Industry’s first –36-V LDO powers precision analog apps

Industry’s first –36-V LDO powers precision analog apps

The TPS7A30 is the industry’s first –36-V low-dropout regulator, and when paired with the positive voltage TPS7A49 provides a complete solution for powering precision analog applications. The devices feature output noise as low as 16 uVrms and 72 dB power supply ripple rejection at 1 kHz, and 55 dB at 10 to 700 kHz. The TPS7A30 generates -36-V and -200 mA output, while the TPS7A49 provides 36 V and 150 mA.

The TPS7A30 and TPS7A49 linear regulator family is stable with any output capacitance greater than 2.2 µF. The LDOs come in an adjustable version with an output voltage ranging from 1.22 to 34 V. The LDOs are designed for noise-sensitive applications such as test equipment; industrial, networking and telecom equipment; base stations; microwave and radio links; noise filtering for receive, transmit, and power amplifiers; and medical equipment.

The TPS7A30 features a –3.0 to –36-V input voltage and the TPS7A49 has +3.0 to +36 V. They have a 1.5% nominal accuracy over load, line, and temperature. Find a datasheet at http://focus.ti.com/lit/ds/symlink/tps7a3001.pdf. (Ea/1,000: TPS7A30, $1.50; TPS7A49, $1.10; evaluation module, $20 — available now.)

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