LM2596R-3.3_Datasheet

3.0A, 150kHz, Step-Down Switching Regulator LM2596
Jan. 2015 - Rev. 1.4.2 - 4 - HTC
Characteristics
Symbol
Min
TYP
Max
Unit
All Output Voltage Versions
Feedback Bias Current (Vout=5.0V [Adjustable Version Only])
Ib
nA
T
J
=25℃
11.52
12
12.48
T
J
= 0 ~ +125℃
11.4
-
12.6
Oscillator Frequency
Fosc
kHz
T
J
=25℃
127
150
173
T
J
= 0 ~ +125℃
110
-
173
Saturation Voltage (Iout=3.0A [note 3])
Vsat
V
T
J
=25℃
-
1.16
1.4
T
J
= 0 ~ +125℃
-
-
1.5
Max Duty Cycle ("0") [Note 4]
DC
-
100
-
%
Current Limit (Peak Current [Note 3])
ICL
A
T
J
=25℃
3.6
4.5
6.9
T
J
= 0 ~ +125℃
3.4
-
7.5
Output Leakage Current [Note 5 and 6], T
J
=25℃
IL
mA
Output = 0V
-
-
50
Output = -1.0V
-
2
30
Quiescent Current [Note 5]
IQ
mA
T
J
=25℃
-
5
-
T
J
= 0 ~ +125℃
-
-
10
Standby Quiescent Current (ON/OFF Pin = 5.0V ("off"))
ISTBY
㎂
T
J
=25℃
-
80
200
T
J
= 0 ~ +125℃
-
-
250
ON/OFF Pin Logic Input Level (Test circuit Figure 2)
V
Vout=0V
VIH
T
J
=25℃
2.0
1.3
-
T
J
= 0 ~ +125℃
2.0
-
-
Vout=Nominal Output Voltage
VIL
T
J
=25℃
-
1.3
0.6
T
J
= 0 ~ +125℃
-
-
0.6
ON/OFF Pin Input Current (Test Circuit Figure 2)
㎂
VLOGIC = 2.5V (Regulator OFF)
IIH
-
5
15
VLOGIC = 0.5V (Regulator ON)
IIL
-
0.02
5.0
1. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2596 is used as shown in the Figure 1 test circuit, system performance will be as shown in system parameters section .
2. Tested junction temperature range for the LM2596 : TLOW = –40°C THIGH = +125°C
3. Output (Pin 2) sourcing current. No diode, inductor or capacitor connected to output pin.
4. Feedback (Pin 4) removed from output and connected to 0 V.
5. Feedback (Pin 4) removed from output and connected to +12V for the Adjustable, 3.3V, and 5.0V versions, and '+25 V for the 12V versions,
to force the output transistor “off”.C195
6. Vin = 40 V.