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Voltage Regulator

Voltage regulators are vital for maintaining power stability in electronic devices. Recent innovations offer improved thermal performance, smaller footprints, and higher efficiency for applications in electric vehicles, IoT devices, and SBCs. Leading manufacturers like TI, Rohm, and Analog Devices are releasing regulators tailored for low-noise, high-current, or ultra-low dropout operations. Design engineers benefit from tools and reference designs that ease implementation. With growing demands in wearable tech, industrial control, and mobile devices, Electronics Weekly tracks voltage regulator trends, new product releases, and market outlook.

Automotive low drop regulator

Diodes AP7369 automotive low drop regulator block diagram

AP7369Q is a series of 45V input low-drop-out linear regulators from Diodes that can provide up to 150mA to a load. Quiescent current can be as low as 2.1µA and, depending on variant, the output is fixed at 2.5V, 3.3V or 5V. “The device provides a very fast response against line voltage transient and load current transient, and ensures no ...

300mA LDOs in 1mm package

Toshiba TCR3LM tiny LDOs market pic

Toshiba has announced 300mA LDOs in a 1 x 1 x 0.37mm DFN4D package. Quiescent current is typically 1.2μA with no load. They are “specifically aimed at applications powered by small-scale batteries [including] IoT modules, communications modules, wearable devices and other miniature equipment”, according to the company. There are over 30 devices spanning outputs of 0.8 to 5.0V, with an ...

LDO suits 12V and 24V automotive power

Diodes AP7387Q automotive LDO

Diodes has introduced AP7387Q, an LDO linear voltage regulator with a 5V to 60V input range and typically 700mV at a 100mA output current. “Thanks to its wide input voltage, the AP7387Q meets the load dump specifications of 12V internal combustion engine vehicles such as cars and 24V combustion engine vehicles such as buses, coaches, and trucks”, the company said. ...

Chip-scale LDO has low noise and works down to 1.1V

STM LD56020 LDO

STMicroelectronics’ LD56020 is a 200mA linear voltage regulator that will operate from 1.1 to 5.5V, and has 8.8µVrms output noise (10Hz – 100kHz) and 90dB supply-voltage rejection (1kHz 20mA). There are six output options: 1.0, 1.1, 1.2, 1.8, 3.0 or 3.3V, with 190mV maximum drop-out at 200mA full load – and custom versions outputting from 0.6 to 4.0V can be made in 50mV steps. Max ...

Configurable automotive LDOs include functional safety features

STM L99vr01VR01J LDO

STMicroelectronics has introduced a pair of  LDOs with eight selectable fixed-output voltages and diagnostic features for functional safety, and high thermal performance. Each has three pins that allow the output to be set to 0.8, 1.2, 1.5, 1.8, 2.5, 2.8, 3.3 or 5V “more accurately than with an external voltage divider using three external selection pins – the output is ...

Handy way to protect ’12V’ electronics in vehicles

ZFX-ST3012 temperature controller

I had a need to put some nominally 12V modules into a vehicle. They are specced at 12±0.5V, or similar. So putting them in a vehicle that will be charging at 14.4V and might even experience load-dump (the voltage surge that happens if the battery becomes disconnected when the engine is running) seemed too much of a gamble. A scout ...

LDOs with 100dB ripple rejection and 5μV noise are chip-scale

Toshiba-WCSP4F-ldo

Toshiba is aiming at high ripple rejection in a family of CMOS linear voltage regulators in a ~0.7 x 0.7mm WCSP4F package. Called the TCR5RG series, the low drop-out parts cover an output voltage range of 900mV to 5V. Achieved through the combination of a wide-gap internal circuit topology, an integrated high-speed operational amplifier and low-pass filtering, according to the ...

ISSCC 2020: Analogue on-chip LDO beats back digital onslaught

ISSCC2020-Seoul-NatU-LDO

While digital on-die point-of-load converters are trending, analogue designs are far from finished. Digital low-dropout (DLDO) regulators appeared a few years ago and looked to be the future for on-die point-of-load regulators on digital chips. Scroll down for ISSCC 2020 DLDOs. However, a team at Seoul National University has turned the tables with a novel agile analogue LDO that offers ...

PCB balances supercapacitors

Advanced-Linear-Devices-sabmbovp2

Advanced Linear Devices is aiming at series-connected supercapacitors with precision dual-channel automatic voltage balancers and over-voltage protectors. Called the SABMBOVP2xx family of products, they are small PCBs based around the firm’s ALD9100xx ICs, with added current-boosting output fets. ALD9100xx ICs (circuit below) include two voltage-dependant current sinks that conduct heavily above a certain voltage – acting as voltage clamps. Rather than ...

PCIM: 175°C linear reg and logic gates for automotive

Cissiod-CXT-STA4919-app

Cissoid has announced an adjustable linear regulator and logic gates that operate with junction temperature from -55°C up to 175°C – exceeding AEC-Q100 Grade 0 standard, the Belgian high-rel chip maker pointed out. Members of the firm’s new CXT series of automotive grade components, all with the same temperature range, the first is CXT-STA4919, a 50mA adjustable linear voltage regulator that can create ...