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TPS7H1121-SEP

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Radiation-tolerant, 2.25V to 14V input, 2A low-dropout (LDO) regulator

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Data sheet

TPS7H1121-SEP

PREVIEW
Data sheet Order now

Product details

Rating Space Vin (max) (V) 14 Vin (min) (V) 2.25 Iout (max) (A) 2 Output options Adjustable Output Vout (max) (V) 13.2 Vout (min) (V) 0.6 Noise (µVrms) 4 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 30.5 Load capacitance (min) (µF) 6.8 Regulated outputs (#) 1 Features Adjustable current limit, Enable, Power good, Soft start Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 400 Operating temperature range (°C) -55 to 125 Radiation, SEL (MeV·cm2/mg) 43 Radiation, TID (typ) (krad) 50
Rating Space Vin (max) (V) 14 Vin (min) (V) 2.25 Iout (max) (A) 2 Output options Adjustable Output Vout (max) (V) 13.2 Vout (min) (V) 0.6 Noise (µVrms) 4 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 30.5 Load capacitance (min) (µF) 6.8 Regulated outputs (#) 1 Features Adjustable current limit, Enable, Power good, Soft start Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 400 Operating temperature range (°C) -55 to 125 Radiation, SEL (MeV·cm2/mg) 43 Radiation, TID (typ) (krad) 50
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4
  • Total Ionizing Dose radiation characterized:

    • Radiation hardness assurance (RHA) availability of 100krad(Si) or 50krad(Si)

  • Single-Event Effects (SEE) Characterized
    • Single-event latch-up (SEL), single-event burnout (SEB), and single-event gate rupture (SEGR) immune to linear energy transfer (LET) = 75MeV-cm2/mg
    • Single-event functional interrupt (SEFI) characterized to LET = 75MeV-cm2/mg
    • Single-event transient (SET) characterized to LET = 75MeV-cm2/mg
  • Wide VIN range: 2.25V to 14V
  • 2A maximum output current
  • ±1.5% accuracy VIN > 3V over load, and temperature
  • ±1.8% accuracy VIN < 3V over load, and temperature
  • Soft start (SS) control through an external capacitor
  • Open-drain power good (PG) output for power sequencing
  • Programmable current limit through an external resistor (CL)
  • Optional external control loop compensation utilizing the STAB pin
  • Excellent load and line transient response
  • Plastic packages out gas tested per ASTM E595
  • Military (–55°C to 125°C) temperature range
  • Total Ionizing Dose radiation characterized:

    • Radiation hardness assurance (RHA) availability of 100krad(Si) or 50krad(Si)

  • Single-Event Effects (SEE) Characterized
    • Single-event latch-up (SEL), single-event burnout (SEB), and single-event gate rupture (SEGR) immune to linear energy transfer (LET) = 75MeV-cm2/mg
    • Single-event functional interrupt (SEFI) characterized to LET = 75MeV-cm2/mg
    • Single-event transient (SET) characterized to LET = 75MeV-cm2/mg
  • Wide VIN range: 2.25V to 14V
  • 2A maximum output current
  • ±1.5% accuracy VIN > 3V over load, and temperature
  • ±1.8% accuracy VIN < 3V over load, and temperature
  • Soft start (SS) control through an external capacitor
  • Open-drain power good (PG) output for power sequencing
  • Programmable current limit through an external resistor (CL)
  • Optional external control loop compensation utilizing the STAB pin
  • Excellent load and line transient response
  • Plastic packages out gas tested per ASTM E595
  • Military (–55°C to 125°C) temperature range

The TPS7H1121 is a radiation-hardened, low dropout linear regulator (LDO) which operates over a wide input voltage range and is optimized for powering devices in a space environment. The device is capable of sourcing up to 2A over a 2.25V to 14V input.

The device offers excellent stability and features a programmable current limit with a wide adjustment range. To support the complex power requirements of FPGAs, DSPs, and microcontrollers, the TPS7H1121 provides enable on and off functionality, programmable soft start, and a power good open-drain output.

The TPS7H1121 is a radiation-hardened, low dropout linear regulator (LDO) which operates over a wide input voltage range and is optimized for powering devices in a space environment. The device is capable of sourcing up to 2A over a 2.25V to 14V input.

The device offers excellent stability and features a programmable current limit with a wide adjustment range. To support the complex power requirements of FPGAs, DSPs, and microcontrollers, the TPS7H1121 provides enable on and off functionality, programmable soft start, and a power good open-drain output.
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Technical documentation

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Type Title Date
* Data sheet TPS7H1121-SP 2.25V to 14V Input, 2A, Radiation Hardened Low Dropout (LDO) Linear Regulator datasheet (Rev. B) 26 Jun 2025
* Radiation & reliability report TPS7H1121-SP Total Ionizing Dose (TID) Radiation Report PDF | HTML 19 Sep 2024
EVM User's guide TPS7H1121-SEP Evaluation Module User's Guide PDF | HTML 24 Jun 2025
Certificate TPS7H1121EVM EU Declaration of Conformity (DoC) 12 Jun 2025

Design & development

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Evaluation board

TPS7H1121EVM — TPS7H1121-SEP and QMLP evaluation module for 2.25V to 14V input, 2A low-dropout (LDO) regulator

The TPS7H1121EVM demonstrates the operation of a single TPS7H1121-SEP LDO regulator (plastic package). The board provides footprints that can be populated with additional components to allow for testing of customized configurations, as well as test points and SMA connectors for easy performance (...)

User guide: PDF | HTML
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Simulation model

TPS7H1121-SP PSpice Model

SLVME97.ZIP (36 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 24 Ultra Librarian
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