Overview
Description
The RAA211230 is an integrated 24V, 3A synchronous buck regulator with current mode constant on-time (COT) control. The RAA211230 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
- 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-lead TSOT23 package
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 3.97 MB | |
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Design & Development
Software & Tools
Software & Tools
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| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
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Simulator | Renesas |
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Boards & Kits
Evaluation
RTKA211230DE0020BU
Active
RAA211230 Synchronous Buck Evaluation Board with 4.5V to 24V Input Range, 3.3V 3A Output (TSOT23-6 version)
The RTKA211230DE0020BU board evaluates the RAA211230, a DC/DC synchronous step-down regulator with current mode Constant On Time (COT) control. The RAA211230 supports a wide input voltage range (from 4.5V to 24V) and adjustable output voltage. It delivers up to continuous 3A output current.
Recommended Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Product Options
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Videos & Training
Compact Buck Regulators with COT Control
Renesas’ RAA211230/320 family of synchronous buck regulators are integrated with current mode constant on-time (COT) control which enables fast transient response while shrinking the output filter size. Visit renesas.com/cot-regulators to learn more about how these high performance, compact and pin-compatible COT regulators will make designing your power supply easy!
Video List
