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Renesas RAA211250GSP#HA0
- Part No.:
- RAA211250GSP#HA0
- Manufacturer:
- Renesas
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
RAA211250GSP#HA0.pdf
- Description:
- IC REG BUCK ADJ 5A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,794
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Product details
Overview
RAA211250GSP#HA0 from Renesas Electronics is a 4.5V–30V input, 5A continuous-output synchronous buck regulator in a 20-lead QFN (4mm × 3.5mm) package, featuring internal compensation, programmable 200–800kHz switching frequency, and integrated 70mΩ/25mΩ high-side/low-side MOSFETs. It delivers stable 0.8V–90% VIN adjustable output for industrial point-of-load and telecom base station power rails.
For engineers reviewing the RAA211250GSP#HA0 datasheet, RAA211250GSP#HA0 pinout, RAA211250GSP#HA0 application, or RAA211250GSP#HA0 equivalent, key selection criteria 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 RAA211250GSP#HA0 implements peak-current mode control with slope compensation and an internal transconductance error amplifier referenced to a 0.8V ±0.5% (25°C) / ±0.8% (–40°C to +125°C) feedback voltage. Its COMP signal drives PWM timing by comparing sensed high-side current plus slope compensation against the error amplifier output.
It supports three operating modes: fixed-frequency CCM (200–800kHz), discontinuous conduction mode (DCM) for light-load efficiency, and hiccup-mode fault recovery during sustained overcurrent or output short conditions. The device integrates dual LDOs - one powered from VIN, the other from EBIAS - enabling automatic switchover to VOUT bias when EBIAS >3.1V.
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 - enables single-chip 3.3V/5V/12V PoL conversion for FPGA, ASIC, and DSP core supplies. |
| Switching Frequency | Programmable 200–800kHz - allows optimization of size (higher fSW → smaller L/C) vs. efficiency (lower fSW → lower switching loss). |
| Feedback Reference | 0.8V ±0.004V (25°C), ±0.008V (–40°C to +125°C) - ensures tight output regulation across temperature and load. |
| Quiescent Current | 95µA typical - minimizes standby power in always-on systems such as remote sensors or network edge devices. |
| MOSFET RDS(on) | 70mΩ HS / 25mΩ LS (QFN) - reduces conduction losses and thermal stress at full 5A load. |
| Protection Features | Cycle-by-cycle peak/valley OCP, VIN UVLO (4.25V rising), VOUT UVP (0.4V FB threshold), thermal shutdown (155°C), hiccup recovery - enables robust operation in unattended equipment. |
Pinout & Package
RAA211250GSP#HA0 is housed in a thermally enhanced 20-lead QFN package (4mm × 3.5mm, 0.5mm pitch) with exposed thermal pad (PAD) connected to AGND. The package supports high-power density layouts with low θJA = 48.3°C/W (JEDEC board) and θJC = 6.0°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13–19 | PGND | Power ground return for low-side FET source - must be tied directly to PCB ground plane with multiple thermal vias under exposed pad. |
| 2 | SW | Switch node - connects to inductor and bootstrap capacitor; carries high di/dt; requires minimal loop area for EMI control. |
| 3, 12, 20 | VIN | Main input supply - powers high-side FET drain and internal VIN-LDO; requires local 10µF+ ceramic decoupling to PGND. |
| 4 | BST | Bootstrap supply - connected via 0.1µF X7R ceramic to SW; provides gate drive voltage for high-side FET. |
| 5 | EBIAS | Auxiliary bias input - accepts 3.3V–30V external rail (e.g., VOUT); enables higher efficiency by reducing VIN-derived LDO losses. |
| 6 | FB | Feedback input - senses output via resistor divider; internal 0.8V reference sets VOUT = 0.8 × (1 + RFB1/RFB2). |
| 7 | AGND | Analog ground - reference for FB, SS, FS, PG; must connect to clean ground plane separate from noisy PGND paths. |
| 8 | PG | Open-drain power-good - asserts high when VOUT is within ±12% of target after soft-start; requires external pull-up (≤3.3V). |
| 9 | FS | Frequency select - tie to VCC for 400kHz default; connect resistor to AGND for 200–800kHz programming per Table 1. |
| 10 | EN | Enable input - high-voltage tolerant (up to 35V); logic-high >1.3V turns on regulator; includes 2.5µs deglitch filter. |
| PAD | Thermal Pad | Exposed bottom copper - must be soldered to AGND plane with ≥9 thermal vias (0.3mm diameter) for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Compensation | Eliminates need for external Type-II/III compensation network - reduces BOM count and layout sensitivity across 200–800kHz range. |
| Programmable Soft-Start | Fixed 0.5ms internal soft-start (QFN variant) - prevents inrush current and output overshoot during power-up. |
| PFM + DEM Light-Load Mode | Disables pulse skipping and enters discontinuous mode below ~25% load - maintains >85% efficiency at 10mA output. |
| Integrated EBIAS LDO Switchover | Automatically selects lowest-loss bias source (VIN or VOUT) - improves full-load efficiency by up to 2.5% when VOUT < VIN. |
| Robust Protection Suite | Includes valley current limit, input UVLO hysteresis (325mV), PG fault detection, and thermal shutdown with 20°C hysteresis - ensures safe restart after fault clearance. |
Applications
| Industrial Power Systems | Distributed Power Supplies |
|---|---|
|
Use Scenario: Centralized 24V DC bus powering multiple isolated and non-isolated DC/DC converters in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Primary non-isolated step-down regulator delivering 3.3V/5V/12V rails to microcontrollers, I/O interfaces, and analog front-ends. Use Value: Wide 4.5–30V input accommodates brownout and battery-backed operation; 5A output supports multi-rail consolidation; thermal shutdown protects against enclosure overheating. |
Use Scenario: Point-of-load conversion on high-density server blades where space and thermal management are critical. IC Role / Device Role / Timing Role: High-efficiency buck converter supplying core voltage to FPGAs or ASICs with dynamic load steps up to 5A. Use Value: Programmable 200–800kHz switching enables optimal trade-off between inductor size and transient response; PFM/DEM extends battery life in portable test equipment. |
| Telecom Base Station Power | High-Voltage Single-Board Systems |
|
Use Scenario: Intermediate bus conversion in 48V-powered macrocell and small-cell radio units with strict EMI and reliability requirements. IC Role / Device Role / Timing Role: Secondary buck stage stepping 48V down to 5V/3.3V for RF transceivers, clock ICs, and baseband processors. Use Value: Cycle-by-cycle OCP and hiccup-mode recovery prevent catastrophic failure during antenna VSWR faults; 30V max input withstands telecom surge transients. |
Use Scenario: Compact embedded computing platforms (e.g., COM Express modules) requiring multiple regulated rails from a single high-voltage input. IC Role / Device Role / Timing Role: Main system power regulator generating 5V for USB, PCIe, and memory interfaces from 12–24V input. Use Value: Internal 70mΩ/25mΩ MOSFETs reduce footprint vs. controller+external FET solutions; QFN package enables <100mm² solution size with 3×47µF output capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z (Monolithic Power) | 3.3–36V input, 0.8–30V output, 0.6A max, no internal compensation, requires external loop components. | Limited to sub-1A loads; lacks EBIAS, PFM/DEM, and integrated soft-start - suitable only for low-power auxiliary rails. | Select RAA211250GSP#HA0 for 5A PoL needs with internal compensation and advanced light-load efficiency; MP2451 is viable only for <1A cost-sensitive designs. |
| TPS54560BQPWPRQ1 (TI) | 3.5–60V input, 0.8–58V output, 5A, external compensation, 100µA IQ, no EBIAS pin, fixed 400kHz or resistor-programmable 200–2500kHz. | Higher VIN max (60V) but larger HTSSOP-20 package (6.5mm × 4.4mm); lacks integrated EBIAS LDO switchover and valley OCP. | Choose RAA211250GSP#HA0 for compact QFN layout, superior light-load efficiency via PFM/DEM, and dual-bias flexibility; TPS54560B is better for ultra-wide VIN (>30V) or higher fSW (>800kHz) needs. |
Compared with MP2451DT-LF-Z and TPS54560BQPWPRQ1, the RAA211250GSP#HA0 uniquely combines 5A capability, internal compensation, EBIAS-enabled efficiency optimization, and QFN-based thermal performance - making it the preferred choice for space-constrained, high-reliability industrial and telecom PoL applications.
Availability
RAA211250GSP#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 traceable sourcing.
Supply support for RAA211250GSP#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 high-performance, reliable analog, power, and embedded processing solutions for automotive, industrial, infrastructure, and IoT markets.
The RAA211250GSP#HA0 belongs to Renesas' Power Management IC portfolio, designed specifically for high-efficiency, high-current DC/DC conversion in space-constrained industrial and communications equipment where thermal performance and protection robustness are critical.
FAQ
What is the maximum output current rating for the RAA211250GSP#HA0?
The RAA211250GSP#HA0 is rated for up to 5A of continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). This rating assumes use of the 20-lead QFN package with adequate copper area and thermal vias. Peak current limit is 8.5A (typical), but sustained operation above 5A requires derating based on ambient temperature and airflow.
Does the RAA211250GSP#HA0 require external compensation components?
No, the RAA211250GSP#HA0 features fully internal loop compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM count, and improves stability across its entire 200–800kHz switching frequency range and load conditions - a key differentiator versus controller-only alternatives.
How does the EBIAS pin improve efficiency in the RAA211250GSP#HA0?
The EBIAS pin on the RAA211250GSP#HA0 allows connection of an external bias source (e.g., VOUT) to power the internal LDOs. When EBIAS >3.1V, the device automatically switches from VIN-derived bias to the lower-voltage EBIAS rail - reducing power dissipation in the bias LDO and improving full-load efficiency by up to 2.5% compared to VIN-only operation.
What protection features are integrated into the RAA211250GSP#HA0?
The RAA211250GSP#HA0 integrates cycle-by-cycle peak and valley overcurrent protection, input UVLO (4.25V rising threshold), output undervoltage protection (0.4V FB threshold), thermal shutdown (155°C), and hiccup-mode recovery. These features ensure safe operation during startup, overload, short-circuit, and thermal stress events without requiring external circuitry.
Can the RAA211250GSP#HA0 operate with a 3.3V input voltage?
No - the RAA211250GSP#HA0 has a minimum input voltage of 4.5V per its absolute maximum ratings and recommended operating conditions. Operation below 4.5V violates specification and may result in improper startup, regulation failure, or undefined behavior. For 3.3V-input applications, consider Renesas' RAA2296xx family or alternative low-VIN buck regulators.
RAA211250GSP#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- 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:
- 16-HTSSOP
RAA211250GSP#HA0 FAQ
1.How can I place an order for RAA211250GSP#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA211250GSP#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 RAA211250GSP#HA0 reliable?
The price and inventory of RAA211250GSP#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA211250GSP#HA0 is usually 5 days.
3.What payment methods are accepted for RAA211250GSP#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA211250GSP#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA211250GSP#HA0?
RAA211250GSP#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA211250GSP#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 RAA211250GSP#HA0?
For technical support, including RAA211250GSP#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA211250GSP#HA0 requirements.
6.How does Aetrix verify that RAA211250GSP#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA211250GSP#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 RAA211250GSP#HA0 meets industry standards.
7.What is the process for return or replacement of RAA211250GSP#HA0?
All RAA211250GSP#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA211250GSP#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 RAA211250GSP#HA0 part is unused and in its original packaging.
Return procedure for RAA211250GSP#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RAA211250GSP#HA0 Tags
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