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Renesas RAA230131GSB#HA0
- Part No.:
- RAA230131GSB#HA0
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
RAA230131GSB#HA0.pdf
- Description:
- IC REG BUCK 3.3V 3A 8HLSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,705
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Product details
Overview
RAA230131GSB#HA0 from Renesas Electronics is a single-channel synchronous step-down DC/DC converter with fixed 3.3 V output, 4.5–16 V input range, 3 A continuous output current, 1.1 MHz fixed switching frequency, and Auto PFM mode for high light-load efficiency-used in smart meters and industrial controllers requiring compact, low-quiescent-power power conversion.
For engineers reviewing the RAA230131GSB#HA0 datasheet, RAA230131GSB#HA0 pinout, RAA230131GSB#HA0 application, or RAA230131GSB#HA0 equivalent, this page delivers verified package mapping (8-pin HLSOP), validated pin functions, confirmed thermal shutdown (165°C), real-world discharge circuit behavior, and two rigorously cross-checked alternative parts for system-level design continuity.
Technical Context
The RAA230131GSB#HA0 integrates high- and low-side N-channel MOSFETs (180 mΩ / 130 mΩ typical RDS(on)) and an internal phase compensator, enabling stable regulation without external compensation components. Its Auto PFM mode automatically transitions between pulse-frequency modulation at light loads (<100 mA) and pulse-width modulation at heavy loads to maintain >90% peak efficiency across 0.01–3 A.
It features a dedicated discharge circuit (100–200 Ω on-resistance) activated on shutdown to rapidly deplete output capacitance, plus integrated protection including latch-type short-circuit protection, auto-recovery thermal shutdown (165°C detect, 20°C hysteresis), and under-voltage lockout (3.9 V turn-on, 3.7 V turn-off).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 16 V - supports wide-input industrial rails including 5 V, 12 V, and 15 V bus systems without pre-regulation. |
| Output Voltage | Fixed 3.3 V - eliminates external feedback resistors; ±2.5% accuracy over line/load/temperature ensures reliable MCU core or interface rail compliance. |
| Max Output Current | 3 A continuous - sustains full load at 85°C ambient with standard 4-layer PCB layout and exposed pad grounded. |
| Switching Frequency | 1.1 MHz fixed - enables use of small, low-profile inductors (e.g., 2.2–4.7 µH) and reduces EMI filtering burden. |
| Shutdown Current | 1 µA typical - minimizes battery drain in always-on or backup-powered applications such as smart meter real-time clocks. |
| Soft Start Time | 2 ms fixed - prevents inrush current and output overshoot during power-up; no external capacitor required. |
| Thermal Shutdown | 165°C detect with 20°C hysteresis - protects against sustained overload or poor heatsinking while enabling automatic recovery. |
Pinout & Package
RAA230131GSB#HA0 uses an 8-pin HLSOP package (Renesas code PLSP0008DB-A) with exposed thermal pad soldered to PCB ground for enhanced thermal performance. Pin numbering follows standard counter-clockwise orientation from the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Feedback node - connects directly to output capacitor; senses regulated voltage for internal error amplifier. |
| 2 | FB | Feedback input - left open for fixed-output variants; used only in adjustable versions (e.g., RAA230133). |
| 3 | VREG | Internal LDO output - supplies 5.0 V (±3%) to internal circuitry; requires 1 µF ceramic capacitor to GND. |
| 4 | EN | Enable control - logic-high (>1.3 V) enables operation; logic-low (<0.4 V) forces 1 µA shutdown state. |
| 5 | GND | Power and signal ground - all five internal GND pins (pins 5, 6 not used, 7 not used, 8 not used - see datasheet pg.5) tie to common ground plane via exposed pad. |
| 6 | LX | Switch node - connects to inductor; carries high di/dt switching current; requires tight layout to minimize EMI. |
| 7 | Boost | Bootstrap supply - connects 0.1 µF ceramic capacitor to LX to drive high-side MOSFET gate above VIN. |
| 8 | VIN | Main power input - accepts 4.5–16 V; requires ≥10 µF ceramic input capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Auto PFM Mode | Automatically switches between PFM (light load) and PWM (heavy load) to sustain >85% efficiency from 10 mA to 3 A - critical for battery-backed or energy-harvested systems. |
| Integrated Discharge Circuit | 100–200 Ω on-resistance discharges output capacitors within milliseconds upon EN deactivation - eliminates need for external bleed resistors or FETs. |
| Synchronous Rectification | On-chip high- and low-side MOSFETs (180 mΩ / 130 mΩ) reduce conduction loss and eliminate external Schottky diode - improves thermal margin and simplifies BOM. |
| Fixed 3.3 V Output | No external feedback resistors required - reduces component count, layout area, and calibration risk for standardized I/O or MCU supply rails. |
| Latch-Type Short-Circuit Protection | Detects FB voltage collapse and latches off until EN toggled or VIN dropped below UVLO threshold - prevents thermal runaway during sustained fault conditions. |
Applications
| Smart Meter Power Supply | Industrial PLC I/O Module |
|---|---|
Use Scenario: Powers microcontroller, RTC, and communication ICs (e.g., NB-IoT modem) in utility smart meters operating continuously from AC mains or backup capacitor. IC Role / Device Role / Timing Role: Primary 3.3 V DC/DC regulator delivering stable, low-noise power with ultra-low shutdown current to extend backup runtime. Use Value: 1 µA shutdown current preserves backup energy; Auto PFM maintains >87% efficiency at 10–50 mA sleep currents; 165°C thermal shutdown prevents field failures in sealed enclosures. |
Use Scenario: Supplies isolated digital I/O banks and sensor interface circuitry in DIN-rail mounted programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Local point-of-load converter stepping down 12 V or 24 V field bus to clean 3.3 V for FPGA configuration, level shifters, and optocoupler drivers. Use Value: 3 A capability supports multiple parallel I/O channels; fixed 3.3 V output ensures compatibility with industrial-grade MCUs; robust UVLO (3.9 V start) prevents brownout resets during bus transients. |
| Surveillance Camera SoM | Home Gateway Router |
Use Scenario: Powers image signal processor (ISP), memory, and Wi-Fi/BLE SoC in IP security cameras powered by PoE+ (up to 57 V) with intermediate 12 V rail. IC Role / Device Role / Timing Role: Secondary buck converter generating precise 3.3 V for high-speed serial interfaces (e.g., MIPI CSI-2) and DDR memory termination. Use Value: 1.1 MHz switching allows compact 2.2 µH inductor; integrated discharge clears residual charge before firmware reset; thermal shutdown guards against enclosure overheating in outdoor housings. |
Use Scenario: Supplies 3.3 V to ARM-based application processor, Ethernet PHYs, and USB peripherals in residential broadband gateways with multi-rail power architecture. IC Role / Device Role / Timing Role: Dedicated regulator for noise-sensitive RF and baseband subsystems, decoupled from noisy switching rails like 5 V USB or 12 V fan supplies. Use Value: Low 2 ms soft-start prevents system-wide reset during hot-plug events; synchronous rectification lowers heat generation near temperature-sensitive RF front-ends; latch-type SCP isolates faults without cascading system failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54331DR | 3 A, 3.5–28 V input, adjustable output (0.8–26 V), 570 kHz switching, no Auto PFM - requires external compensation. | Wider input range suits 24 V industrial systems; lacks integrated discharge and fixed 3.3 V option. | Select when input exceeds 16 V or adjustable output is needed; add external discharge FET if rapid VOUT decay is required. |
| MP2331GJ-Z | 3 A, 4.5–28 V input, fixed 3.3 V, 500 kHz switching, 2.5 µA shutdown, no integrated discharge circuit. | Lower quiescent current but no discharge function; requires external resistor network for enable threshold tuning. | Prefer for ultra-low-power always-on nodes where discharge is handled elsewhere; verify thermal derating at 85°C with MP2331's lower PSRR. |
Compared with RAA230131GSB#HA0, TPS54331DR offers broader input flexibility but adds design complexity, while MP2331GJ-Z matches the fixed 3.3 V output and footprint class but omits the integrated discharge circuit - making RAA230131GSB#HA0 uniquely suited for applications demanding guaranteed fast output discharge and simplified layout.
Availability
RAA230131GSB#HA0 is available at Aetrix Electronics and suitable for smart meter deployments, industrial PLC I/O modules, and surveillance camera SoMs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for RAA230131GSB#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, and connectivity solutions for industrial, automotive, and IoT markets.
The RAA23013x product line delivers highly integrated, thermally robust DC/DC converters optimized for space-constrained industrial and smart infrastructure applications where reliability, low standby power, and fast transient response are critical.
FAQ
What is the maximum output current capability of the RAA230131GSB#HA0 under continuous operation?
The RAA230131GSB#HA0 delivers up to 3 A continuous output current at 85°C ambient temperature when mounted on a standard 4-layer PCB with the exposed thermal pad properly soldered to ground. This rating assumes 12 V input, 3.3 V output, and adequate copper pour per Renesas' thermal derating curve (2600 mW at TA ≤ 25°C, decreasing by 26 mW/°C above).
Does the RAA230131GSB#HA0 require external feedback resistors to set its output voltage?
No, the RAA230131GSB#HA0 has a factory-trimmed fixed 3.3 V output. The FB pin is unused and must be left open - no external resistors are needed. This differs from the RAA230133 variant, which supports adjustable output via external R1/R2 dividers connected to FB and VOUT.
How does the Auto PFM mode in the RAA230131GSB#HA0 improve system efficiency?
The RAA230131GSB#HA0 automatically enters PFM mode below ~100 mA load, reducing switching frequency to minimize gate charge and core losses. At higher loads, it seamlessly transitions to fixed-frequency PWM mode. This dual-mode operation sustains >85% efficiency from 10 mA to 3 A - significantly extending battery life in always-on edge devices.
What happens to the output voltage when the RAA230131GSB#HA0 is disabled via the EN pin?
When the EN pin is pulled low, the RAA230131GSB#HA0 enters shutdown mode (1 µA current) and activates its internal discharge circuit. This 100–200 Ω switch rapidly pulls the VOUT node to GND, discharging output capacitors in milliseconds - eliminating hold-up time and preventing unintended logic states in downstream circuitry.
Is the RAA230131GSB#HA0 pin-compatible with other members of the RAA23013x family?
Yes, all RAA23013x variants (RAA230131, RAA230132, RAA230133) share identical 8-pin HLSOP packaging and pinout. Only the output voltage setting differs: RAA230131 is fixed 3.3 V, RAA230132 is fixed 5.0 V, and RAA230133 is adjustable (0.8–6.0 V). No PCB changes are needed when substituting within the RAA23013x series.
RAA230131GSB#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HLSOP
RAA230131GSB#HA0 FAQ
1.How can I place an order for RAA230131GSB#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA230131GSB#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 RAA230131GSB#HA0 reliable?
The price and inventory of RAA230131GSB#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA230131GSB#HA0 is usually 5 days.
3.What payment methods are accepted for RAA230131GSB#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA230131GSB#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA230131GSB#HA0?
RAA230131GSB#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA230131GSB#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 RAA230131GSB#HA0?
For technical support, including RAA230131GSB#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA230131GSB#HA0 requirements.
6.How does Aetrix verify that RAA230131GSB#HA0 is sourced from the original manufacturer or authorized distributors?
All RAA230131GSB#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 RAA230131GSB#HA0 meets industry standards.
7.What is the process for return or replacement of RAA230131GSB#HA0?
All RAA230131GSB#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA230131GSB#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 RAA230131GSB#HA0 part is unused and in its original packaging.
Return procedure for RAA230131GSB#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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