type applies over full Operating Temperature Range.
LM2576
Units
Parameters
Conditions
Min
Typ
Max
Adjustable Regulator
Feedback Bias Current
V
OUT
= 5V
50
47
42
93
4.2
3.5
100
500
58
63
1.8
2.0
6.9
7.5
2
30
10
200
nA
Fixed and Adjustable Regulators
Oscillator Frequency
Saturation Voltage
Max Duty Cycle
Current Limit
Output Leakage Current
I
OUT
= 0.5A, (Note 4)
(Note 5)
Peak Current, t
ON
≤
3µs, (Note 4)
52
1.4
98
5.8
7.5
5
50
65
2
2.2
2.4
1.0
0.8
30
10
kHz
V
%
A
mA
mA
µA
°C/W
V
IN
, (Note 6), Output = 0V
(Note 6 ), Output = -1V
Quiescent Current
(Note 6)
Standby Quiescent Current
ON/OFF Pin = 5V (OFF)
T,U package, Junction to Ambient,
Thermal Resistance
(Note 7)
T,U package, Junction to case
ON/OFF Control, Fixed & Adjustable Regulators
(Note 8) (Note9)
OFF Input Level
ON Input Level
OFF Logic Current
ON Logic Current
V
OUT
= 0V
V
OUT
= 15V or 5V
ON/OFF Pin = 5V (OFF)
ON/OFF Pin = 0V (ON)
1.4
1.2
4
0.01
V
V
µA
µA
Note 1:
Absolute Maxium
Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate test conditions for which the device s
intended to be functional, but do not guarantee specific performance limits. For quaranteed specifications and test conditions see the Electrical Characteristics.
Note 2: All limits guaranteed at room temperature (standard type face) and at
temperature extremes
(bold
type face).
All room temperature limits are 100%
production tested. All limits at
temperature extremes
are guaranteed via testing.
Note 3: External components such as the diode, inductor and capacitor can affect the system performance.
Note 4: Output (pin 2) sourcing current. No diode, inductor, or capacitor connected to input.
Note 5: Feedback (pin 4) removed from output and connected to 0V.
Note 6: Feedback (pin 4) removed from output and connected to 12V to force the output transistor OFF.
Note 7: Junction to ambient thermal resistance with approximately 1 square inches of PC board cooper surrounding the leads.
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Embedded System
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