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Renesas RAA2144054GQS#GA0
- Part No.:
- RAA2144054GQS#GA0
- Manufacturer:
- Renesas
- Package:
- TO-243AA
- Datasheet:
-
RAA2144054GQS#GA0.pdf
- Description:
- LOW IQ, 40V VIN, FIX VOUT 5V, 15
- Quantity:
- Payment:
- Shipping:
Inventory:4,216
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Product details
Overview
RAA2144054GQS#GA0 from Renesas Electronics is a 5V fixed-output, low-quiescent current (3.8µA) PMOS LDO regulator in a 5-pin SOT-23 package, delivering up to 150mA with ±3% output voltage accuracy over line/load/temperature and 40V max input voltage. It features enable control, UVLO with hysteresis, thermal shutdown, and stable operation with ≥2.2µF ceramic output capacitance - used in battery-powered motor drives and portable instrumentation.
For engineers reviewing the RAA2144054GQS#GA0 datasheet, RAA2144054GQS#GA0 pinout, RAA2144054GQS#GA0 application, or RAA2144054GQS#GA0 equivalent, key selection criteria include dropout voltage at 100mA (737mV typ), shutdown current (<0.5µA), input UVLO thresholds (2.2V rising / 2.2V falling), and compatibility with compact PCB layouts requiring minimal external components.
Technical Context
This LDO uses a PMOS pass transistor architecture with internal bandgap reference and error amplifier for DC regulation. Its enable pin (EN) provides active-high logic control with 1.5V typical threshold and hysteresis, while UVLO prevents startup below 2.2V input and ensures clean turn-on during line transients.
Protection functions are integrated: short-circuit current limit (250mA typ), over-temperature shutdown at 150°C with 20°C hysteresis, and thermal foldback under sustained overload. The device operates across –40°C to +125°C junction temperature with 174°C/W θJA in SOT-23.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±3% - ensures stable rail for microcontrollers and sensors without external feedback. |
| Max Input Voltage | 40V with 45V transient tolerance - supports 24V industrial bus and automotive cold-crank scenarios. |
| Quiescent Current | 3.8µA typ at no load - enables multi-year battery life in always-on IoT endpoints. |
| Dropout Voltage | 737mV typ at 100mA - allows regulation from 5.74V input, critical for low-headroom 6V battery systems. |
| Output Accuracy | ±3% over line, load, and temperature - eliminates need for post-regulation trimming in cost-sensitive designs. |
| Stability Capacitor | 2.2µF min ceramic COUT - enables use of small, low-ESR MLCCs without external compensation. |
| Enable Threshold | 1.5V typ rising edge - compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Shutdown | 150°C junction with 20°C hysteresis - prevents latch-up during intermittent overloads in enclosed enclosures. |
Pinout & Package
RAA2144054GQS#GA0 is housed in a RoHS-compliant 5-lead SOT-23 package (JEDEC MO-178AA), with exposed pad for thermal enhancement. Pin 1 = VIN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC, Pin 5 = VOUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Accepts 4.5–40V; requires ≥2.2µF ceramic bypass capacitor placed adjacent to minimize trace inductance. |
| GND (Pin 2) | Power ground reference | Must connect directly to low-impedance PCB ground plane; serves as return path for all internal currents. |
| EN (Pin 3) | Active-high enable control | Pull to VIN for automatic start-up; drive with MCU GPIO; must not float - tie to VIN if unused. |
| NC (Pin 4) | No internal connection | May be left floating or tied to GND; no electrical function or thermal benefit. |
| VOUT (Pin 5) | Regulated 5V output | Delivers up to 150mA; requires ≥2.2µF ceramic capacitor to GND; place capacitor within 2mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 3.8µA enables >10-year battery life in coin-cell-powered remote sensors. |
| Integrated enable with hysteresis | 1.5V EN threshold with hysteresis prevents chatter during noisy MCU wake-up sequences. |
| UVLO with 220mV hysteresis | Ensures clean startup above 2.2V and avoids oscillation during brown-out conditions on long cables. |
| Thermal shutdown with 20°C hysteresis | Prevents thermal runaway in sealed enclosures by cycling off at 150°C and resuming only after cooling to 130°C. |
| PMOS pass transistor architecture | Eliminates need for external pull-down resistor on EN and supports reverse-polarity protection at input. |
| Stable with 2.2µF ceramic output cap | Reduces BOM count and board area vs. traditional LDOs requiring tantalum or larger ceramics. |
Applications
| Industrial Motor Control | Portable Medical Instrumentation |
|---|---|
Use Scenario: Powering gate drivers and position sensors in 24V brushless DC motor modules with intermittent high-current bursts. IC Role / Device Role / Timing Role: Primary 5V bias rail regulator supplying isolated gate driver ICs and Hall-effect sensors. Use Value: 40V input rating withstands back-EMF spikes; 150mA output sustains sensor + driver loads; low IQ extends runtime between battery charges. | Use Scenario: Supplying analog front-end and low-power MCU in handheld ECG monitors powered by two AA cells. IC Role / Device Role / Timing Role: Main system LDO converting 3.0–4.2V battery range to stable 5V for ADC reference and display backlight driver. Use Value: 3.8µA IQ minimizes standby drain; ±3% accuracy ensures consistent ADC full-scale; SOT-23 footprint saves space in slim form factor. |
| Automotive Body Control Module | Smart Building Sensor Node |
Use Scenario: Regulating 5V rail for LIN transceivers and door-lock actuators in 12V vehicle subsystems with load-dump transients. IC Role / Device Role / Timing Role: Secondary LDO downstream of main DC/DC converter, providing noise-isolated 5V for communication ICs. Use Value: 45V transient tolerance survives ISO 7637-2 pulse 5a; UVLO prevents erratic behavior during cranking; -40°C to +125°C operation meets AEC-Q100 ambient requirements. | Use Scenario: Powering Zigbee SoC, temperature/humidity sensor, and EEPROM in battery-operated HVAC occupancy sensors. IC Role / Device Role / Timing Role: Always-on LDO maintaining real-time clock and sensor bias during deep-sleep cycles. Use Value: <0.5µA shutdown current enables 5+ year battery life; 2.2µF stability allows use of 0402 MLCCs; EN pin enables synchronized wake-up with host MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6215B502MR-G | 5V fixed, 150mA, 3.5µA IQ, SOT-23-5 - lacks EN pin and UVLO; dropout 450mV @100mA. | No enable control or input monitoring - unsuitable for sequenced power systems or brown-out detection. | Select when EN/UVLO are unnecessary and lower dropout is prioritized over system-level supervision. |
| Diodes Inc. AP7361-50SG-7 | 5V fixed, 300mA, 12µA IQ, SOT-23-5 - includes EN but no UVLO; dropout 600mV @100mA; higher IQ. | Higher current capability but less suitable for ultra-low-power battery systems due to 3× higher IQ. | Select when load exceeds 150mA or when higher PSRR at 1MHz (>65dB) is required over extended frequency range. |
Compared with XC6215B502MR-G and AP7361-50SG-7, RAA2144054GQS#GA0 uniquely combines sub-4µA quiescent current, integrated EN + UVLO supervision, and 40V input capability in SOT-23 - making it optimal for safety-aware, long-life, wide-input industrial and automotive edge nodes.
Availability
RAA2144054GQS#GA0 is available at Aetrix Electronics and suitable for industrial motor control, portable medical instrumentation, automotive body electronics, and smart building sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for RAA2144054GQS#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 connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The RAA21440x family is designed specifically for ultra-low-power, wide-input-voltage LDO applications in battery-backed and harsh-environment systems where reliability, supervision, and minimal board space are critical.
FAQ
What is the maximum input voltage rating for RAA2144054GQS#GA0, and does it support automotive load-dump transients?
RAA2144054GQS#GA0 has an absolute maximum input voltage of +45V and operates continuously up to +40V. Its design includes robust transient tolerance aligned with ISO 7637-2 Pulse 5a (load dump), enabling reliable use in 12V and 24V automotive subsystems without external clamping circuitry. This rating is confirmed in the Absolute Maximum Ratings table (Page 5) and reinforced by transient response waveforms in Figures 31–34 of the datasheet.
Does RAA2144054GQS#GA0 require an external pull-up resistor on the EN pin, and what happens if it's left unconnected?
Yes - the EN pin of RAA2144054GQS#GA0 must not be left floating. If unused, it must be tied directly to VIN to ensure reliable enablement. When driven by an open-drain/open-collector source (e.g., MCU GPIO), a 1kΩ–10kΩ pull-up to VIN is required. Leaving EN unconnected risks undefined startup behavior, potential oscillation, or failure to regulate - per Pin Descriptions (Page 4) and Enable Control section (Page 16).
What is the minimum output capacitor value required for stable operation of RAA2144054GQS#GA0, and why is ceramic preferred?
RAA2144054GQS#GA0 is stable with a minimum 2.2µF X5R/X7R ceramic output capacitor (COUT). Ceramic is preferred due to its low ESR/ESL, wide temperature range, and compact size - eliminating need for external compensation. De-rated X7R capacitors are recommended to maintain effective capacitance under DC bias (Section 6.6, Page 17–18). Using smaller or non-ceramic caps may cause instability or excessive output ripple.
How does the thermal shutdown mechanism work in RAA2144054GQS#GA0, and what is its hysteresis?
RAA2144054GQS#GA0 disables output when junction temperature reaches +150°C (typ), entering thermal shutdown. It remains off until temperature falls to +130°C due to 20°C hysteresis - preventing rapid ON/OFF cycling during sustained overload. This behavior is specified in Electrical Specifications (Page 8, Thermal Shutdown row) and detailed in Section 6.4 (Page 17). Continuous operation above +125°C reduces long-term reliability.
Can RAA2144054GQS#GA0 be used with input voltages below its nominal 5V output, such as 4.5V?
No - RAA2144054GQS#GA0 requires a minimum input voltage of 4.5V (per Recommended Operating Conditions, Page 5), but regulation is only possible when VIN exceeds VOUT plus dropout voltage. At 100mA, dropout is 737mV typ, so VIN must be ≥5.74V for stable 5V output. Operation at 4.5V input would result in dropout and unregulated output - confirmed by Figure 13 (Dropout vs IOUT) and Equation 3 (Page 17).
RAA2144054GQS#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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.333V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 7.3 µA
- Current - Supply (Max):
- 231 µA
- PSRR:
- 74dB ~ 67dB (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
RAA2144054GQS#GA0 FAQ
1.How can I place an order for RAA2144054GQS#GA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for RAA2144054GQS#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 RAA2144054GQS#GA0 reliable?
The price and inventory of RAA2144054GQS#GA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RAA2144054GQS#GA0 is usually 5 days.
3.What payment methods are accepted for RAA2144054GQS#GA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RAA2144054GQS#GA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RAA2144054GQS#GA0?
RAA2144054GQS#GA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RAA2144054GQS#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 RAA2144054GQS#GA0?
For technical support, including RAA2144054GQS#GA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RAA2144054GQS#GA0 requirements.
6.How does Aetrix verify that RAA2144054GQS#GA0 is sourced from the original manufacturer or authorized distributors?
All RAA2144054GQS#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 RAA2144054GQS#GA0 meets industry standards.
7.What is the process for return or replacement of RAA2144054GQS#GA0?
All RAA2144054GQS#GA0 units undergo pre-shipment inspection (PSI). If there is an issue with RAA2144054GQS#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 RAA2144054GQS#GA0 part is unused and in its original packaging.
Return procedure for RAA2144054GQS#GA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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