1

RAD HARD POSITIVE,

1.9A, LDO, SINGLE RESISTOR

ADJ VOLTAGE REGULATOR

FEATURES:

• Manufactured using

Space Qualified RH3083 Die

• MIL-PRF-38534 Class K Processing & Screening

• Total Dose Hardened to 300 Krads(Si) (Method 1019.7 Condition A)

• Low Dropout to 310mV (VIN - VOUT, with Seperate Control Supply)

• Output Adjustable to Zero Volts

• Internal Short Circuit Current Limit

• Output Voltage is Adjustable with 1 External Resistor

• Output Current Capability to 1.9A

• Internal Thermal Overload Protection

• Outputs may be Paralleled for Higher Current

• Contact MSK for MIL-PRF-38534 Qualification and Radiation Status

DESCRIPTION:

The MSK5985RH offers low dropout down to 310mV and an output voltage range down to zero volts while offering

exceptional device efficiency. Output voltage is selected by the user through the use of 1 external resistor. Additionally, the

regulator offers internal short circuit current and thermal limiting, which allows circuit protection and eliminates the need for

external components and excessive derating. The MSK5985RH is hermetically sealed in a space efficient 5 pin SIP, that is

electrically isolated from the internal circuitry allowing for direct heat sinking.

1 VIN

2 CONTROL

3 VOUT

4 SENSE

5 SET

• High Efficiency Linear Regulators

• Constant Voltage/Current Regulators

• Space System Power Supplies

• Switching Power Supply Post Regulators

• Very low Voltage Power Supplies

MIL-PRF-38534 AND 38535 CERTIFIED FACILITY

8548-143 Rev. E 12/17

5985RH

EQUIVALENT SCHEMATIC

TYPICAL APPLICATIONS

PIN-OUT INFORMATION

CASE = ISOLATED