lt1585a-3.3 Linear Technology Corporation, lt1585a-3.3 Datasheet - Page 3

• Manufacturer Part Number: lt1585a-3.3
• Description: Lt1585a-3.3 - 5a Low Dropout Fast Response Positive Regulators Adjustable And Fixed
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
The
PARAMETER
Ripple Rejection
Thermal
Regulation
Temperature Stability
Long-Term Stability
RMS Output Noise
(% of V
Thermal Resistance
Junction to Case
Note 1: 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.
Note 2: Line and load regulation are guaranteed up to the maximum power
dissipation 28.8W for the LT1585A in T package. Power dissipation is
determined by input/output differential and the output current. Guaranteed
maximum output power will not be available over the full input/output
voltage range.
TYPICAL PERFORMANCE CHARACTERISTICS
1.5
1.4
1.3
1.2
0.9
0.8
0.7
0.6
0.5
1.1
1.0
●
LT1585A Dropout Voltage
vs Output Current
0
denotes specificatons which apply over the specified temperature range, otherwise specifications are at T
OUT
GUARANTEED
TEST POINTS
)
1
OUTPUT CURRENT (A)
2
LT1585A
LT1585A-3.3
LT1585A
LT1585A-3.3
LT1585A
T = 25°C
3
T = –5°C
T = 125°C
W
4
LT1585A • TPC01
CONDITIONS
f = 120Hz, C
f = 120Hz, C
T
T
T
T
T Package: Control Circuitry/Power Transistor
A
A
A
A
I
I
OUT
OUT
= 25°C, 30ms Pulse
= 25°C, 30ms Pulse
= 125°C, 1000 Hrs.
= 25°C, 10Hz ≤ f ≤ 10kHz
U
5
= 5A
= 5A
OUT
OUT
= 100µF Tant., (V
= 100µF Tant., V
6.0
5.5
5.0
4.5
4.0
–75
LT1585A Short-Circuit Current
vs Temperature
–50
–25
TEMPERATURE (°C)
0
IN
IN
25 50
= 6.3V,
– V
OUT
Note 3: I
as a function of input-to-output voltage. I
LT1585A/LT1585A-3.3. The LT1585A has constant current limit with
changes in input-to-output voltage.
75
) = 3V,
100
FULL LOAD
125
LT1585A • TPC02
150
175
is defined as the maximum value of output load current
●
●
LT1585A/LT1585A-3.3
–0.05
–0.10
–0.15
–0.20
0.10
0.05
MIN
60
0
–75
LT1585A Load Regulation
vs Temperature
∆I = 5A
–50
–25
FULL LOAD
0.004
0.003
0.03
TYP
0.5
72
0
TEMPERATURE (°C)
25
A
= 25°C.
is equal to 5A for the
50
0.7/3.0
MAX
0.02
75
1.0
100
125
LT1585A • TPC03
150
UNITS
1585afa
°C/W
%/W
3
175
dB
%
%
%