描述 Description

The TPS71202 low-dropout (LDO) voltage regulator is tailored to noise-sensitive and RF applications. It features dual 250-mA LDOs with ultra-low 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). The 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. The regulator exhibits approximately 32 μVrms of output voltage noise with VOUT = 2.8 V and a 0.01-μF noise reduction (NR) capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from high PSRR, low noise, and fast line and load transient features. The TPS71202 is offered in a thin 3-mm × 3-mm SON package and is fully specified from ?55°C to 125°C (TJ).

特性 Features

? Dual 250-mA High-Performance RF LDOs
? Adjustable Output Voltage (1.2 V to 5.5 V)
? High PSRR: 65 dB at 10 kHz
? Ultra-Low 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: 3 mm × 3 mm × 1 mm
? APPLICATIONS
- Cellular and Cordless Phones
? Wireless PDA/Handheld Products
? PCMCIA/Wireless LAN Applications
? Digital Camera/Camcorder/Internet Audio
? DSP/FPGA/ASIC/Controllers and Processors
? SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
- Controlled Baseline
? One Assembly/Test Site
? One Fabrication Site
? Available in Military (?55°C/125°C) Temperature Range
? Extended Product Life Cycle
? Extended Product-Change Notification
? Product Traceability

Custom temperature ranges available