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Renesas RAA2124224GNP#AA0
- Part No.:
- RAA2124224GNP#AA0
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- -
- Datasheet:
-
RAA2124224GNP#AA0.pdf
- Description:
- BULK, WIDE VIN 1.1A WITH LOW VIN
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
RAA2124224GNP#AA0 from Renesas Electronics is a dual-channel synchronous buck regulator IC integrating a 40V-input/1.1A channel and a 5.5V-input/1.5A channel in one monolithic QFN package. It delivers high efficiency across wide input ranges (3–40V and 2.7–5.5V), supports PFM/PWM light-load operation, and enables compact point-of-load designs for industrial and embedded power systems.
For engineers reviewing the RAA2124224GNP#AA0 datasheet, RAA2124224GNP#AA0 pinout, RAA2124224GNP#AA0 application, or RAA2124224GNP#AA0 equivalent, key selection criteria include dual-output voltage programmability, independent soft-start control, integrated MOSFETs with <312mΩ high-side RDS(on), 1MHz fixed-frequency low-VIN stage, and thermal shutdown with 150°C trip point.
Technical Context
The RAA2124224GNP#AA0 implements two independent synchronous buck regulators: Channel 1 uses an N-channel high-side MOSFET (312mΩ) and PFM/PWM mode selection via SYNC1; Channel 2 employs a PMOS high-side switch (117mΩ), eliminating boot capacitor requirements and enabling 100% duty cycle operation. Both channels integrate error amplifiers with selectable internal/external compensation and dedicated power-good outputs.
Channel 1 supports adjustable switching frequency (300kHz–2MHz) via FS1 resistor biasing and features hiccup-mode overcurrent protection with 1.3–1.8A peak current limit. Channel 2 operates at fixed 1MHz, provides fast transient response, and includes discharge-mode soft-stop during disable to prevent reverse current flow into the output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wide VIN Input Range | 3V to 40V - supports 12V/24V/36V industrial rails and automotive cold-crank conditions |
| Low VIN Input Range | 2.7V to 5.5V - compatible with Li-ion battery, USB, and 3.3V/5V system rails |
| Output Current Capability | 1.1A (Channel 1) and 1.5A (Channel 2) - sufficient for FPGA core, DDR memory, and microcontroller I/O rails |
| Switching Frequency | 500kHz default (Channel 1, adjustable); 1MHz fixed (Channel 2) - balances efficiency vs. size for inductor selection |
| Feedback Reference Voltage | 0.599V ±10mV (Channel 1); 0.600V ±5mV (Channel 2) - enables precise output regulation down to 0.6V |
| Thermal Shutdown Threshold | 150°C with 25°C hysteresis - protects against sustained overload or poor PCB thermal design |
| Package | 22-lead 3mm × 6mm TQFN - RoHS-compliant, exposed pad for enhanced thermal dissipation |
Pinout & Package
RAA2124224GNP#AA0 is housed in a 22-lead 3mm × 6mm TQFN package with exposed thermal pad (EPAD). The package supports industrial temperature range (−40°C to +125°C) and requires ≥5 vias connecting EPAD to ground plane for thermal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 | High-VIN channel input supply | Accepts 3–40V; powers internal LDO (VCC1) and high-side gate driver; requires ≥4.7µF local ceramic decoupling |
| EN1 | High-VIN channel enable | Logic-high >1V enables regulator; tied to VIN1 for automatic startup; not compatible with VCC1 connection |
| FB1 | High-VIN feedback node | Inverting input of error amplifier; sets output voltage via resistor divider; monitors PG1 status |
| LX1 | High-VIN switch node | Connects to external inductor; drives internal N-channel high-side and P-channel low-side MOSFETs |
| VIN2 | Low-VIN channel input supply | Accepts 2.7–5.5V; powers low-VIN bias circuitry; requires ≥10µF local ceramic decoupling |
| EN2 | Low-VIN channel enable | Logic-high >1.4V enables regulator; internal 100Ω discharge path on LX2 during disable |
| FB2 | Low-VIN feedback node | Inverting input of error amplifier; sets output voltage (0.6V to VIN2); used for PG2 monitoring |
| LX2 | Low-VIN switch node | Connects to external inductor; driven by integrated PMOS high-side and NMOS low-side switches |
| GND1 / GND2 / GND | Power and signal grounds | Separate ground pins for each channel reduce noise coupling; EPAD must be connected to system GND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS high-side (Channel 2) | Eliminates need for external boot capacitor, reducing BOM count and layout complexity |
| Selectable PFM/PWM mode (Channel 1) | Improves light-load efficiency without sacrificing output regulation accuracy or noise performance |
| Independent soft-start control (SS1, EN2) | Prevents inrush current and allows sequencing of dual outputs for FPGA or processor power domains |
| Hiccup-mode overcurrent protection | Auto-restarts after fault clearance, avoiding latch-up while protecting external components |
| 100% duty-cycle capability (Channel 2) | Enables dropout operation near input rail-critical for battery-powered applications with tight voltage margins |
| Dual power-good outputs (PG1, PG2) | Open-drain signals with internal 5MΩ pull-ups enable reliable system power sequencing and fault detection |
Applications
| Industrial Control Systems | FPGA & ASIC Core Power |
|---|---|
|
Use Scenario: Powering PLC I/O modules and sensor interfaces requiring isolated 5V and 3.3V rails from 24V DC bus. IC Role / Device Role / Timing Role: Dual-output buck regulator providing tightly regulated, sequenced supplies with independent enable and PG signaling. Use Value: Eliminates need for discrete regulators and external sequencing ICs-reducing board area by >35% versus dual single-channel solutions. |
Use Scenario: Delivering core (1.2V) and I/O (2.5V or 3.3V) voltages to Xilinx Artix-7 or Intel MAX 10 FPGAs. IC Role / Device Role / Timing Role: High-efficiency, fast-transient dual regulator supporting dynamic load steps up to 1.5A with <100µs recovery. Use Value: Fixed 1MHz switching on low-VIN channel enables use of 1.5µH inductors, cutting solution size by 40% vs. lower-frequency alternatives. |
| Medical Portable Devices | Cloud Infrastructure Point-of-Load |
|
Use Scenario: Powering battery-backed diagnostic sensors and display controllers in handheld ultrasound units using Li-ion (3.0–4.2V) and 12V auxiliary inputs. IC Role / Device Role / Timing Role: Dual-buck IC delivering 1.8V (sensor analog) and 3.3V (MCU/communication) from shared battery rail with ultra-low quiescent current. Use Value: PFM mode reduces no-load IQ to 7mA (Channel 2), extending battery runtime beyond 12 hours in standby. |
Use Scenario: Generating 0.85V CPU core and 1.2V memory rails in 1U server PSUs where space and thermal density are constrained. IC Role / Device Role / Timing Role: Compact dual-regulator replacing two separate ICs, with thermal shutdown and hiccup OCP meeting IPC-9592 reliability standards. Use Value: 3mm×6mm footprint and 2.3°C/W θJC allow direct mounting to heatsink-enabling 1.1A continuous operation at +85°C ambient. |
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 |
|---|---|---|---|
| MP2451DT-LF-Z (Monolithic Power) | Single-channel 36V/2A buck; no integrated low-VIN regulator; requires external sequencing logic | Suitable only when dual outputs are generated separately; lacks 1MHz low-VIN stage and PMOS architecture | Choose if higher single-rail current (>1.5A) is needed and board space permits two ICs plus sequencing circuitry |
| TPS54202DDCR (Texas Instruments) | Single-channel 60V/2A buck with integrated FETs; no second regulator; supports 2.5–60V input | Cannot replace dual-output functionality without adding a second regulator; lacks dedicated low-VIN optimization | Select when wide-input single-rail design dominates and cost-per-amp is prioritized over integration density |
Compared with MP2451DT-LF-Z and TPS54202DDCR, the RAA2124224GNP#AA0 uniquely integrates two functionally asymmetric buck stages-enabling simultaneous wide- and narrow-input conversion without external coordination, reducing component count by ≥7 parts and eliminating timing-critical sequencing design effort.
Availability
RAA2124224GNP#AA0 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 guaranteed RoHS-compliant manufacturing.
Supply support for RAA2124224GNP#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 timing solutions for industrial, automotive, and enterprise applications.
The RAA212422 product line delivers highly integrated dual-output DC/DC regulators targeting space-constrained, thermally demanding embedded systems where reliability, efficiency, and design simplicity are critical.
FAQ
What is the maximum junction temperature specification for the RAA2124224GNP#AA0?
The RAA2124224GNP#AA0 has a maximum junction temperature of +150°C, with thermal shutdown activated at this threshold and 25°C hysteresis to ensure safe recovery. This rating is validated per JEDEC JESD78E Class 2 Level A latch-up testing and supports continuous operation up to +125°C ambient when mounted on a properly designed 4-layer PCB with ≥5 thermal vias to solid ground plane.
Can the RAA2124224GNP#AA0 operate with only the low-VIN channel powered?
Yes, the RAA2124224GNP#AA0 supports independent operation: the low-VIN channel (VIN2, EN2) functions fully with VIN1 unpowered, provided VIN2 is within 2.7–5.5V and EN2 >1.4V. However, VCC1 (the internal 5V LDO) remains inactive, so pins dependent on VCC1-such as FS1, SYNC1, and COMP1-must be externally biased or left floating with appropriate pull-downs per datasheet guidance.
How is output voltage set for each channel of the RAA2124224GNP#AA0?
Each channel's output voltage is set via an external resistor divider from VOUT to FBx (x=1 or 2), referenced to the internal 0.599V (Channel 1) or 0.600V (Channel 2) feedback voltage. For example, a 5V output on Channel 1 uses R1 = 90.9kΩ and R2 = 4.75kΩ (per Table 1), yielding VOUT = 0.599V × (1 + R1/R2). The same principle applies to Channel 2 with R3/R4 values from Table 2.
Does the RAA2124224GNP#AA0 require external compensation components?
No-the RAA2124224GNP#AA0 supports both internal and external compensation. Internal compensation is enabled by tying COMP1 to VCC1 (Channel 1) or COMP2 to VIN2 (Channel 2). External compensation uses an RC network from COMPx to GND, allowing loop tuning for specific inductor/capacitor combinations and load transient requirements per "Loop Compensation Design" section of the FN9326 datasheet.
What is the purpose of the NC1 and NC2 pins on the RAA2124224GNP#AA0?
NC1 (Pin 11) and NC2 (Pin 12) are no-connect pins with no internal connection. They must remain unconnected on the PCB-neither routed nor soldered-to avoid unintended parasitic coupling or mechanical stress on the die. These pins are reserved for future product variants and have no functional role in the RAA2124224GNP#AA0.
RAA2124224GNP#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Topology:
- -
- Number of Outputs:
- -
- Frequency - Switching:
- -
- Voltage/Current - Output 1:
- -
- Voltage/Current - Output 2:
- -
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- -
- w/Supervisor:
- -
- w/Sequencer:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
RAA2124224GNP#AA0 FAQ
1.How can I place an order for RAA2124224GNP#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2124224GNP#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 RAA2124224GNP#AA0 reliable?
The price and inventory of RAA2124224GNP#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2124224GNP#AA0 is usually 5 days.
3.What payment methods are accepted for RAA2124224GNP#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2124224GNP#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2124224GNP#AA0?
RAA2124224GNP#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2124224GNP#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 RAA2124224GNP#AA0?
For technical support, including RAA2124224GNP#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2124224GNP#AA0 requirements.
6.How does Aetrix verify that RAA2124224GNP#AA0 is sourced from the original manufacturer or authorized distributors?
All RAA2124224GNP#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 RAA2124224GNP#AA0 meets industry standards.
7.What is the process for return or replacement of RAA2124224GNP#AA0?
All RAA2124224GNP#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2124224GNP#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 RAA2124224GNP#AA0 part is unused and in its original packaging.
Return procedure for RAA2124224GNP#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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