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OM7627NM
HERMETIC SURFACE MOUNT ADJUSTABLE NEGATIVE VOLTAGE REGULATORS
Three Terminal, Adjustable Voltage, 3.0 Amp Precision Negative Regulators In Hermetic Surface Mount Package
FEATURES
* * * * * Hermetic Surface Mount Package Reference Voltage Set Internally To 2% Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Hi-Rel Screened
DESCRIPTION
These three terminal negative regulators are supplied in a hermetic surface mount package. All protective features are designed into the circuit including thermal shutdown, current limiting and safe-area control. With heat sinking, they can deliver over 3.0 amps of output current. These units feature 2% initial voltage tolerance, with 1.0% load regulation and .015% line regulation.
ABSOLUTE MAXIMUM RATINGS
Input to Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35 V Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Typical Power/Thermal Characteristics: Rated Power @ 25C TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28W TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W Thermal Resistance: JC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5C/W JA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W Lead Temperature at Case (5 sec). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225C
PIN CONNECTION
1 2
MECHANICAL OUTLINE
.140 .500 .015 .075 .157 .140 .140 .075
.030 MIN.
3.5
Pin 1: Adjust Pin 2: VOUT
3
625
Pin 3: VIN
.415
.062
.375
TOP VIEW
SIDE VIEW
BOTTOM VIEW
4 11 R1 Supersedes 1 05 R0
3.5 - 115
OM7627NM
ELECTRICAL CHARACTERISTICS
Parameter Reference Voltage Symbol VREF
-55C TA +125C (unless otherwise specified)
Min. -1.238 Max. -1.262 V -1.215 -1.285 0.015 %/V 0.04 50 mV 75 1.0 % 1.5 0.02 56 %/W dB 53 70 dB 60 100 2.0 A 5.0 5.0 mA 3.0 3.0 6.0 A 3.0 0.5 2.5 A 0.5 1.5 % A Unit
Test Conditions VIN - VOUT = 5 V, IOUT = 5 mA, TA = 25 C 3 V VIN - VOUT 35 V
* * * *
Line Regulation (Note 1) Load Regulation (Note 1)
VOUT VIN VOUT IOUT
3 V VIN - VOUT 35 V VOUT 5 V, TA = 25 C 10 mA IOUT IMAX. VOUT 5.0 V 10 mA IOUT IMAX.
Thermal Regulation Ripple Rejection (Note 2)
VIN VREF
30 ms pulse, TA = 25 C VOUT = -10 V, f = 120 Hz, CAdj = 0 VOUT = -10 V, f = 120 Hz, CAdj = 10 F
* * * * * * * * * *
Adjust Pin Current Adjust Pin Current Change
IAdj IAdj
VDIFF = 35 V, IL = 10 mA 10 mA IOUT IMAX. 3 V VIN - VOUT 35 V VIN - VOUT 35 V VIN - VOUT 10 V
Minimum Load Current
IMin
Current Limit
ILim
VIN - VOUT 10 V VIN - VOUT = 35 V
Temperature Stability (Note 2) Long Term Stability (Note 2)
VOUT T VOUT T
-55 C TJ +125 C
TA = +125 C, t = 1000 hrs
1.0
%
Notes: 1. Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique. Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 30 W. Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range. 2. Guaranteed by design, characterization or correlation to other tested parameters. 3. The * denotes the specifications which apply over the full operating temperature range.
3.5

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