The new A8494 from Allegro MicroSystems Europe is a fixed off-time, current-mode-controlled, buck switching regulator IC that combines a 3 A current rating with a wide input voltage range of 8 V to 50 V in a small surface-mount package.
The wide input voltage range makes the new device suitable for a wide range of industrial and consumer applications, including uninterruptible power supplies, 12 V lighter-powered applications such as portable DVD players, automotive 12 V or 24 V input applications with higher voltage protection, point-of-sale equipment, and industrial systems based on 24 V or 36 V buses.
The regulator requires no external clamping diode, inductor and filter capacitor, and the 'off' time is determined by an external resistor. It will operate in both continuous and discontinuous modes. An integrated DMOS switch means that no external FET is needed.
An internal blanking circuit is used to filter out transients caused by the reverse recovery of the external clamp diode. Typical blanking time is 200 ns, and the output voltage is adjustable from 0,8 V to 24 V using a resistor divider and the 0,8 V (±3%) reference.
The device exhibits a minimal change in efficiency across its full operating range, and has a low shutdown current to minimise power drain and extend battery life. The A8498 comes in a low-profile eSOIC-8L surface-mount package with exposed pad.
For more information contact Larry Gordon, Arrow Altech Distribution, +27 (0) 11 923 9600, lgordon@arrow.altech.co.za
Altron celebrates 60th birthday with a call to rebuild Johannesburg Altron Arrow
News
Altron is celebrating its 60th birthday by honouring Johannesburg’s heritage and encouraging business, government and civil society to come together and respond to our President’s call to rebuild Johannesburg.
Read more...Reference board for cardio monitoring Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STDES-ESP01 reference board from STMicroelectronics demonstrates the capability of the ST1VAFE6AX and ST1VAFE3BX biosensors to detect ECG and SCG signals.
Read more...USB Type-C-powered controllers Future Electronics
Power Electronics / Power Management
Diodes Incorporated has released two USB Type-C PD 3.1 extended power range sink controllers that can be embedded into battery-powered devices.
Read more...ST MCUs extend ultra-low power innovation Altron Arrow
DSP, Micros & Memory
STMicroelectronics has introduced new STM32U3 microcontrollers with cutting-edge power-saving innovations that ease deployment of smart connected tech, especially in remote locations.
Read more...Multicell battery monitoring Altron Arrow
Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.
Read more...Innovative satellite navigation receiver Altron Arrow
Telecoms, Datacoms, Wireless, IoT
STMicroelectronics has released an innovative satellite navigation receiver to democratise precise positioning for automotive and industrial applications.
Read more...LED driver for industrial power supply indication Altron Arrow
Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.
Read more...Full telemetry in tiny DC-DC converters RS South Africa
Power Electronics / Power Management
The FS160* series of µPOL DC-DC converters from TDK all offer full telemetry, provide increased performance, and are remarkable for extraordinary power density in the smallest sizes.
Read more...Power IC supplies 1650 W EBV Electrolink
Power Electronics / Power Management
Power Integrations has announced a two-fold increase in power output from the HiperLCS-2 chipset with the new device now being able to deliver up to 1650 W of continuous output power.
printer friendly version