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Renesas RAA2144094GQS#GA0
- Part No.:
- RAA2144094GQS#GA0
- Manufacturer:
- Renesas
- Package:
- TO-243AA
- Datasheet:
-
RAA2144094GQS#GA0.pdf
- Description:
- LOW IQ, 40V VIN, FIX VOUT 9V, 15
- Quantity:
- Payment:
- Shipping:
Inventory:3,774
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Product details
Overview
RAA2144094GQS#GA0 from Renesas Electronics is a 9V fixed-output, low-quiescent current (3.8µA) PMOS LDO regulator in a 3-lead SOT-89 package, rated for 150mA output current and 40V max input voltage. It features ±3% output accuracy over line/load/temperature, UVLO with hysteresis, thermal shutdown at 150°C, and stable operation with only 2.2µF ceramic output capacitance. It is designed for battery-powered industrial sensors and motor drive auxiliary rails.
For engineers reviewing the RAA2144094GQS#GA0 datasheet, RAA2144094GQS#GA0 pinout, RAA2144094GQS#GA0 application, or RAA2144094GQS#GA0 equivalent, key selection criteria include dropout voltage at 100mA (764mV typ), shutdown current (248nA typ), PSRR at 10kHz (62dB), junction temperature range (–40°C to +125°C), and compatibility with standard SOT-89 PCB footprints.
Technical Context
The RAA2144094GQS#GA0 implements a PMOS pass transistor architecture with internal bandgap reference and error amplifier feedback loop, enabling precise DC regulation without external resistors. Its UVLO circuit (rising threshold 2.42V, hysteresis 0.22V) prevents erratic startup during brown-out conditions, while enable control is integrated into the VIN pin-no separate EN pin exists in the SOT-89 variant.
Thermal protection uses a dedicated junction-sensing circuit with 150°C trip point and 20°C hysteresis to prevent latch-up during sustained overload. Current limiting is implemented as a foldback-style short-circuit protection (250mA typ limit), and output stability is guaranteed with ≥2.2µF X5R/X7R MLCCs placed adjacent to VOUT and GND pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 9.0V ±3% (8.63–9.35V) across –40°C to +125°C, line, and load - ensures stable MCU core or analog sensor bias under varying conditions. |
| Max Input Voltage | 40V continuous, 45V transient tolerance - supports direct connection to unregulated 24V/36V industrial bus rails without pre-regulation. |
| Dropout Voltage | 764mV typical at 100mA load - enables regulation from 9.76V input, critical for maintaining 9V rail during battery discharge or line sag. |
| Quiescent Current | 3.8µA typical at no load - extends battery life in always-on remote sensors by minimizing standby power loss. |
| Output Capacitor | Stable with ≥2.2µF ceramic (X5R/X7R) - eliminates need for tantalum or electrolytic capacitors, reducing BOM cost and board area. |
| Thermal Shutdown | 150°C trip with 20°C hysteresis - provides robust fault recovery in enclosed enclosures without requiring external thermal monitoring. |
| PSRR @ 10kHz | 62dB (measured with CIN = none, VIN = VOUT + 1.9V) - suppresses high-frequency switching noise from adjacent DC/DC converters. |
Pinout & Package
RAA2144094GQS#GA0 is housed in a 3-lead SOT-89 package with exposed thermal pad (pin 2 connected to GND internally). The package offers 52°C/W junction-to-ambient thermal resistance, enabling 150mA operation at up to +85°C ambient without heatsink under typical PCB copper area (≥1 cm²).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input voltage supply | Accepts 4.5V–40V; requires ≥2.2µF ceramic bypass capacitor close to pin; supports 45V transients - must be decoupled before entering noisy power domains. |
| GND (Pin 2) | Ground reference and thermal path | Internally connected to exposed metal pad; serves as primary heat sink and signal return - must be tied to solid PCB ground plane with multiple vias. |
| VOUT (Pin 3) | Regulated 9V output | Delivers up to 150mA; requires ≥2.2µF ceramic capacitor from VOUT to GND; placement within 2mm of pin minimizes ESR-induced instability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 3.8µA typical enables >10-year battery life in 20µA sleep-mode IoT nodes using coin cells or Li-SOCl₂ batteries. |
| Wide input voltage range | 4.5V–40V operation accommodates automotive cold-crank (6.5V) through industrial 36V bus drops without external protection circuitry. |
| ±3% output accuracy | Guaranteed across full temperature, line, and load range - eliminates need for post-regulation trimming in precision analog front-ends. |
| UVLO with hysteresis | 2.42V rising / 2.20V falling thresholds prevent oscillation during slow-rising inputs (e.g., battery charging circuits or soft-start supplies). |
| Thermal shutdown recovery | 150°C trip + 20°C hysteresis ensures automatic restart after fault clearance - avoids manual reset in inaccessible field-deployed equipment. |
Applications
| Industrial Sensor Node | Motor Drive Auxiliary Rail |
|---|---|
Use Scenario: Remote wireless pressure/temperature transmitter powered by primary lithium battery, operating continuously for 5+ years. IC Role / Device Role / Timing Role: Primary 9V bias regulator for analog signal conditioning, ADC reference, and RF transceiver power domain. Use Value: 3.8µA IQ and 248nA shutdown current minimize self-discharge; 40V input withstands surge events on long sensor cables. | Use Scenario: Isolated gate driver supply in 24V BLDC motor controller, where compact size and thermal resilience are critical. IC Role / Device Role / Timing Role: Local 9V rail generation for high-side IGBT/SiC gate drivers and op-amp biasing in noisy power stage environment. Use Value: 62dB PSRR at 10kHz rejects PWM switching noise; SOT-89 thermal pad dissipates 0.8W at 85°C ambient without heatsink. |
| Portable Medical Monitor | Automotive Body Control Module |
Use Scenario: Handheld ECG device with rechargeable Li-ion battery and low-power display backlight driver. IC Role / Device Role / Timing Role: Stable 9V supply for analog front-end amplifiers and precision DACs used in signal acquisition path. Use Value: ±3% output accuracy ensures consistent gain calibration across temperature; 2.2µF ceramic stability simplifies layout in space-constrained handheld enclosure. | Use Scenario: Power management for LIN transceivers, LED drivers, and microcontroller peripherals in 12V vehicle electrical system. IC Role / Device Role / Timing Role: Secondary 9V rail derived from main 12V bus, tolerant of load-dump (45V) and cold-crank (6.5V) transients. Use Value: 45V transient rating eliminates need for TVS diode; UVLO prevents malfunction during engine start voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B902MR-G | 9V fixed output, 150mA, SOT-23-5 package; includes EN pin and 1µA IQ but only 28V max input. | Requires PCB redesign for 5-pin footprint; lacks 40V/45V transient capability - unsuitable for industrial 36V bus or automotive load-dump. | Select when enable control is mandatory and input stays below 28V; verify thermal performance with θJA = 220°C/W. |
| Diodes Inc. AP7361-9-3SOT | 9V fixed output, 150mA, SOT-23-3 package; 2.5µA IQ, 30V max input, no UVLO or thermal shutdown. | No built-in protection - requires external circuitry for fault handling; limited to benign environments like consumer USB-powered devices. | Choose only for cost-sensitive, non-safety-critical applications with clean, regulated input and ambient <70°C. |
Compared with XC6219B902MR-G and AP7361-9-3SOT, RAA2144094GQS#GA0 delivers superior industrial robustness via 40V/45V rating, integrated UVLO+thermal shutdown, and SOT-89 thermal performance - making it the only option qualified for harsh 24V/36V systems without derating or external protection.
Availability
RAA2144094GQS#GA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, motor drive auxiliary rails, portable medical monitors, and automotive body control modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for RAA2144094GQS#GA0 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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets.
The RAA21440x family was engineered specifically for ultra-low-power, high-input-voltage LDO applications in battery-operated and industrial equipment - emphasizing quiescent current, transient robustness, and protection integration over feature-rich configurability.
FAQ
What is the maximum input voltage rating for RAA2144094GQS#GA0, and does it include transient tolerance?
The RAA2144094GQS#GA0 has a maximum continuous input voltage of 40V and is rated for 45V transient tolerance per its absolute maximum ratings. This allows direct use on 24V or 36V industrial bus lines subject to ISO 7637-2 or similar surge standards without external clamping. The 45V rating is validated under pulse conditions defined in the datasheet's absolute maximum section.
Does RAA2144094GQS#GA0 include an enable (EN) pin, and how is on/off control implemented?
RAA2144094GQS#GA0 does not have a dedicated EN pin because it is packaged in the 3-lead SOT-89 variant. Enable functionality is inherent: the device powers up automatically when VIN exceeds the UVLO rising threshold (2.42V). There is no active disable mode - operation ceases only when VIN falls below the UVLO falling threshold (2.20V). This simplifies design for always-on applications.
What output capacitor value and type are required for stable operation of RAA2144094GQS#GA0?
RAA2144094GQS#GA0 is stable with a minimum 2.2µF X5R or X7R multilayer ceramic capacitor (MLCC) from VOUT to GND. Renesas recommends de-rating based on DC bias and temperature; X7R is preferred for lower capacitance drift. The capacitor must be placed within 2mm of the VOUT and GND pins to ensure stability across –40°C to +125°C.
How does the thermal shutdown behavior of RAA2144094GQS#GA0 affect system reliability during overload?
RAA2144094GQS#GA0 shuts down at 150°C junction temperature and re-enables only after cooling by 20°C (to ~130°C), providing controlled fault recovery. During sustained overload, it cycles ON/OFF to limit average power dissipation. This prevents permanent damage and allows automatic resumption of regulation once the fault clears - critical for unattended industrial deployments.
Can RAA2144094GQS#GA0 be used with input voltages below its specified minimum operating voltage of 4.5V?
No - RAA2144094GQS#GA0 requires a minimum input voltage of 4.5V to maintain regulation for its 9V output, as specified in the recommended operating conditions. Below 4.5V, the device enters UVLO and disables output. Attempting operation at 3.3V or other sub-threshold voltages will result in no regulated output and potential undefined behavior.
RAA2144094GQS#GA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.756V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 7.3 µA
- Current - Supply (Max):
- 231 µA
- PSRR:
- 75dB ~ 66dB (10Hz ~ 1MHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
RAA2144094GQS#GA0 FAQ
1.How can I place an order for RAA2144094GQS#GA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2144094GQS#GA0 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 RAA2144094GQS#GA0 reliable?
The price and inventory of RAA2144094GQS#GA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2144094GQS#GA0 is usually 5 days.
3.What payment methods are accepted for RAA2144094GQS#GA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2144094GQS#GA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2144094GQS#GA0?
RAA2144094GQS#GA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2144094GQS#GA0 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 RAA2144094GQS#GA0?
For technical support, including RAA2144094GQS#GA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2144094GQS#GA0 requirements.
6.How does Aetrix verify that RAA2144094GQS#GA0 is sourced from the original manufacturer or authorized distributors?
All RAA2144094GQS#GA0 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 RAA2144094GQS#GA0 meets industry standards.
7.What is the process for return or replacement of RAA2144094GQS#GA0?
All RAA2144094GQS#GA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2144094GQS#GA0, 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 RAA2144094GQS#GA0 part is unused and in its original packaging.
Return procedure for RAA2144094GQS#GA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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