TPS71319_07 Datasheet, PDF (1/19 Pages) Texas Instruments – Dual 250 mA Output, UltraLow Noise, High PSRR, Low-Dropout Linear Regulator with Integrated SVS

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Actual Size
(3 mm x 3 mm)
TPS71319
TPS71334
SBVS055A – DECEMBER 2004 – REVISED JANUARY 2005
Dual 250 mA Output, UltraLow Noise, High PSRR,
Low-Dropout Linear Regulator with Integrated SVS
FEATURES
• Dual 250 mA High-Performance RF LDOs
• Integrated Supply Voltage Supervisor
Monitors V_OUT2
• Available in Fixed and Adjustable
Voltage Options (1.2 V to 5.5 V)
• High PSRR: 65 dB at 10 kHz
• UltraLow Noise: 32 µVrms
• Fast Start-Up Time: 60 µs
• Stable with 2.2 µF Ceramic Capacitor
• Excellent Load/Line Transient Response
• Very Low Dropout Voltage: 125 mV at 250 mA
• Independent Enable Pins
• Thermal Shutdown and Independent Current
Limit
• Available in Thermally-Enhanced SON
Package: 3mm x 3mm x 1mm
APPLICATIONS
• Cellular and Cordless Phones
• Wireless PDA/Handheld Products
• PCMCIA/Wireless LAN Applications
• Digital Camera/Camcorder/Internet Audio
• DSP/FPGA/ASIC/Controllers and Processors
DRC PACKAGE
3mm x 3mm SON
(TOP VIEW)
IN 1
RESET 2
OUT1 3
OUT2 4
GND 5
10 EN1
9 NC
8 EN2
7 FB2/NC
6 NR
DESCRIPTION
The TPS713xx family of low-dropout (LDO) voltage
regulators is tailored to noise-sensitive and RF appli-
cations. These products feature dual 250 mA LDOs
with ultralow noise, high power-supply rejection ratio
(PSRR), and fast transient and start-up response.
These devices also feature an integrated supply
voltage supervisor (SVS) that monitors the voltage at
OUT2 and will assert if the voltage falls to 95%
(typical) of the measured output. Each regulator
output is stable with low-cost 2.2 µF ceramic output
capacitors and features very low dropout voltages
(125 mV typical at 250 mA). Each regulator achieves
fast start-up times (approximately 60 µs with a
0.001 µF bypass capacitor) while consuming very low
quiescent current (300 µA typical with both outputs
enabled). When the device is placed in standby
mode, the supply current is reduced to less than
0.3 µA typical. Each regulator exhibits approximately
32 µVrms of output voltage noise with V_OUT = 2.8 V
and a 0.01 µF noise reduction (NR) capacitor. Appli-
cations with analog components that are
noise-sensitive, such as portable RF electronics, will
benefit from high PSRR, low noise, and fast line and
load transient features. The TPS713xx family is
offered in a thin 3mm x 3mm SON package and is
fully specified from -40°C to +125°C (T_J).
PSRR (RIPPLE REJECTION) vs FREQUENCY
80
70
I_OUT = 250 mA
60
50
40
I_OUT = 1 mA
30
20
V_OUT = 2.8 V (adj)
10 ^COUT ^{= 2.2 µF}
C_NR = 0.01 µF
0
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated