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

X  

TPS78618KTTT Datasheet(PDF) 8 Page - Texas Instruments

No. de pieza TPS78618KTTT
Descripción Electrónicos  ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A LOW-DROPOUT LINEAR REGULATORS
Download  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS78618KTTT Datasheet(HTML) 8 Page - Texas Instruments

Back Button TPS78618KTTT Datasheet HTML 4Page - Texas Instruments TPS78618KTTT Datasheet HTML 5Page - Texas Instruments TPS78618KTTT Datasheet HTML 6Page - Texas Instruments TPS78618KTTT Datasheet HTML 7Page - Texas Instruments TPS78618KTTT Datasheet HTML 8Page - Texas Instruments TPS78618KTTT Datasheet HTML 9Page - Texas Instruments TPS78618KTTT Datasheet HTML 10Page - Texas Instruments TPS78618KTTT Datasheet HTML 11Page - Texas Instruments TPS78618KTTT Datasheet HTML 12Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 21 page
background image
www.ti.com
APPLICATION INFORMATION
BOARD LAYOUT RECOMMENDATIONS TO
TPS786xx
GND
EN
NR
IN
OUT
V
IN
V
OUT
0.1
µF
0.01
µF
2.2
µF
EXTERNAL CAPACITOR REQUIREMENTS
REGULATOR MOUNTING
TPS786xx
SLVS389G – SEPTEMBER 2002 – REVISED JULY 2006
because any leakage current creates an IR drop
The
TPS786xx
family
of
low-dropout
(LDO)
across the internal resistor, thus creating an output
regulators
has
been
optimized
for
use
in
error. Therefore, the bypass capacitor must have
noise-sensitive
equipment.
The
device
features
minimal leakage current. The bypass capacitor
extremely low dropout voltages, high PSRR, ultralow
should be no more than 0.1-
µF to ensure that it is
output
noise,
low
quiescent
current
(265
µA,
fully charged during the quickstart time provided by
typically), and enable input to reduce supply currents
the internal switch shown in the functional block
to less than 1
µA when the regulator is turned off.
diagram.
A typical application circuit is shown in Figure 24.
For example, the TPS78630 exhibits only 48
µV
RMS
of output voltage noise using a 0.1-
µF ceramic
bypass capacitor and a 10-
µF ceramic output
capacitor. Note that the output starts up slower as
the bypass capacitance increases due to the RC
time constant at the bypass pin that is created by the
internal 250-k
Ω resistor and external capacitor.
IMPROVE PSRR AND NOISE
PERFORMANCE
Figure 24. Typical Application Circuit
To improve ac measurements like PSRR, output
noise, and transient response, it is recommended
that the board be designed with separate ground
planes for VIN and VOUT, with each ground plane
A 2.2-
µF or larger ceramic input bypass capacitor,
connected only at the ground pin of the device. In
connected between IN and GND and located close
addition, the ground connection for the bypass
to the TPS786xx, is required for stability and
capacitor should connect directly to the ground pin of
improves transient response, noise rejection, and
the device.
ripple rejection. A higher-value input capacitor may
be necessary if large, fast-rise-time load transients
are anticipated and the device is located several
inches from the power source.
The tab of the SOT223-6 package is electrically
connected to ground. For best thermal performance,
Like most low-dropout regulators, the TPS786xx
the tab of the surface-mount version should be
requires an output capacitor connected between
soldered directly to a circuit-board copper area.
OUT and GND to stabilize the internal control loop.
Increasing
the
copper
area
improves
heat
The minimum recommended capacitor is 1
µF. Any
dissipation.
1
µF or larger ceramic capacitor is suitable.
Solder
pad
footprint
recommendations
for
the
The internal voltage reference is a key source of
devices
are
presented
in
Application
Report
noise in an LDO regulator. The TPS786xx has an
SBFA015,
Solder
Pad
Recommendations
for
NR pin which is connected to the voltage reference
Surface-Mount Devices, available from the TI web
through a 250-k
Ω internal resistor. The 250-kΩ
site at www.ti.com.
internal resistor, in conjunction with an external
bypass capacitor connected to the NR pin, creates a
low pass filter to reduce the voltage reference noise
and, therefore, the noise at the regulator output. In
order for the regulator to operate properly, the
current flow out of the NR pin must be at a minimum,
8
Submit Documentation Feedback


Número de pieza similar - TPS78618KTTT

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS78618KTTT TI1-TPS78618KTTT Datasheet
1Mb / 29P
[Old version datasheet]   ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A LOW-DROPOUT LINEAR REGULATORS
TPS78618KTTT TI1-TPS78618KTTT Datasheet
1Mb / 37P
[Old version datasheet]   Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators
TPS78618KTTTG3 TI1-TPS78618KTTTG3 Datasheet
1Mb / 29P
[Old version datasheet]   ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A LOW-DROPOUT LINEAR REGULATORS
TPS78618KTTTG3 TI1-TPS78618KTTTG3 Datasheet
1Mb / 37P
[Old version datasheet]   Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators
More results

Descripción similar - TPS78618KTTT

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS78601 TI-TPS78601 Datasheet
559Kb / 17P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST RF 1.5 A LOW-DROPOUT LINEAR REGULATORS
TPS78601DRBR TI1-TPS78601DRBR Datasheet
1Mb / 29P
[Old version datasheet]   ULTRALOW-NOISE, HIGH-PSRR, FAST, RF, 1.5-A LOW-DROPOUT LINEAR REGULATORS
TPS786 TI1-TPS786_16 Datasheet
1Mb / 37P
[Old version datasheet]   Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators
TPS786 TI-TPS786_15 Datasheet
1Mb / 37P
[Old version datasheet]   TPS786 Ultralow-Noise, High-PSRR, Fast, RF, 1.5-A Low-Dropout Linear Regulators
TPS79601 TI-TPS79601 Datasheet
560Kb / 18P
[Old version datasheet]   ULTRALOW-NOISE, HIGH PSRR, FAST RF 1-A LOW-DROPOUT LINEAR REGULATORS
TPS79633-Q1 TI1-TPS79633-Q1 Datasheet
779Kb / 19P
[Old version datasheet]   Ultralow-Noise, High-PSRR, Fast, RF, 1-A LOW-DROPOUT LINEAR REGULATORS
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
TPS79601DRBR TI1-TPS79601DRBR Datasheet
1Mb / 30P
[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 21


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