描述 Description

The TPS723 low-dropout (LDO) negative voltage regulator offers an ideal combination of features to support low noise applications. This device is capable of operating with input voltages from –10 V to –2.7 V, and support outputs from –10 V to –1.2 V. This regulator is stable with small, low-cost ceramic capacitors, and include enable (EN) and noise reduction (NR) functions. Thermal short-circuit and over-current protections are provided by internal detection and shutdown logic. High PSRR (65 dB at 1?kHz) and low noise (60 μVRMS) make the TPS723 ideal for low-noise applications.

The TPS723 uses a precision voltage reference to achieve 2% overall accuracy over load, line, and temperature variations. Available in a small SOT23-5 package, the TPS723 is fully specified over a temperature range of –40°C to 125°C.

特性 Features

? Ultralow noise: 60 μVRMS typical
? High PSRR: 65 dB typical at 1 kHz
? Low dropout voltage: 280 mV typical at 200 mA, 2.5 V
? Available in –2.5-V and adjustable (–1.2 V to –10?V) versions
? Stable with a 2.2-μF ceramic output capacitor
? Less than 2-μA typical quiescent current in shutdown mode
? 2% overall accuracy (line, load, temperature)
? Thermal and over-current protection
? Packages:
? SOT23-5 (DBV)
? SOT23-5 (DDC)
? WSON-6 (DRV)

? Operating junction temperature range: –40°C to 125°C