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Renesas RAA2124214GNP#MA0
- Part No.:
- RAA2124214GNP#MA0
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 22-WFDFN Exposed Pad
- Datasheet:
-
RAA2124214GNP#MA0.pdf
- Description:
- RAA212421 LOW DROP OUT LINEAR
- Quantity:
- Payment:
- Shipping:
Inventory:194
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Product details
Overview
RAA2124214GNP#MA0 from Renesas Electronics is a dual-output power management IC integrating a 3V–40V input, 1.1A synchronous buck regulator and a 500mA fast-transient LDO in a single 3×6mm DFN-22 package. It delivers ±1.8% output voltage accuracy across –40°C to +125°C, supports PFM/PWM light-load operation, and features programmable soft-start, hiccup-mode OCP, thermal shutdown, and power-good signaling - deployed in industrial control and cloud infrastructure power rails.
For engineers reviewing the RAA2124214GNP#MA0 datasheet, RAA2124214GNP#MA0 pinout, RAA2124214GNP#MA0 application, or RAA2124214GNP#MA0 equivalent, key selection criteria include its dual-regulator architecture, 500kHz default switching frequency (adjustable 300kHz–2MHz), integrated high-side/low-side nMOSFETs, LDO dropout of 45mV at 2.5V/500mA, and industrial-grade temperature rating.
Technical Context
The RAA2124214GNP#MA0 implements a current-mode PWM/PFM hybrid control scheme with zero-current detection and internal 500mV reference for the buck stage, while the LDO employs state-of-the-art internal compensation enabling sub-10µs load transient response. Both regulators share independent enable and soft-start controls, with separate feedback loops (FB1 for buck, FB2 for LDO) and dedicated ground pins (GND1, GND2) to minimize coupling.
Its buck stage integrates 313mΩ high-side and 175mΩ low-side nMOSFETs, supports external frequency programming via FS1 resistor, and offers internal/external loop compensation options. The LDO accepts 1.8V–6V input, delivers up to 5.5V output, and achieves 57dB PSRR at 1kHz - all within a thermally enhanced 22-lead TDFN package with exposed paddle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (Buck) | 3V to 40V - supports wide industrial input rails including 12V, 24V, and 36V systems without pre-regulation. |
| Max Output Current (Buck) | 1.1A continuous - sufficient for powering microcontrollers, FPGAs, and interface ICs in compact embedded designs. |
| Switching Frequency | Default 500kHz; adjustable 300kHz–2MHz via FS1 resistor - enables optimization of efficiency vs. size trade-offs. |
| LDO Output Current | 500mA - powers noise-sensitive analog circuits, sensors, or RF sections with fast transient response. |
| Output Accuracy | ±1.8% over line/load/temp (–40°C to +125°C) - ensures stable logic-level compliance for downstream digital loads. |
| Dropout Voltage | 45mV at VOUT = 2.5V/500mA - minimizes power loss and heat generation in low-VIN applications. |
| Package | 22-lead 3mm × 6mm TDFN (RoHS-compliant) - provides high thermal performance (θJC = 3.3°C/W) and space-efficient layout. |
Pinout & Package
The RAA2124214GNP#MA0 is housed in a 22-lead, 3mm × 6mm thin DFN (TDFN) package with exposed thermal pad (EPAD). The package meets RoHS requirements and supports Pb-free reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2 | Independent enable inputs | Enable/disable buck and LDO stages separately; TTL/CMOS-compatible thresholds allow direct MCU GPIO control. |
| SS1, SS2 | Soft-start timing inputs | Capacitor-to-ground sets ramp time; SS1 supports internal 2ms soft-start when tied to VCC1. |
| FB1, FB2 | Feedback inputs | Resistor-divider nodes for buck (0.6V ref) and LDO (0.5V ref); enable precise output voltage programming. |
| VIN1, VIN2 | Power inputs | VIN1 supplies buck stage (3–40V); VIN2 supplies LDO (1.8–6V); separate inputs prevent cross-regulation. |
| LX1, BOOT1 | Switch node & bootstrap | LX1 connects to external inductor; BOOT1 requires 100nF capacitor to LX1 for high-side gate drive. |
| PG1 | Open-drain power-good | Signals regulation status; internal 5MΩ pull-up eliminates need for external resistor in most cases. |
| GND1, GND2, EPAD | Ground terminals | Dedicated grounds isolate buck/LDO return paths; EPAD must be connected to PCB ground plane with ≥5 vias. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side/low-side nMOSFETs | Eliminates external MOSFETs and gate drivers - reduces BOM count and layout complexity. |
| Selectable PFM/PWM light-load mode | Enables >90% efficiency at light loads (PFM) or fixed-frequency EMI control (PWM) - configurable via SYNC1 pin. |
| Internal/external loop compensation | Reduces external components: internal compensation requires no external RC network; external option allows fine-tuning stability. |
| Programmable soft-start time | Prevents inrush current damage by controlling output ramp rate - critical for systems with large output capacitance. |
| Hiccup-mode overcurrent protection | Shuts down on sustained overload and auto-restarts after cooldown - protects against short-circuit faults without latch-up. |
Applications
| Industrial Control Systems | Medical Instrumentation |
|---|---|
Use Scenario: Powering PLC I/O modules, motor drivers, and sensor signal chains in factory automation cabinets. IC Role / Device Role / Timing Role: Dual-regulator PMIC delivering isolated 5V/3.3V for digital logic and ultra-low-noise 1.8V/2.5V for ADCs and op-amps. Use Value: ±1.8% accuracy and 57dB PSRR ensure stable reference voltages for 16-bit+ data acquisition under varying line conditions. | Use Scenario: Supplying patient monitoring devices requiring low EMI, high reliability, and extended operating temperature range. IC Role / Device Role / Timing Role: Primary power source for microcontroller, display, and analog front-end - with independent enable for power sequencing. Use Value: Fast LDO transient response (<10µs) maintains clean supply during sudden current steps from pulse oximetry or ECG sampling. |
| Distributed Power Supplies | Cloud Infrastructure |
Use Scenario: Local point-of-load regulation on server backplanes or telecom line cards where centralized 12V/48V rails are distributed. IC Role / Device Role / Timing Role: Buck-LDO combo providing efficient primary conversion and low-noise secondary rail for memory or PHY ICs. Use Value: 300kHz–2MHz frequency adjustability allows EMI filtering alignment with system clock domains and avoids sensitive bands. | Use Scenario: Powering FPGA configuration, management controllers, and PCIe retimers in rack-scale servers and edge AI accelerators. IC Role / Device Role / Timing Role: Compact dual-rail solution replacing discrete buck + LDO combinations - reducing board area by >40%. Use Value: 3×6mm footprint and thermal pad enable high-power density in constrained 1U chassis with airflow-limited cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65217CIRSLR | Single 3.3V/1.8V buck + LDO; 2.7–5.5V input; max 1A buck; no PFM mode; QFN-32 package. | Targeted at portable battery-powered systems - lacks 40V input capability and industrial temp rating. | Choose for low-input-voltage, space-constrained portable designs where wide VIN and extended temperature are not required. |
| MAX20004AATP/V+T | Single 3.3V/5V buck + LDO; 3.5–36V input; 1.2A buck; integrated watchdog; TQFN-20 package. | Includes system monitoring features (watchdog, reset) but no programmable frequency or independent LDO enable. | Choose when system-level fault management (reset timeout, window watchdog) is prioritized over flexible soft-start or LDO sequencing. |
Compared with TPS65217CIRSLR and MAX20004AATP/V+T, the RAA2124214GNP#MA0 uniquely combines 40V input tolerance, independent buck/LDO enables, 300kHz–2MHz frequency tuning, and ±1.8% accuracy over full industrial temperature - making it optimal for ruggedized, high-reliability power delivery where design flexibility and precision matter.
Availability
RAA2124214GNP#MA0 is available at Aetrix Electronics and suitable for industrial control, medical instrumentation, and cloud infrastructure applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for RAA2124214GNP#MA0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power management, and connectivity solutions for automotive, industrial, and enterprise markets.
The RAA212421 series is designed for high-efficiency, space-constrained industrial and infrastructure power systems - integrating robust protection, precision regulation, and flexible configuration into compact packages.
FAQ
What is the maximum input voltage supported by the RAA2124214GNP#MA0 buck regulator?
The RAA2124214GNP#MA0 buck regulator supports a maximum input voltage of 40V, with absolute maximum rating of +43V on VIN1. This enables direct connection to unregulated 24V and 36V industrial bus rails without external pre-regulation. Operation above 40V violates recommended conditions and risks permanent damage.
Does the RAA2124214GNP#MA0 support independent enable control for its buck and LDO outputs?
Yes, the RAA2124214GNP#MA0 provides fully independent enable control: EN1 manages the buck regulator, and EN2 controls the LDO. Each has TTL/CMOS-compatible thresholds (EN1 rising threshold: 1.2V; EN2 rising threshold: 0.5–1.0V), allowing separate power sequencing and dynamic power gating in complex systems.
What is the typical dropout voltage of the RAA2124214GNP#MA0 LDO at full load?
The RAA2124214GNP#MA0 LDO exhibits a typical dropout voltage of 45mV at VOUT = 2.5V and ILOAD = 500mA, with a maximum of 90mV across temperature and process variation. This low dropout enables high efficiency in low-VIN applications such as post-regulation from a 3.3V buck stage.
Can the switching frequency of the RAA2124214GNP#MA0 buck regulator be adjusted, and if so, how?
Yes, the RAA2124214GNP#MA0 buck regulator's switching frequency is adjustable from 300kHz to 2MHz using an external resistor connected between FS1 and GND1. A 340kΩ resistor yields ~300kHz; 32.4kΩ yields ~2MHz. Tying FS1 to VCC1 selects the default 500kHz frequency - simplifying design when EMI constraints permit.
What thermal performance can be expected from the RAA2124214GNP#MA0 in a standard PCB layout?
In a standard 4-layer PCB with adequate copper pour and thermal vias to the ground plane, the RAA2124214GNP#MA0 achieves θJC = 3.3°C/W and θJA = 32°C/W. With five or more thermal vias under the EPAD, junction-to-ambient rise remains below 40°C at full 1.1A buck load and 500mA LDO load - supporting reliable operation at +125°C ambient.
RAA2124214GNP#MA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 22-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 300kHz ~ 2MHz
- Voltage/Current - Output 1:
- 0.5V ~ 5.5V, 1.1A
- Voltage/Current - Output 2:
- 0.8V ~ 5.5V, 500mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 1.8V ~ 6V, 3V ~ 40V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 22-TDFN (3x6)
RAA2124214GNP#MA0 FAQ
1.How can I place an order for RAA2124214GNP#MA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2124214GNP#MA0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RAA2124214GNP#MA0 reliable?
The price and inventory of RAA2124214GNP#MA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2124214GNP#MA0 is usually 5 days.
3.What payment methods are accepted for RAA2124214GNP#MA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2124214GNP#MA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2124214GNP#MA0?
RAA2124214GNP#MA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2124214GNP#MA0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RAA2124214GNP#MA0?
For technical support, including RAA2124214GNP#MA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2124214GNP#MA0 requirements.
6.How does Aetrix verify that RAA2124214GNP#MA0 is sourced from the original manufacturer or authorized distributors?
All RAA2124214GNP#MA0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RAA2124214GNP#MA0 meets industry standards.
7.What is the process for return or replacement of RAA2124214GNP#MA0?
All RAA2124214GNP#MA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2124214GNP#MA0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RAA2124214GNP#MA0 part is unused and in its original packaging.
Return procedure for RAA2124214GNP#MA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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