UC1845A-SP Datasheet | Texas Instruments

Features - 1 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 m A) - Trimmed Oscillator Discharge Current - Automatic Feed Forward pensation - 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-k Hz Operation - Low RO 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). Simplified Schematic VCC 7 Gnd 5 RT/CT 4 VFB 2 p 1 C/S 3 34 V UVLO S/R 5-V REF 2.5 V Osc VREF Good Logic Internal Bias Error Amplifier 2R S R 1V R PWM Latch Current Sense...