RAA2116514GNP#HA0

RAA211651 is an integrated 60V, 5A synchronous buck regulator with the constant-on-time (COT) control scheme. It supports a wide range of input voltage from 4.5V to 60V. The modulation scheme used allows for high efficiency at all output load levels, especially at light-load conditions. The RAA211651 is based on the COT modulator where the on-time is determined by the input voltage level and the resistor connected to the SET pin. It can also be programed by an external capacitor. The RAA211651 also provides programmable start-up delay time for sequencing purposes The RAA211651 provides comprehensive protections including undervoltage lockout, overcurrent (positive and negative), overvoltage and overtemperature protections. The device is available in 28 Ld 4mmx5mm QFN package. Applications include industrial power supplies, 48V industrial and computing PoL, battery powered applications, ATM, vending, gaming machines, robotics, programmable logic controllers, after-market automotive.

• 60V, 5A low quiescent current, integrated switching regulator
• 0.8V reference voltage with 1% accuracy
• Very low quiescent current, typically 19µA at 24V input
• Modulator: constant on-time (COT)
• Excellent line and load regulation, selectable internal or external control loop compensation
• Variable load dependent switching frequency, output power-good (PG) indicator
• Integrated LDO with bypass capability allowing for high-efficiency operation
• High-side overcurrent (HSOC) and low-side current protections in both directions
• Optional 3.3V default VOUT using internal feedback
• Programmable and optional fixed 2ms soft-start feature