Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

CS8156 Fiches technique(PDF) 8 Page - ON Semiconductor

No de pièce CS8156
Description  12 V, 5.0 V Low Dropout Dual Regulator with ENABLE
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS8156 Fiches technique(HTML) 8 Page - ON Semiconductor

Back Button CS8156 Datasheet HTML 3Page - ON Semiconductor CS8156 Datasheet HTML 4Page - ON Semiconductor CS8156 Datasheet HTML 5Page - ON Semiconductor CS8156 Datasheet HTML 6Page - ON Semiconductor CS8156 Datasheet HTML 7Page - ON Semiconductor CS8156 Datasheet HTML 8Page - ON Semiconductor CS8156 Datasheet HTML 9Page - ON Semiconductor CS8156 Datasheet HTML 10Page - ON Semiconductor CS8156 Datasheet HTML 11Page - ON Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 8 / 11 page
background image
CS8156
http://onsemi.com
8
appear. Record the values of load current and ESR that cause
the greatest oscillation. This represents the worst case load
conditions for the regulator at low temperature.
Step 4: Maintain the worst case load conditions set in step
3 and vary the input voltage until the oscillations increase.
This point represents the worst case input voltage
conditions.
Step 5: If the capacitor is adequate, repeat steps 3 and 4 with
the next smaller valued capacitor. A smaller capacitor will
usually cost less and occupy less board space. If the output
oscillates within the range of expected operating conditions,
repeat steps 3 and 4 with the next larger standard capacitor
value.
Step 6: Test the load transient response by switching in
various loads at several frequencies to simulate its real
working environment. Vary the ESR to reduce ringing.
Step 7: Raise the temperature to the highest specified
operating temperature. Vary the load current as instructed in
step 5 to test for any oscillations.
Once the minimum capacitor value with the maximum
ESR is found for each output, a safety factor should be added
to allow for the tolerance of the capacitor and any variations
in regulator performance. Most good quality aluminum
electrolytic capacitors have a tolerance of
±20% so the
minimum value found should be increased by at least 50%
to allow for this tolerance plus the variation which will occur
at low temperatures. The ESR of the capacitors should be
less than 50% of the maximum allowable ESR found in step
3 above.
Repeat steps 1 through 7 with C3, the capacitor on the
other output.
Calculating Power Dissipation in a
Dual Output Linear Regulator
The maximum power dissipation for a dual output
regulator (Figure 20) is
PD(max) + VIN(max) * VOUT1(min) IOUT1(max) )
VIN(max) * VOUT2(min) IOUT2(max) ) VIN(max)IQ (1)
where:
VIN(max) is the maximum input voltage,
VOUT1(min) is the minimum output voltage from VOUT1,
VOUT2(min) is the minimum output voltage from VOUT2,
IOUT1(max) is the maximum output current, for the
application,
IOUT2(max) is the maximum output current, for the
application, and
IQ is the quiescent current the regulator consumes at
IOUT(max).
Once the value of PD(max) is known, the maximum
permissible value of RΘJA can be calculated:
R
QJA +
150
°C * TA
PD
(2)
The value of RΘJA can be compared with those in the
package section of the data sheet. Those packages with
RΘJA’s less than the calculated value in equation 2 will keep
the die temperature below 150
°C.
In some cases, none of the packages will be sufficient to
dissipate the heat generated by the IC, and an external
heatsink will be required.
Figure 20. Dual Output Regulator With Key
Performance Parameters Labeled.
Smart
Regulator
Control
Features
VOUT1
IOUT1
VOUT2
IOUT2
VIN
IIN
IQ
Heat Sinks
A heat sink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and the
outside environment will have a thermal resistance. Like
series electrical resistances, these resistances are summed to
determine the value of RΘJA:
R
QJA + RQJC ) RQCS ) RQSA
(3)
where:
RΘJC = the junction−to−case thermal resistance,
RΘCS = the case−to−heatsink thermal resistance, and
RΘSA = the heatsink−to−ambient thermal resistance.
RΘJC appears in the package section of the data sheet. Like
RΘJA, it too is a function of package type. RΘCS and RΘSA
are functions of the package type, heatsink and the interface
between them. These values appear in heat sink data sheets
of heat sink manufacturers.
Figure 21. Test & Application Circuit
CS8156
VOUT1
VOUT2
ENABLE
GND
VIN
+
+
* C1 is required if the regulator is far from power supply filter.
** C2, C3 required for stability.
C1*
0.1
μF
C2**
22
μF
C3**
22
μF


Numéro de pièce similaire - CS8156

FabricantNo de pièceFiches techniqueDescription
logo
Cherry Semiconductor Co...
CS8156 CHERRY-CS8156 Datasheet
172Kb / 8P
   12V, 5V Low Dropout Dual Regulator with ENABLE
logo
ON Semiconductor
CS8156 ONSEMI-CS8156 Datasheet
3Mb / 4P
   AC-DC Offline Switching Controllers/Regulators
Rev.0, Jun-2005
logo
Cherry Semiconductor Co...
CS8156YT5 CHERRY-CS8156YT5 Datasheet
172Kb / 8P
   12V, 5V Low Dropout Dual Regulator with ENABLE
CS8156YTHA5 CHERRY-CS8156YTHA5 Datasheet
172Kb / 8P
   12V, 5V Low Dropout Dual Regulator with ENABLE
CS8156YTVA5 CHERRY-CS8156YTVA5 Datasheet
172Kb / 8P
   12V, 5V Low Dropout Dual Regulator with ENABLE
More results

Description similaire - CS8156

FabricantNo de pièceFiches techniqueDescription
logo
ON Semiconductor
CS8161 ONSEMI-CS8161 Datasheet
97Kb / 11P
   12 V, 5.0 V Low Dropout Dual Regulator with ENABLE
June, 2006 ??Rev. 7 1
CS8147 ONSEMI-CS8147 Datasheet
85Kb / 12P
   10 V/5.0 V Low Dropout Dual Regulator with ENABLE
January, 2001 ??Rev. 6
CS8361 ONSEMI-CS8361 Datasheet
163Kb / 8P
   5.0 V Dual Micropower Low Dropout Regulator with ENABLE and RESET
October, 2009 ??Rev. 17
CS8481 ONSEMI-CS8481 Datasheet
50Kb / 6P
   3.3 V/250 mA, 5.0 V/100 mA Micropower Low Dropout Regulator with ENABLE
January, 2004 ??Rev. 9
CS8101 ONSEMI-CS8101_09 Datasheet
149Kb / 11P
   Micropower 5.0 V, 100 mA Low Dropout Linear Regulator with RESET and ENABLE
September, 2008 ??Rev. 19
CS8101 ONSEMI-CS8101 Datasheet
127Kb / 13P
   Micropower 5.0 V, 100 mA Low Dropout Linear Regulator with RESET and ENABLE
February, 2006 ??Rev. 18
CS8363 ONSEMI-CS8363 Datasheet
69Kb / 8P
   3.3 V Dual Micropower Low Dropout Regulator with ENABLE and RESET
January, 2004 ??Rev. 9
CS8363 ONSEMI-CS8363_05 Datasheet
64Kb / 8P
   3.3 V Dual Micropower Low Dropout Regulator with ENABLE and RESET
March, 2005 ??Rev. 10
logo
Allegro MicroSystems
SI-3050KM ALLEGRO-SI-3050KM Datasheet
350Kb / 9P
   1 A, Low-Dropout, 5.0 V Regulator
logo
ON Semiconductor
NCV4275A ONSEMI-NCV4275A Datasheet
170Kb / 19P
   5.0 V, 3.3 V 450 mA Low-Dropout Voltage Regulator with Reset
April, 2010 ??Rev. 3
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


Fiches technique Télécharger

Go To PDF Page


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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com