DATASHEET HS-117RH, HS-117EH FN4560 Rev.11.00 Radiation Hardened Adjustable Positive Voltage Regulator Mar 28, 2019 The radiation hardened HS-117RH and HS-117EH are Features adjustable positive voltage linear regulators capable of Electrically screened to DLA SMD 5962-99547 operating with input voltages up to 40V . The HS-117EH DC encompasses all of the production testing of the HS-117RH Superior temperature stability and additionally is tested in the Enhanced Low Dose Rate Overcurrent and over-temperature protection Sensitivity (ELDRS) product manufacturing flow. The output voltage is adjustable from 1.25V to 37V with two external Wide input voltage range 4.25V to 40V resistors. The device is capable of sourcing from 5mA to 1.25A Operating temperature range -55C to +125C max (0.5A max for the TO-39 package). Current protection is provided by the on-chip thermal shutdown and output current QML qualified per MIL-PRF-38535 requirements limiting circuitry. Radiation environment 2 The HS-117xH s advantage over other industry types is its - SEL/SEB LET (V = 40V) .87.4 MeVcm /mg TH S incorporated circuitry that minimizes the effects of radiation - Total Dose, High Dose Rate . 300krad(Si) and temperature on device stability. - Total Dose, Low Dose Rate . 100krad(Si)* The HS-117RH and HS-117EH are constructed in the * Product capability established by initial characterization. The dielectrically isolated Rad Hard Silicon Gate (RSG) process and EH version is acceptance tested on a wafer-by-wafer basis to are immune to single event latch-up and are specifically 50krad(Si) at low dose rate. designed to provide highly reliable performance in harsh radiation environments. Related Literature For a full list of related documents, visit our website Applications HS-117RH, HS-117EH device pages Adjustable voltage regulators Adjustable current regulators 0.30 0.25 0.20 HS-117EH V IN V 0.15 IN OUT OUTPUT OUT C1 R1 C2 ADJUST HIGH DOSE RATE 0.10 LOW DOSE RATE 0.05 R2 0.00 -0.05 0 50 100 150 200 250 300 krad(Si) V = V (1+R2/R1) + I R2 OUT REF ADJ FIGURE 1. TYPICAL APPLICATION FIGURE 2. V SHIFT vs HIGH and LOW DOSE RATE RADIATION OUT FN4560 Rev.11.00 Page 1 of 16 Mar 28, 2019 V SHIFT (%) OUTHS-117RH, HS-117EH Typical Applications HS-117EH HS-117EH V V IN OUT V IN OUT IN OUTPUT OUT IN OUTPUT 30F 30F ADJUST R1 30F ADJUST R1 CONSTANT I OUT R2 30F V = V (1+ R2/R1) + I *R2 I = V / R1 OUT REF ADJ OUT REF FIGURE 3. RESISTOR ADJUSTED OUTPUT VOLTAGE FIGURE 4. CONSTANT CURRENT REGULATOR HS-117EH HS-117EH V V IN OUT V IN V IN OUTPUT OUT OUT IN OUTPUT OUT 30F 30F ADJUST R1 30F 30F ADJUST R1 Q1 HIGH = SHUTDOWN R2 R2 R4 R3 0V R3 a Q2 Q1 R5 b In shutdown V = V OUT REF R6 FIGURE 5. REGULATOR SHUTDOWN FIGURE 6. FOUR DIGITALLY PROGRAMMED OUTPUT VOLTAGES Functional Block Diagram IN ADJUST 1.25V OUT FN4560 Rev.11.00 Page 2 of 16 Mar 28, 2019