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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-24 V |
| Output 1 | 3.3 V / 3 A |
| IC revision | 1.00 |
Description
The RAA211233 is an integrated 24V, 3A, 1.4MHz synchronous buck regulator with current mode constant on-time (COT) control. The RAA211233 features comprehensive protection including input undervoltage lockout (UVLO), overcurrent protection (OCP), output undervoltage protection (OUVP), and over temperature protection (OTP).
Features
- 4.5V to 24V input supply range
- Up to 3A output current
- Integrated high-side (85mΩ) and low-side (45mΩ) MOSFETs
- 1.4MHz switching frequency
- 400μA quiescent current
- Minimum on-time of 66ns
- Minimum off time of 250ns
- 0.6V reference voltage with 2% accuracy
- PFM mode under light-load condition
- Current mode Constant On-Time (COT) control with internal compensation
- Internal 1.2ms 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
Typical applications
- Embedded systems and I/O supplies
- Industrial power supplies