VRG8657 Datasheet, PDF (1/7 Pages) Aeroflex Circuit Technology – Dual Voltage Regulator, 1.0 Amp, Positive Low Dropout (LDO), Adjustable Radiation Tolerant

Standard Products
VRG8657/VRG8658
Dual Voltage Regulator, 1.0 Amp, Positive
Low Dropout (LDO), Adjustable
Radiation Tolerant
www.aeroflex.com/voltreg
May 15, 2012
FEATURES
❑ Manufactured using
Space Qualified RH1086 die
❑ Radiation performance
- Total dose > 100 krad (Si)
❑ Packaging – Hermetic metal
❑ Two-Independent voltage regulators
❑ Thermal shutdown
❑ Output voltage adjustable: 1.25V to 23V
❑ Dropout voltage: 1.3V at 1.0Amp
❑ 3-Terminal
❑ Output current: 1.0Amp
- Thru-hole or Surface mount
- 6 Leads, .655"L x .415"W x .200"Ht
- Power package
- Weight - 5 gm max
❑ Designed for aerospace and high reliability space
applications
❑ Voltage reference: 1.25V +2%, -3.2%
❑ Load regulation: 0.3% max
❑ Line regulation: 0.25% max
❑ Ripple rejection: >60dB
❑ Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
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.
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.
Dropout (VIN - VOUT) decreases at lower load currents for both regulators.
SCD8657 Rev K
1
4
ADJ
ADJ
2
VOUT
VOUT
6
RH1086
Positive
Regulator
RH1086
Positive
Regulator
VIN
VIN
3
5
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC