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Renesas RAA2112334GP3#JA0
- Part No.:
- RAA2112334GP3#JA0
- Manufacturer:
- Renesas
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
RAA2112334GP3#JA0.pdf
- Description:
- IC REG BUCK ADJ 3A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,973
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Product details
Overview
RAA2112334GP3#JA0 from Renesas Electronics is a 24V-input, 3A-output synchronous buck regulator with current-mode constant on-time (COT) control, integrated 85mΩ high-side and 45mΩ low-side MOSFETs, 1.4MHz switching frequency, and 0.6V ±2% reference voltage. It delivers regulated power in space-constrained industrial I/O supplies and embedded system rails.
For engineers reviewing the RAA2112334GP3#JA0 datasheet, RAA2112334GP3#JA0 pinout, RAA2112334GP3#JA0 application, or RAA2112334GP3#JA0 equivalent, key selection considerations include input UVLO threshold (4.3V typ), soft-start time (1.2ms), minimum on-time (66ns), PFM light-load operation, and comprehensive protection including LSOC, OUVP with hiccup mode, OTP (170°C), and VIN UVLO hysteresis (400mV).
Technical Context
The RAA2112334GP3#JA0 implements current-mode COT control with internal compensation, enabling stable regulation across 4.5–24V input while maintaining fixed 1.4MHz operation in CCM and variable-frequency PFM in DCM. Its integrated power stage eliminates external MOSFETs and gate drivers.
Functional blocks include a 0.6V precision bandgap reference, error amplifier with soft-start ramp, BST regulator for high-side drive, and independent comparators for LSOC detection (valley-current sensing), FB undervoltage (65% of VREF), and thermal shutdown with 40°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide industrial supply rails including 12V and 24V systems without external pre-regulation. |
| Output Current | Up to 3A continuous - sufficient for FPGA I/O banks, microcontroller cores, and sensor interface rails. |
| Switching Frequency | 1.4MHz nominal - enables compact magnetics and reduces output filter size; frequency varies in PFM mode under light load. |
| Feedback Reference | 0.6V ±2% - sets output voltage via external resistor divider; enables precise 1.8V, 3.3V, or 5V generation with <±1% total error. |
| Quiescent Current | 400µA - minimizes standby power loss in always-on subsystems such as real-time clocks or wake-up controllers. |
| Soft-Start Time | 1.2ms - prevents inrush current and output overshoot during power-up; internally controlled, no external capacitor required. |
| Protection Features | LSOC limit (3.25A typ), VIN UVLO (4.3V rising/3.9V falling), OUVP with hiccup (65% VREF), OTP (170°C/130°C hysteresis) - ensures robust fault recovery without external supervision circuitry. |
Pinout & Package
RAA2112334GP3#JA0 is housed in a 6-lead TSOT23 package (2.9mm × 1.6mm × 0.8mm), optimized for high thermal performance (θJA = 105°C/W) and PCB area efficiency in dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power ground reference | Primary return path for high-current switching loop; must be connected to low-impedance PCB ground plane adjacent to SW and VIN pins. |
| SW (Pin 2) | Switch node | Drives external inductor and bootstrap capacitor; carries high di/dt; requires minimal trace length and tight coupling to GND for EMI control. |
| VIN (Pin 3) | Main power input | Supplies IC bias and high-side FET; requires local 10µF ceramic decoupling placed within 2mm of pin per layout guidelines. |
| FB (Pin 4) | Feedback input | Senses output voltage via resistor divider; high-impedance node sensitive to noise-must be routed away from SW/BST and shielded from switching fields. |
| EN (Pin 5) | Enable control | Logic-level input with 1.31V rising threshold; supports direct tie-to-VIN for always-on or resistor-divider programming of VIN UVLO. |
| BST (Pin 6) | Bootstrap supply | Provides gate drive voltage for internal high-side MOSFET; requires 0.1µF X7R ceramic capacitor directly between BST and SW pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 85mΩ HS + 45mΩ LS MOSFETs eliminate external FETs and driver ICs, reducing BOM count and layout complexity. |
| Constant On-Time Control | Current-mode COT with internal compensation delivers fast transient response (<10µs recovery) and inherent stability across input/output variations. |
| Light-Load Efficiency | PFM mode reduces switching losses at <100mA loads, maintaining >85% efficiency down to 1mA output current. |
| Hiccup-Mode Protection | OUVP and LSOC faults trigger 1.5ms ON / 13.5ms OFF cycling-limits average power dissipation during sustained short-circuit conditions. |
| Accurate Enable Threshold | 1.31V EN rising threshold with 110mV hysteresis enables reliable sequencing and programmable VIN UVLO using external resistors. |
Applications
| Industrial PLC I/O Modules | Embedded Microcontroller Power Rails |
|---|---|
Use Scenario: Providing isolated 3.3V or 5V power to digital I/O channels in programmable logic controllers operating from 24V DC field buses. IC Role / Device Role / Timing Role: Primary buck regulator delivering clean, protected DC power to optocoupler drivers and level-shifters. Use Value: Integrated LSOC and hiccup-mode OUVP prevent latch-up during field-wire shorts; 1.4MHz switching allows small 1.5µH inductors fitting tight DIN-rail module footprints. | Use Scenario: Generating core voltage (1.8V) and I/O voltage (3.3V) for ARM Cortex-M or RISC-V SoCs in edge-node gateways. IC Role / Device Role / Timing Role: Main system PMIC supplying processor subsystems with sequenced enable control and soft-start. Use Value: 400µA quiescent current extends battery backup runtime; accurate 0.6V reference enables <±1% output tolerance critical for ADC reference stability. |
| Factory Automation Sensors | Ruggedized HMI Displays |
Use Scenario: Powering MEMS accelerometers, temperature transmitters, and 4–20mA loop-powered sensors in harsh factory environments. IC Role / Device Role / Timing Role: Point-of-load regulator converting 12V or 24V bus to low-noise analog supply rails. Use Value: 66ns minimum on-time supports high VIN/VOUT ratios (e.g., 24V→3.3V); thermal shutdown at 170°C protects against enclosure overheating. | Use Scenario: Supplying 5V and 12V rails to LCD backlight drivers and touch controller ICs in industrial human-machine interfaces. IC Role / Device Role / Timing Role: Secondary regulator handling dynamic load steps from display refresh cycles and capacitive touch bursts. Use Value: Fast COT control achieves <50mV output deviation during 0→3A 0.45A/µs load transients; PFM mode maintains efficiency during idle screen periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 4.5–36V input, 0.8A output, 2MHz fixed frequency, no PFM mode, 0.8V reference | Limited to lower current; lacks hiccup-mode OUVP and accurate EN threshold | Choose when higher input voltage range (up to 36V) is needed and 0.8A suffices; not suitable for 3A industrial loads. |
| TPS563201DDCR | 4.5–17V input, 3A output, 500kHz–1.7MHz adjustable frequency, 0.6V reference, no integrated BST capacitor support | Requires external BST capacitor routing; no LSOC valley-current sensing; OTP at 150°C | Prefer when design flexibility (frequency adjustment, external compensation) outweighs integrated protection and layout simplicity. |
Compared with MP2451DT-LF-Z and TPS563201DDCR, RAA2112334GP3#JA0 provides superior thermal robustness (170°C OTP), integrated hiccup-mode fault recovery, and optimized TSOT23 layout for high-current density-making it ideal for space-constrained 3A industrial power rails where reliability under overload is critical.
Availability
RAA2112334GP3#JA0 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, embedded microcontroller power rails, and factory automation sensors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for RAA2112334GP3#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 devices, and timing solutions for automotive, industrial, and infrastructure markets.
The RAA211233 family delivers highly integrated, thermally robust buck regulators targeting space- and reliability-critical industrial power conversion-designed to replace discrete FET+controller solutions in 3A-class point-of-load applications.
FAQ
What is the maximum output voltage supported by the RAA2112334GP3#JA0?
The RAA2112334GP3#JA0 supports an absolute maximum output voltage of 11V. Its feedback reference is fixed at 0.6V, so output voltage is set externally via resistor divider. For example, a 45.3kΩ/10kΩ divider yields 3.3V (VOUT = 0.6 × (1 + RFB1/RFB2)). The device's operating range is validated up to 11V, but Renesas recommends margin below this limit to accommodate circuit losses and ensure stability across temperature and load.
Does the RAA2112334GP3#JA0 require an external bootstrap capacitor?
Yes, the RAA2112334GP3#JA0 requires a 0.1µF X7R ceramic capacitor connected directly between the BST and SW pins. This capacitor supplies gate drive voltage for the internal high-side MOSFET. Renesas specifies ≥10V rating and placement adjacent to the IC to minimize parasitic inductance. Failure to install this capacitor will prevent high-side FET turn-on and cause regulator failure.
How does the RAA2112334GP3#JA0 handle overcurrent conditions?
The RAA2112334GP3#JA0 implements low-side overcurrent (LSOC) protection by monitoring valley current through the internal low-side MOSFET. When LSOC is detected (typical limit 3.25A), the device skips high-side switching cycles until current falls below threshold. If LSOC coincides with output undervoltage (FB < 0.39V), it triggers hiccup mode-1.5ms active followed by 13.5ms off-limiting average power dissipation during sustained faults.
Can the RAA2112334GP3#JA0 operate with a 5V input supply?
Yes, the RAA2112334GP3#JA0 operates with input voltages as low as 4.5V, making 5V a valid supply source. At 5V input, typical applications include generating 1.05V, 1.8V, or 3.3V outputs. Table 2 in the datasheet lists recommended components (e.g., 0.68µH inductor, 55µF output capacitor) for 5V→3.3V conversion. Input UVLO remains functional, disabling regulation if VIN drops below ~3.9V.
What is the thermal resistance of the RAA2112334GP3#JA0 in its TSOT23 package?
The RAA2112334GP3#JA0 has a junction-to-ambient thermal resistance (θJA) of 105°C/W when mounted on a standard test board, and 51°C/W on the Renesas evaluation board (RTKA211233DE0000BU). Its junction-to-case (θJC) is 45°C/W. These values assume proper PCB copper pour and thermal vias under the exposed pad (if present)-though the TSOT23 variant uses standard leadframe thermal conduction, not an exposed thermal pad.
RAA2112334GP3#JA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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):
- 24V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 11V
- Current - Output:
- 3A
- Frequency - Switching:
- 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
RAA2112334GP3#JA0 FAQ
1.How can I place an order for RAA2112334GP3#JA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2112334GP3#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 RAA2112334GP3#JA0 reliable?
The price and inventory of RAA2112334GP3#JA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2112334GP3#JA0 is usually 5 days.
3.What payment methods are accepted for RAA2112334GP3#JA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2112334GP3#JA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2112334GP3#JA0?
RAA2112334GP3#JA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2112334GP3#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 RAA2112334GP3#JA0?
For technical support, including RAA2112334GP3#JA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2112334GP3#JA0 requirements.
6.How does Aetrix verify that RAA2112334GP3#JA0 is sourced from the original manufacturer or authorized distributors?
All RAA2112334GP3#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 RAA2112334GP3#JA0 meets industry standards.
7.What is the process for return or replacement of RAA2112334GP3#JA0?
All RAA2112334GP3#JA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2112334GP3#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 RAA2112334GP3#JA0 part is unused and in its original packaging.
Return procedure for RAA2112334GP3#JA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RAA2112334GP3#JA0 Tags
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