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STMicroelectronics STLQ015XG25R
- Part No.:
- STLQ015XG25R
- Manufacturer:
- STMicroelectronics
- Package:
- SOT-563, SOT-666
- Datasheet:
-
STLQ015XG25R.pdf
- Description:
- IC REG LINEAR 2.5V 150MA SOT666
- Quantity:
- Payment:
- Shipping:
Inventory:2,616
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Product details
Overview
STLQ015XG25R from STMicroelectronics is a 150 mA ultra-low-quiescent-current linear voltage regulator in SOT23-5L package, delivering 2.5 V output with ±2% tolerance at 25 °C, 112 mV typical dropout at 150 mA, and 1.4 µA quiescent current under full load - designed for microcontroller core supply and sensor biasing in battery-constrained systems.
For engineers reviewing the STLQ015XG25R datasheet, STLQ015XG25R pinout, STLQ015XG25R application, or STLQ015XG25R equivalent, key selection criteria include shutdown current (≤200 nA at 125 °C), ceramic capacitor compatibility (1 µF min), logic-controlled enable, thermal protection, and operation across –40 °C to 125 °C junction temperature.
Technical Context
The STLQ015XG25R implements a P-channel MOSFET pass element with internal current limiting and thermal shutdown at 170 °C (15 °C hysteresis). Its enable input accepts TTL/CMOS-compatible logic levels (VEN low ≤0.4 V, high ≥0.7×VIN) and drives the regulator into sub-1 nA OFF-mode current.
Stability is guaranteed with 0.47–10 µF ceramic output capacitors (ESR 0.056–6 Ω); line regulation is ±0.01 %/V and load regulation ±0.002 %/mA, supporting precision low-power rail generation without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 2.5 V ±2% at 25 °C - ensures stable MCU I/O or sensor reference rail within tight tolerance |
| Quiescent current | 1.4 µA (typ.) at 150 mA load - extends battery life in always-on monitoring nodes |
| Shutdown current | 1 nA (typ.) at 25 °C; 200 nA max at 125 °C - enables multi-year shelf life in sealed IoT devices |
| Dropout voltage | 112 mV (typ.) at 150 mA - supports operation down to 2.612 V input for 2.5 V output |
| Input voltage range | 1.5 V to 5.5 V - compatible with single-cell Li-ion, LiFePO₄, and dual-cell alkaline sources |
| Thermal shutdown | 170 °C with 15 °C hysteresis - prevents latch-up during transient overloads in compact PCB layouts |
| Output noise | 75 µVRMS (10–100 kHz) - suitable for analog sensor front-ends without additional filtering |
Pinout & Package
SOT23-5L package: 5-pin surface-mount, 2.95 mm × 1.60 mm footprint, 0.95 mm pitch, 1.45 mm height, ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 1.5–5.5 V DC; requires local 1 µF ceramic decoupling |
| 2 GND | Power ground | Common return path for input, output, and enable; must be low-impedance |
| 3 EN | Enable control input | Active-high logic: <0.4 V = OFF (1 nA), >0.7×VIN = ON; no pull-up required |
| 4 NC | No connection | Internally unconnected; leave floating or tie to GND per layout best practice |
| 5 OUT | Regulated output | Delivers 2.5 V ±2% to load; stable with 1 µF ceramic capacitor (0.47–10 µF supported) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 1.4 µA at full 150 mA load enables >10-year battery life in 10 µA average-current applications |
| Logic-controlled shutdown | EN pin reduces total system current to ≤200 nA at 125 °C, critical for automotive cabin sensors |
| Ceramic capacitor stability | Guaranteed stability with 1 µF X7R/X5R ceramic output cap - eliminates tantalum cost and failure risk |
| Integrated protection | Current limit (250–350 mA) and thermal shutdown (170 °C) prevent damage during short-circuit or overload |
| Wide temperature range | Specified from –40 °C to 125 °C junction temperature - qualified for industrial and automotive under-hood use |
Applications
| Wearable Health Monitor | Smart Meter Sensor Node |
|---|---|
Use Scenario: Continuous ECG signal acquisition powered by coin-cell battery. IC Role / Device Role / Timing Role: Supplies clean 2.5 V bias to analog front-end and ADC reference. Use Value: 1.4 µA quiescent current enables >5-year operation on CR2032; 75 µVRMS noise avoids signal degradation. | Use Scenario: Tamper-detection circuit in gas/water meter with 10-year battery warranty. IC Role / Device Role / Timing Role: Powers real-time clock and Hall-effect flow sensor during sleep mode. Use Value: 1 nA shutdown current preserves battery capacity over decade-long deployment; EN pin enables wake-on-event. |
| Industrial Wireless Sensor | Automotive Cabin Occupancy Module |
Use Scenario: LoRaWAN node measuring temperature/humidity in remote factory zones. IC Role / Device Role / Timing Role: Provides regulated 2.5 V to MCU and RF transceiver during transmit bursts. Use Value: 112 mV dropout allows operation down to 2.61 V input - maximizes usable voltage from aging primary cells. | Use Scenario: Seat occupancy detection using capacitive sensing in vehicle cabin. IC Role / Device Role / Timing Role: Powers capacitive sense controller and signal conditioning circuitry. Use Value: –40 °C to 125 °C rating ensures reliability across extreme ambient conditions; thermal shutdown prevents fault propagation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P252MR | 2.5 V fixed, 150 mA, IQ = 1 µA (typ.), SOT23-5, no EN pin | Lacks logic-controlled shutdown - requires external FET or system-level power gating | Select when EN functionality is unnecessary and lowest possible IQ is prioritized |
| Micrel MIC5205-2.5YM5 | 2.5 V fixed, 150 mA, IQ = 18 µA (typ.), SOT23-5, EN pin, higher noise (120 µVRMS) | Higher quiescent current reduces battery lifetime by ~12× vs. STLQ015XG25R | Select when legacy qualification or alternate supply chain is required, accepting IQ trade-off |
Compared with XC6206P252MR and MIC5205-2.5YM5, STLQ015XG25R uniquely combines sub-2 µA IQ, integrated EN, and 75 µVRMS noise - making it optimal for multi-year battery-powered sensing where both shutdown control and analog integrity are mandatory.
Availability
STLQ015XG25R is available at Aetrix Electronics and suitable for wearable health monitors, smart meter sensor nodes, industrial wireless sensors, and automotive cabin occupancy modules requiring stable component supply across extended product lifecycles.
Supply support for STLQ015XG25R 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing products for automotive, industrial, and consumer markets with emphasis on energy efficiency and reliability.
The STLQ015 series belongs to ST's ultra-low-power linear regulator product line, engineered specifically for battery-operated equipment demanding nanoscale shutdown current and long-term operational stability without compromising output accuracy or transient response.
FAQ
What is the minimum input voltage required to maintain 2.5 V output at 150 mA load?
The STLQ015XG25R requires VIN ≥ VOUT + VDROP = 2.5 V + 0.112 V = 2.612 V (typical) to sustain regulation at full load. At worst-case 300 mV dropout (–40 °C to 125 °C), minimum input is 2.8 V. Below this, output collapses linearly with input.
Can STLQ015XG25R operate with a 0.47 µF ceramic output capacitor?
No - the datasheet specifies a minimum of 0.47 µF but guarantees stability only with 1 µF (X7R/X5R) or higher. Using 0.47 µF risks oscillation due to insufficient phase margin; 1 µF is the validated design point for all operating conditions.
Is the NC pin (Pin 4) required to be grounded or left floating?
Pin 4 is internally unconnected and must be left floating per ST's layout guidance. Grounding it may introduce parasitic coupling or violate package stress specifications; no electrical benefit or requirement exists for connection.
Does STLQ015XG25R support adjustable output voltage via external resistors?
No - STLQ015XG25R is a fixed 2.5 V output device. The "XG" suffix denotes the SOT23-5L package with 2.5 V trim; ST offers no adjustable variant in this family. Output voltage is laser-trimmed during production and not user-configurable.
STLQ015XG25R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 2.4 µA
- Current - Supply (Max):
- -
- PSRR:
- 40dB ~ 15dB (1kHz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-666
STLQ015XG25R FAQ
1.How can I place an order for STLQ015XG25R through Aetrix?
Please submit a Request for Quotation (RFQ) for STLQ015XG25R 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 STLQ015XG25R reliable?
The price and inventory of STLQ015XG25R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STLQ015XG25R is usually 5 days.
3.What payment methods are accepted for STLQ015XG25R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STLQ015XG25R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STLQ015XG25R?
STLQ015XG25R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STLQ015XG25R 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 STLQ015XG25R?
For technical support, including STLQ015XG25R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STLQ015XG25R requirements.
6.How does Aetrix verify that STLQ015XG25R is sourced from the original manufacturer or authorized distributors?
All STLQ015XG25R 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 STLQ015XG25R meets industry standards.
7.What is the process for return or replacement of STLQ015XG25R?
All STLQ015XG25R units undergo pre-shipment inspection (PSI). If there is an issue with STLQ015XG25R, 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 STLQ015XG25R part is unused and in its original packaging.
Return procedure for STLQ015XG25R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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