LM2576
Micrel, Inc.
Electrical Characteristics (continued)
LM2576
Symbol
Parameter
Conditions
Typ
Limit
(Note 2)
Units
(Limits)
DEVICE PARAMETERS, ADJUSTABLE REGULATOR
I
B
f
O
Feedback Bias Current
V
OUT
= 5V
50
100/500
nA
DEVICE PARAMETERS, FIXED and ADJUSTABLE REGULATORS
Oscillator Frequency
52
47/42
58/63
Saturation Voltage
Max Duty Cycle (ON)
Current Limit
I
OUT
= 3A (Note 4)
(Note 5)
Peak Current, t
ON
≤
3µs (Note 4)
1.4
1.8/2.0
98
93
I
CL
5.8
4.2/3.5
6.9/7.5
2
7.5
30
5
10
Standby Quiescent
Current
Thermal Resistance
ON/OFF Pin = 5V (OFF)
T,U Package, Junction to Ambient (Note 7)
T,U Package, Junction to Ambient (Note 8)
T,U Package, Junction to Case
50
200
65
45
2
kHz
kHz (min)
kHz (max)
V
V(max)
%
%(min)
A
A(min)
A(max)
mA(max)
mA
mA(max)
mA
mA(max)
µA
µA(max)
°C/W
V
SAT
DC
I
L
Output Leakage Current
V
IN
= 40V, (Note 6),
(Note 6)
Output = 0V
Output = –1V
Output = –1V
I
Q
I
STBY
θ
JA
θ
JA
θ
JC
Quiescent Current
(Note 6)
M9999-082605-B
4
August 2005
MICREL [ MICREL SEMICONDUCTOR ]
