version of the standard UC1825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Start-up supply current, typically 100 µA, is ideal for offline applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the start-up current specification. In addition each output is capable of 2-A peak currents during transitions.
Functional improvements have also been implemented in this device family. The UC1825 shutdown comparator is now a high-speed overcurrent comparator with a threshold of 1.2 V. The overcurrent comparator sets a latch that ensures full discharge of the soft-start capacitor before allowing a restart. While the fault latch is set, the outputs are in the low state. In the event of continuous faults, the soft-start capacitor is fully charged before discharge to insure that the fault frequency does not exceed the designed soft start period. The UC1825 CLOCK pin has become CLK/LEB. This pin combines the functions of clock output and leading edge blanking adjustment and has been buffered for easier interfacing.
The UC1825A-SP has dual alternating outputs and the same pin configuration of the UC1825. The UC1825A-SP version parts have UVLO thresholds identical to the original UC1825.