Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

TPS79328YEQR Datasheet(PDF) 9 Page - Texas Instruments

No. de pieza TPS79328YEQR
Descripción Electrónicos  ULTRALOW-NOISE, HIGH PSRR, FAST RF 200mA LOW-DROPOUT LINEAR REGULATORS IN NanoStar WAFER CHIP SCALE AND SOT23
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS79328YEQR Datasheet(HTML) 9 Page - Texas Instruments

Back Button TPS79328YEQR Datasheet HTML 5Page - Texas Instruments TPS79328YEQR Datasheet HTML 6Page - Texas Instruments TPS79328YEQR Datasheet HTML 7Page - Texas Instruments TPS79328YEQR Datasheet HTML 8Page - Texas Instruments TPS79328YEQR Datasheet HTML 9Page - Texas Instruments TPS79328YEQR Datasheet HTML 10Page - Texas Instruments TPS79328YEQR Datasheet HTML 11Page - Texas Instruments TPS79328YEQR Datasheet HTML 12Page - Texas Instruments TPS79328YEQR Datasheet HTML 13Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 20 page
background image
www.ti.com
Power Dissipation and Junction Temperature
P
D(max) +
T
J max
*TA
R
Q
JA
(1)
P
D
+ VIN*VOUT
I
OUT
(2)
Programming the TPS79301 Adjustable LDO Regulator
V
OUT + VREF
1 )
R
1
R
2
(3)
R
1
+
V
OUT
V
REF
* 1
R
2
(4)
C
1
+
(3 x 10*7) x (R
1
) R2)
(R
1 x R2)
(5)
TPS793xx
SLVS348K – JULY 2001 – REVISED OCTOBER 2007
Specified regulator operation is assured to a junction temperature of +125
°C; the maximum junction temperature
should be restricted to +125
°C under normal operating conditions. This restriction limits the power dissipation the
regulator can handle in any given application. To ensure the junction temperature is within acceptable limits,
calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or
equal to PD(max).
The maximum power dissipation limit is determined using Equation 1:
Where:
• T
Jmax is the maximum allowable junction temperature.
• R
θJA is the thermal resistance junction-to-ambient for the package (see the Dissipation Ratings Table).
• T
A is the ambient temperature.
The regulator dissipation is calculated using Equation 2:
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation triggers the thermal
protection circuit.
The output voltage of the TPS79301 adjustable regulator is programmed using an external resistor divider as
shown in Figure 23. The output voltage is calculated using Equation 3:
Where:
• V
REF = 1.2246V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 50μA divider current. Lower value resistors can be used
for improved noise performance, but the solution consumes more power. Higher resistor values should be
avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially
increases/decreases the feedback voltage and thus erroneously decreases/increases VOUT. The recommended
design procedure is to choose R2 = 30.1kΩ to set the divider current at 50μA, C1 = 15pF for stability, and then
calculate R1 using Equation 4:
In order to improve the stability of the adjustable version, it is suggested that a small compensation capacitor be
placed between OUT and FB. For voltages less than 1.8V, the value of this capacitor should be 100pF. For
voltages greater than 1.8V, the approximate value of this capacitor can be calculated as shown in Equation 5:
The suggested value of this capacitor for several resistor ratios is shown in the table below. If this capacitor is
not used (such as in a unity-gain configuration) or if an output voltage less than 1.8V is chosen, then the
minimum recommended output capacitor is 4.7
μF instead of 2.2μF.
Copyright © 2001–2007, Texas Instruments Incorporated
Submit Documentation Feedback
9


Número de pieza similar - TPS79328YEQR

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS79328YEQR TI-TPS79328YEQR Datasheet
442Kb / 18P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS IN NANOSTAR WAFER CHIP SCALE AND SOT23
TPS79328YEQR TI1-TPS79328YEQR Datasheet
934Kb / 20P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST RF 200mA LOW-DROPOUT LINEAR
TPS79328YEQR TI1-TPS79328YEQR Datasheet
1Mb / 34P
[Old version datasheet]   Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar Wafer Chip Scale and SOT-23
More results

Descripción similar - TPS79328YEQR

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS79301 TI-TPS79301 Datasheet
442Kb / 18P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS IN NANOSTAR WAFER CHIP SCALE AND SOT23
TPS793 TI1-TPS793_16 Datasheet
1Mb / 34P
[Old version datasheet]   Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar Wafer Chip Scale and SOT-23
TPS793 TI1-TPS793_17 Datasheet
1Mb / 33P
[Old version datasheet]   Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar Wafer Chip Scale and SOT-23
TPS793 TI1-TPS793_V01 Datasheet
1Mb / 34P
[Old version datasheet]   TPS793 Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar??Wafer Chip Scale and SOT-23
TPS79333 TI-TPS79333_15 Datasheet
918Kb / 28P
[Old version datasheet]   TPS793 Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar??Wafer Chip Scale and SOT-23
TPS793 TI-TPS793_15 Datasheet
918Kb / 28P
[Old version datasheet]   TPS793 Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators in NanoStar??Wafer Chip Scale and SOT-23
TPS79328YZQR TI1-TPS79328YZQR Datasheet
934Kb / 20P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST RF 200mA LOW-DROPOUT LINEAR
TPS796XX TI-TPS796XX_08 Datasheet
1Mb / 25P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST, RF, 1A LOW-DROPOUT LINEAR REGULATORS
TPS79118-Q1 TI-TPS79118-Q1 Datasheet
900Kb / 21P
[Old version datasheet]   ULTRALOW NOISE,HIGH PSRR,FAST RF 100MA LOW-DROPOUT LINEAR REGULATORS
TPS796 TI1-TPS796_14 Datasheet
1Mb / 31P
[Old version datasheet]   Ultralow-Noise, High PSRR, Fast, RF, 1A Low-Dropout Linear Regulators
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
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