Renesas Electronics RAA211651 Integrated Switching Regulator

Renesas Electronics RAA211651 Integrated Switching Regulator features a Constant On-Time (COT) control scheme. The RAA211651 supports a wide range of input voltage from 4.5V to 60V and adjustable output voltage (0.8V to maximum duty cycle V_IN). The device also features a very low quiescent current, typically 19µA at 24V input. The modulation scheme used allows for high efficiency at all output load levels, especially at light-load conditions.

Features

4.5V to 60V input supply range
0.8V reference voltage with 1% accuracy
Adjustable output voltage (0.8V to Dmax*VIN)
Modulator: Constant On-Time (COT)
Low quiescent current
Excellent line and load regulation
Selectable internal or external control loop compensation
Variable load-dependent switching frequency
Output Power-Good (PG) indicator
Programmable and optional fixed 2ms soft-start feature

Programmable startup and shutdown delay
Integrated LDO with bypass capability allowing for high-efficiency operation
Full protection: High-Side Overcurrent (HSOC) and low-side current protections in both directions, output Overvoltage Protection (OVP) and OutputUndervoltage Protection (OUVP), input Undervoltage Lockout (UVLO), and Over-Temperature Protection (OTP)
Optional 3.3V default VOUT using internal feedback
28 Ld 4mmx5mm QFN package

Applications

Industrial power supplies
48V industrial and computing PoL
Battery-powered applications
ATM, vending, and gaming machines

Robotics
Programmable logic controllers
After-market automotive

Renesas Electronics RAA211651 Integrated Switching Regulator

Features

Applications

Block Diagram

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