SCD8653 Rev D



Manufactured using

Space Qualified RH1084 and RH1185 die

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Radiation performance

- Total dose

> 100 krad (Si)

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Two-Independent voltage regulators

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Thermal shutdown

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Adjustable Output Voltages

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Positive regulator features (RH1084)

– Output voltage adjustable: 1.25V to 23V

– Dropout voltage: 1.80V at 3.0A

– 3-Terminal

– Output current: 3.0A

– Voltage reference: 1.25V +2%, -3.2%

– Load regulation: 0.35% max

– Line regulation: 0.25% max

– Ripple rejection: >60dB

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Packaging – Hermetic metal

– Thru-hole or Surface mount

– 8 Leads, .755"L x .415"W x .200"Ht

– Power package

– Weight - 6 gm max

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Designed for aerospace and high reliability space

applications

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Negative regulator features (RH1185)

– Output voltage adjustable: -2.37 to -25V

– Dropout voltage: 1.05V at 3.0A

– 5-Terminal

– Output current: 3.0A

– Voltage reference: -2.370V ±3.5%

– Load regulation: 0.8% max

– Line regulation: 0.02% max

– Ripple rejection: >60dB

DESCRIPTION

The Aeroflex Plainview VRG8653/54 consists of one Positive Adjustable (RH1084) and one Negative Adjustable

(RH1185) LDO voltage regulator, both capable of supplying 3.0Aover the output voltage range as defined under

recommended operating conditions. The VRG8653/54 offers excellent line and load regulation specifications and

ripple rejection. There is full electrical isolation between the regulators and each regulator to the package.

The VRG8653/54 serves a wide variety of applications including SCSI-2 Active Terminator, High Efficiency Linear

Regulators, Post Regulators for Switching Supplies, Constant Current Regulators, Battery Chargers and

Microprocessor Supply.

The VRG8653/54 has been specifically designed to meet exposure to radiation environments and is configured for a

Thru-Hole 8 lead metal power package and the VRG8654 is configured for a Surface Mount 8 lead metal power

package. It is guaranteed operational from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534,

the VRG8653/54 is ideal for demanding military and space applications.

FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC

April 10, 2014

Standard Products

7

Positive

Regulator

FEATURES

6

GND

RH1185

FB

2

3

5

RH1084

Positive

Regulator

Negative

Regulator

4

RF

8

1

Radiation Tolerant

VRG8653/VRG8654

Dual Voltage Regulator, 3.0Amp, Positive&Negative

Low Dropout (LDO), Adjustable

www.aeroflex.com/voltreg

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Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.

Datasheet