LM2596S-3.3 National Semiconductor, LM2596S-3.3 Datasheet - Page 27
LM2596S-3.3
Manufacturer Part Number
LM2596S-3.3
Description
SWITCHING REG, 3A 3.3V, SMD, 2596
Manufacturer
National Semiconductor
Datasheet
1.LM2596T-12.pdf
(31 pages)
Specifications of LM2596S-3.3
Primary Input Voltage
12V
No. Of Outputs
1
Output Voltage
3.3V
Output Current
3A
Voltage Regulator Case Style
TO-263
No. Of Pins
5
Operating Temperature Range
-40°C To +125°C
Svhc
No SVHC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2596S-3.3
Manufacturer:
LM
Quantity:
20 000
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.
01258342
01258343
www.national.com