Moteur de recherche de fiches techniques de composants électroniques
  French  ▼

Delete All
ON OFF
ALLDATASHEET.FR

X  

Preview PDF Download HTML

TS1581 Fiches technique(PDF) 4 Page - Taiwan Semiconductor Company, Ltd

No de pièce TS1581
Description  5A Dual Input Low Dropout Positive Voltage Regulator
Download  7 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TSC [Taiwan Semiconductor Company, Ltd]
Site Internet  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

TS1581 Fiches technique(HTML) 4 Page - Taiwan Semiconductor Company, Ltd

  TS1581 Datasheet HTML 1Page - Taiwan Semiconductor Company, Ltd TS1581 Datasheet HTML 2Page - Taiwan Semiconductor Company, Ltd TS1581 Datasheet HTML 3Page - Taiwan Semiconductor Company, Ltd TS1581 Datasheet HTML 4Page - Taiwan Semiconductor Company, Ltd TS1581 Datasheet HTML 5Page - Taiwan Semiconductor Company, Ltd TS1581 Datasheet HTML 6Page - Taiwan Semiconductor Company, Ltd TS1581 Datasheet HTML 7Page - Taiwan Semiconductor Company, Ltd  
Zoom Inzoom in Zoom Outzoom out
 4 / 7 page
background image
TS1581 series
4-4
2003/12 rev. B
Application Information
Application
The TS1581 is a low dropout regulator designed to
make used of multiple power supplies, present in most
systems, to reduce the dropout voltage. One of the
advantages of the two supply approach is maximizing
the efficiency. The second supply is at least 1V greater
than output voltage and is providing the power for the
control circuitry and supplies the drive current to the
NPN output transistor. This allows the NPN output
transistor to be driven into saturation. For the control
voltage the current requirement is small equal to about
1% of the output current or approximately 50mA for a
5A load. This drive current becomes part of the output
current. The maximum voltage on the Control Pin is
15V. The maximum voltage at the Power in is 7V.By
tying the control and power inputs together the TS1581
can also be operated as a single supply device. In
single supply operation the dropout will be determined
by the minimum control voltage.
Both the fixed and adjustable versions have remote
sense pins, permitting very accurate regulation of
output voltage. As a result, over and output current
range of 100mA to 5A, the typical load regulation is
less than 1mV. For the fixed voltages the adjust pin is
brought out allowing the user to improve transient
response by bypassing the internal resistor divider.
Optimum transient response is provided using a
capacitor in the range of 0.1uF to 1uF for bypassing the
adjust pin.
The new generation of microprocessors cycle load
current from several hundred million amperes to
several amperes in tens of nanoseconds. Output
voltage tolerances are tighter and include transient
response as part of the specification. Designed to meet
the fast current load step requirements of these
microprocessors, the TS1581 also saves total cost by
needing less output capacitance to maintain regulation.
Typical applications for the TS1581 include 3.3V to
2.5V conversion with a 5V control supply, 5V to 4.2V
conversion with a 12V control supply or 5V to 3.6V
conversion with a 12V control supply. It is easy to
obtain dropout voltages less than 0.5V at 1.5A along
with excellent static and dynamic specifications. It is
fully
protected
against
over
current
and
over
temperature conditions.
Grounding and Output Sensing
The TS1581 allows true Kelvin sensing for both the
high & low side of the load. A result the voltage
regulation at the load can be easily optimized. Voltage
drops due to parasitic resistances between the
regulator and the load can be placed inside the
regulation loop. The advantages of remote sensing are
illustrated in Figure 1 through 3.
Figure 1 show the device connected as a conventional
3 terminal regulator with the Sense lead connected
directly to the output of the device. Rp is the parasitic
resistance of the connections between the device and
the load. Trace A of Figure 3 illustrates the effect of Rp
Figure 1. Conventional Load Sensing
Figure 2 show the device connected to take advantage
of the remote sense feature. The Sense Pin and the
top of the resistor divider are connected to the top of
the load; the bottom of the resistor divider is connected
to the bottom of the load.
Figure 2. Remote Load Sensing


Html Pages

1  2  3  4  5  6  7 


Fiches technique Télécharger

Go To PDF Page

Numéro de composants électroniques

No de pièceDescriptionHtml ViewFabricant
TS1582 3A Dual Input Low Dropout Positive Voltage Regulator 1  2  3  4  5  More Taiwan Semiconductor Company, Ltd
TS1583 1.5A Dual Input Low Dropout Positive Voltage Regulator 1  2  3  4  5  More Taiwan Semiconductor Company, Ltd
L1581 Dual Input Ultra Low Dropout Voltage Regulator ULDO 1  2  3  4  5  More List of Unclassifed Manufacturers
TS1537 Dual 1A Low Dropout Positive Voltage Regulator 1  2  3  4  5  Taiwan Semiconductor Company, Ltd
LT1585A 5A LOW DROPOUT FAST RESPONSE POSITIVE ADJUSTABLE AND FIXED VOLTAGE REGULATOR 1  2  3  4  5  More ON Semiconductor
LT1086220M05 LOW DROPOUT 1.5 AMP POSITIVE VOLTAGE REGULATOR 1  2  3  Seme LAB
H1117J 1A LOW DROPOUT POSITIVE VOLTAGE REGULATOR 1  2  3  4  5  More Hi-Sincerity Mocroelectronics
PJ1084 5 Amp Low Dropout Positive Voltage Regulator 1  2  3  4  5  More List of Unclassifed Manufacturers
LT3150 Fast Transient Response Low Input Voltage Very Low Dropout Linear Regulator Controller 1  2  3  4  5  More Linear Technology
OM2940STM 0.5 VOLT LOW DROPOUT POSITIVE FIXED VOLTAGE REGULATOR APPROVED TO DESC DRAWING 1  2  3  4  List of Unclassifed Manufacturers

Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn