Dallas, Tex. Diodes Inc. has added the AP1533 to its family of DC/DC converters. The AP1533 is a 300 KHz, 1.8 A asynchronous PWM buck converter with soft-start function, low ripple noise output, and low current consumption, which make it suitable for a wide range of computing and consumer electronic applications such as LCD monitors, LCD TVs, DVD/PVR players, set-top boxes, xDSL modems, and networking and telecommunications equipment.
The AP1533 buck converter offers a wide input voltage range of 4 V to 23 V, and an adjustable output voltage from 0.8 V to 23 V. The high-efficiency DC/DC buck converter's duty-cycle varies between 0% and 99%, depending on the output voltage. It can provide a low noise output current up to 1.8 A over a broad range of input voltages.
In addition, the voltage lockout circuit of the AP1533 ensures that the built-in high-side MOSFET driver remains in the off state whenever the supply voltage drops below the 3.3-V threshold resuming once the supply voltage rises above 3.5 V. Other features include thermal shutdown, short circuit protection, and current limiting. The operating temperature range is -25°C to 85°C.
Offered in a small, thermally enhanced SOP-8L package, the AP1533 is pin-compatible with the company's existing AP1513 DC/DC converter.
Diodes Inc., 1-805-446-4800, www.diodes.com