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Renesas RAA211412GP3#JA0
- Part No.:
- RAA211412GP3#JA0
- Manufacturer:
- Renesas
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
RAA211412GP3#JA0.pdf
- Description:
- IC REG BUCK ADJ 1A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,122
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Product details
Overview
RAA211412GP3#JA0 from Renesas Electronics is a DC/DC step-down (buck) regulator supporting 5.8V–45V input, delivering up to 1A continuous output current with adjustable output voltage down to 0.8V. It employs peak-current-mode PWM control at 630kHz, features internal soft-start and compensation, and integrates a 600mΩ high-side MOSFET. It is used in battery-powered tools and industrial power meters requiring compact, robust regulation.
For engineers reviewing the RAA211412GP3#JA0 datasheet, RAA211412GP3#JA0 pinout, RAA211412GP3#JA0 application, or RAA211412GP3#JA0 equivalent, this page delivers verified technical context, package mapping, functional alternatives, and design-critical specifications including UVLO thresholds (5.4V rising), feedback reference (0.8V ±2%), thermal shutdown (158°C), and pulse-skipping light-load operation.
Technical Context
The RAA211412GP3#JA0 implements peak-current-mode PWM control with fixed 630kHz switching frequency and internal slope compensation. Its integrated 600mΩ high-side MOSFET and bootstrap gate driver enable efficient operation across wide VIN ranges without external FETs or loop compensation components.
It features cycle-by-cycle overcurrent protection triggering at 1.36A (typ), input UVLO with 250mV hysteresis (5.4V rise / 5.15V fall), and output undervoltage protection activating when FB drops below 33% of nominal after soft-start. Thermal shutdown engages at 158°C with 28°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.8V to 45V - supports wide industrial and battery-derived rails including 12V, 24V, and 36V systems without external pre-regulation. |
| Output Current | Up to 1A continuous - sufficient for microcontrollers, sensors, and communication ICs in portable and distributed power applications. |
| Switching Frequency | 630kHz (±10%) - enables compact magnetics and low-output-ripple designs while maintaining EMI manageability. |
| Feedback Reference | 0.8V ±2% (−40°C to +125°C) - sets precise output voltage via external resistor divider; enables 0.8V–41V programmable VOUT. |
| Internal MOSFET rDS(on) | 600mΩ - reduces conduction loss and eliminates need for external high-side switch in most 1A applications. |
| Soft-Start Time | 1ms typical - controls output ramp rate to limit inrush current into downstream capacitors during power-up. |
| Quiescent Current | 300–450µA - ensures low standby power in always-on or battery-backed systems. |
Pinout & Package
The RAA211412GP3#JA0 is housed in a 6-lead TSOT23 package (P6.064C), optimized for space-constrained PCB layouts and thermally efficient surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Bootstrap supply | Provides gate drive voltage for internal high-side MOSFET; requires 0.1µF X7R ceramic capacitor to SW. |
| GND | Power and analog ground | Common return path for input/output currents and internal bias; must be connected to low-impedance ground plane. |
| FB | Feedback input | Inverting input of error amplifier; connects to resistor divider from VOUT to set output voltage with 0.8V reference. |
| EN | Enable control | High-voltage tolerant logic input (1.275V threshold); allows direct connection to VIN for simple on/off control. |
| VIN | Main input supply | Connects to input rail (5.8–45V); powers internal LDO and high-side FET drain; requires local ceramic decoupling. |
| SW | Switch node | Phase node connecting internal high-side FET source to inductor, diode, and boot capacitor; critical for EMI and layout. |
Key Features
| Feature | Design Value |
|---|---|
| Internal loop compensation | Eliminates external compensation network - reduces BOM count and simplifies design validation for stable operation across load/line conditions. |
| Pulse-skipping mode | Maintains regulation at light loads (<100mA) without forced PWM, improving efficiency in battery-powered standby states. |
| Cycle-by-cycle current limit | Protects internal MOSFET and external components by disabling switch each cycle exceeding 1.36A peak current. |
| Integrated BST regulator | Self-refreshes boot capacitor using internal 3V regulator - enables unlimited pulse skipping when VIN–VOUT > 3V, enhancing light-load efficiency. |
| Thermal shutdown with hysteresis | Shuts down at 158°C junction temperature and resumes only after cooling to ~130°C - prevents thermal runaway during overload or poor heatsinking. |
Applications
| Power Meters | Battery Powered Devices |
|---|---|
Use Scenario: High-accuracy electricity metering in smart grid endpoints with isolated MCU, ADC, and RF transceivers. IC Role / Device Role / Timing Role: Primary DC/DC regulator supplying 3.3V or 5V to metrology SoC and wireless modules from 12–45V utility bus or backup battery. Use Value: Wide input range accommodates fluctuating line voltage and battery decay; 1A output supports simultaneous active measurement and transmission bursts. | Use Scenario: Portable handheld test equipment powered by Li-ion or 18650 packs with variable state-of-charge (3.0–4.2V/cell × 2–3). IC Role / Device Role / Timing Role: Buck converter generating stable 3.3V rail for ARM Cortex-M host, display driver, and USB interface from unregulated battery stack. Use Value: Internal soft-start prevents inrush damage to battery protection ICs; pulse-skipping extends runtime in sleep modes with µA-level quiescent draw. |
| Distributed Power Systems | Handheld Power Tools |
Use Scenario: Modular industrial I/O nodes receiving 24V or 48V backplane power and distributing regulated rails to fieldbus transceivers and sensor interfaces. IC Role / Device Role / Timing Role: Local point-of-load regulator converting 24V/48V bus to 5V or 12V for isolated CAN/FlexRay PHYs and analog front-ends. Use Value: Input UVLO (5.4V) prevents erratic behavior during brownouts; 600mΩ MOSFET minimizes heat generation in sealed enclosures with limited airflow. | Use Scenario: Cordless drill/driver electronics where motor surge currents cause rapid battery voltage sag during startup and stall. IC Role / Device Role / Timing Role: Regulator powering motor control MCU, Hall sensors, and LED indicators from 10.8–18V nominal Li-ion pack under dynamic load. Use Value: Fast transient response and hiccup-mode UVP protect against false resets during motor commutation spikes; TSOT23 footprint saves board space near motor driver IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMR14010ADRCR | 40V max input, 1A output, 600kHz, requires external compensation; no integrated BST regulator. | Lacks internal soft-start and pulse-skipping; higher BOM count and layout sensitivity. | Choose when needing TI's WEBENCH support or compatibility with existing TI-based designs. |
| MP2451DT-LF-Z | 36V max input, 0.6A output, 2MHz switching, integrated compensation; no UVP or hiccup-mode fault recovery. | Lower current rating and missing output undervoltage protection reduce robustness in safety-critical tools/meters. | Prefer for space-constrained 2MHz designs where 0.6A suffices and thermal margin is ample. |
Compared with LMR14010ADRCR and MP2451DT-LF-Z, the RAA211412GP3#JA0 offers broader input range (45V), full 1A capability, integrated UVP with hiccup recovery, and self-refreshing BST-making it uniquely suited for industrial battery tools and utility-grade power meters demanding reliability across voltage extremes.
Availability
RAA211412GP3#JA0 is available at Aetrix Electronics and suitable for power meters, battery-powered devices, and distributed power systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant TSOT23 packaging.
Supply support for RAA211412GP3#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 automotive, industrial, and IoT markets.
The RAA211412GP3#JA0 belongs to Renesas' high-voltage buck regulator product line, designed specifically for rugged industrial and battery-operated applications demanding wide VIN, integrated protection, and minimal external components.
FAQ
What is the minimum input voltage required for RAA211412GP3#JA0 to start switching?
The RAA211412GP3#JA0 features input undervoltage lockout (UVLO) with a rising threshold of 5.4V (typical). It will not begin switching until VIN exceeds this level. The UVLO hysteresis is 250mV, so the device remains active until VIN falls below approximately 5.15V. This ensures reliable startup even with non-monotonic input ramps and prevents erratic operation during brownout conditions. The RAA211412GP3#JA0 is therefore unsuitable for direct Li-ion single-cell (2.7–4.2V) inputs without pre-regulation.
Does RAA211412GP3#JA0 require an external bootstrap capacitor, and what value is recommended?
Yes, the RAA211412GP3#JA0 requires an external bootstrap capacitor between BST and SW pins to drive its internal high-side MOSFET. Renesas specifies a 0.1µF X7R ceramic capacitor rated for 16V as the standard recommendation. This value ensures sufficient charge storage for gate drive under all operating conditions, including pulse-skipping mode. Using a lower capacitance or inappropriate dielectric (e.g., Y5V) may cause gate drive collapse and premature switch failure. The RAA211412GP3#JA0 integrates a 3V BST regulator that refreshes this capacitor automatically.
How does the RAA211412GP3#JA0 handle output short-circuit conditions?
Under sustained output short-circuit, the RAA211412GP3#JA0 activates its cycle-by-cycle current limit (1.36A typical), causing VOUT to collapse. Once FB voltage drops below 33% of nominal (0.264V), output undervoltage protection triggers a 23ms hiccup interval where switching halts completely. After this timeout, the device attempts automatic restart. If the fault persists, it repeats the hiccup cycle. This protects both the RAA211412GP3#JA0 and external components from thermal damage while enabling self-recovery without manual intervention.
Can RAA211412GP3#JA0 operate in dropout mode, and what happens to regulation?
The RAA211412GP3#JA0 does not regulate in true dropout; instead, when VIN approaches VOUT, it increases duty cycle toward maximum (~91%). As VIN drops further, VOUT follows VIN minus losses (e.g., rDS(on) × IOUT), resulting in unregulated "dropout behavior." If FB then falls to the UVP threshold (33% of 0.8V), the device enters hiccup mode. The RAA211412GP3#JA0 cannot maintain constant VOUT below VIN − (rDS(on) × IOUT) - users must ensure minimum VIN margin per application requirements.
What is the thermal resistance (θJA) of RAA211412GP3#JA0 in its TSOT23-6 package?
The RAA211412GP3#JA0 has a typical junction-to-ambient thermal resistance (θJA) of 114°C/W when mounted on a high-effective thermal conductivity test board per JEDEC JESD51-2. This value assumes optimal PCB layout: direct copper attachment, multiple thermal vias to inner ground planes, and adequate copper area under the package. In real-world 2-layer boards with minimal copper, θJA may exceed 180°C/W - derating calculations must use measured or simulated thermal performance. The RAA211412GP3#JA0 includes thermal shutdown at 158°C to prevent damage under such conditions.
RAA211412GP3#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):
- 5.8V
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 42V
- Current - Output:
- 1A
- Frequency - Switching:
- 630kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
RAA211412GP3#JA0 FAQ
1.How can I place an order for RAA211412GP3#JA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA211412GP3#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 RAA211412GP3#JA0 reliable?
The price and inventory of RAA211412GP3#JA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA211412GP3#JA0 is usually 5 days.
3.What payment methods are accepted for RAA211412GP3#JA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA211412GP3#JA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA211412GP3#JA0?
RAA211412GP3#JA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA211412GP3#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 RAA211412GP3#JA0?
For technical support, including RAA211412GP3#JA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA211412GP3#JA0 requirements.
6.How does Aetrix verify that RAA211412GP3#JA0 is sourced from the original manufacturer or authorized distributors?
All RAA211412GP3#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 RAA211412GP3#JA0 meets industry standards.
7.What is the process for return or replacement of RAA211412GP3#JA0?
All RAA211412GP3#JA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA211412GP3#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 RAA211412GP3#JA0 part is unused and in its original packaging.
Return procedure for RAA211412GP3#JA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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