LM2596DSADJR4G ON Semiconductor, LM2596DSADJR4G Datasheet - Page 4

• Manufacturer Part Number: LM2596DSADJR4G
• Description: IC REG SW STP-DWN 3A D2PAK-5
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM2596DSADJR4G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 37 V
• Current - Output: 3A
• Frequency - Switching: 150kHz
• Voltage - Input: 4.5 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Output Voltage: 1.23 V to 37 V
• Output Current: 3 A
• Input Voltage: - 5 V to - 12 V
• Switching Frequency: 150 KHz
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 95 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
2. The oscillator frequency reduces to approximately 30 kHz in the event of an output short or an overload which causes the regulated output
3. No diode, inductor or capacitor connected to output (Pin 2) sourcing the current.
4. Feedback (Pin 4) removed from output and connected to 0 V.
5. Feedback (Pin 4) removed from output and connected to +12 V to force the output transistor “off”.
6. V
SYSTEM PARAMETERS
ELECTRICAL CHARACTERISTICS
over full Operating Temperature Range −40°C to +125°C
LM2596 (Note 1, Test Circuit Figure 15)
ON/OFF PIN LOGIC INPUT
ON/OFF Pin Input Current
Feedback Voltage (V
Feedback Voltage (8.5 V ≤ V
Efficiency (V
Feedback Bias Current (V
Oscillator Frequency (Note 2)
Saturation Voltage (I
Max Duty Cycle “ON” (Note 4)
Current Limit (Peak Current, Notes 2 and 3)
Output Leakage Current (Notes 5 and 6)
Output = 0 V
Output = −1.0 V
Quiescent Current (Note 5)
Standby Quiescent Current (ON/OFF Pin = 5.0 V (“OFF”))
(Note 6)
Threshold Voltage
V
V
ON/OFF Pin = 5.0 V (Regulator OFF)
ON/OFF Pin = 0 V (regulator ON)
out
out
When the LM2596 is used as shown in the Figure 15 test circuit, system performance will be as shown in system parameters section.
voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average dissipation of the IC by
lowering the minimum duty cycle from 5% down to approximately 2%.
in
= 0 V (Regulator OFF)
= Nominal Output Voltage (Regulator ON)
= 40 V.
in
= 12 V, I
out
in
Load
= 12 V, I
= 3.0 A, Notes 3 and 4)
out
= 3.0 A, V
in
= 5.0 V)
Characteristics
Characteristics
≤ 40 V, 0.5 A ≤ I
Load
= 0.5 A, V
out
= 5.0 V)
Specifications with standard type face are for T
out
Load
= 5.0 V, )
≤ 3.0 A, V
http://onsemi.com
out
= 5.0 V)
4
V
Symbol
Symbol
FB_nom
V
V
I
f
DC
V
I
V
stby
osc
I
I
I
I
CL
I
η
IH
FB
sat
IL
Q
b
L
IH
IL
J
= 25°C, and those with boldface type apply
1.193
1.18
Min
Min
135
120
4.2
3.5
2.2
2.4
−
−
−
1.23
0.01
Typ
Typ
150
1.5
5.6
0.5
6.0
5.0
1.6
73
25
95
80
15
1.267
Max
1.28
Max
100
200
165
180
200
250
1.8
2.0
6.9
7.5
2.0
1.0
0.8
5.0
20
10
30
−
Unit
Unit
kHz
mA
mA
nA
mA
mA
mA
%
%
V
V
V
A
V
V
V