TPS7H1101A-SP 1.5-V to 7-V Input, 3-A, Radiation-Hardened LDO Regulator |

TPS7H1101A-SP (ACTIVE) 1.5-V to 7-V Input, 3-A, Radiation-Hardened LDO Regulator



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.


  • 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)

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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Fixed output options (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Rating PSRR @ 100 KHz (dB) Accuracy (%) Vdo (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG) Radiation, SEL (MeV.cm2/mg) Radiation, TID (Typ) (krad)
TPS7H1101A-SP Order now Adjustable Output     3     7     1.5     6.65     0.8     0     CFP | 16     Enable
Soft Start
Power Good
Adjustable Current Limit
Current Sense    
1     -55 to 125
25 to 25    
75.4     20     Space     25     2     210     7     See datasheet (CFP)     85     100    
TPS7A4501-SP Samples not available Adjustable Output     1.5     20     2.3     20     1.21     0     CFP | 10     Enable
Reverse Current Protection    
1     -25 to 125
-55 to 125
25 to 25    
28     35     Space     38     3     270     1     See datasheet (CFP)     86     100