LT1038_15 Datasheet, PDF (3/8 Pages) Linear Technology – 10A Positive Adjustable Voltage Regulator

LT1038
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Unless otherwise specified, these specifications apply:
V_IN – V_OUT = 5V and I_OUT = 5A. These specifications are applicable for
power dissipations up to 75W. At input-output voltage differentials greater
than 10V, achievable output current and power dissipation decrease due to
protection circuitry.
Note 3: See thermal regulation specifications for changes in output voltage
due to heating effects. Load and line regulation are measured at a constant
junction temperature by low duty cycle pulse testing.
TYPICAL PERFOR A CE CHARACTERISTICS
Dropout Voltage
4
∆V_OUT = 100mV
3
I_OUT = 10A
I_OUT = 6A
2
I_OUT = 2A
1
– 75 – 50 – 25 0 25 50 75 100 125 150
TEMPERATURE (°C)
1038 TA02
Output Impedance
10
V_IN = 15V
V_OUT = 10V
1 ^{IOUT = 1A}
0.1
0.01
0.001
C_ADJ = 0µF
C_OUT = 0µF
C_ADJ = 10µF
C_OUT = 10µF
0.0001
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
1038 G04
Adjustment Current
65
60
55
50
45
40
35
30
– 75 – 50 – 25 0 25 50 75 100 125 150
TEMPERATURE (°C)
1038 G02
Minimum Operating Current
10
8
T_j = 150°C
6
T_j = 25°C
4
T_j = – 55°C
2
0
0 5 10 15 20 25 30 35 40
INPUT-OUTPUT DIFFERENTIAL (V)
1038 G05
Temperature Stability
1.27
1.26
1.25
1.24
1.23
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1038 G03
Ripple Rejection
100
C_ADJ = 10µF
80
C_ADJ = 0µF
60
40
V_IN – V_OUT = 5V
20 _{IOUT = 1A}
f = 120Hz
T_j = 25°C
0
0 5 10 15 20 25
OUTPUT VOLTAGE (V)
30 35
1038 G06
3