LM2576 Series
Typical Performance Characteristics
(Circuit of
Figure 2)
Normalized Output Voltage
V
IN
=20V
I
L OA D
= 500mA
Normalized at
T
J
=25°
C
Line Regulation
I
L OA D
= 500mA
T
J
=25°
C
3.3V, 5V & ADJ
12V & 15V
Dropout Voltage
I
L OA D
= 3A
L
1
= 150
H
I
L OA D
= 1A
I
L OA D
= 200mA
R
IND
= 0.1Ω
JUNCTION TEMPERATURE (°
C)
INPUT VOLTAGE (V)
JUNCTION TEMPERATURE (°
C)
Standby
Quiescent Current
Quiescent Current
Current Limit
V
IN
= 25V
V
IN
= 40V
V
OUT
= 5V
Measured at
Ground Pin
T
J
=25°
C
I
LOAD
= 3A
I
LOAD
= 200mA
V
ON/OFF
= 5V
V
IN
=12 V
JUNCTION TEMPERATURE (°
C)
INPUT
VOLTAGE (V)
JUNCTION TEMPERATURE (°
C)
Switch Saturation
Voltage
Efficiency
Oscilator Frequency
Normalized at 25°
C
I
L OA D
= 3A
-55°
C
25°
C
150°
C
15V OUT
5V
I
L OA D
= 3A
T
J
=25°
C
I
L OA D
= 200mA
V
IN
= 40V
I
L OA D
= 200mA
SWITCH CURRENT (A)
INPUT VOLTAGE (V)
V
IN
= 12V
JUNCTION TEMPERATURE (°
C)
Minimum Operating Voltage
Quiescent Current
vs Duty Cycle
Adjustable Version Only
Feedback Voltage
vs Duty Cycle
Adjustable Version Only
Adjustable Version Only
V
IN
= 7V
V
IN
= 40V
V
OUT
≈
1.23V
I
LOAD
= 500mA
I
LOAD
= 500mA
V
IN
= 40V
V
IN
= 7V
I
LOAD
= 500mA
JUNCTION TEMPERATURE (°
C)
DUTY CYCLE (%)
DUTY CYCLE (%)
BEIJING ESTEK ELECTRONICS CO.,LTD
6
ESTEK [ Estek Electronics Co. Ltd ]
