SCD8691 Rev H

11

12

10



Radiation performance

- Total dose:

100 krads(Si),

Dose rate = 50 - 300 rads(Si)/s



Output voltage adjustable: 1.0V to 3.3V



Output current: 7.5A



Dropout voltage: 0.5V at 7.5Amps



Voltage reference: 1.0V ±0.5%



Load regulation: 0.5% max



Line regulation: 0.2% max



Ripple rejection: >80dB



Enable Input - TTL / CMOS Compatible



Slow Start capability



Stable with multiple ceramic output capacitors



Packaging – Hermetic metal

- Thru-hole or Surface mount

- 12 Leads, 0.900"L x 1.000"W x .205"Ht

- Power package

- Weight - 18 gm max



Designed for aerospace and high reliability space

applications

DESCRIPTION

The Aeroflex Plainview VRG8691/92 is capable of supplying in excess of 7.5Amps over the output voltage range as

defined under recommended operating conditions. The regulator is exceptionally easy to set-up, requiring only 2

external resistors to set the output voltage. The module design has been optimized for excellent regulation and low

drop-out voltage. Figures 2 through 5 illustrate setting output voltage, setting current limits and choosing a slow start

capacitor. The VRG8691/92 serves a wide variety of applications including local on-card regulation, programmable

output voltage regulation or precision current regulation.

The VRG8691/92 has been specifically designed to meet exposure to radiation environments. The VRG8691 is

configured for a Thru-Hole 12 lead metal power package and the VRG8692 is configured for a Surface Mount 12 lead

metal power package. It is guaranteed operational from -55°C to +125°C. Available screened to MIL-STD-883, the

VRG8691/92 is ideal for demanding military and space applications.

The VRG8691/92 features internal current limiting making them virtually blowout-proof against overloads. The limit

is nominally 11.5A @ Vin = 5V (see Table 2), but may be increased or decreased with the addition of one external

resistor (see Application Note 2).

VRG8691/92

Radiation Tolerant

FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC

November 12, 2013

www.aeroflex.com/voltreg

Standard Products

Adjustable 7.5A Positive LDO Regulator

FEATURES

8

VRG8691/92

9

6

5

4

Current Limit

GND

ENABLE

7

Slow Start

2

1

3



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