Description
The TPS7H1101A-SP is an improved version of the TPS7H1101-SP allowing the use of the enable feature across the entire input voltage range. It is a radiation-hardened LDO linear regulator that uses a PMOS pass element configuration. It operates over a wide range of input voltage, from 1.5 V to 7 V while offering excellent PSRR. The TPS7H1101A-SP features a precise and programmable foldback current limit implementation with a very-wide adjustment range. To support the complex power requirements of FPGAs, DSPs, or microcontrollers, the TPS7H1101A-SP provides enable on and off functionality, programmable soft start, current sharing capability, and a Power Good open-drain output.

Features
• 5962R13202:
   – Radiation Hardness Assurance (RHA): Up to
      TID 100 krad (Si)
   – Total Ionizing Dose: 100 krad (Si)
   – ELDRS-Free: 100 krad (Si)
   – Dose Rate: 10 mrad (Si)/s
   – Single Event Latchup (SEL) Immune to
      LET = 85 MeV-cm2/mg
   – SEB and SEGR Immune to
      LET = 85 MeV-cm2/mg
   – SET/SEFI Onset Threshold > 40 MeV-cm2/mg,
      See Radiation Report (SNAA257) for Details
   – Specifically Designed to Always Upset Low
      to Avoid Damage to Critical Downstream
      Component
   – SET/SEFI Cross-Section Plot, See Radiation
      Report (SNAA257) for Details
• Ultra-Low VIN Range: 1.5 V to 7 V
• 3-A Maximum Output Current
• Current Share/Parallel Operation to Provide up to
   6-A Output Current
• Stable With Ceramic Output Capacitor
• ±2% Accuracy Over Line, Load, and Temperature
• Programmable Soft Start Through External
   Capacitor
• Input Enable Across All Input Voltages and Power
   Good Output for Power Sequencing
• Ultra-Low Dropout LDO Voltage:
   62 mV at 1 A (25°C), VOUT = 1.8 V
• Low Noise:
   20.33 µVRMS, VIN = 2 V, VOUT = 1.8 V at 3 A
• PSRR: Over 45 dB at 1 kHz
• Excellent Load/Line Transient Response
• Foldback Current Limit
• See the Tools & Software Tab
• Thermally-Enhanced CFP Package (0.6°C/W RθJC)

Applications
• Space Satellite Point of Load Supply for FPGAs,
   Microcontrollers, ASICs, and Data Converters
• Space Satellite Payloads
• Radiation-Hardened Low-Noise Linear Regulator
   Power Supply for RF, VCOs, Receivers, and
   Amplifiers
• Clean Analog Supply Requirements
• Available in Military (–55°C to 125°C)
   Temperature Range
• Engineering Evaluation (/EM) Samples are
   Available(1)