STMicroelectronics launches low-noise low-voltage regulator for energy saving
Latest update time：2022-06-03
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June 2, 2022, China - STMicroelectronics' LD56020 200mA low-dropout regulator uses a 1.1V to 5.5V power supply and has low output noise, making it suitable for applications with high requirements for stability and battery life.
The LD56020 is a competitively priced device ideal for mobile devices, vision sensors and wireless connectivity modules, with a very low voltage drop of only 190mV maximum at full load and a maximum quiescent current of 25µA at light load. An
external
enable pin allows the control logic to put the regulator into standby mode, reducing the quiescent current to
less than
0.1µA
.
With a supply voltage rejection (SVRIN) of 90dB (1kHz, 20mA) and output noise of only 8.8
µ
VRMS (10Hz to 100kHz), the LD56020 provides clean power rails for low voltage digital circuits. Only a small ceramic capacitor is required at the input and output of the regulator to stabilize the circuit voltage. Reducing the total number of components required for the design minimizes bill of materials cost, and combined with the regulator's 0.65mm x 0.65mm tiny chip-scale package (CSP), it ensures a compact circuit area with little impact on the size of the printed circuit board.
The regulator integrates protection features including short-circuit current foldback and undervoltage lockout to prevent excessive power dissipation in the event of a system fault, as well as overtemperature protection and an internal discharge path.
The LD56020 is now in production and is available in a CSP-4 chip-scale package.
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