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Renesas RAA2124224GNP#HA0
- Part No.:
- RAA2124224GNP#HA0
- Manufacturer:
- Renesas
- Package:
- 22-WFDFN Exposed Pad
- Datasheet:
-
RAA2124224GNP#HA0.pdf
- Description:
- IC REG BUCK ADJ DL 22TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,241
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Product details
Overview
RAA2124224GNP#HA0 from Renesas is a dual-channel synchronous buck regulator integrating a 40V-input, 1.1A wide-VIN channel and a 5.5V-input, 1.5A low-VIN channel in a single 22-pin QFN package. It delivers high efficiency across light-to-full load via PFM/PWM mode selection, supports programmable switching frequency (300kHz–2MHz) on the wide-VIN channel, and operates at fixed 1MHz on the low-VIN channel for fast transient response-enabling compact power solutions in industrial control and FPGA point-of-load applications.
For engineers reviewing the RAA2124224GNP#HA0 datasheet, RAA2124224GNP#HA0 pinout, RAA2124224GNP#HA0 application, or RAA2124224GNP#HA0 equivalent, key selection criteria include dual-rail output flexibility, integrated PMOS high-side switch eliminating boot capacitor needs on the low-VIN channel, hiccup-mode overcurrent protection, and -40°C to +125°C industrial temperature operation with RoHS-compliant 3mm×6mm TDFN packaging.
Technical Context
The wide-VIN regulator employs an N-channel high-side MOSFET with external bootstrap supply (BOOT1), adjustable frequency via FS1 resistor, and selectable PFM/PWM operation controlled by SYNC1. Its error amplifier supports internal (50 µA/V) or external (230 µA/V) compensation, and it features hiccup-mode OCP with 17-clock-cycle blanking and 8-soft-start-cycle restart.
The low-VIN regulator uses a PMOS high-side switch enabling 100% duty cycle operation and eliminating boot capacitor requirements. It operates exclusively in PWM mode at 1MHz, includes internal (40 µA/V) or external (160 µA/V) compensation, and provides soft-stop discharge during disable via 100Ω pull-down on LX2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wide-VIN Input Range | 3V to 40V - supports 12V/24V/36V industrial rails and automotive battery transients. |
| Low-VIN Input Range | 2.7V to 5.5V - compatible with Li-ion, USB, and 3.3V/5V system rails. |
| Output Currents | 1.1A (wide-VIN), 1.5A (low-VIN) - sufficient for FPGA core I/O, microcontroller cores, and sensor subsystems. |
| Switching Frequencies | 300kHz–2MHz (wide-VIN, resistor-programmable); fixed 1MHz (low-VIN) - enables small inductor selection and EMI optimization. |
| Feedback Reference Voltage | 0.599V (wide-VIN), 0.600V (low-VIN) - enables precise output regulation down to sub-1V levels with standard resistor dividers. |
| Thermal Shutdown Threshold | +150°C with 25°C hysteresis - ensures reliable operation under sustained overload or poor airflow conditions. |
| Power-Good Accuracy | ±6% window (94%/120% thresholds) - provides robust output monitoring for system sequencing and fault detection. |
Pinout & Package
RAA2124224GNP#HA0 is housed in a RoHS-compliant 22-lead 3mm × 6mm TDFN (QFN) package with exposed thermal pad (EPAD). The package supports industrial temperature range (-40°C to +125°C) and features optimized thermal resistance (θJA = 31.3°C/W, θJC = 2.3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 | Wide-VIN input supply | Primary input for 3–40V rail; requires ≥4.7µF ceramic decoupling to GND1. |
| VIN2 | Low-VIN input supply | Input for 2.7–5.5V rail; powers low-VIN regulator and internal LDO; requires ≥10µF ceramic decoupling. |
| LX1 / LX2 | Switch node outputs | Connect to external inductors; LX1 drives N-MOS high-side (needs BOOT1 cap); LX2 drives PMOS high-side (no boot cap needed). |
| FB1 / FB2 | Feedback inputs | Inverting inputs to error amplifiers; set output voltage via resistor dividers (VOUT = VFB × (1 + R1/R2)). |
| COMP1 / COMP2 | Error amplifier outputs | Select internal compensation (tie to VCC1/VIN2) or external RC network for loop stability tuning. |
| PG1 / PG2 | Open-drain power-good outputs | Indicate regulation status; internally pulled up to 5MΩ; require external pull-up for logic-level interfacing. |
| EN1 / EN2 | Enable inputs | Logic-controlled startup: EN1 >1V enables wide-VIN; EN2 >1.4V enables low-VIN; both pull to GND for shutdown. |
| SYNC1 | Mode/sync control | High = forced PWM; low = PFM; floating = auto-PWM/PFM; external clock input for synchronization (300kHz–2MHz). |
| FS1 | Frequency select | Tie to VCC1 for 500kHz; connect resistor to GND1 to program 300kHz–2MHz switching frequency. |
| SS1 | Soft-start control | Capacitor-to-ground sets ramp time; tie to VCC1 for internal 2ms soft-start. |
| BOOT1 | Bootstrap supply | Provides gate drive voltage for N-MOS high-side switch; requires 100nF ceramic cap to LX1. |
| GND1 / GND2 / GND (EPAD) | Ground terminals | GND1: power ground for wide-VIN channel; GND2: power ground for low-VIN channel; EPAD: thermal and electrical ground requiring ≥5 vias. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-buck architecture | Reduces BOM count by eliminating two discrete regulators, external MOSFETs, and associated gate drivers. |
| PMOS high-side on low-VIN channel | Enables 100% duty cycle operation and eliminates boot capacitor, saving board space and cost. |
| Programmable light-load mode | PFM improves light-load efficiency; PWM ensures constant frequency for EMI-sensitive designs-selectable per channel. |
| Hiccup-mode overcurrent protection | Prevents thermal runaway during sustained short-circuit by cycling enable after 8 soft-start intervals. |
| Independent soft-start and power-good | Allows staggered power sequencing between rails and reliable system-level reset assertion. |
Applications
| Industrial Control Systems | FPGA & ASIC Core Power |
|---|---|
Use Scenario: Powering PLC I/O modules, motor drivers, and fieldbus interfaces operating from 24V DC rails with strict thermal limits. IC Role / Device Role / Timing Role: Dual-rail regulator supplying isolated 5V (I/O) and 1.2V (logic) from a single 24V input. Use Value: Eliminates need for separate pre-regulators and LDOs while maintaining ±1% output accuracy across -40°C to +85°C ambient. | Use Scenario: Delivering tightly regulated core and auxiliary voltages to Xilinx Artix-7 or Intel Cyclone V FPGAs in edge computing nodes. IC Role / Device Role / Timing Role: Wide-VIN channel supplies 1.0V/1.1A to FPGA core; low-VIN channel supplies 2.5V/1.5A to I/O banks. Use Value: 1MHz low-VIN switching enables <2.2µH inductors and <100mV load-transient droop, meeting FPGA dynamic current slew requirements. |
| Medical Diagnostic Equipment | Cloud Infrastructure Point-of-Load |
Use Scenario: Powering imaging sensor arrays and analog front-ends in portable ultrasound devices with battery-backed 3.7V–4.2V input. IC Role / Device Role / Timing Role: Low-VIN channel supplies 1.8V/1.5A to CMOS image sensors; wide-VIN channel supplies 3.3V/1.1A to ADCs and digital logic. Use Value: PFM mode extends battery runtime below 10mA load; 125°C junction rating supports sealed enclosure thermal profiles. | Use Scenario: Providing 0.85V/1.1A and 1.8V/1.5A to server SoCs and memory buffers in 1U rack-mounted switches. IC Role / Device Role / Timing Role: Dual-output regulator replacing discrete buck controllers and MOSFETs in dense 48V intermediate bus architectures. Use Value: 3mm×6mm footprint saves >35% PCB area vs. two discrete 3×3mm regulators; thermal pad enables direct heatsink attachment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270PWP | Single 4.5–18V input, dual 3A/2A outputs; no wide-VIN capability; fixed 500kHz/1MHz frequencies; no PFM mode. | Suitable only for mid-range input systems (e.g., 12V intermediate bus); lacks 40V tolerance for industrial transients. | Choose when input is strictly ≤18V and higher current per rail is required without wide-VIN robustness. |
| MP2491DS-LF-Z | Single 4.5–36V input, dual 2A/2A outputs; fixed 500kHz; no low-VIN optimization; no PMOS high-side; requires boot capacitor on both channels. | Higher max input than RAA2124224GNP#HA0's low-VIN channel but no dedicated low-VIN path-less efficient below 3.3V. | Choose when dual 2A outputs from one input rail are needed, and boot capacitor overhead is acceptable. |
Compared with TPS65270PWP and MP2491DS-LF-Z, the RAA2124224GNP#HA0 uniquely combines 40V wide-VIN resilience with a dedicated 5.5V-optimized channel featuring PMOS high-side and no boot capacitor-enabling smaller solution size and broader input adaptability in mixed-rail industrial and medical systems.
Availability
RAA2124224GNP#HA0 is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostic equipment, and cloud infrastructure point-of-load applications requiring stable component supply, extended temperature operation, and dual-rail design flexibility.
Supply support for RAA2124224GNP#HA0 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 delivering microcontrollers, analog, power, and SoC products for automotive, industrial, infrastructure, and IoT applications.
The RAA212422 product line targets high-density, multi-rail power management in space-constrained industrial and medical systems-designed to replace discrete buck controllers and reduce bill-of-materials complexity while maintaining full-feature protection and precision regulation.
FAQ
What input voltage ranges does the RAA2124224GNP#HA0 support for each channel?
The RAA2124224GNP#HA0 supports 3V to 40V on its wide-VIN channel (VIN1) and 2.7V to 5.5V on its low-VIN channel (VIN2). These independent input domains allow simultaneous operation from disparate sources-such as a 24V industrial bus and a 3.3V auxiliary rail-without cross-coupling or level-shifting. Each channel maintains full regulation, protection, and power-good signaling within its specified range.
Does the RAA2124224GNP#HA0 require external boot capacitors for both buck channels?
No-the RAA2124224GNP#HA0 requires an external 100nF ceramic capacitor from BOOT1 to LX1 only for the wide-VIN channel, which uses an N-channel high-side MOSFET. The low-VIN channel integrates a PMOS high-side switch, eliminating the need for any boot capacitor-a key differentiator that reduces component count, layout complexity, and board area. This design choice directly enables simpler, more compact power solutions.
How is light-load efficiency managed on the RAA2124224GNP#HA0 wide-VIN channel?
The RAA2124224GNP#HA0 wide-VIN channel supports selectable PFM (pulse-frequency modulation) mode for improved light-load efficiency, activated by pulling SYNC1 low or leaving it floating. In PFM mode, the regulator skips pulses to maintain regulation while minimizing switching losses-achieving >85% efficiency at 10mA load with 12V input and 5V output. Forced PWM mode (SYNC1 high) ensures constant frequency for EMI control but trades off light-load efficiency.
What protection features are implemented in the RAA2124224GNP#HA0?
The RAA2124224GNP#HA0 implements comprehensive protection including thermal shutdown (+150°C trip with 25°C hysteresis), hiccup-mode overcurrent protection (with 17-clock-cycle blanking and automatic restart), input UVLO (2.5V/2.7V rising threshold on VIN2), and power-good monitoring with ±6% accuracy windows. Both channels feature independent enable pins, soft-start control, and open-drain PG outputs-enabling robust fault handling and safe power sequencing in mission-critical applications.
Can the RAA2124224GNP#HA0 be synchronized to an external clock source?
Yes-the RAA2124224GNP#HA0 wide-VIN channel supports external synchronization via the SYNC1 pin. When driven with a clean TTL/CMOS clock signal (300kHz–2MHz), the regulator locks its switching frequency to the external source on the positive edge. This capability enables EMI reduction through frequency dithering or alignment with system clocks-critical in noise-sensitive applications like medical imaging or high-speed data acquisition where switching artifacts must be avoided.
RAA2124224GNP#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 22-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V, 3V
- Voltage - Input (Max):
- 5.5V, 40V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V, 40V
- Current - Output:
- 1.1A, 1.5A
- Frequency - Switching:
- 500kHz, 300kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 22-TDFN (3x6)
RAA2124224GNP#HA0 FAQ
1.How can I place an order for RAA2124224GNP#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2124224GNP#HA0 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 RAA2124224GNP#HA0 reliable?
The price and inventory of RAA2124224GNP#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2124224GNP#HA0 is usually 5 days.
3.What payment methods are accepted for RAA2124224GNP#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2124224GNP#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2124224GNP#HA0?
RAA2124224GNP#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2124224GNP#HA0 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 RAA2124224GNP#HA0?
For technical support, including RAA2124224GNP#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2124224GNP#HA0 requirements.
6.How does Aetrix verify that RAA2124224GNP#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA2124224GNP#HA0 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 RAA2124224GNP#HA0 meets industry standards.
7.What is the process for return or replacement of RAA2124224GNP#HA0?
All RAA2124224GNP#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2124224GNP#HA0, 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 RAA2124224GNP#HA0 part is unused and in its original packaging.
Return procedure for RAA2124224GNP#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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