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PDF VRG8688 Data sheet ( Hoja de datos )

Número de pieza VRG8688
Descripción Voltage Regulator
Fabricantes Cobham Semiconductor 
Logotipo Cobham Semiconductor Logotipo



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No Preview Available ! VRG8688 Hoja de datos, Descripción, Manual

Voltage Regulator
VRG8687/88
Dual 3A LDO Adjustable Positive Voltage Regulators
Released Datasheet
Cobham.com/HiRel
March 24, 2016
The most important thing we build is trust
FEATURES
Manufactured using
Space Qualified RH1084 die
Radiation performance
- Total dose > 100 krad(Si),
Packaging – Hermetic metal
Dose rate = 50-300 rad(Si)/s
- Thru-hole or Surface mount
Two-Independent voltage regulators
- 8 Leads, .755"L x .415"W x .200"Ht
Thermal shutdown
Output voltage adjustable: 1.25V to 23V
Dropout voltage: 1.80V at 3.0Amps
3-Terminal
- Power package
- Weight - 6 gm max
Designed for aerospace and high reliability space
applications
Output current: 3.0Amps
Voltage reference: 1.25V +2%, -3.2%
Load regulation: 0.35% max
Line regulation: 0.25% max
Ripple rejection: >60dB
Radiation Hardness Assurance Plan: DLA Certified to MIL-PRF-38534, Appendix G.
DESCRIPTION
The VRG8687/8688 consists of two Positive Adjustable (RH1084) LDO voltage regulators each capable of supplying
3.0Amps over the output voltage range as defined under recommended operating conditions. The VRG8687/8688
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 VRG8687/8688 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 VRG8687/8688 has been specifically designed to meet exposure to radiation environments. The VRG8687 is
configured for a Thru-Hole 8 lead metal power package and the VRG8688 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 VRG8687/8688 is ideal for demanding military and space applications.
Dropout (VIN - VOUT) decreases at lower load currents for both regulators.
SCD8687
Rev D
15
ADJ_1
ADJ_2
2 VOUT_1
VOUT_2
6
RH1084
Positive
Regulator
RH1084
Positive
Regulator
3
SENSE_1
SENSE_2
7
VIN_1
VIN_2
84
FIGURE 1 – BLOCK DIAGRAM / SCHEMATIC
1 Cobham Semiconductor Solutions
www.cobham.com/HiRel

1 page




VRG8688 pdf
TABLE I – PIN NUMBERS vs FUNCTION
PIN FUNCTION
1 ADJ_1
2 VOUT_1
3 SENSE_1
4 VIN_2
5 ADJ_2
6 VOUT_2
7 SENSE_2
8 VIN_1
.090
8X
ø .010 M C B A
ø.145 THRU
2x .028
MAX.
.300
.100
.108
8765
.415
–C–
.2075
ESD/PIN 1
1 2 3 4 IDENT
R.065 TYP.
4 PLCS
±.003
.220 MAX.
±.005
–A–
.515
.632
.755
.040
Notes:
1. Dimension Tolerance: ±.005 inches
2. Package contains BeO substrate
3. Case electrically isolated
–B–
.030 DIA.
±.002
.150 REF.
2° MAX. TYP.
.720 ±.020
MEASURED
LEAD TIP
.230 MIN
.122
ø .010 B C A
ø .010 M C B A
FIGURE 5 – VRG8687 PACKAGE OUTLINE — THRU-HOLE POWER PACKAGE
SCD8687
Rev D 3/24/2016
5 Cobham Semiconductor Solutions
www.cobham.com/HiRel

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