FN4560 Rev.11.01

Page 1 of 15

Aug 12, 2025

© 2001-2025 Renesas Electronics

HS-117RH, HS-117EH

Radiation Hardened Adjustable Positive Voltage Regulator

DATASHEET

The radiation hardened HS-117RH and HS-117EH are

adjustable positive voltage linear regulators capable of

operating with input voltages up to 40VDC. The HS-117EH

encompasses all of the production testing of the HS-117RH

and additionally is tested in the Enhanced Low Dose Rate

Sensitivity (ELDRS) product manufacturing flow. The output

voltage is adjustable from 1.25V to 37V with two external

resistors. The device is capable of sourcing from 5mA to 1.25A

max (0.5A max for the TO-39 package). Current protection is

provided by the on-chip thermal shutdown and output current

limiting circuitry.

The HS-117xH's advantage over other industry types is its

incorporated circuitry that minimizes the effects of radiation

and temperature on device stability.

The HS-117RH and HS-117EH are constructed in the

dielectrically isolated Rad Hard Silicon Gate (RSG) process and

are immune to single event latch-up and are specifically

designed to provide highly reliable performance in harsh

radiation environments.

Applications

• Adjustable voltage regulators

• Adjustable current regulators

Features

• Electrically screened to DLA SMD # 5962-99547

• Superior temperature stability

• Overcurrent and over-temperature protection

• Wide input voltage range . . . . . . . . . . . . . . . . . . 4.25V to 40V

• Operating temperature range. . . . . . . . . . . .-55°C to +125°C

• QML qualified per MIL-PRF-38535 requirements

• Radiation environment

- SEL/SEB LETTH (VS = 40V) . . . . . . . . . . 87.4 MeV•cm2/mg

- Total Dose, High Dose Rate . . . . . . . . . . . . . . . 300krad(Si)

- Total Dose, Low Dose Rate. . . . . . . . . . . . . . . 100krad(Si)*

* Product capability established by initial characterization. The

EH version is acceptance tested on a wafer-by-wafer basis to

50krad(Si) at low dose rate.

Related Literature

For a full list of related documents, visit our website

• HS-117RH, HS-117EH device pages

FIGURE 1. TYPICAL APPLICATION

FIGURE 2. VOUT SHIFT vs HIGH and LOW DOSE RATE RADIATION

OUTPUT

R1

R2

C1

C2

VOUT = VREF (1+R2/R1) + IADJ R2

VIN

VOUT

HS-117EH

IN

ADJUST

OUT

0

50

100

150

200

250

300

krad(Si)

-0.05

0.00

0.05

0.10

0.15

0.20

0.25

0.30

HIGH DOSE RATE

LOW DOSE RATE