SCD8657 Rev G
Manufactured using
Linear Technology Corporation
Space Qualified RH1086 die
Radiation performance
- Total dose
> 100 krad (Si)
Two-Independent voltage regulators
Thermal shutdown
Output voltage adjustable: 1.25V to 23V
Dropout voltage: 1.3V at 1.0Amp
3-Terminal
Output current: 1.0A (See Note 1 Pg 2)
Voltage reference: 1.25V +2%, -3.2%
Load regulation: 0.3% max
Line regulation: 0.25% max
Ripple rejection: >60dB
Packaging – Hermetic metal
- Thru-hole or Surface mount
- 6 Leads, .42"L x .65"W x .200"Ht
- Power package
- Weight - 5 gm max
Designed for aerospace and high reliability space
applications
Available on DSCC SMD: 5962-09201
DESCRIPTION
The Aeroflex Plainview VRG8657/8658 consists of two Positive Adjustable (RH1086) LDO voltage regulators each
capable of supplying 1.0Amps over the output voltage range as defined under recommended operating conditions. The
VRG8657/8658 offers excellent line and load regulation specifications and ripple rejection. There is full electrical
isolation between the regulators and each regulator to the package.
Dropout (VIN - VOUT) decreases at lower load currents for both regulators.
The VRG8657/8658 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 VRG8657/8658 has been specifically designed to meet exposure to radiation environments. The VRG8657 is
configured for a Thru-Hole 6 lead metal power package and the VRG8658 is configured for a Surface Mount 6 lead
metal power package. It is guaranteed operational from -55°C to +125°C. Available screened to MIL-STD-883, the
VRG8657/8658 is ideal for demanding military and space applications.
For detailed performance characteristic curves, applications information and typical applications see the
latest
Linear Technology Corporation
data sheets for their RH/LT1086, which is available on-line at
www.linear.com.
Radiation Tolerant
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
June 21, 2010
www.aeroflex.com/voltreg
Standard Products
FEATURES
VRG8657/VRG8658
Low Drop Out(LDO)Adjustable Voltage Regulators
5
VIN
ADJ
VOUT
4
3
VIN
ADJ
VOUT
1
2
6
RH1086
Positive
Regulator
RH1086
Positive
Regulator
Dual Positive