1FEATURES
• 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 VOUT = 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 (TJ).