The AP65355 and AP65455 synchronous buck converters from Diodes Incorporated provide low- voltage regulation with high efficiency, excellent transient response and high DC output accuracy at continuous output currents of 3A and 4A.
The converters implement an adaptive on-time control scheme which supports a seamless transition between continuous- conduction mode under high load conditions and discontinuous-conduction mode for lighter loads ensuring maximum efficiency at all times.
The devices are suitable for a wide range of point- of-load applications as they work with input voltages ranging from 4.5V to 18V and supply output voltages from -0.76V to 6V. A low quiescent supply current and integrated high- and low-side switches with low on-resistance help to reduce power losses.
Under-voltage lockout over-current and over-temperature protection functions help to prevent damage to downstream components and premature component failure. The device’s Enable pin also has a high voltage tolerance up to the input voltage.
- Good stability independent of the output capacitor’s equivalent series resistance
- 650kHz switching frequency
- Pre-biased start-up
- Programmable soft-start
- Open drain Power Good output
- Games consoles
- Set-top boxes
- Home audio equipment
- Computer monitors
- Networking equipment