Features
- Wide Vin operating range from 4.5V to 60V
- Adjustable Vout from 0.8V to ~90% of Vin
- Up to 3A of continuous output current
- Default 400kHz or adjustable switching frequency from 200kHz to 800kHz
- ±1% load regulation accuracy from -40°C to 125°C, ±0.5% load regulation accuracy at 25°C
- 95μA typical quiescent current
- Internal compensation, fixed 0.5ms SS for QFN and adjustable SS for HTSSOP
- PFM operation and DEM at light load with integrated external bias LDO & Power Good indicator
- Cycle-by-cycle peak and valley current limit, input voltage UVLO, output voltage undervoltage (short-circuit) protection and thermal shut down
Description
The RAA211630 is a DC/DC synchronous step-down (Buck) regulator that supports a 4.5V to 60V input voltage range and adjustable output voltage. It can deliver up to 3A of continuous output current with premium load and line regulation performance.
The RAA211630 uses peak-current mode control architecture. Its PWM switching frequency is programmable to provide the best trade-off between transient response and efficiency. It also supports PFM operation and DEM to maximize light-load efficiency, in addition to an external bias LDO input to further reduce power dissipation across the load range. The regulator also has an internal loop compensation circuit to reduce the external component count and BOM cost.
The RAA211630 provides useful functions such as internal or programmable soft-start and power good indicator. For safe operation, the RAA211630 also offers protection features such as cycle-by-cycle peak and valley current limit, input voltage UVLO, output voltage undervoltage (short-circuit) protection, and thermal shutdown.
Parameters
| Attributes | Value |
|---|---|
| Topology [Rail 1] | Buck |
| Outputs (#) | 1 |
| Input Voltage (Min) [Rail 1] (V) | 4.5 |
| Input Voltage (Max) [Rail 1] (V) | 60 - 60 |
| Output Voltage (Min) [Rail 1] (V) | 0.8 |
| Output Voltage (Max) [Rail 1] (V) | 55 |
| Output Current (Max) [Rail 1] (A) | 3 |
| Switching Frequency Range (Typical) (kHz) | 200 - 800 |
| Control Type | Peak Current Mode |
| Peak Efficiency (%) | 91 |
| IQ [Rail 1] (µA) | 90 |
| SYNCH Capability | No |
| Qualification Level | Standard |
| Temp. Range (°C) | -40 to +125°C |
| Simulation Model Available | iSim |
Application Block Diagrams
 | Pet Camera Robot Mobile pet camera robot with real-time video, audio, and wireless control. |
 | High-End Central Thermostat Central thermostat system integrates satellite thermostats for smart climate control and efficiency. |
 | 3‑Phase AC Motor Soft Start A phase-cut soft starter smoothly ramps up 3-phase AC motors and simplifies wiring with relay bypass. |
 | 240W USB Type-C Battery System This flexible battery system supports 2-7 Li-ion cells, USB-C charging, and power bank functionality. |
 | Video Conferencing Camera with AI Capabilities AI-powered 360° video conferencing system with dual cameras and beamforming audio. |
 | Mid-Range Smart Lock Designed to Support Aliro – New In-Development Standard The smart lock platform is designed to support Aliro and offers secure access and optimized power usage. |
 | e-AI-Ready GUI Controller for Appliances and Industrial Systems The e-AI-ready HMI controller offers smart control with AI, predictive maintenance, and rich connectivity. |
 | AI-Enabled Surveillance Camera AI-powered surveillance camera with DRP-AI boosts security with 4K imaging and low power. |
Additional Applications
- Distributed power supplies & general purposes POL
- Telecommunication base station power supplies
- High-voltage single-board systems or unregulated wall transformer
- Portable mobility devices
- Industrial power systems