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LT1033_02 Datasheet, PDF (3/12 Pages) Linear Technology – 3A Negative Adjustable Regulator | |||
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LT1033
ELECTRICAL CHARACTERISTICS (Note 2)
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
SYMBOL PARAMETER
CONDITIONS
LT1033M
MIN TYP MAX
LT1033C
MIN TYP MAX
IADJ
âIADJ
ISC
âVOUT
âTemp
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
Current Limit
Temperature Stability of
Output Voltage
10mA â¤â£ IOUT ⤠IMAX
3V ⤠|VIN â VOUT| ⤠35V
|VIN â VOUT| ⤠35V
|VIN â VOUT| ⤠10V
|VIN â VOUT| ⤠10V, (Note 3)
|VIN â VOUT| = 35V, TJ = 25°C
TMIN ⤠T ⤠TMAX
q
65
100
65
100
q
0.2
2
q
1.0
5
0.5
2
2
5
2.5
5.0
1.2
3.0
2.5
5.0
1.2
3.0
3
4.3
6
3
4.3
6
0.5
1.3
2.5
0.5
1.3
2.5
q
0.6
1.5
0.6
1.5
âVOUT
âTime
Long Term Stability
TA = 125°C, 1000 Hours
0.3
1.0
0.3
1.0
en
RMS Output Noise
(% of VOUT)
θJC
Thermal Resistance
Junction to Case
TA = 25°C, 10Hz ⤠f ⤠10kHz
T Package
K Package
P Package
0.003
1.2
2.0
0.003
2.5
4.0
1.2
2.0
1.8
2.7
UNITS
µA
µA
µA
mA
mA
A
A
%
%
%
°C/W
°C/W
°C/W
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Unless otherwise indicated, these specifications apply:
|VIN â VOUT| = 5V; and IOUT = 5mA. Power dissipation is internally limited.
However, these specifications apply for power dissipation up to 30W.
See guaranteed minimum output current curve. IMAX = 3A.
Note 3: Testing is done using a pulsed low duty cycle technique. See
thermal regulation specifications for output changes due to heating effects.
Load regulation is measured on the output pin at a point 1/8" below the
base of the package.
TYPICAL PERFOR A CE CHARACTERISTICS
Dropout Voltage
2.8
2.6
TJ = â55°C
2.4
2.2
TJ = 25°C
2.0
TJ = 150°C
1.8
1.6
1.4
1.2
0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
LT1033 ⢠G02
Temperature Stability
1.27
1.26
1.25
1.24
1.23
â75 â50 â25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1033 ⢠G03
Minimum Load Current
1.8
1.6
TJ = â55°C
1.4
1.2
1.0
TJ = 25°C
0.8
0.6
TJ = 150°C
0.4
0.2
0
0
10
20
30
40
INPUT-OUTPUT DIFFERENTIAL (V)
LT1033 ⢠G04
1033fc
3
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