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PDF LA5744 Data sheet ( Hoja de datos )
| Número de pieza | LA5744 | |
| Descripción | Separately-Excited Step-Down Switching Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LA5744 (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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Ordering number : ENA0717C
LA5744
Monolithic Linear IC
Separately-Excited Step-Down
Switching Regulator
(Variable Type)
http://onsemi.com
Overview
The LA5744 is a separately-excited step-down switching regulator (variable type).
Functions
• High efficiency.
• Time-base generator (300kHz) incorporated.
• Current limiter incorporated.
• Thermal shutdown circuit incorporated.
• Soft start circuit incorporated.
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Input voltage
Maximum output current
SW pin application reverse voltage
Allowable power dissipation
VIN
IO max
VSW
Pd max1
No heat sink
Pd max2
Infinite heat sink
Operating temperature
Topr
Storage temperature
Tstg
Junction temperature
Tj max
* Specified circuit board : 76.1×114.3×1.6mm3 : Copper foil ratio 60% FR4
Ratings
30
3
-1
1.75
7.5
-30 to +125
-40 to +150
150
Unit
V
A
V
W
W
°C
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Conditions at Ta = 25°C
Parameter
Input voltage range
Symbol
VIN
Conditions
Ratings
4.5 to 28
Unit
V
Semiconductor Components Industries, LLC, 2013
August, 2013
52307 MS PC 20070522-S00004 / 42507 MS PC / 31407 MS PC / 30707 MS PC No.A0717-1/5
1 page  
Timing Chart
VIN voltage
SWOUT voltage
1.23V
0.8V
VOS voltage 0V
Td
LA5744
30kHz
300kHz
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at
www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the
application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use
as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for
any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the
part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PS No.A0717-5/5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet LA5744.PDF ] | |
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