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Cobham Semiconductor - Voltage Regulator

Numéro de référence VRG8653
Description Voltage Regulator
Fabricant Cobham Semiconductor 
Logo Cobham Semiconductor 





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VRG8653 fiche technique
Voltage Regulator
VRG8653/54
Dual 3A LDO Adjustable Positive/Negative Voltage Regula-
tor
Released Datasheet
Cobham.com/HiRel
The most important thing we build is trust
FEATURES
Manufactured using
Space Qualified RH1084 and RH1185 die
Radiation performance
- Total dose > 100 krad(Si)
Packaging – Hermetic metal
– Thru-hole or Surface mount
Two-Independent voltage regulators
Thermal shutdown
Adjustable Output Voltages
– 8 Leads, .755"L x .415"W x .200"Ht
– Power package
– Weight - 6 gm max
Designed for aerospace and high reliability space
applications
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
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
Radiation Hardness Assurance Plan: DLA Certified to MIL-PRF-38534, Appendix G.
DESCRIPTION
The 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.
Dropout (VIN - VOUT) decreases at lower load currents for both regulators.
13
ADJ
RH1084
7 VOUT
VOUT
VIN
RH1185
RF
4
2
FB 6
VIN GND
SCD8653
Rev E
85
Positive
Negative
Regulator
Regulator
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
1 Cobham Semiconductor Solutions
www.cobham.com/HiRel

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