Renesas Electronics RAA211230 Synchronous Buck Regulator

Renesas Electronics RAA211230 Synchronous Buck Regulator is an integrated 24V, 3A switching regulator with current mode Constant On-Time (COT) control. This regulator features 400µA quiescent current, 0.765V reference voltage with 2% accuracy, and 0.8ms internal soft-start time. The RAA211230 switching regulator houses integrated high-side (85mΩ) and low-side (45mΩ) MOSFETs. This buck regulator offers comprehensive protections, including input Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), Output Undervoltage Protection (OUVP), and Over-Temperature Protection (OTP). Typical applications include industrial power supplies, general purpose, embedded systems, and I/O supplies.

Features

4.5V to 24V input supply range
Up to 3A output current
Integrated high-side (85mΩ) and low-side (45mΩ) MOSFETs
400μA quiescent current
Minimum on-time of 60ns and minimum off-time of 275ns
0.765V reference voltage with 2% accuracy
PFM mode under light load condition
Current mode Constant On-Time (COT) control with internal compensation

Internal 0.8ms soft start time
Protection:
- Low-Side Overcurrent (LSOC) limit
- Input Undervoltage Lockout (UVLO)
- Over-Temperature Protection (OTP)
- Output Undervoltage Protection (OUVP) with Hiccup mode
Accurate EN threshold
6 LD TSOT23 package

Applications

General purpose
Industrial power supplies

Embedded systems
I/O supplies

Renesas Electronics RAA211230 Synchronous Buck Regulator

Features

Applications

Functional Block Diagram

Typical Application Circuit Diagram

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