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UC1825A-SP Datasheet(PDF) 1 Page - Texas Instruments |
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UC1825A-SP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page UDG-02091 OSC PWM Latch Fault Latch (60%) E / A 1.2 V 1 V 0.2 V 5 V 1.25 V UVLO T Restart Delay Latch Restart Delay 4 5 6 7 3 2 1 8 9 15 10 16 12 14 11 13 CLK / LEB RAMP EAOUT NI INV SS Soft Start Complete ILIM GND PGND OUTB OUTA R R R S D S D S Current Limit Overcurrent 9.2 V / 8.4 V PWM Comparator Internal Bias 4 V 5.1 VREF VREF 5.1 V On / Off CT RT VCC VC VREF Good 9 A 250 A Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UC1825A-SP SLUS873B – JANUARY 2009 – REVISED OCTOBER 2015 UC1825A-SP Rad-Tolerant Class-V, High-Speed PWM Controller 1 Features 3 Description The UC1825A-SP PWM controller is an improved 1 • QML-V Qualified, SMD 5962-87681 version of the standard UC1825 family. Performance • Rad-Tolerant: 30 kRad (Si) TID (1) enhancements have been made to several of the • Compatible With Voltage-Mode or Current-Mode circuit blocks. Error amplifier gain bandwidth product Control Methods is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. • Practical Operation at Switching Frequencies Oscillator discharge current is specified at 10 mA for to 1 MHz accurate dead time control. Frequency accuracy is • 50-ns Propagation Delay to Output improved to 6%. Start-up supply current, typically • High-Current Dual Totem Pole Outputs 100 μA, is ideal for offline applications. The output (2-A Peak) drivers are redesigned to actively sink current during UVLO at no expense to the start-up current • Trimmed Oscillator Discharge Current specification. In addition each output is capable of • Low 100- μA Start-Up Current 2-A peak currents during transitions. • Pulse-by-Pulse Current Limiting Comparator Device Information(1) • Latched Overcurrent Comparator With Full Cycle PART NUMBER PACKAGE BODY SIZE (NOM) Restart UC1825A-SP CDIP (16) 19.56 mm × 6.92 mm 2 Applications (1) For all available packages, see the orderable addendum at the end of the data sheet. • DC-DC Converters • Supports Various Topologies: – Push-Pull – Forward – Half-Bridge – Full-Bridge (1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details. Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
Número de pieza similar - UC1825A-SP_15 |
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Descripción similar - UC1825A-SP_15 |
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