Toshiba has released the promised expansion of its TCTH0xxxE multi-point over-temperature alarm IC family. Each of these simple ICs, (branded ‘Thermoflagger’) works with one or more PTC (positive temperature coefficient) thermistors to detect over temperature across a PCB, for example, perhaps sensing the individual temperatures of multiple power mosfets . “With safety paramount in many applications, the over-temperature detection ICs ...
Navitas recently announced its fourth generation of GaN power transistors with monolithically-integrated gate drivers. Branded GaNsafe, the company has increased the protection integrated alongside the driver and has moved to 10 x 10mm TOLL packaging, with a custom internal leadframe (diagram below). The initial products are rated at 650V (800V transients), cover Rds(on) from 35 to 98mΩ (table below), and ...
Diodes has released a 3A low-dropout low-noise voltage regulator. Called AP7179D, it has ±1% output accuracy (Vin = Vout + 300mV) across line, load and temperature, according to the company, and it drops 180mV (maximum) with 3A of load. Its low-noise reference and error amplifier contribute to 4.4µVrms typical operation at 800mV output (7μVrms at 5V), and PSSR (power supply ...
E-peas has created a power IC that can mediate between two energy harvesters, a 5V charger, a power store and a load. AEM13920 can work from any combination of two sources including: photo-voltaic cells, thermo-electric generators, RF energy harvesters or kinetic pulsed sources. “For instance, a remote control could have separate PV cells on its front and rear, to maintain ...
Rohm has developed Hall-based magnetic detectors for vehicle use. BD5310xG-CZ types are momentary (dubbed ‘unipolar’): turning on above a fixed south pole magnetic flux density and turning off below the same threshold (with a small amount of hysteresis) BD5410xG-CZ types are latching: turning on above a fixed south pole flux density, then remaining on until an equal north pole flux ...
Diodes has announced a single-channel version of its automotive-qualified AS2333Q dual precision micro-power op-amp. AS333Q has an 8μV input offset (22μV max 25°C), consumes 17μA, and has “near zero-drift over time and temperature for high-accuracy signal conditioning in automotive electronic control units”, according to the company. It has rail-to-rail inputs and output, with the common-mode range extending 100mV beyond the ...
Texas Instruments has picked the Hall effect for its latest isolated current sensor, and claims 50ppm/°C drift over temperature and ±0.5% drift over lifetime. Aimed at electric vehicle chargers and with versions available up to 75Arms, isolation in the TMCS1123 is rated at 1.1kVdc, and to withstand 5kVrms. “Assessment of device lifetime working voltages follow VDE 0884-11 for reinforced insulation, ...
Texas Instruments is previewing a 50V quad-channel single-pole analogue switch with a wide voltage range, low on-resistance and consistent on-resistance with signal amplitude. Called TMUX7612 and made on a CMOS process, it will run on single rails between 4.5 and 50V, dual rails from ±4.5 to ±25V, and asymmetric rails – the company gave 37.5Vdd and -12.5Vss as an example, ...
Nexperia has introduced its first 5V load switch IC, which operates across 2.5 – 5.5V with 110mA to 2.5A current limiting. The 2 x 2mm NPS4053, as it will be know, is optimised use in portable devices such as notebook computers, desktops and docking stations, and automotive infotainment systems – it is UL 62368 recognised and there is an AEC-Q100 ...
Diodes has created a high-speed double-pole double-throw analogue switch that can be used as a multiplexer or de-multiplexer at over 5GHz. To be known as PSMUX136, it supports a supply of 1.8 to 5.5V, and from 0 to 3.6V on the analogue ports. Control pins are compatible with 1.8V logic. The device has two single-pole double throw switches, A and ...
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