LT1033_15 Datasheet, PDF (3/12 Pages) Linear Technology – 3A Negative Adjustable Regulator

LT1033
ELECTRICAL CHARACTERISTICS _{(Note 2)}
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are T_A = 25°C.
SYMBOL PARAMETER
CONDITIONS
LT1033M
MIN TYP MAX
LT1033C
MIN TYP MAX
I_ADJ
∆I_ADJ
I_SC
∆V_OUT
∆Temp
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
Current Limit
Temperature Stability of
Output Voltage
10mA ≤␣ I_OUT ≤ I_MAX
3V ≤ |V_IN – V_OUT| ≤ 35V
|V_IN – V_OUT| ≤ 35V
|V_IN – V_OUT| ≤ 10V
|V_IN – V_OUT| ≤ 10V, (Note 3)
|V_IN – V_OUT| = 35V, T_J = 25°C
T_MIN ≤ T ≤ T_MAX
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
∆V_OUT
∆Time
Long Term Stability
T_A = 125°C, 1000 Hours
0.3
1.0
0.3
1.0
e_n
RMS Output Noise
(% of V_OUT)
θ_JC
Thermal Resistance
Junction to Case
T_A = 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:
|V_IN – V_OUT| = 5V; and I_OUT = 5mA. Power dissipation is internally limited.
However, these specifications apply for power dissipation up to 30W.
See guaranteed minimum output current curve. I_MAX = 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
T_J = –55°C
2.4
2.2
T_J = 25°C
2.0
T_J = 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
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1033 • G03
Minimum Load Current
1.8
1.6
T_J = –55°C
1.4
1.2
1.0
T_J = 25°C
0.8
0.6
T_J = 150°C
0.4
0.2
0
0
10
20
30
40
INPUT-OUTPUT DIFFERENTIAL (V)
LT1033 • G04
1033fc
3