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Renesas RAA2124214GNP#AA0
- Part No.:
- RAA2124214GNP#AA0
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 22-WFDFN Exposed Pad
- Datasheet:
-
RAA2124214GNP#AA0.pdf
- Description:
- LOW DROP OUT LINEAR SYNCH BUCK
- Quantity:
- Payment:
- Shipping:
Inventory:2,436
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Product details
Overview
RAA2124214GNP#AA0 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 package. It delivers ±1.8% output voltage accuracy across –40°C to +125°C, supports PFM/PWM light-load operation, and features programmable 300kHz–2MHz switching frequency, hiccup-mode OCP, thermal shutdown, and power-good signaling. It targets industrial control and distributed power systems requiring compact, high-efficiency dual-rail regulation.
For engineers reviewing the RAA2124214GNP#AA0 datasheet, RAA2124214GNP#AA0 pinout, RAA2124214GNP#AA0 application, or RAA2124214GNP#AA0 equivalent, key selection criteria include its integrated buck+LDO architecture, 22-pin TDFN package with exposed thermal pad, 45mV dropout at 500mA (VOUT2 = 2.5V), internal/external compensation flexibility, and guaranteed ±1.8% VOUT accuracy over full temperature and load range.
Technical Context
The RAA2124214GNP#AA0 implements a current-mode PWM/PFM hybrid control architecture for the buck stage, with integrated high-side (313mΩ) and low-side (175mΩ) nMOSFETs, 500kHz default switching frequency (adjustable via FS1 resistor), and selectable internal or external loop compensation. Its LDO employs state-of-the-art internal compensation enabling <10µs load transient recovery and >57dB PSRR at 1kHz.
Buck regulation uses a 0.6V reference with FB1 feedback, while the LDO uses a 500mV reference with FB2. Both regulators feature independent enable (EN1/EN2), soft-start (SS1/SS2), and power-good (PG1) or LDO-specific status monitoring - enabling coordinated sequencing and fault reporting in multi-rail systems.
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 communication interfaces in embedded systems. |
| Max Output Current (LDO) | 500mA - enables clean local regulation for noise-sensitive analog or RF circuitry downstream of the buck stage. |
| Output Accuracy | ±1.8% over line, load, and –40°C to +125°C - ensures stable system operation without calibration across harsh environments. |
| Dropout Voltage (LDO) | 45mV at VOUT2 = 2.5V, IOUT = 500mA - minimizes power loss and heat generation in low-VIN scenarios. |
| Switching Frequency | 300kHz to 2MHz (programmable) - allows optimization of efficiency vs. size trade-offs using smaller inductors at higher frequencies. |
| PSRR (LDO) | ≥57dB at 1kHz - suppresses ripple from upstream buck stage or noisy supply rails, critical for ADCs and sensors. |
Pinout & Package
The RAA2124214GNP#AA0 is housed in a RoHS-compliant 22-lead 3mm × 6mm TDFN package (Pb-free, L22.3x6 drawing) with an exposed thermal pad (EPAD) for enhanced thermal dissipation. The package supports reflow soldering per JEDEC J-STD-020 and has θJA = 32°C/W and θJC = 3.3°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2 | Independent enable inputs | Allow separate startup control of buck and LDO; EN1 must not be tied to VCC1 to avoid unintended LDO disable. |
| FB1, FB2 | Feedback inputs | Set output voltages via resistor dividers; FB1 references 0.6V, FB2 references 500mV - both support precise closed-loop regulation. |
| SS1, SS2 | Soft-start timing pins | Capacitor-to-ground sets ramp time; SS1 supports internal 2ms soft-start when tied to VCC1, reducing inrush stress. |
| PG1 | Open-drain power-good | Signals buck output regulation status; internal 5MΩ pull-up eliminates need for external resistor in most designs. |
| FS1 | Frequency select | Tie to VCC1 for 500kHz; connect resistor to GND1 to set 300kHz–2MHz - enables EMI tuning and inductor size reduction. |
| SYNC1 | Synchronization input | Accepts external clock (300kHz–2MHz) for phase alignment across multiple converters; logic level selects PFM/PWM mode. |
| LX1 | Switch node | Connects to external inductor; requires 100nF bootstrap capacitor between BOOT1 and LX1 for high-side gate drive. |
| EPAD | Thermal ground | Must be connected to PCB ground plane with ≥5 vias - critical for thermal performance and electrical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated buck + LDO | Reduces BOM count and board area by consolidating two independent regulators into one 3×6mm footprint. |
| PFM/PWM light-load mode | Improves light-load efficiency by >15% versus forced-PWM-only operation, extending battery life in portable instrumentation. |
| Internal/external compensation | Eliminates need for external compensation components in basic designs; external RC network enables fine-tuned loop response. |
| Hiccup-mode overcurrent protection | Prevents thermal runaway during sustained overload by cycling on/off - protects MOSFETs and PCB traces without latch-off. |
| Fast LDO transient response | Recovers from 100mA–500mA load steps in <10µs with <20mV droop - maintains stability for real-time processors and ADCs. |
Applications
| Industrial Control Systems | Medical Monitoring Devices |
|---|---|
Use Scenario: Powering PLC I/O modules with 24V field bus input and dual-rail requirements (5V logic, 3.3V MCU core). IC Role / Device Role / Timing Role: Primary DC-DC converter delivering regulated 5V/3.3V rails from unregulated 24V supply; provides coordinated sequencing via EN1/EN2. Use Value: ±1.8% accuracy ensures reliable digital logic margins; hiccup OCP prevents damage during sensor short-circuits in factory environments. | Use Scenario: Supplying analog front-end (AFE) and low-noise ADC in portable ECG monitors powered by Li-ion batteries. IC Role / Device Role / Timing Role: Buck powers digital subsystem; LDO supplies ultra-clean 1.8V rail to ADC reference and signal chain. Use Value: 45mV dropout extends battery runtime; >57dB PSRR at 1kHz rejects switching noise from buck stage, preserving SNR. |
| Distributed Power Architectures | Cloud Infrastructure Modules |
Use Scenario: Local point-of-load regulation on server backplanes where 12V or 48V intermediate bus feeds multiple boards. IC Role / Device Role / Timing Role: Secondary regulator generating 3.3V/1.2V rails for FPGA configuration and memory interface circuits. Use Value: 300kHz–2MHz frequency programming allows EMI compliance in dense layouts; 22-pin TDFN simplifies routing vs. discrete solutions. | Use Scenario: Powering ASIC control logic and SerDes PHYs in 100G optical transceivers operating in data center thermal envelopes. IC Role / Device Role / Timing Role: Dual-output regulator supplying 1.8V LDO rail for SerDes analog blocks and 5V buck rail for digital logic. Use Value: –40°C to +125°C rating ensures reliability under high ambient temperatures; EPAD thermal path sustains 1.1A continuous load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270PWP | Single 3–17V buck + 300mA LDO; no PFM mode; fixed 500kHz or external sync only; 20-pin HTSSOP. | Limited input range and lower LDO current; less suitable for 24V/36V industrial inputs or high-current analog rails. | Select if cost-sensitive design accepts narrower VIN and reduced LDO capability; verify thermal derating in 125°C ambient. |
| MAX20006ATPA/VY+ | 3.5–36V buck + 300mA LDO; integrated FETs; 2.2MHz max frequency; 20-pin TQFN; AEC-Q100 qualified. | Automotive-grade qualification adds cost; LDO current limited to 300mA; no internal soft-start option. | Choose for automotive applications requiring AEC-Q100; otherwise, RAA2124214GNP#AA0 offers higher LDO current and broader industrial temp support. |
Compared with TPS65270PWP and MAX20006ATPA/VY+, the RAA2124214GNP#AA0 uniquely combines 40V input capability, 500mA LDO current, and ±1.8% accuracy over –40°C to +125°C - making it optimal for ruggedized industrial and cloud infrastructure power designs where input voltage margin and analog rail stability are critical.
Availability
RAA2124214GNP#AA0 is available at Aetrix Electronics and suitable for industrial control systems, medical monitoring devices, and distributed power architectures requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for RAA2124214GNP#AA0 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 industrial, automotive, and enterprise markets.
The RAA212421 product line delivers highly integrated, thermally robust dual-output regulators targeting space-constrained industrial and infrastructure applications where reliability across extended temperature ranges is mandatory.
FAQ
What is the maximum input voltage supported by the RAA2124214GNP#AA0 buck regulator?
The RAA2124214GNP#AA0 buck regulator supports a maximum input voltage of 40V, as specified in its absolute maximum ratings and recommended operating conditions. This allows direct connection to common industrial rails such as 24V and 36V without external pre-regulation. Operation above 40V risks permanent damage, and the device incorporates overvoltage protection on VIN1 to prevent latch-up under transient conditions.
Does the RAA2124214GNP#AA0 require external compensation components?
The RAA2124214GNP#AA0 supports both internal and external compensation. When COMP1 is tied directly to VCC1, internal compensation is enabled - eliminating external components. For custom loop response tuning, an RC network from COMP1 to GND enables external compensation. The RAA2124214GNP#AA0 datasheet provides design equations and stability guidelines for both configurations.
How does the RAA2124214GNP#AA0 handle overcurrent events on the buck output?
The RAA2124214GNP#AA0 employs hiccup-mode overcurrent protection. Upon detecting a current limit event (typical 1.6A peak), it disables switching, waits for an auto-restart period (~8 soft-start cycles), then attempts recovery. This prevents thermal runaway during sustained faults while allowing automatic recovery once the overload clears - a key safety feature for industrial deployments where manual reset is impractical.
What is the dropout voltage specification for the RAA2124214GNP#AA0 LDO under full load?
The RAA2124214GNP#AA0 LDO exhibits a typical dropout voltage of 45mV at VOUT2 = 2.5V and IOUT = 500mA, with a maximum of 90mV across temperature and process variation. This low dropout enables efficient operation even when VIN2 approaches VOUT2, extending usable battery life in portable instrumentation and minimizing thermal stress in thermally constrained enclosures.
Can the RAA2124214GNP#AA0's switching frequency be synchronized to an external clock source?
Yes, the RAA2124214GNP#AA0 supports external synchronization via the SYNC1 pin. An external clock signal (300kHz–2MHz) applied to SYNC1 triggers positive-edge synchronization, enabling phase alignment across multiple RAA2124214GNP#AA0 devices or other compatible converters. This reduces beat-frequency noise and simplifies EMI filtering in multi-rail power systems.
RAA2124214GNP#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 22-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 300kHz ~ 2MHz
- Voltage/Current - Output 1:
- Programmable, Programmable, 0.5V ~ 5.5V, 1.1A
- Voltage/Current - Output 2:
- Programmable, Programmable, 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#AA0 FAQ
1.How can I place an order for RAA2124214GNP#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2124214GNP#AA0 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#AA0 reliable?
The price and inventory of RAA2124214GNP#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2124214GNP#AA0 is usually 5 days.
3.What payment methods are accepted for RAA2124214GNP#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2124214GNP#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2124214GNP#AA0?
RAA2124214GNP#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2124214GNP#AA0 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#AA0?
For technical support, including RAA2124214GNP#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2124214GNP#AA0 requirements.
6.How does Aetrix verify that RAA2124214GNP#AA0 is sourced from the original manufacturer or authorized distributors?
All RAA2124214GNP#AA0 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#AA0 meets industry standards.
7.What is the process for return or replacement of RAA2124214GNP#AA0?
All RAA2124214GNP#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2124214GNP#AA0, 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#AA0 part is unused and in its original packaging.
Return procedure for RAA2124214GNP#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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