ETC OM7638SM

OM7638SM
SURFACE MOUNT NEGATIVE ADJUSTABLE
3.0 AMP VOLTAGE REGULATOR
Isolated Hermetic Surface Mount Package
3.0 Amp, Negative Adjustable Voltage
Regulator
FEATURES
•
•
•
•
•
•
Isolated Hermetic Surface Mount Package
Reference Voltage Set Internally To ±2% (±1% Available)
Built-In Thermal Overload Protection
Short Circuit Current Limiting
Small Metal Package
Product Is Available Hi-Rel Screened
DESCRIPTION
These three terminal negative regulators are supplied in a hermetic metal 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35V
Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25°C
TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28W
TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance:
θJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
Lead Temperature at Case (5 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225°C
3.5
Note: For ±1% device, add letter “A” in front of part number (e.g. OMA7638SM).
4 11 R1
Supersedes 1 06 R0
3.5 - 133
OM7638SM
ELECTRICAL CHARACTERISTICS
-55°C ≤ TA ≤ +125°C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Reference Voltage
VREF
VIN - VOUT  = 5 V, IOUT = 5 mA, TA = 25° C
-1.238
-1.262
-1.215
-1.285
3 V ≤ VIN - VOUT  ≤ 35 V
Line Regulation
∆VOUT
(Note 1)
∆VIN
Load Regulation
∆VOUT
VOUT  ≤ 5 V, TA = 25° C
(Note 1)
∆IOUT
10 mA ≤ IOUT ≤ IMAX.
•
V
0.015
3 V ≤ VIN - VOUT  ≤ 35 V
%/V
•
0.04
50
mV
•
75
VOUT ≥ 5.0 V
1.0
-
Ripple Rejection
∆VIN
(Note 2)
∆VREF
0.02
Adjust Pin Current
IAdj
VDIFF = 35 V, IL = 10 mA
∆IAdj
10 mA ≤ IOUT ≤ IMAX.
VIN - VOUT  ≤ 35 V
VIN - VOUT  ≤ 10 V
ILim
∆VOUT
(Note 2)
∆T
Long Term Stability
∆VOUT
(Note 2)
∆T
53
•
•
•
•
•
•
60
dB
100
•
µA
5.0
5.0
mA
3.0
6.0
A
3.0
0.5
•
2.5
A
0.5
•
-55° C ≤ TJ ≤ +125° C
µA
2.0
3.0
VIN - VOUT  ≤ 10 V
VIN - VOUT  = 35 V
Temperature Stability
dB
•
70
3 V ≤ VIN - VOUT  ≤ 35 V
Current Limit
%/W
56
VOUT = -10 V, f = 120 Hz, CAdj = 0
Adjust Pin Current Change
IMin
1.5
30 ms pulse, TA = 25° C
VOUT = -10 V, f = 120 Hz, CAdj = 10 µF
Minimum Load Current
%
•
10 mA ≤ IOUT ≤ IMAX.
Thermal Regulation
Unit
TA = +125° C, t = 1000 hrs
1.5
%
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.
PIN CONNECTION
MECHANICAL OUTLINE
.425B
3.5
B
2
1
.100B
.425B
B
.200B
.035 WIDEB
FLAT 3 PLCS.B
B
.350 MIN.B
B
3
± .020B
.115B
.160B
.020B
.080 B
Pin 1:
Pin 2:
Pin 3:
Case:
VIN
Adjust
VOUT
Isolated