Austriamicrosystems introduces new high voltage DC-DC boost converter

Austriamicrosystems has introduced the AS1344 high-voltage DC-DC boost converter, which is optimized for single-cell powered photodiode bias, LCD or organic light-emitting diode (PM OLED) displays. At 15V output voltage, the AS1344 can provide 120mA and 28mA drive current with a 3V or 1.5V input voltage. The AS1344 operates from a single 0.9 - 3.6V supply and provides an adjustable output voltage from 5.5V to 42V. The 1MHz fixed switching frequency allows for small, low-cost inductors and capacitors, which significantly reduces PCB size. This ?a switching operation also makes it easy to filter predictable low output noise.

Figure: Austriamicrosystems introduces new high voltage DC-DC boost converter

The AS1344 also offers an automatic power-saving mode of operation that increases efficiency at light loads. In addition, the micropower design reduces the supply operating current to 22Î¼A. Significant reductions in power consumption greatly extend battery life in applications.

In addition, the AS1344 offers a 1uA shutdown mode and output disconnect function that reduces PCB size and BOM cost for applications such as PMO LEDs or electronic ink displays, all of which require output disconnect to optimize operating characteristics and reduce power. Consumption. To keep the application running when the battery is exhausted, the AS1344 provides a user-adjustable soft-start feature to limit the input current during startup.

The AS1344 provides 2% output voltage accuracy and power-good signal, which is used to indicate that the output voltage is less than 10% deviation from the regulation value. The component is suitable for powering a variety of different PMOLED, electronic ink or LCD displays in handheld devices, as well as other applications requiring high voltages such as microphones, photodiodes or LED strings.

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Henan Shuyi Electronics Co., Ltd. , https://www.shuyiaiopc.com