LM2576 Series
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range.
Unless otherwise specified, VIN =12V for the 3.3V, 5V, and Adjustable version, VIN =25V for the 12V version, and VIN =30V for the 15V
version, , ILOAD =500mA.
Symbol
Parameter
Conditions
Units
(Limits)
MIK2576-XX
MIK2576HV-XX
Typ
Limit (Note 2)
100/500
DEVICE PARAMETERS
Ib
Feedback Bias Current
VOUT =5V (Adjustable Version Only)
(Note 8)
50
52
nA
fO
Oscillator Frequency
kHz
47/42
58/63
kHz(Min)
kHz(Max)
VSAT
DC
ICL
Saturation Voltage
Max Duty Cycle (ON)
Current Limit
IOUT =3A (Note 4)
(Note 5)
1.4
98
V
1.8/2.0
V(Max)
%
%(Min)
93
(Notes 4, 8)
5.8
A
4.2/3.5
6.9/7.5
A(Min)
A(Max)
2
IL
Output Leakage Current
(Notes 6, 7):
mA(Max)
mA
mA(Max)
7.5
5
Output = -1V
Output = -1V
30
mA
IQ
Quiescent Current
(Note 6)
10
mA(Max)
50
ISTBY
Standby Quiescent Current
___
µA
ON/OFF Pin = 5V (OFF)
200
µA(Max)
___
ON/OFF CONTROL
VIH
VIL
__
VOUT = 0V
1.4
2.2/2.4
1.0/0.8
V(Min)
V(Max)
ON/OFF Pin
VOUT = Nominal Output Voltage
1.2
12
__
ON/OFF Pin Input
Current
IIH
IIL
__
µA
µA(Max)
ON/OFF Pin = 5V (OFF)
30
10
__
0
µA
µA(Max)
ON/OFF Pin = 0V (ON)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating
Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits.
For guaranteed 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).
Note 3: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system
performance. When the MIK2576/MIK2576HV is used as shown in the Figure 2 test circuit, system performance will be as
shown in system parameters section of Electrical Characteristics.
Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output.
Note 5: Feedback pin removed from output and connected to 0V.
Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V, versions, and +25V for the 12V
and 15V versions, to force the output transistor OFF.
Note 7: VIN =40V (60V for high voltage version).
Note 8: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an overload which causes the
regulated output voltage to drop approximately 40% from the nominal output voltage. This self protections feature lowers the
average power dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2%.
BEIJING ESTEK ELECTRONICS CO.,LTD
5
ESTEK [ Estek Electronics Co. Ltd ]
