TPS71921-22 - 200mA 输出、低噪声、高 PSRR、低压降双路稳压器

TPS71921-22是TI德州仪器公司的一款多通道LDO产品，TPS71921-22是200mA 输出、低噪声、高 PSRR、低压降双路稳压器，本站介绍了TPS71921-22的封装应用图解、特点和优点、功能等，并给出了与TPS71921-22相关的TI元器件型号供参考。

TPS71921-22 - 200mA 输出、低噪声、高 PSRR、低压降双路稳压器 - 多通道LDO - 线性稳压器(LDO) - 德州仪器

产品描述

The TPS718xx and TPS719xx families of low-dropout (LDO) regulators offer a high power-supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient responses while consuming a very low 90µA (typical) at no load ground current with both LDOs enabled. The TPS719xx also provides an active pulldown circuit to quickly discharge output loads. The TPS718xx and TPS719xx are stable with ceramic capacitors and use an advanced BiCMOS fabrication process to yield a typical dropout voltage of 230mV at 200mA output loads. The TPS718xx and TPS719xx also use a precision voltage reference and feedback loop to achieve 3% overall accuracy over all load, line, process, and temperature variations. Both families of devices are fully specified from TJ = -40°C to +125°C and are offered in 2mm × 2mm SON-6 and 6-ball Wafer Chip-Scale (WCSP) packages that are ideal for applications such as mobile handsets and WLAN that require good thermal dissipation while maintaining a very small footprint.

产品特性

Dual, 200mA High-Performance LDOs
Low Total Quiescent Current: 90µA with Both LDOs Enabled
Low Noise: 70µVRMS/V
Active Output Pulldown (TPS719xx)
Independent Enables for Each LDO
PSRR: 65dB at 1kHz, 45dB at 1MHz
Available in Multiple Fixed-Output Voltage Combinations from 0.9V to 3.6V Using Innovative Factory EEPROM Programming
Fast Start-Up Time: 160µs
Over-Current, Over-Temperature and Under-Voltage Protection
Low Dropout: 230mV at 200mA
Stable with 1µF Ceramic Output Capacitor
Available in 2mm × 2mm SON-6 and 6-Ball WCSP Packages
APPLICATIONS
- Digital Cameras and Camera Modules
- Cellular Camera and TV Phones
- Wireless LAN, Bluetooth
- Handheld Products

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