TPS71202 Datasheet, PDF (1/15 Pages) Texas Instruments – Dual 250 mA Output, UltraLow Noise, High PSRR, Low-Dropout Linear Regulator

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Actual Size
(3 mm x 3 mm)
TPS71202, TPS71219
TPS71229, TPS71247
TPS71256, TPS71257
SBVS049B – MAY 2004 – REVISED MARCH 2005
Dual 250 mA Output, UltraLow Noise, High PSRR,
Low-Dropout Linear Regulator
FEATURES
• Dual 250 mA High-Performance RF LDOs
• 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
NC 2
OUT1 3
OUT2 4
GND 5
10 EN1
9 FB1/NC
8 EN2
7 FB2/NC
6 NR
DESCRIPTION
The TPS712xx 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.
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 re-
duced 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. Applications with analog
components that are noise-sensitive, such as port-
able RF electronics, will benefit from high PSRR, low
noise, and fast line and load transient features. The
TPS712 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
10 C_OUT = 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