LM2596S-12 National Semiconductor, LM2596S-12 Datasheet - Page 7

• Manufacturer Part Number: LM2596S-12
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2596S-12

• Input Voltage: 40V
• Output Current: 3A
• Output Voltage: 12V
• No. Of Pins: 5
• Termination Type: SMD
• Mounting Type: Through Hole
• Voltage Regulator Type: Buck Switching
• Output Current Max: 3A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Typical Performance Characteristics
Feedback Pin
Bias Current
Typical Performance Characteristics
Continuous Mode Switching Waveforms
V
L = 32 µH, C
A: Output Pin Voltage, 10V/div.
B: Inductor Current 1A/div.
C: Output Ripple Voltage, 50 mV/div.
Load Transient Response for Continuous Mode
V
L = 32 µH, C
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
IN
IN
= 20V, V
= 20V, V
Horizontal Time Base: 100 µs/div.
OUT
OUT
Horizontal Time Base: 2 µs/div.
OUT
OUT
= 5V, I
= 5V, I
= 220 µF, C
= 220 µF, C
LOAD
LOAD
= 2A
= 500 mA to 2A
OUT
OUT
ESR = 50 m
ESR = 50 m
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Discontinuous Mode Switching Waveforms
V
L = 10 µH, C
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 100 mV/div.
Load Transient Response for Discontinuous Mode
V
L = 10 µH, C
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
(Circuit of Figure 1 ) (Continued)
7
IN
IN
= 20V, V
= 20V, V
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Horizontal Time Base: 200 µs/div.
OUT
Horizontal Time Base: 2 µs/div.
OUT
OUT
OUT
= 5V, I
= 5V, I
= 330 µF, C
= 330 µF, C
LOAD
LOAD
= 500 mA
= 500 mA to 2A
OUT
OUT
ESR = 45 m
ESR = 45 m
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