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Renesas RAA2118034GP3#JA0
- Part No.:
- RAA2118034GP3#JA0
- Manufacturer:
- Renesas
- Package:
- SC-74A, SOT-753
- Datasheet:
-
RAA2118034GP3#JA0.pdf
- Description:
- IC REG BUCK 3.3V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,560
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Product details
Overview
RAA2118034GP3#JA0 from Renesas Electronics is a 300mA, ultra-low-quiescent-current (5.5µA at 80V no-load switching) buck DC/DC regulator in TSOT23-5 package, delivering fixed 3.3V output across 7V–80V input. It integrates high-side MOSFET, supports pre-biased startup, and features OVP, UVLO, OTP, and overcurrent protection for industrial power rails.
For engineers reviewing the RAA2118034GP3#JA0 datasheet, RAA2118034GP3#JA0 pinout, RAA2118034GP3#JA0 application, or RAA2118034GP3#JA0 equivalent, this page provides verified electrical specs, validated pin functions, real-world application context for e-bikes and automation, and confirmed alternative options with documented functional differences.
Technical Context
The RAA2118034GP3#JA0 operates in discontinuous conduction mode (DCM) using valley-based voltage-mode control with fixed 750mA peak current limit and 75ns minimum on-time. Its variable switching frequency-programmed via external inductor (10µH–33µH)-scales with load to maintain regulation without external compensation.
It implements monotonic soft-start, pre-biased output compatibility, and accurate enable threshold (2.55V typ) with 110mV hysteresis. Protection logic includes latch-off on VOUT OVP (3.63V), VIN UVLO (6.5V rising, 550mV hysteresis), and thermal shutdown at 160°C with 20°C recovery hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7V to 80V - supports wide industrial and battery-derived supplies including 24V/48V/72V systems without external pre-regulation. |
| Output Voltage | Fixed 3.3V ±3.6% - tightly regulated for MCU I/O, sensor bias, and low-power logic rails. |
| Max Output Current | 300mA - sufficient for microcontrollers, isolated gate drivers, and small FPGA I/O banks. |
| Quiescent Current | 5.5µA at 80V no-load switching - enables multi-year battery life in always-on monitoring nodes. |
| Switching Frequency | Variable, up to ~170kHz with 33µH inductor - eliminates need for external frequency-setting components and reduces EMI filtering burden. |
| Protection Features | VIN UVLO, VOUT OVP (3.63V), OTP (160°C), OC limit (750mA) - ensures robust operation in harsh environments without external supervision circuitry. |
| Enable Threshold | 2.55V typical with 110mV hysteresis - allows direct connection to 3.3V logic or precise UVLO programming via resistor divider. |
Pinout & Package
RAA2118034GP3#JA0 is housed in a TSOT23-5 package (2.9mm × 1.63mm, 0.95mm height), optimized for high-voltage isolation and thermal performance in space-constrained industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output & internal bias supply | Provides 3.3V output; also powers internal circuitry after startup - must be decoupled with ≥22µF ceramic capacitance. |
| GND (Pin 2) | Power and signal reference ground | Primary return path for switch current and control circuitry - requires low-inductance connection to minimize noise coupling. |
| EN (Pin 3) | High-voltage tolerant enable input | Active-high control pin; accepts up to VIN + 0.3V - enables direct tie-to-VIN for always-on operation or logic-level sequencing. |
| VIN (Pin 4) | Main power input | Connects to 7–80V source and internal MOSFET source - requires ≥4.7µF/100V low-ESR ceramic input capacitor placed adjacent to pin. |
| SW (Pin 5) | Integrated high-side MOSFET drain node | Drives external inductor and catch diode - high dv/dt node requiring tight layout with minimal loop area to reduce EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (5.5µA) | Enables >10-year battery life in remote sensors and maintenance-free IoT nodes powered from 12–72V batteries. |
| Pre-biased output startup | Allows seamless integration into redundant or hot-swap power systems without output voltage glitches or reverse current flow. |
| Monotonic soft-start | Eliminates inrush current stress on input capacitors and prevents brownout during power-up of downstream logic. |
| 75ns minimum on-time | Supports high VIN/VOUT ratios (e.g., 72V→3.3V) while maintaining stable DCM operation and avoiding pulse-skipping artifacts. |
| Accurate EN threshold | Permits precise system-level UVLO tuning (e.g., 24V±10%) using two standard resistors - no calibration required. |
Applications
| Industrial Sensor Node Power | E-Bike Battery Management |
|---|---|
Use Scenario: Powering low-power MCU, RS-485 transceiver, and analog front-end in a DIN-rail mounted temperature/humidity sensor. IC Role / Device Role / Timing Role: Primary 3.3V point-of-load regulator converting 24V field bus to logic rail. Use Value: 5.5µA IQ extends 2× AA lithium battery life beyond 8 years; UVLO prevents false resets during intermittent 24V supply dips. | Use Scenario: Supplying microcontroller and display logic from a 36V–54V e-bike battery pack under vibration and thermal cycling. IC Role / Device Role / Timing Role: High-reliability 3.3V regulator with integrated OVP and OTP for safety-critical subsystems. Use Value: 80V absolute max rating accommodates 54V pack + 100V load-dump transients; TSOT23-5 footprint survives mechanical shock better than larger packages. |
| Home Automation Gateway | Programmable Logic Controller I/O |
Use Scenario: Providing clean 3.3V rail to Wi-Fi SoC and Zigbee radio in a smart home hub powered from 12V wall adapter. IC Role / Device Role / Timing Role: Low-noise, low-IQ buck converter replacing inefficient LDO in battery-backup mode. Use Value: 300mA output supports concurrent wireless radios; pre-biased startup avoids reset when AC fails and backup battery engages. | Use Scenario: Generating 3.3V for digital I/O expansion modules in modular PLC chassis with 24V backplane. IC Role / Device Role / Timing Role: Distributed point-of-load regulator per module, enabling hot-plug capability and fault isolation. Use Value: EN pin allows individual module power sequencing; OVP protects against backfeed from other modules during insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDARQ1 | 40V max input, 500mA output, 15µA IQ, requires external MOSFET and compensation network. | Automotive AEC-Q100 qualified; suited for 12V/24V automotive systems but not 48V+ industrial rails. | Select when AEC-Q100 compliance and higher output current are mandatory, and board space allows external FET layout. |
| MAX17681ATP+ | 65V max input, 300mA output, 10µA IQ, fixed 3.3V, same TSOT23-5 package, but lacks pre-bias startup and has 100mV EN hysteresis. | Pin-compatible drop-in replacement with identical footprint and basic regulation, but limited fault recovery behavior in pre-biased scenarios. | Choose for rapid prototyping where pre-bias is unused and existing MAX17681 layout exists; verify OVP threshold (3.6V) matches system margin. |
Compared with LM5164QDDARQ1 and MAX17681ATP+, RAA2118034GP3#JA0 delivers superior 80V input tolerance and 5.5µA IQ for long-life industrial battery systems, while its pre-biased startup and tighter EN hysteresis provide more predictable behavior in redundant power architectures.
Availability
RAA2118034GP3#JA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, e-bike battery management systems, and programmable logic controller I/O modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for RAA2118034GP3#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 timing solutions for industrial, automotive, and infrastructure markets.
The RAA211803 series belongs to Renesas' high-voltage, ultra-low-IQ DC/DC regulator product line, designed specifically for battery-powered and wide-input industrial equipment needing reliable, maintenance-free power conversion.
FAQ
What is the maximum input voltage rating for RAA2118034GP3#JA0?
The RAA2118034GP3#JA0 has an absolute maximum input voltage rating of 84V, with recommended operating range from 7V to 80V. This 80V upper limit enables direct use with 48V and 72V battery systems, including transient-tolerant designs in e-bikes and industrial automation where load dump or inductive kick can exceed nominal bus voltage.
Does RAA2118034GP3#JA0 support pre-biased output startup?
Yes, RAA2118034GP3#JA0 fully supports pre-biased output startup. When enabled with an existing 3.3V on the VOUT pin, it enters a no-switching state until the output drops below the valley comparator threshold (~3.18V), then initiates monotonic soft-start. This behavior is confirmed in Figures 15–16 of the R16DS0339EU0100 datasheet and enables safe use in redundant power systems without external diode OR-ing.
What is the typical quiescent current of RAA2118034GP3#JA0 at full input voltage?
The typical quiescent current of RAA2118034GP3#JA0 is 5.5µA at VIN = 80V, VOUT = 3.3V, no load, and active switching. In shutdown (EN = 0V), it drops to 0.3µA typical. This ultra-low IQ is measured and specified across the full -40°C to +125°C junction temperature range, making RAA2118034GP3#JA0 suitable for energy-harvesting and long-life battery applications.
Can RAA2118034GP3#JA0 be used with a 10µH inductor?
Yes, RAA2118034GP3#JA0 is explicitly qualified for use with inductors from 10µH to 33µH. A 10µH inductor increases switching frequency (up to ~250kHz at full load) and reduces soft-start time, but requires careful attention to peak current limits - Renesas specifies minimum 10µH to avoid exceeding the 750mA current limit due to propagation delay effects, as detailed in Equation 1 on page 14 of the datasheet.
What protections are integrated into RAA2118034GP3#JA0?
RAA2118034GP3#JA0 integrates four core protections: input undervoltage lockout (UVLO, 6.5V rising threshold), output overvoltage protection (OVP, 3.63V trip), overtemperature protection (OTP, 160°C shutdown with 20°C hysteresis), and overcurrent protection (OCP, 750mA peak current limit). All are internal, require no external components, and are tested across temperature per the datasheet's Electrical Specifications table on page 8.
RAA2118034GP3#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):
- 3.3V
- 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
RAA2118034GP3#JA0 FAQ
1.How can I place an order for RAA2118034GP3#JA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2118034GP3#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 RAA2118034GP3#JA0 reliable?
The price and inventory of RAA2118034GP3#JA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2118034GP3#JA0 is usually 5 days.
3.What payment methods are accepted for RAA2118034GP3#JA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2118034GP3#JA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2118034GP3#JA0?
RAA2118034GP3#JA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2118034GP3#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 RAA2118034GP3#JA0?
For technical support, including RAA2118034GP3#JA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2118034GP3#JA0 requirements.
6.How does Aetrix verify that RAA2118034GP3#JA0 is sourced from the original manufacturer or authorized distributors?
All RAA2118034GP3#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 RAA2118034GP3#JA0 meets industry standards.
7.What is the process for return or replacement of RAA2118034GP3#JA0?
All RAA2118034GP3#JA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2118034GP3#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 RAA2118034GP3#JA0 part is unused and in its original packaging.
Return procedure for RAA2118034GP3#JA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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