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PDF VRG8666 Data sheet ( Hoja de datos )

Número de pieza VRG8666
Descripción Voltage Regulator
Fabricantes Cobham Semiconductor 
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No Preview Available ! VRG8666 Hoja de datos, Descripción, Manual

Voltage Regulator
VRG8666
1A ULDO Adjustable Positive Voltage Regulator
Released Datasheet
Cobham.com/HiRel
March 31, 2016
The most important thing we build is trust
FEATURES
Manufactured using
Space Qualified RH3080 die
Radiation performance
Total dose: 100 krad(Si), Dose rate = 50-300 rad(Si)/s
ELDRS: 50 krad(Si), Dose rate < 0.01 rad(Si)/s
Current Limit with Foldback and Over-temperature protection
Output voltage adjustable: 0V to 36V
Outputs may be paralleled for higher current
Post Radiated Dropout voltage:
0.60V @ 1.0 Amps
0.39V @ 0.5 Amps
Output current: 1.0 Amps
Packaging – Hermetic Ceramic
Hermetic Surface Mount Power
5 Pads, .545"L x .296"W x .120"Ht
Weight - 2.0 gm max
Designed for aerospace and high reliability space applications
Radiation Hardness Assurance Plan: DLA Certified to MIL-PRF-38534, Appendix G.
DESCRIPTION
The VRG8666 consists of a Positive Adjustable (RH3080) ULDO voltage regulator capable of supplying
1.0 Amps over the output voltage range as defined under recommended operating conditions. The
VRG8666 offers excellent line and load regulation specifications and ripple rejection.
The VRG8666 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 VRG8666 has been specifically designed to meet exposure to radiation environments and is configured
for an SMD power package. It is guaranteed operational from -55°C to +125°C. Available screened to
MIL-STD-883, the VRG8666 is ideal for demanding military and space applications.
Dropout (VIN - VOUT) decreases at lower load currents.
Input capacitance is required for load regulation. 1uF is recommended on Vin and Vcontrol. For stable
operation, a 0.1uF capacitor should be placed on Vset and a low ESR capacitor on Vout. See Figure 5.
For detailed performance characteristic curves, applications information and typical applications see the
latest
Linear Technology Corporation ® data sheets for their RH/LT3080, which is available
on-line at www.linear.com.
3
SCD8666
Rev M
SET
5
OUT
VCONTROL
4
RH3080
Positive Regulator
2 SENSE
IN
1
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
1 Cobham Semiconductor Solutions
www.cobham.com/HiRel

1 page




VRG8666 pdf
Pin 1
Epoxy Dot
(on side)
.301
MAX
.095
4 Places
R.025 MAX
6 Places
4
.030 MIN
.005
1
.120
4 Places
.550
MAX
.030
MIN
5
.200
4X R.020
.030
MIN
.127
MAX
.015
3 Places
32
.150
.286
NOTES:
1. Package & Lid are electrically isolated from signal pads
.005
.005
.005
SCD8666
Rev M 3/31/2016
FIGURE 6 – PACKAGE OUTLINE — SURFACE MOUNT
5 Cobham Semiconductor Solutions
www.cobham.com/HiRel

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