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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

ACTIVE
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 Fixed output options (V) 0 Noise (µVrms) 4 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 10 Features Adjustable current limit, Enable, Power good, Soft start Thermal resistance θJA (°C/W) 30.5 Load capacitance (min) (µF) 6.8 Regulated outputs (#) 1 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 Fixed output options (V) 0 Noise (µVrms) 4 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 10 Features Adjustable current limit, Enable, Power good, Soft start Thermal resistance θJA (°C/W) 30.5 Load capacitance (min) (µF) 6.8 Regulated outputs (#) 1 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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Top documentation Type Title Format options Date
* Data sheet TPS7H1121-SP and TPS7H1121-SEP 2.25V to 14V Input, 2A, Radiation Hardened Low Dropout (LDO) Linear Regulator datasheet (Rev. C) PDF | HTML 03 Nov 2025
* VID TPS7H1121-SEP VID TPS7H1121-SEP VID V62/23604 04 Mar 2026
* Radiation & reliability report TPS7H1121-SP Total Ionizing Dose (TID) Radiation Report (Rev. A) 13 Feb 2026
* Radiation & reliability report TPS7H1121-SEP Neutron Displacement Damage (NDD) Characterization 05 Dec 2025
* Radiation & reliability report TPS7H1121-SEP Production Flow and Reliability Report (Rev. A) PDF | HTML 31 Oct 2025
* Radiation & reliability report TPS7H1121-SEP Total Ionizing Dose (TID) Radiation Report 16 Oct 2025
* Radiation & reliability report TPS7H1121-SEP Single-Event Effects (SEE) PDF | HTML 15 Oct 2025
Application note Highly Scalable Space Motor Control Platform based on TI’s Space Enhanced Products (-SEP) and Space Products PDF | HTML 08 Jun 2026
Selection guide TI Space Products (Rev. L) 27 Mar 2026
Certificate TPS7H1121EVM EU Declaration of Conformity (DoC) 12 Jun 2025
Technical article 航太級強化產品如何因應低地球軌道應用的挑戰 (Rev. A) PDF | HTML 11 Jan 2024
Technical article 우주 항공 강화 제품이 저지구 궤도 애플리케이션의 과제를 해결하는 방법 (Rev. A) PDF | HTML 11 Jan 2024
Technical article How Space Enhanced Products Address Challenges in low Earth orbit Applications (Rev. A) PDF | HTML 18 Dec 2023
Application note Reduce the Risk in Low-Earth Orbit Missions with Space Enhanced Plastic Products (Rev. A) PDF | HTML 15 Sep 2022
E-book Radiation Handbook for Electronics (Rev. A) 21 May 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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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Reference designs

TIDA-011004 — Space-grade 3U VPX power supply module reference design

This reference design is a space-grade power supply module compliant with the VITA-62 standard for space-rated 3U VPX architectures. The Space VPX standard enables standardization and interoperability by defining a framework for modular and scalable systems that can be used in a variety of (...)
Design guide: PDF
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 24 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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