Regulator

STMicroelectronics (Coppell, TX) has introduced the LDBL20, a 200mA Low-Dropout (LDO) regulator in a 0.47 × 0.47 × 0.2 mm chip-scale package. The LDBL20 features a 200mA output. Input voltage ranges from 1.5V to 5.5V, with 200mV typical dropout. Rejection (PSRR) of 80dB at 100Hz and 50dB at 100kHz simplifies filtering over a wide frequency range. The device has a quiescent current of 20μA no-load, 100μA full-load, and 0.3μA in standby. Output voltages are available on request, from 0.8V up to 5.0V in 50mV increments. Built-in features include logic-controlled electronic shutdown, internal soft-start, and support for active output-voltage discharge if required.

An evaluation board supports the design of fitness and blood-pressure monitors, glucose meters, hearing aids, wearable sensors, smart headphones, portable audio devices, smart plugs, and smart watches.

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