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Renesas RAA211250GNP#HA0
- Part No.:
- RAA211250GNP#HA0
- Manufacturer:
- Renesas
- Package:
- 20-PowerVFQFN
- Datasheet:
-
RAA211250GNP#HA0.pdf
- Description:
- IC REG BUCK ADJ 5A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,355
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Product details
Overview
RAA211250GNP#HA0 from Renesas Electronics is a 4.5V–30V input, 5A synchronous step-down DC/DC regulator in a 20-lead QFN (4mm × 3.5mm) package with internal compensation, programmable 200–800kHz switching frequency, and integrated 70mΩ/25mΩ high-side/low-side MOSFETs. It delivers stable 0.8V–90% VIN output for industrial power systems and telecom base station point-of-load conversion.
For engineers reviewing the RAA211250GNP#HA0 datasheet, RAA211250GNP#HA0 pinout, RAA211250GNP#HA0 application, or RAA211250GNP#HA0 equivalent, key selection considerations include its peak-current mode control architecture, internal soft-start (0.5ms), PFM/DEM light-load efficiency modes, external bias LDO (EBIAS) support, and comprehensive protection suite including cycle-by-cycle OCP, UVLO, short-circuit UVP, and thermal shutdown.
Technical Context
The RAA211250GNP#HA0 implements peak-current mode control with slope compensation and an internal transconductance error amplifier referenced to a ±0.5% (25°C) / ±1% (–40°C to 125°C) 0.8V feedback voltage. Its PWM clock supports fixed-frequency CCM operation and adaptive DCM at light loads via oscillator pulse-skipping.
It integrates dual LDOs for VCC generation-one biased from VIN, the other switchover-capable from EBIAS (3.3V–30V)-enabling efficiency optimization when using VOUT as bias. Protection logic includes valley current limit detection (6A threshold), hiccup-mode short-circuit recovery (23ms), and thermal shutdown at 155°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 30V - supports wide industrial and telecom input rails without pre-regulation |
| Output Current | Up to 5A continuous - sufficient for FPGA core, ASIC, or DSP point-of-load applications |
| Switching Frequency | Programmable 200–800kHz - enables trade-off between transient response (higher fSW) and conduction loss (lower fSW) |
| Feedback Reference | 0.8V ±0.5% at 25°C - ensures tight output regulation across load and temperature |
| Quiescent Current | 95µA typical - minimizes standby power in always-on systems |
| MOSFET RDS(on) | 70mΩ (HS) / 25mΩ (LS) - reduces conduction losses and thermal stress in QFN package |
| Soft-Start Time | Fixed 0.5ms internal - prevents inrush current during power-up without external components |
Pinout & Package
RAA211250GNP#HA0 is housed in a thermally enhanced 20-lead QFN package (4mm × 3.5mm, 0.5mm pitch) with exposed thermal pad connected to PGND. The package supports high-power density layouts with low θJA = 48.3°C/W (JEDEC board) and θJC = 6.0°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pins 1,13–19) | Power ground return | Source connection for integrated low-side FET; must be decoupled near VIN with low-ESR capacitors |
| SW (Pin 2) | Switch node | Phase node connecting HS drain, LS source, inductor, and bootstrap capacitor; high dV/dt path requiring tight layout |
| VIN (Pins 3,12,20) | Main input supply | Drain of HS FET and input to internal VCC LDO; requires bulk + ceramic input capacitance |
| BST (Pin 4) | Bootstrap supply | Provides gate drive voltage for HS FET via external 0.1µF X7R capacitor to SW; critical for high-side turn-on |
| FB (Pin 6) | Feedback input | Inverting input of error amplifier; sets output voltage via resistor divider (VOUT = 0.8V × (1 + RFB1/RFB2)) |
| AGND (Pin 7) | Analog ground reference | Low-noise ground for internal analog circuitry; must be tied to clean PCB ground plane, separate from PGND if possible |
| PG (Pin 8) | Power-good indicator | Open-drain output asserted high when VOUT is within ±12% of target; used for system sequencing and fault monitoring |
| FS (Pin 9) | Frequency select | Resistor-to-ground sets fSW from 200–800kHz; tie to VCC for default 400kHz operation |
| EN (Pin 11) | Enable control | High-voltage tolerant input; direct connection to VIN enables simple ON/OFF control with optional 1MΩ pulldown |
| EBIAS (Pin 5) | External bias input | Accepts 3.3–30V auxiliary supply (e.g., VOUT); enables VCC LDO switchover to reduce power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Internal loop compensation | Eliminates external Type-II/III compensation network, reducing BOM count and layout sensitivity |
| PFM and DEM light-load modes | Extends efficiency to <10mA loads by dynamically reducing switching frequency and disabling pulse skipping |
| Integrated EBIAS switchover LDO | Automatically selects lowest-loss bias source (VIN or external rail ≥3.1V), improving full-load efficiency by up to 2% |
| Programmable soft-start via SS pin (HTSSOP only) | Not applicable to RAA211250GNP#HA0 - QFN variant uses fixed 0.5ms internal soft-start, simplifying design |
| Comprehensive protection suite | Cycle-by-cycle peak/valley OCP, input UVLO (4.25V rising), output UVP (0.4V FB), thermal shutdown (155°C), and hiccup recovery |
Applications
| Industrial Power Systems | Distributed Power Supplies |
|---|---|
|
Use Scenario: Centralized 24V bus powering multiple isolated 3.3V/5V/12V rails in factory automation controllers. IC Role / Device Role / Timing Role: Primary non-isolated buck converter delivering regulated 5A output for downstream DC/DC modules and I/O interfaces. Use Value: Wide 4.5–30V input range accommodates brownout and surge conditions; 5A capability eliminates need for paralleling regulators. |
Use Scenario: Point-of-load regulation on high-density server backplanes where space and thermal management are constrained. IC Role / Device Role / Timing Role: Final-stage buck regulator converting intermediate 12V bus to 1.8V/3.3V for FPGA or memory subsystems. Use Value: Integrated 70mΩ/25mΩ MOSFETs and 0.5ms soft-start minimize board area and inrush stress; QFN thermal pad enables >5A operation at <75°C ambient. |
| Telecom Base Station Power | High-Voltage Single-Board Systems |
|
Use Scenario: 48V intermediate bus conversion to 3.3V for RF front-end ICs and digital signal processors in 5G macro base stations. IC Role / Device Role / Timing Role: High-efficiency, high-reliability buck stage operating continuously under 60°C ambient with strict ripple requirements. Use Value: 95µA quiescent current and PFM/DEM modes maintain >85% efficiency at 10mA load; ±1% load regulation ensures stable RF bias under dynamic loading. |
Use Scenario: Compact embedded computing module (e.g., COM Express) requiring 5A @ 3.3V from a 24V input with minimal external components. IC Role / Device Role / Timing Role: Main system power regulator with integrated MOSFETs, compensation, and PG signaling for host processor reset coordination. Use Value: Internal soft-start and power-good output enable deterministic boot sequencing; EBIAS support allows VOUT-biased operation to reduce heat generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4572GQB-A | 4.5–60V input, 5A, 500kHz fixed fSW, no EBIAS, larger 3mm × 4mm QFN | Lacks programmable frequency and external bias option; higher VIN max suits wider input ranges but increases gate drive complexity | Choose MPQ4572GQB-A only if 60V input tolerance is required and EBIAS/VCC optimization is unnecessary |
| TPS54560BQDDARQ1 | 3.5–60V input, 5A, 100–2500kHz adjustable fSW, external compensation, no integrated EBIAS LDO | Requires external compensation network and bias sourcing; higher max fSW aids ultra-fast transient response but increases EMI filtering burden | Choose TPS54560BQDDARQ1 when design demands >800kHz operation or automotive AEC-Q100 qualification (Grade 1) |
Compared with MPQ4572GQB-A and TPS54560BQDDARQ1, the RAA211250GNP#HA0 uniquely combines internal compensation, EBIAS switchover, and 200–800kHz programmability in a compact QFN-reducing component count, layout risk, and thermal overhead for industrial and telecom 24V/48V bus applications.
Availability
RAA211250GNP#HA0 is available at Aetrix Electronics and suitable for industrial power systems, distributed power supplies, and telecom base station power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for RAA211250GNP#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 specializing in microcontrollers, analog, power management, and connectivity solutions for industrial, automotive, and infrastructure markets.
The RAA211250GNP#HA0 belongs to Renesas' Power Management IC portfolio, designed specifically for high-efficiency, high-reliability point-of-load DC/DC conversion in demanding industrial and communications equipment.
FAQ
What is the maximum output current capability of the RAA211250GNP#HA0?
The RAA211250GNP#HA0 delivers up to 5A of continuous output current under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). Its integrated 70mΩ/25mΩ MOSFETs and QFN thermal pad enable this rating without external heatsinking in typical 4-layer board layouts. Derating applies above 85°C ambient per the thermal resistance data (θJA = 48.3°C/W).
Does the RAA211250GNP#HA0 require external compensation components?
No, the RAA211250GNP#HA0 features fully internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM cost, and improves stability across the full 200–800kHz switching frequency range and load conditions without tuning.
How does the EBIAS pin function on the RAA211250GNP#HA0?
The EBIAS pin on the RAA211250GNP#HA0 accepts an external 3.3–30V bias source (e.g., VOUT) and enables automatic switchover from the VIN-based VCC LDO when EBIAS exceeds 3.1V. This reduces power dissipation and improves efficiency-especially at high input voltages-by supplying internal circuitry from a lower-voltage rail.
What protection features are integrated into the RAA211250GNP#HA0?
The RAA211250GNP#HA0 integrates cycle-by-cycle peak and valley overcurrent protection, input UVLO (4.25V rising), output undervoltage (short-circuit) protection triggering at 0.4V FB, thermal shutdown at 155°C with 20°C hysteresis, and hiccup-mode recovery for sustained faults. All protections are hardware-based and require no configuration.
Can the switching frequency of the RAA211250GNP#HA0 be adjusted, and how?
Yes, the RAA211250GNP#HA0 switching frequency is programmable from 200kHz to 800kHz using a single resistor from the FS pin to AGND. A 261kΩ resistor sets 400kHz (default), while values from 121kΩ (800kHz) to 590kΩ (200kHz) are specified in the datasheet. Tying FS to VCC selects the default 400kHz mode.
RAA211250GNP#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 27V
- Current - Output:
- 5A
- Frequency - Switching:
- 400kHz, 200kHz ~ 800kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3.5x4)
RAA211250GNP#HA0 FAQ
1.How can I place an order for RAA211250GNP#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA211250GNP#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 RAA211250GNP#HA0 reliable?
The price and inventory of RAA211250GNP#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA211250GNP#HA0 is usually 5 days.
3.What payment methods are accepted for RAA211250GNP#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA211250GNP#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA211250GNP#HA0?
RAA211250GNP#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA211250GNP#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 RAA211250GNP#HA0?
For technical support, including RAA211250GNP#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA211250GNP#HA0 requirements.
6.How does Aetrix verify that RAA211250GNP#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA211250GNP#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 RAA211250GNP#HA0 meets industry standards.
7.What is the process for return or replacement of RAA211250GNP#HA0?
All RAA211250GNP#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA211250GNP#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 RAA211250GNP#HA0 part is unused and in its original packaging.
Return procedure for RAA211250GNP#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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