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Renesas RAA211820GNP#HA0
- Part No.:
- RAA211820GNP#HA0
- Manufacturer:
- Renesas
- Package:
- 20-PowerVFQFN
- Datasheet:
-
RAA211820GNP#HA0.pdf
- Description:
- IC REG BUCK ADJ 2A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,570
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Product details
Overview
RAA211820GNP#HA0 from Renesas Electronics is a 4.5V–75V input, 2A 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 155mΩ/80mΩ MOSFETs. It delivers ±0.5% load regulation at 25°C and supports industrial power systems requiring high-voltage input and stable low-noise output.
For engineers reviewing the RAA211820GNP#HA0 datasheet, RAA211820GNP#HA0 pinout, RAA211820GNP#HA0 application, or RAA211820GNP#HA0 equivalent, key selection criteria include its wide VIN range, internal soft-start timing, EBIAS biasing capability, PFM/DEM light-load efficiency mode, and thermal shutdown with 150°C trip point.
Technical Context
The RAA211820GNP#HA0 employs peak-current mode control with slope compensation and an internal transconductance error amplifier referenced to 0.8V. Its COMP signal compares sensed high-side current plus slope against the error amplifier output, enabling stable CCM operation across 200–800kHz.
It supports three operational modes: fixed-frequency PWM (CCM), discontinuous conduction mode (DCM) for light-load efficiency, and hiccup-mode protection during sustained overcurrent or output short-circuit. The device integrates cycle-by-cycle peak/valley current limiting, input UVLO (4.25V rising), and output undervoltage detection at 0.4V FB threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 75V - enables direct integration into 24V, 48V, and 72V industrial bus architectures without pre-regulation. |
| Output Current | Up to 2A continuous - sustains full-rated load under worst-case thermal conditions with QFN package θJA = 48.3°C/W. |
| Switching Frequency | Programmable 200–800kHz via FS resistor - allows optimization of inductor size vs. efficiency trade-off; default 400kHz. |
| Feedback Reference | 0.8V ±0.004V (25°C), ±0.008V (–40°C to 125°C) - ensures precise output voltage setting across temperature with minimal drift. |
| Quiescent Current | 95µA typical - minimizes standby power loss in always-on systems such as remote sensors or telecom backup supplies. |
| MOSFET rDS(on) | 155mΩ (HS) / 80mΩ (LS) - reduces conduction losses and improves full-load efficiency, especially at high VIN/VOUT ratios. |
| Soft-Start Time | Fixed 0.5ms internal - prevents inrush current during startup without external capacitor; eliminates need for SS pin routing. |
Pinout & Package
RAA211820GNP#HA0 is housed in a thermally enhanced 20-lead QFN package (4mm × 3.5mm, 0.5mm pitch) with exposed thermal pad connected to AGND. The bottom thermal pad requires ≥3 thermal vias to PCB ground plane per JEDEC standard layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,13–19 (PGND) | Power Ground | Source connection for internal low-side FET; must be tied directly to input bypass capacitor ground return path. |
| 2,12 (SW) | Switch Node | Phase node connecting internal HS/LS FETs; routes to inductor and bootstrap capacitor; critical for EMI control. |
| 3,20 (VIN) | Main Input Supply | Drain of internal high-side FET and input to internal LDO; requires local 10µF+ ceramic decoupling to PGND. |
| 4 (BST) | Bootstrap Supply | Provides gate drive voltage for high-side FET; connects via 0.1µF X7R ceramic capacitor to SW pin. |
| 5 (EBIAS) | Auxiliary Bias Input | Accepts external bias (3.3–40V); enables higher efficiency when VOUT is used as bias source instead of VIN. |
| 6 (FB) | Feedback Input | Inverting input of error amplifier; sets output voltage via resistor divider (VOUT = 0.8V × (1 + RFB1/RFB2)). |
| 7 (AGND) | Analog Ground | Reference for feedback, oscillator, and error amplifier; must be star-connected to PGND near FB and AGND pins. |
| 8 (PG) | Power-Good Output | Open-drain indicator asserted when VOUT is within ±12% of target; requires external pull-up (≤3.3V recommended). |
| 9 (FS) | Frequency Set | Connects to AGND via resistor to program fSW from 200–800kHz; short to VCC for default 400kHz. |
| 10 (VCC) | Bias Regulator Output | Internal LDO output (3.3V); powers gate drivers and logic; requires 1µF ceramic capacitor to AGND. |
| 11 (EN) | Enable Input | High-voltage tolerant (76V max); active-high; 1.3V threshold enables direct connection to VIN with 1MΩ pulldown. |
| PAD (Thermal) | Thermal Interface | Exposed copper pad on underside; must be soldered to PCB ground plane with ≥3 thermal vias for thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Compensation | Eliminates external Type-II/III compensation network, reducing BOM count and layout sensitivity across 200–800kHz. |
| PFM + DEM Light-Load Mode | Extends battery life or reduces no-load power in always-on systems by dynamically lowering switching frequency below 200kHz. |
| Integrated EBIAS LDO | Allows use of VOUT as bias source, cutting quiescent power dissipation by up to 40% compared to VIN-only biasing. |
| Programmable Soft-Start (QFN variant) | Fixed 0.5ms internal soft-start ensures controlled ramp-up without external capacitor-reduces design complexity and board space. |
| Robust Protection Suite | Cycle-by-cycle OCP (3.3A HS / 2.4A LS), input UVLO (4.25V), output UVP (0.4V FB), thermal shutdown (150°C), and hiccup recovery. |
Applications
| Industrial Power Systems | Distributed Point-of-Load Supplies |
|---|---|
Use Scenario: Powering PLC I/O modules, motor drives, and fieldbus interfaces from 24V/48V DC rails in factory automation cabinets. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 3.3V/5V/12V to microcontrollers, ADCs, and isolated gate drivers. Use Value: Wide 4.5–75V input accommodates brownout and surge conditions; 2A output supports multi-rail loads without derating. |
Use Scenario: Local regulation on high-density server blades or telecom line cards where space and thermal management are constrained. IC Role / Device Role / Timing Role: Secondary buck converter stepping down intermediate 12V/24V bus to processor core or memory supply voltages. Use Value: Internal compensation and QFN thermal pad enable compact, reliable layout; PFM mode cuts idle power in standby states. |
| Telecom Base Station Power | High-Voltage Single-Board Systems |
Use Scenario: Providing bias to RF front-end amplifiers and fronthaul interface ICs in 4G/5G macro base stations operating from -48V DC. IC Role / Device Role / Timing Role: Isolated or non-isolated buck stage converting -48V (with polarity inversion) or +48V to 5V/3.3V analog/digital rails. Use Value: 75V absolute max rating supports transient surges up to 76V; robust ESD (1.5kV HBM) withstands harsh telecom environments. |
Use Scenario: Powering embedded vision systems, LiDAR controllers, or EV battery management units with single-board 60V+ input architecture. IC Role / Device Role / Timing Role: Main system regulator converting high-voltage battery or rectified AC to MCU, sensor, and communication subsystem rails. Use Value: Integrated 155mΩ/80mΩ MOSFETs reduce conduction loss at high VIN; thermal shutdown protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDARQ1 | 4.5–65V input, 1A output, external compensation, no EBIAS pin, 1.5MHz max fSW | Limited to lower current and narrower VIN range; lacks auxiliary bias option for efficiency optimization | Preferred for cost-sensitive automotive applications where 1A suffices and 65V max VIN is acceptable |
| MPQ4420AGL-A | 3.3–60V input, 2A output, internal compensation, no programmable fSW, no EBIAS, 500kHz fixed | Fixed frequency only; no light-load PFM/DEM; no external bias option; lower VIN upper limit than RAA211820GNP#HA0 | Suitable for simpler designs where 60V VIN ceiling and absence of EBIAS are acceptable trade-offs for footprint reduction |
Compared with LM5164QDDARQ1 and MPQ4420AGL-A, the RAA211820GNP#HA0 offers broader input range (up to 75V), integrated EBIAS for efficiency tuning, and programmable frequency for optimal EMI/efficiency balance-making it superior for high-reliability industrial and telecom systems demanding flexibility and robustness.
Availability
RAA211820GNP#HA0 is available at Aetrix Electronics and suitable for industrial power systems, distributed point-of-load supplies, and telecom base station power requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for RAA211820GNP#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 RAA211820GNP#HA0 belongs to Renesas' high-voltage DC/DC regulator product line, designed specifically for rugged industrial and telecom power conversion where wide input range, integrated protection, and thermal resilience are mandatory.
FAQ
What is the maximum input voltage rating for the RAA211820GNP#HA0?
The RAA211820GNP#HA0 has an absolute maximum input voltage rating of 76V, with recommended operation up to 75V. This allows safe deployment in 48V and 60V industrial systems subject to load-dump transients. Operation beyond 75V risks permanent damage and voids warranty compliance per datasheet Section 3.1.
Does the RAA211820GNP#HA0 require external compensation components?
No, the RAA211820GNP#HA0 features fully internal loop compensation, eliminating the need for external Type-II or Type-III networks. This simplifies layout, reduces BOM count, and ensures stable operation across its entire 200–800kHz switching frequency range without tuning.
How does the EBIAS pin improve efficiency in the RAA211820GNP#HA0?
The EBIAS pin allows the RAA211820GNP#HA0 to use VOUT (or another 3.3–40V rail) as its internal bias source instead of VIN. When VOUT is lower than VIN-such as in high-step-down applications-this reduces power dissipation in the internal LDO, improving light- and full-load efficiency by up to 40%.
What protection features are integrated into the RAA211820GNP#HA0?
The RAA211820GNP#HA0 integrates cycle-by-cycle peak and valley current limiting (3.3A HS / 2.4A LS), input UVLO (4.25V rising), output undervoltage protection (0.4V FB threshold), thermal shutdown (150°C), and hiccup-mode recovery. All protections are hardware-based and require no configuration.
Can the RAA211820GNP#HA0 operate with a pre-biased output?
Yes, the RAA211820GNP#HA0 supports pre-biased start-up. When voltage is present on VOUT before EN assertion, the device inhibits switching until the internal soft-start voltage exceeds the FB pin voltage, preventing reverse current flow and ensuring controlled regulation ramp-up.
RAA211820GNP#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):
- 75V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 67.5V
- Current - Output:
- 2A
- 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)
RAA211820GNP#HA0 FAQ
1.How can I place an order for RAA211820GNP#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA211820GNP#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 RAA211820GNP#HA0 reliable?
The price and inventory of RAA211820GNP#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA211820GNP#HA0 is usually 5 days.
3.What payment methods are accepted for RAA211820GNP#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA211820GNP#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA211820GNP#HA0?
RAA211820GNP#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA211820GNP#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 RAA211820GNP#HA0?
For technical support, including RAA211820GNP#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA211820GNP#HA0 requirements.
6.How does Aetrix verify that RAA211820GNP#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA211820GNP#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 RAA211820GNP#HA0 meets industry standards.
7.What is the process for return or replacement of RAA211820GNP#HA0?
All RAA211820GNP#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA211820GNP#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 RAA211820GNP#HA0 part is unused and in its original packaging.
Return procedure for RAA211820GNP#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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