XR77128 Overview
The XR77128 is a quad channel digital Pulse Width Modulated (PWM) step down (buck) controller. A wide 4.75V to 5.5V and 5.5V to 25V input voltage range allows for single supply operation from standard power rails. With integrated FET gate drivers, two LDOs for standby power and a 105kHz to 1.23MHz independent channel to channel programmable constant operating frequency, the XR77128 reduces overall ponent count,...
XR77128 Key Features
- Quad Channel Step-down Controller
- 4.75V to 5.5V and 5.5V to 25V Input Voltage
- 0.6V to 5.5V Output Voltage (higher with external feedback resistors)
- SMBus pliant I2C Interface
- Full Power Monitoring and Reporting
- 3 x 15V Capable PSIO + 2 x GPIOs
- Full Start/Stop Sequencing Support
- Built-in Thermal, Over-Current, UVLO and Output Over-Voltage Protections
- On Board 5V and LDOOUT Standby LDOs
- On Board Non-Volatile Memory
