TPS71202DRCT Datasheet, PDF (1/21 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
SBVS049D – MAY 2004 – REVISED AUGUST 2010
Dual 250 mA Output, UltraLow Noise, High PSRR,
Low-Dropout Linear Regulator
Check for Samples: TPS71202, TPS71219, TPS71229, TPS71247, TPS71256, TPS71257
FEATURES
1
• 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 mVrms
• Fast Start-Up Time: 60 ms
• Stable with 2.2 mF 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
DESCRIPTION
The TPS712xx family of low-dropout (LDO) voltage
regulators is tailored to noise-sensitive and RF
applications. 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 mF ceramic output capacitors and
features very low dropout voltages (125 mV typical at
250 mA). Each regulator achieves fast start-up times
(approximately 60 ms with a 0.001 mF bypass
capacitor) while consuming very low quiescent
current (300 mA typical with both outputs enabled).
When the device is placed in standby mode, the
supply current is reduced to less than 0.3 mA typical.
Each regulator exhibits approximately 32 mVrms of
output voltage noise with V_OUT = 2.8 V and a 0.01 mF
noise reduction (NR) capacitor. Applications 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 TPS712 family is offered in a thin 3mm x 3mm
SON package and is fully specified from -40°C to
+125°C (T_J).
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
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)
1
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 © 2004–2010, Texas Instruments Incorporated