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Renesas RTKA211805DE0000BU
- Part No.:
- RTKA211805DE0000BU
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
RTKA211805DE0000BU.pdf
- Description:
- EVAL BOARD FOR RAA211805
- Quantity:
- Payment:
- Shipping:
Inventory:1,267
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Product details
Overview
RTKA211805DE0000BU from Renesas Electronics is an evaluation board designed to characterize and prototype with the RAA211805 5V, 300mA buck regulator. It supports 7–80V input, delivers regulated 5V output at up to 300mA, features ultra-low 5.5µA quiescent current at 80V (switching), and includes test points for VSW, EN, and GND to facilitate dynamic performance analysis in high-voltage industrial power supply validation.
For engineers reviewing the RTKA211805DE0000BU datasheet, RTKA211805DE0000BU pinout, RTKA211805DE0000BU application, or RTKA211805DE0000BU equivalent, this board enables rapid functional verification of wide-input buck regulation, soft-start behavior, load transient response, and protection features including overcurrent, UVLO, OTP, and OVP under real-world conditions.
Technical Context
The RTKA211805DE0000BU implements a fixed-frequency–capable, variable-frequency buck topology centered on the RAA211805 IC in TSOT23-5 package. It uses a 22µH external inductor and dual 22µF output capacitors to achieve stable 5V regulation across 7–80V input while maintaining ≤5.5µA IQ in active no-load mode and enabling monotonic pre-bias start-up.
Board-level design integrates four critical external components - input capacitor (4.7µF/100V), output capacitors (2×22µF/16V), inductor (22µH), and Schottky diode (BAS100CS) - with optimized 2-layer PCB layout, minimal power loop area, and thermal vias for thermal management at full 300mA load and 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 80V DC - enables direct connection to automotive battery, industrial 24/48V rails, and PoE++ or solar MPPT front-ends without pre-regulation. |
| Output Voltage | Fixed 5V ±1% - provides stable logic supply for microcontrollers, sensors, and interface ICs without external feedback resistors. |
| Max Output Current | 300mA continuous - sufficient to power low-power MCU subsystems, isolated gate drivers, or sensor signal chains. |
| Quiescent Current | 5.5µA at 80V (switching), 4.5µA at 80V (no switching) - ensures >10-year battery life in always-on monitoring applications. |
| Switching Frequency | Variable, ~100–180kHz range (load- and VIN-dependent) - avoids EMI-sensitive bands and simplifies EMI filter design with single inductor. |
| Operating Temperature | −40°C to +125°C - validated for under-hood automotive, industrial motor control, and outdoor telecom equipment environments. |
| Protection Features | OC limit (750mA peak), UVLO (6.5V typ), OTP (165°C), OVP (6.2V) - eliminates need for external fault-handling circuitry in safety-critical designs. |
Availability
RTKA211805DE0000BU is available at Aetrix Electronics and suitable for industrial power supply validation, automotive subsystem prototyping, and high-voltage IoT edge node development requiring stable component supply and fast time-to-test.
Supply support for RTKA211805DE0000BU 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 solutions for automotive, industrial, infrastructure, and IoT applications with emphasis on energy efficiency and functional safety.
The RTKA211805DE0000BU belongs to Renesas' high-voltage DC-DC evaluation platform family, engineered to accelerate adoption of ultra-low-IQ buck regulators like the RAA211805 in space-constrained, battery-backed, and wide-input industrial systems.
FAQ
What is the primary function of the RTKA211805DE0000BU evaluation board?
The RTKA211805DE0000BU evaluation board is a dedicated hardware platform for evaluating the RAA211805 5V, 300mA buck regulator. It enables engineers to verify key performance metrics-including startup behavior, load/line regulation, efficiency, quiescent current, and protection responses-under real operating conditions from 7V to 80V input. The board includes test points, jumpers, and optimized layout to support rapid prototyping and measurement of the RTKA211805DE0000BU's target application behavior.
Does the RTKA211805DE0000BU support adjustable output voltage?
No, the RTKA211805DE0000BU evaluation board is configured exclusively for fixed 5V output, matching the internal feedback setting of the RAA211805 IC it hosts. The RAA211805 itself does not support external resistor-based output voltage adjustment; its 5V regulation is factory-trimmed and non-programmable. Any requirement for alternate output voltages would necessitate selecting a different regulator IC-not modifying the RTKA211805DE0000BU board.
What external components are required to operate the RTKA211805DE0000BU?
The RTKA211805DE0000BU is fully populated and requires no additional external components for basic operation. It integrates all four essential external parts: a 4.7µF/100V input capacitor, two 22µF/16V output capacitors, a 22µH power inductor, and a BAS100CS Schottky diode. Users only need a DC power supply (7–80V, ≥350mA), electronic load (for testing), and oscilloscope probes to begin evaluation of the RTKA211805DE0000BU.
Can the RTKA211805DE0000BU be used to evaluate soft-start behavior?
Yes, the RTKA211805DE0000BU supports comprehensive soft-start evaluation via both VIN ramp-up and EN pin control. Test point TP3 provides direct access to the EN signal, allowing users to observe monotonic, pre-bias–capable startup waveforms. Measured soft-start times are ~360µs (no load) and ~590µs (300mA load) at 24V input - values documented in the official R16UZ0087EU0101 manual for the RTKA211805DE0000BU board.
Is the RTKA211805DE0000BU compatible with other Renesas buck regulators?
No, the RTKA211805DE0000BU is specifically designed and optimized for the RAA211805 IC in TSOT23-5 package. Its schematic, layout, component values (e.g., 22µH inductor, 4.7µF CIN), and protection thresholds are tailored to that device's electrical characteristics and pinout. It is not mechanically or electrically compatible with other Renesas buck regulators such as the RAA211804 or RAA211806, which differ in output voltage, current rating, or package.
RTKA211805DE0000BU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 5V
- Voltage - Input:
- 300mA
- Regulator Topology:
- 7V ~ 80V
- Frequency - Switching:
- Buck
- Contents:
- -
- Utilized IC / Part:
- Board(s)
- Power - Output:
- RAA211805
RTKA211805DE0000BU FAQ
1.How can I place an order for RTKA211805DE0000BU through Aetrix?
Please submit a Request for Quotation (RFQ) for RTKA211805DE0000BU 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 RTKA211805DE0000BU reliable?
The price and inventory of RTKA211805DE0000BU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RTKA211805DE0000BU is usually 5 days.
3.What payment methods are accepted for RTKA211805DE0000BU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RTKA211805DE0000BU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RTKA211805DE0000BU?
RTKA211805DE0000BU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RTKA211805DE0000BU 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 RTKA211805DE0000BU?
For technical support, including RTKA211805DE0000BU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RTKA211805DE0000BU requirements.
6.How does Aetrix verify that RTKA211805DE0000BU is sourced from the original manufacturer or authorized distributors?
All RTKA211805DE0000BU 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 RTKA211805DE0000BU meets industry standards.
7.What is the process for return or replacement of RTKA211805DE0000BU?
All RTKA211805DE0000BU units undergo pre-shipment inspection (PSI). If there is an issue with RTKA211805DE0000BU, 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 RTKA211805DE0000BU part is unused and in its original packaging.
Return procedure for RTKA211805DE0000BU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RTKA211805DE0000BU Tags
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DFR0571
DFRobot
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DFR0379
DFRobot
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DFR0205
DFRobot
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1385
Adafruit Industries LLC
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COM-15208
SparkFun Electronics
-
1944
Adafruit Industries LLC
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2465
Adafruit Industries LLC
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DC2468A
Analog Devices Inc.
-
DC2841A
Analog Devices Inc.
-
TPS552892EVM-111
Texas Instruments
-
TPS55289EVM-093
Texas Instruments
-
EPC9158
EPC
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