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LA5779 View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
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LA5779 Datasheet PDF : 4 Pages
1 2 3 4
Ordering number : ENA0476A
LA5779
Monolithic Linear IC
Separately-excited Step-down
Switching Regulator
(Variable Type)
Overview
The LA5779 is a Separately-excited step-down switching regulator (variable type).
Functions
High efficiency.
Six external parts.
Time-base generator (160kHz) incorporated.
Current limiter incorporated.
Thermal shutdown circuit incorporated.
ON/OFF function.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum Input voltage
Maximum Output current
SW pin application reverse voltage
Allowable power dissipation
Symbol
VIN max
IO max
VSW
Pd max1
Pd max2
Conditions
Infinitely large heat sink.
Independent IC.
Operating temperature
Topr
Storage temperature
Tstg
Junction temperature
Tj max
Ratings
Unit
30
V
3
A
-1
V
7.5
W
1.75
W
-30 to +125
°C
-40 to +150
°C
150
°C
Recommended Operating Conditions at Ta = 25°C
Parameter
Input voltage range
Symbol
VIN
Conditions
Ratings
Unit
4.5 to 28
V
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
62707 MS PC 20070619-S00001 / N1306 MS PC 20060606-S00001 No.A0476-1/4
 

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