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

X  

TPS71812-33DRVRG4 Fiches technique(PDF) 10 Page - Texas Instruments

No de pièce TPS71812-33DRVRG4
Description  Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS71812-33DRVRG4 Fiches technique(HTML) 10 Page - Texas Instruments

Back Button TPS71812-33DRVRG4 Datasheet HTML 6Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 7Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 8Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 9Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 10Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 11Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 12Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 13Page - Texas Instruments TPS71812-33DRVRG4 Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 24 page
background image
APPLICATION INFORMATION
Board Layout Recommendations to Improve
Internal Current Limit
TPS718xx
TPS719xx
GND
EN1
EN2
OUT2
IN
OUT1
V
IN
V
OUT
V
OUT
1 F
m
1 F
m
1 F
m
2.7V
6.5V
-
0.9V
3.6V
-
0.9V
3.6V
-
On
Off
On
Off
Shutdown
Input and Output Capacitor Requirements
t=3
60
R
L
´
60+R
L
C
OUT
´
Dropout Voltage
TPS718xx
TPS719xx
SBVS088C – FEBRUARY 2007 – REVISED MAY 2008..................................................................................................................................................... www.ti.com
The TPS718xx/TPS719xx belong to a family of new
generation
LDO
regulators
that
use
innovative
PSRR and Noise Performance
circuitry to achieve ultra-wide bandwidth and high
loop gain, resulting in extremely high PSRR (up to
To improve ac performance such as PSRR, output
1MHz) at very low headroom (VIN – VOUT). These
noise, and transient response, it is recommended that
features, combined with low noise, two independent
the board be designed with separate ground planes
enables, low ground pin current and ultra-small
for VIN and VOUT, with each ground plane connected
packaging,
make
this
part
ideal
for
portable
only at the GND pin of the device. In addition, the
applications.
This
family
of
regulators
offer
ground connection for the output capacitor should
sub-bandgap
output
voltages,
current
limit
and
connect directly to the GND pin of the device. High
thermal protection, and is fully specified from –40
°C
ESR capacitors may degrade PSRR.
to +125
°C.
Figure 22 shows the basic circuit connections.
The TPS718xx/TPS719xx internal current limits help
protect the regulator during fault conditions. During
current limit, the output sources a fixed amount of
current that is largely independent of output voltage.
For reliable operation, the device should not be
operated in a current limit state for extended periods
of time.
The PMOS pass element in the TPS718xx/TPS719xx
has a built-in body diode that conducts current when
the voltage at OUT exceeds the voltage at IN. This
current is not limited, so if extended reverse voltage
operation is anticipated, external limiting to 5% of
rated output current may be appropriate.
Figure 22. Typical Application Circuit
The enable pin (EN) is active high and is compatible
with standard and low voltage, TTL-CMOS levels.
Although an input capacitor is not required for
When shutdown capability is not required, EN can be
stability, it is good analog design practice to connect
connected to IN. The TPS719 with internal active
a 0.1
µF to 1.0µF low equivalent series resistance
output pulldown circuitry discharges the output with a
(ESR) capacitor across the input supply near the
time constant (t) of:
regulator. This capacitor counteracts reactive input
sources and improves transient response, noise
rejection,
and
ripple
rejection.
A
higher-value
capacitor may be necessary if large, fast rise-time
load transients are anticipated or if the device is
located
close
to
the
power
source.
If
source
with:
impedance is not sufficiently low, a 0.1
µF input
RL = output load resistance
capacitor may be necessary to ensure stability.
COUT = output capacitance
The TPS718xx/TPS719xx are designed to be stable
with standard ceramic capacitors of values 1.0
µF or
larger at the output. X5R- and X7R-type capacitors
The
TPS718xx/TPS719xx
use
a
PMOS
pass
are best because they have minimal variation in value
transistor to achieve low dropout. When (VIN – VOUT)
and ESR over temperature. Maximum ESR should be
is less than the dropout voltage (VDO), the PMOS
<1.0
Ω.
pass device is in its linear region of operation and the
input-to-output resistance is the RDS(ON) of the PMOS
pass element. VDO approximately scales with output
current because the PMOS device behaves like a
resistor in dropout.
10
Submit Documentation Feedback
Copyright © 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS718xx TPS719xx


Numéro de pièce similaire - TPS71812-33DRVRG4

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
TPS71812-33DRVRG4 TI-TPS71812-33DRVRG4 Datasheet
774Kb / 23P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
TPS71812-33DRVRG4 TI-TPS71812-33DRVRG4 Datasheet
849Kb / 23P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
More results

Description similaire - TPS71812-33DRVRG4

FabricantNo de pièceFiches techniqueDescription
logo
Texas Instruments
TPS71812 TI-TPS71812 Datasheet
774Kb / 23P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
TPS718XX TI1-TPS718XX_16 Datasheet
1Mb / 26P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
TPS718XX TI-TPS718XX_08 Datasheet
849Kb / 23P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
TPS718XX TI1-TPS718XX_17 Datasheet
1Mb / 26P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators
TPS72301 TI1-TPS72301_16 Datasheet
1Mb / 25P
[Old version datasheet]   200mA Low-Noise, High-PSRR Negative Output Low-Dropout Linear Regulators
logo
ams AG
AS1374 AMSCO-AS1374_04 Datasheet
1Mb / 19P
   Dual 200mA, Low-Noise, High-PSRR, Low Dropout Regulators
logo
Texas Instruments
TPS72301 TI1-TPS72301_V01 Datasheet
1Mb / 25P
[Old version datasheet]   TPS723xx 200mA Low-Noise, High-PSRR Negative Output Low-Dropout Linear Regulators
TPS723 TI-TPS723_15 Datasheet
1Mb / 25P
[Old version datasheet]   TPS723xx 200mA Low-Noise, High-PSRR Negative Output Low-Dropout Linear Regulators
logo
ams AG
AS1374 AMSCO-AS1374 Datasheet
2Mb / 14P
   200mA, Ultra-Low-Noise, High-PSRR, Dual Low Dropout Regulators
logo
Texas Instruments
TPS718XX TI-TPS718XX Datasheet
506Kb / 15P
[Old version datasheet]   Dual, 200mA Output, Low Noise, High PSRR Low-Dropout Linear Regulators in 2mm x 2mm SON Package
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


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