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Renesas RAA2118054GP3#JA0
- Part No.:
- RAA2118054GP3#JA0
- Manufacturer:
- Renesas
- Package:
- SC-74A, SOT-753
- Datasheet:
-
RAA2118054GP3#JA0.pdf
- Description:
- IC REG BUCK 5V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,732
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Product details
Overview
RAA2118054GP3#JA0 from Renesas Electronics is a 5V fixed-output, ultra-low quiescent current (5.5µA at 80V no-load switching) buck regulator in TSOT23-5 package, supporting 7–80V input and delivering up to 300mA output current. It integrates MOSFET, provides pre-biased monotonic startup, and is used in industrial I/O supplies and e-bike auxiliary power rails.
For engineers reviewing the RAA2118054GP3#JA0 datasheet, RAA2118054GP3#JA0 pinout, RAA2118054GP3#JA0 application, or RAA2118054GP3#JA0 equivalent, key selection criteria include its 75ns minimum on-time, variable frequency operation via external inductor (22µH typical), 5.5µA IQ at 80V, 5V ±3.5% output accuracy, and integrated protections: VIN UVLO (6.5V typ), OVP (5.5V), OTP (160°C), and overcurrent limit (750mA).
Technical Context
The RAA2118054GP3#JA0 operates in discontinuous conduction mode (DCM) using valley-based voltage-mode control with fixed peak current limiting (750mA typical). Its switching frequency varies with load, inductor value (22µH for ~230kHz max), and input voltage - enabling optimization for efficiency vs. EMI trade-offs.
It features accurate EN threshold (2.55V typ, 110mV hysteresis), programmable VIN UVLO via resistor divider on EN, and seamless pre-biased startup without output glitches. Protection logic prioritizes faults: UVLO and OTP force full POR reset; OVP and OCP trigger immediate shutdown with automatic recovery after fault clearance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 80V - supports wide industrial and automotive battery-derived rails without external pre-regulation. |
| Output Voltage | Fixed 5.0V ±3.5% - eliminates external feedback resistors; suitable for powering microcontrollers, sensors, and interface ICs. |
| Max Output Current | 300mA - sufficient for low-power embedded subsystems, I/O expanders, and sensor hubs. |
| Quiescent Current | 5.5µA at 80V, no load, switching - enables multi-year battery life in always-on industrial monitoring nodes. |
| Min On-Time | 75ns - allows stable regulation even at high VIN/VOUT ratios (e.g., 80V→5V), preventing pulse-skipping instability. |
| UVLO Threshold | 6.5V (rising), 5.95V (falling) - ensures reliable start-up from degraded 12V/24V systems and prevents brownout oscillation. |
| OVP Threshold | 5.5V - clamps output during feedback failure or transient overvoltage, protecting downstream 5V logic. |
Pinout & Package
RAA2118054GP3#JA0 is housed in a TSOT23-5 package (2.9mm × 1.63mm, 0.95mm height), optimized for space-constrained industrial PCBs and thermally efficient with θJA = 85°C/W on standard evaluation board layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output & internal bias supply | Provides 5V output; also powers internal circuitry post-startup - requires local ceramic decoupling (≥22µF). |
| GND (Pin 2) | Power and signal reference ground | Must be connected to low-impedance ground plane; shared return path for SW and VOUT currents. |
| EN (Pin 3) | Enable control input | Logic-compatible (2.55V threshold); can be tied to VIN for always-on or driven by MCU GPIO; 0V disables regulator with 0.3µA shutdown current. |
| VIN (Pin 4) | Main power input | Accepts 7–80V; connects to source of internal MOSFET - requires ≥4.7µF/100V low-ESR ceramic input capacitor. |
| SW (Pin 5) | Switch node | Drain of internal high-side MOSFET; connects to inductor and Schottky diode - critical for EMI layout; minimize trace area. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 5.5µA at 80V no-load switching enables >10-year battery life in remote sensors and IoT edge nodes. |
| Pre-biased monotonic startup | Starts cleanly into existing 5V rail without reverse current or output overshoot - essential for redundant power systems. |
| Programmable UVLO via EN | Resistor divider on EN sets custom input turn-on threshold (e.g., 18V system lockout), eliminating external supervisor ICs. |
| Integrated protection suite | Single-chip solution includes UVLO, OVP (5.5V), OTP (160°C), and cycle-by-cycle OCP (750mA) - reduces BOM count and failure modes. |
| Variable frequency DCM control | Frequency scales with load (e.g., 230kHz max at 300mA with 22µH) - simplifies EMI filter design versus fixed-frequency alternatives. |
Applications
| Industrial I/O Power | E-Bike Auxiliary Supply |
|---|---|
Use Scenario: Powering isolated digital I/O modules in PLC backplanes with 24V or 48V field bus inputs. IC Role / Device Role / Timing Role: Primary 5V DC/DC converter supplying logic-level interface ICs, optocouplers, and ADC references. Use Value: 7–80V input range accommodates wide industrial bus tolerances; 5.5µA IQ extends uptime in unpowered standby states. | Use Scenario: Generating stable 5V rail from e-bike 36V/48V battery for display controllers, BLE modules, and lighting drivers. IC Role / Device Role / Timing Role: Compact, thermally robust step-down regulator mounted near battery connector or display assembly. Use Value: TSOT23-5 footprint minimizes PCB area; 300mA output supports multiple peripherals; OVP protects against regenerative braking transients. |
| Home Automation Hub | Power Tool Control Board |
Use Scenario: Local 5V supply for Zigbee/Z-Wave SoCs and sensor fusion processors in smart home gateways. IC Role / Device Role / Timing Role: Always-on auxiliary regulator maintaining real-time clock, wireless stack, and wake-on-LAN functionality. Use Value: 4.5µA no-switching IQ enables multi-year coin-cell backup; pre-biased startup ensures clean boot after main power restoration. | Use Scenario: Providing 5V logic power on brushless motor control boards operating from 18–60V Li-ion packs. IC Role / Device Role / Timing Role: Secondary regulator feeding MCU, gate drivers, and Hall-effect sensors in harsh, high-vibration environments. Use Value: -40°C to +125°C junction rating ensures reliability under motor heat soak; OTP (160°C) prevents thermal runaway during stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDARQ1 | 4.5–65V input, 500mA, 13µA IQ, requires external MOSFETs and feedback resistors | Higher current, automotive AEC-Q100 qualified, but larger solution size and higher IQ | Choose when >300mA output or automotive qualification is mandatory; avoid if board space or ultra-low IQ is critical. |
| MAX17690ATP+T | 4.5–60V input, 300mA, 12µA IQ, fixed 5V, same TSOT23-5 package | Nearly identical specs but lacks pre-biased startup and has lower OVP threshold (5.25V) | Consider only if pre-bias operation is unnecessary and tighter OVP margin is acceptable; verify thermal performance at 80V input. |
Compared with LM5164QDDARQ1 and MAX17690ATP+T, RAA2118054GP3#JA0 delivers the lowest quiescent current (5.5µA), unique pre-biased monotonic startup, and highest input voltage rating (80V), making it optimal for long-life, high-VIN industrial and e-mobility applications where minimal solution size and zero-output-glitch behavior are required.
Availability
RAA2118054GP3#JA0 is available at Aetrix Electronics and suitable for industrial I/O supplies, e-bike auxiliary power, and home automation hubs requiring stable component supply across extended product lifecycles.
Supply support for RAA2118054GP3#JA0 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, and connectivity solutions for industrial, automotive, and IoT markets.
The RAA21180x family is designed for ultra-low-power, high-input-voltage DC/DC conversion in space-constrained industrial and mobility applications - emphasizing simplicity, reliability, and minimal external component count.
FAQ
What is the maximum input voltage supported by the RAA2118054GP3#JA0?
The RAA2118054GP3#JA0 supports a maximum input voltage of 80V, with absolute maximum rating at 84V. This enables direct connection to 48V and 60V industrial battery systems and telecom rectified rails without external pre-regulation. Operation above 80V is not recommended per datasheet specifications.
Does the RAA2118054GP3#JA0 require external feedback resistors to set the output voltage?
No, the RAA2118054GP3#JA0 has an internally trimmed fixed 5.0V output, eliminating the need for external feedback resistors. The output voltage is specified as 4.75V to 5.15V at 12V input and no load, ensuring compatibility with standard 5V logic interfaces without calibration.
How does the RAA2118054GP3#JA0 handle startup into a pre-biased output?
The RAA2118054GP3#JA0 supports monotonic, glitch-free startup into a pre-biased 5V rail - it detects existing output voltage and suppresses switching until the rail drops below the valley comparator threshold. This feature is confirmed in Figures 15–16 of the datasheet and avoids reverse current or output collapse in redundant power systems.
What is the typical switching frequency range of the RAA2118054GP3#JA0 under full load?
With a 22µH inductor, the RAA2118054GP3#JA0 operates at up to ~230kHz under 300mA load at 24V input (Figure 46). Frequency decreases with higher input voltage or lighter loads - e.g., ~120kHz at 80V/300mA - enabling natural EMI spread-spectrum behavior without external control.
Can the enable pin of the RAA2118054GP3#JA0 be directly connected to the input voltage rail?
Yes, the EN pin of the RAA2118054GP3#JA0 is high-voltage tolerant (rated to VIN + 0.3V) and can be directly tied to VIN for always-on operation. Its 2.55V typical enable threshold and 110mV hysteresis ensure robust noise immunity, and leakage current remains below 0.1µA at 80V, preserving system efficiency.
RAA2118054GP3#JA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7V
- Voltage - Input (Max):
- 80V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
RAA2118054GP3#JA0 FAQ
1.How can I place an order for RAA2118054GP3#JA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2118054GP3#JA0 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 RAA2118054GP3#JA0 reliable?
The price and inventory of RAA2118054GP3#JA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2118054GP3#JA0 is usually 5 days.
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RAA2118054GP3#JA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2118054GP3#JA0 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 RAA2118054GP3#JA0?
For technical support, including RAA2118054GP3#JA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2118054GP3#JA0 requirements.
6.How does Aetrix verify that RAA2118054GP3#JA0 is sourced from the original manufacturer or authorized distributors?
All RAA2118054GP3#JA0 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 RAA2118054GP3#JA0 meets industry standards.
7.What is the process for return or replacement of RAA2118054GP3#JA0?
All RAA2118054GP3#JA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2118054GP3#JA0, 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 RAA2118054GP3#JA0 part is unused and in its original packaging.
Return procedure for RAA2118054GP3#JA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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