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Renesas RAA211450GSP#HA0
- Part No.:
- RAA211450GSP#HA0
- Manufacturer:
- Renesas
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
RAA211450GSP#HA0.pdf
- Description:
- IC REG BUCK ADJ 5A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,930
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Product details
Overview
RAA211450GSP#HA0 from Renesas Electronics is a synchronous step-down (Buck) DC/DC regulator supporting 4.5V–42V input, delivering up to 5A continuous output current with ±0.5% load regulation accuracy at 25°C and internal loop compensation. It features programmable 200–800kHz switching frequency, integrated 70mΩ/25mΩ MOSFETs (QFN), and operates in industrial power systems requiring high-voltage input and stable point-of-load conversion.
For engineers reviewing the RAA211450GSP#HA0 datasheet, RAA211450GSP#HA0 pinout, RAA211450GSP#HA0 application, or RAA211450GSP#HA0 equivalent, key selection considerations include input voltage range compatibility, thermal performance in QFN-20 package, light-load efficiency via PFM/DEM modes, and external bias (EBIAS) support for improved system-level power loss reduction.
Technical Context
The RAA211450GSP#HA0 implements peak-current mode control with internal slope compensation and transconductance error amplifier, enabling stable regulation across 0.8V–90% of VIN output range. Its dual overcurrent protection-cycle-by-cycle peak (8.5A typ.) and valley (6A typ.) current limiting-ensures robust fault response during short-circuit or overload events.
It supports three operational modes: fixed-frequency PWM (200–800kHz), discontinuous conduction mode (DCM) for light-load efficiency, and pulse-frequency modulation (PFM) with diode emulation (DEM). The device integrates an external bias LDO input (EBIAS) and internal VCC LDO, allowing efficient operation when powered from VOUT or auxiliary rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 42V - enables direct integration into 12V, 24V, and 36V industrial and telecom power rails without pre-regulation. |
| Output Current | Up to 5A continuous - supports mid-power applications such as FPGA core supplies and baseband processors. |
| Switching Frequency | Programmable 200–800kHz - allows optimization between transient response (higher fSW) and efficiency (lower fSW). |
| Feedback Reference | 0.8V ±0.5% at 25°C - ensures precise output voltage setting with minimal drift over temperature (-40°C to +125°C). |
| Quiescent Current | 95µA typical - minimizes standby power loss in always-on systems like remote sensors or network edge devices. |
| MOSFET RDS(on) | 70mΩ (HS) / 25mΩ (LS) - reduces conduction losses and thermal stress in QFN-20 package under full 5A load. |
| Protection Features | Cycle-by-cycle OCP, input UVLO, output UVP, thermal shutdown (155°C), and hiccup-mode recovery - provides autonomous fault containment without external supervision. |
Pinout & Package
RAA211450GSP#HA0 is packaged in a thermally enhanced 20-lead QFN (4mm × 3.5mm, 0.5mm pitch) with exposed thermal pad. The package supports high-power density designs with low θJA = 48.3°C/W (JEDEC board) and θJC = 6.0°C/W, enabling reliable 5A operation without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pins 1,13–19) | Power ground reference for low-side FET source | Must be connected to input bypass capacitors and PCB ground plane with multiple vias to minimize noise and improve thermal dissipation. |
| SW (Pins 2,11) | Phase node connecting HS drain and LS source | Direct connection point for power inductor and bootstrap capacitor; requires tight layout to reduce EMI and voltage ringing. |
| VIN (Pins 3,12,20) | Main input supply and HS FET drain | Accepts 4.5–42V; decoupling must be placed adjacent to PGND pins to suppress high di/dt transients. |
| BST (Pin 4) | Bootstrap supply for HS gate driver | Requires 0.1µF X7R ceramic capacitor between BST and SW to sustain gate drive above VIN during HS conduction. |
| FB (Pin 6) | Inverting input of error amplifier | Connects to resistor divider from VOUT; sets output voltage per VOUT = 0.8V × (1 + RFB1/RFB2) with RFB2 = 20kΩ recommended. |
| EBIAS (Pin 5) | Auxiliary bias input for internal LDO | Enables connection to VOUT (3.3–40V) to reduce power loss vs. VIN-based bias; improves light-load efficiency by >15% in typical 12V→3.3V designs. |
| FS (Pin 9) | Frequency select input | Tie to VCC for 400kHz default; connect resistor to AGND to program 200–800kHz - enables dynamic trade-off between efficiency and transient response. |
| PG (Pin 8) | Open-drain power-good indicator | Asserts high when VOUT is within ±12% of target and SS completes; requires external pull-up (≤3.3V) for system sequencing or fault monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Internal loop compensation | Eliminates need for external compensation network - reduces BOM count by ≥3 components and simplifies design validation. |
| Programmable soft-start (QFN fixed at 0.5ms) | Prevents inrush current during startup - avoids input rail collapse and protects downstream capacitors in high-capacitance loads. |
| PFM + DEM light-load operation | Extends efficiency to <10mA load - achieves >85% efficiency at 1mA for battery-backed or energy-harvesting applications. |
| Integrated EBIAS LDO input | Reduces total power dissipation by routing bias from VOUT instead of VIN - lowers thermal load by up to 300mW in 24V→5V conversion. |
| Thermal shutdown with 20°C hysteresis | Disables switching at 155°C and resumes at 130°C - prevents cumulative thermal damage while enabling automatic recovery after cooling. |
Applications
| Industrial Power Systems | Distributed Power Supplies |
|---|---|
Use Scenario: Centralized 24V/48V bus powering multiple isolated DC/DC modules in factory automation controllers. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator converting 42V max input to 3.3V/5V/12V intermediate rails for I/O, communication, and logic subsystems. Use Value: Wide 4.5–42V input accommodates brownout and surge conditions; 5A output supports multi-rail distribution without parallel stages. |
Use Scenario: Point-of-load (POL) conversion on server motherboard near FPGA or ASIC requiring clean, tightly regulated 1.2V or 1.8V supply. IC Role / Device Role / Timing Role: High-efficiency synchronous buck converter with fast transient response for digital load current steps up to 3A/µs. Use Value: Programmable 200–800kHz switching frequency enables optimal inductor sizing and ripple suppression; internal compensation accelerates layout validation. |
| Telecom Base Station Power | High-Voltage Single-Board Systems |
Use Scenario: Intermediate conversion stage in 48V telecom rectifier feeding RF power amplifiers and digital baseband units. IC Role / Device Role / Timing Role: Robust buck regulator handling wide input variation (36–60V) and providing stable 5V/12V outputs with hiccup-mode short-circuit protection. Use Value: Cycle-by-cycle OCP and thermal shutdown ensure survivability during antenna mismatch or RF front-end faults without system-level shutdown. |
Use Scenario: Compact embedded controller board operating directly from 36V vehicle battery or PoE++ (90W) input. IC Role / Device Role / Timing Role: Primary DC/DC regulator delivering 5A at 3.3V/5V with minimal external components and high thermal reliability in confined enclosures. Use Value: QFN-20 package with thermal pad enables >4W dissipation in 100mm² footprint; EBIAS input reduces heat generation when VOUT is used as bias source. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333GQ-AEC1-P | Automotive-grade AEC-Q100 qualified; 4.5–36V input; 3.5A output; no EBIAS pin; requires external compensation. | Targeted for automotive infotainment and ADAS; lacks 42V rating and VOUT-bias capability for telecom/industrial use cases. | Select only if AEC-Q100 qualification is mandatory and input voltage ≤36V; verify external compensation stability across full load/temperature range. |
| TPS54560BQDDARQ1 | 4.5–60V input; 5A output; adjustable frequency (100–2500kHz); no integrated EBIAS LDO; higher quiescent current (145µA typ.). | Suitable for ultra-wide input applications (e.g., 48V PoE++ or railway 72V); lacks light-load PFM/DEM and internal bias optimization. | Choose when input exceeds 42V or higher frequency flexibility (>800kHz) is required; accept reduced light-load efficiency and added compensation complexity. |
Compared with MPQ4333GQ-AEC1-P and TPS54560BQDDARQ1, RAA211450GSP#HA0 uniquely combines 42V operation, 5A output, internal compensation, EBIAS support, and PFM/DEM modes - making it optimal for industrial and telecom POL where efficiency, thermal headroom, and design simplicity are prioritized over automotive qualification or ultra-high input voltage.
Availability
RAA211450GSP#HA0 is available at Aetrix Electronics and suitable for industrial power systems, distributed power supplies, and telecom base station power requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and load.
Supply support for RAA211450GSP#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 RAA211450GSP#HA0 belongs to Renesas' high-voltage synchronous buck regulator product line, designed specifically for robust, high-efficiency point-of-load conversion in harsh environments with wide input ranges and demanding thermal constraints.
FAQ
What is the maximum input voltage supported by the RAA211450GSP#HA0?
The RAA211450GSP#HA0 supports a maximum input voltage of 42V, with absolute maximum rating at 45V. Operation beyond 42V violates recommended conditions and risks permanent damage. This 42V limit enables compatibility with 36V nominal industrial buses and 48V telecom systems with margin for transients.
Does the RAA211450GSP#HA0 require external compensation components?
No, the RAA211450GSP#HA0 includes internal loop compensation circuitry, eliminating the need for external Type-II or Type-III compensation networks. This reduces BOM cost and PCB area while ensuring stable operation across its full 200–800kHz switching frequency range and load conditions.
How does the EBIAS pin improve efficiency in the RAA211450GSP#HA0?
The EBIAS pin allows connection of an external bias source (e.g., VOUT) to power the internal LDOs, reducing power dissipation compared to VIN-based biasing. In a 24V→5V application, using VOUT (5V) as EBIAS lowers total IC power loss by ~300mW, improving light- and full-load efficiency and easing thermal design.
What protection features are integrated into the RAA211450GSP#HA0?
The RAA211450GSP#HA0 integrates cycle-by-cycle peak and valley current limiting, input UVLO (4.25V rising threshold), output undervoltage (short-circuit) protection with hiccup recovery, thermal shutdown (155°C), and power-good monitoring. These operate autonomously without external circuitry.
Is the RAA211450GSP#HA0 pin-compatible with other members of the RAA2114xx family?
No - the RAA211450GSP#HA0 uses a 20-lead QFN package with specific pin assignments (e.g., dedicated EBIAS, FS, and multiple PGND/SW pins). Other variants like RAA211450GST#HA0 (HTSSOP) have different pin counts, layouts, and terminal functions; direct PCB replacement is not supported.
RAA211450GSP#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):
- 42V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 37.8V
- 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
RAA211450GSP#HA0 FAQ
1.How can I place an order for RAA211450GSP#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA211450GSP#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 RAA211450GSP#HA0 reliable?
The price and inventory of RAA211450GSP#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA211450GSP#HA0 is usually 5 days.
3.What payment methods are accepted for RAA211450GSP#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA211450GSP#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA211450GSP#HA0?
RAA211450GSP#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA211450GSP#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 RAA211450GSP#HA0?
For technical support, including RAA211450GSP#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA211450GSP#HA0 requirements.
6.How does Aetrix verify that RAA211450GSP#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA211450GSP#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 RAA211450GSP#HA0 meets industry standards.
7.What is the process for return or replacement of RAA211450GSP#HA0?
All RAA211450GSP#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA211450GSP#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 RAA211450GSP#HA0 part is unused and in its original packaging.
Return procedure for RAA211450GSP#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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