LM2596S-12 National Semiconductor, LM2596S-12 Datasheet - Page 27
LM2596S-12
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2596S-12
Manufacturer:
CG
Quantity:
20 000
Company:
Part Number:
LM2596S-12/NOPB
Manufacturer:
MICROCHIP
Quantity:
1 450
Application Information
INVERTING REGULATOR SHUTDOWN METHODS
To use the ON /OFF pin in a standard buck configuration is
simple, pull it below 1.3V (
turn regulator ON, pull it above 1.3V to shut the regulator
FIGURE 28. Inverting Regulator Ground Referenced Shutdown using Opto Device
@
25˚C, referenced to ground) to
FIGURE 27. Inverting Regulator Ground Referenced Shutdown
(Continued)
27
OFF. With the inverting configuration, some level shifting is
required, because the ground pin of the regulator is no
longer at ground, but is now setting at the negative output
voltage level. Two different shutdown methods for inverting
regulators are shown in Figure 27 and 28.
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