ICs & Semiconductors

STSPIN250 brushed DC motor driver meets portable, battery-powered IoT devices

Tue, Mar 21, 2017

STSPIN250 brushed DC motor driver meets portable, battery-powered IoT devices: STMicroelectronics has announced the STSPIN250 single-chip 2.6A driver for brushed DC motors. The STSPIN250 extends STMicroelectronics’ family of miniature, low-voltage, energy-efficient drivers for battery-powered portable and wearable applications.

 The STSPIN250 driver integrates a full power-MOSFET bridge and fixed off-time PWM current controller in a tiny 3.0 x 3.0mm package that saves space in portable equipment. The low on-resistance of the power stage (200mOhm total, high-side + low-side) and what STMicroelectronics claims is the best-in-the market current-sipping standby mode — below 80nA – to help maximise battery runtime and keep equipment-case temperatures down. Its supply-voltage range of 10 to 1.8V allows designers to specify a power source as small as a single Li-Ion cell.

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Maxim’s nanoPower boost regulator claims industry’s longest battery life

Tue, Mar 14, 2017

Maxim’s nanoPower boost regulator claims industry’s longest battery life: Claiming the industry’s longest battery life and the smallest form factor for use in wearable and consumer IoT designs, the MAX17222, from Maxim features 300nA IQ and 95 per cent peak efficiency. It reduces solution size by up to 50 per cent, adds the company.

The MAX17222 nanoPower boost regulator from Maxim Integrated Products, has quiescent current (IQ) of only 300nA.  The 0.4 to 5.5V input, 1.8 to 5.0V output boost regulator has 500mA input current limit, and reduces solution size by up to 50 per cent compared to similar products, claims the company, and offers 95 per cent peak efficiency to minimise heat dissipation. The resulting benefits make the nanoPower boost regulator suitable for wearable devices.

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Low current LDO from Diodes occupies less space and offers one per cent accuracy

Fri, Mar 10, 2017

Low current LDO from Diodes occupies less space and offers one per cent accuracy: Available with output voltages from 1.2 to 3.3V, the AP7350 low dropout voltage regulator (LDO) supports load currents up to 150mA. Diodes has introduced the AP7350 which targets low-power handheld and wearable devices.

The low quiescent current of just 0.25microA and one per cent accuracy enables designs to achieve extended battery life, says Diodes, while a chip‑scale package (CSP) that measures just 0.64mm² reduces board space requirements.

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Silego introduces GFET3 power switches in WLCSP

Wed, Mar 08, 2017

Silego introduces GFET3 power switches in WLCSP: Combining its FET IP and system level protection features, the GFET3 Integrated Power Switch (IPS) offer low RDS ON.

The GFET3 IPS addresses space-constrained PCB applications, typical in fitness bands, smartphones and tablet PCs. The three new switchescover high-side power control applications from 1.0 to 4.0A.

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