The ADP5051 combines four high performance buck regulators and a supervisory circuit with a voltage monitor, watchdog, and manual reset.
Channel 1 and Channel 2 integrate high-side power MOSFET and low-side MOSFET drivers.
The supervisory circuits monitor voltage level. The watchdog timer generates a reset when the WDI does not toggle within a preset timeout period. Select manual reset functionality via the processor reset mode or system power on/off switch mode.
The optional I²C interface offers flexible configurations, including adjustable and fixed output voltage, junction temperature overheat warning, low input voltage detection, and dynamic voltage scaling.

Wide input voltage range: 4.5V to 15V
Full featured evaluation board for the ADP5051
CH1 and CH2: programmable 1.2A/2.5A/4A buck regulator
CH3 and CH4: 1.2A sync buck regulator
Stand-alone operation capability
USB dongle and GUI software support
Dedicated enable option for each channel
Mode option to select PSM or FPWM operation
Programmable switching frequency from 250kHz to 1.4MHz
Frequency synchronization input or output
Simple device measurements and demonstrable with Voltage supply, Voltmeter, Ammeter, Load resistors or electrical load
Open-drain processor reset with external adjustable threshold monitoring
Manual reset input

Switching Voltage Regulators, Analog Devices

A wide range of switching regulators from Analog Devices offers operation in step-up (boost), step-down (buck), and inverting voltage modes. The regulators generate fixed or adjustable output voltage.