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STMicroelectronics E-L6932D2.5TR
- Part No.:
- E-L6932D2.5TR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
E-L6932D2.5TR.pdf
- Description:
- IC REG LINEAR 2.5V 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
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Product details
Overview
E-L6932D2.5TR from STMicroelectronics is a 2A ultra-low-dropout linear regulator with fixed 2.5V output, 2V–14V input range, 200mΩ max RDS(on), 1% voltage accuracy, and integrated enable and power-good functions-designed for chipset and RAM supply in mobile PC and handheld instruments.
For engineers reviewing the E-L6932D2.5TR datasheet, E-L6932D2.5TR pinout, E-L6932D2.5TR application, or E-L6932D2.5TR equivalent, key selection criteria include dropout performance at 2A, thermal behavior in SO-8 (4+4), PGOOD threshold hysteresis, load regulation under 2A step transients, and quiescent current stability across temperature.
Technical Context
The L6932D2.5TR integrates an internal 50mΩ N-channel MOSFET to achieve ultra-low dropout operation, enabling efficient 2.5V generation from inputs as low as 2V. Its error amplifier references a stable 1.25V bandgap and drives the pass transistor with charge-pump-assisted gate control.
Power-good detection uses an open-drain comparator monitoring VOUT against 90% of nominal output, with 10% hysteresis; thermal shutdown activates at 150°C with 20°C hysteresis, and current limiting is fixed at 2.5A ±8% via internal MOSFET current sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% (2.475V–2.525V) ensures stable I/O rail for DDR SDRAM and chipset logic. |
| Input Voltage Range | 2V to 14V supports direct battery or intermediate bus feeding without pre-regulation. |
| Max Output Current | 2A continuous delivery enables single-regulator supply for dual-core processor I/O domains. |
| RDS(on) | 200mΩ max guarantees ≤500mV dropout at 2.5A, critical for sub-3V input-to-2.5V conversion. |
| Quiescent Current | 200µA typical at any load minimizes standby power loss in always-on system rails. |
| Load Regulation | 15mV over 0.1A–2A load range maintains tight voltage control during CPU burst activity. |
| Line Regulation | 5mV over ±10% VIN variation ensures immunity to upstream DC/DC ripple or battery sag. |
| Thermal Shutdown | 150°C trip with 20°C hysteresis prevents latch-up during sustained high-power dissipation. |
Pinout & Package
Supplied in SO-8 (4+4) package - eight-pin surface-mount with four GND pins (pins 5–8) for enhanced thermal and electrical performance. Pin pitch: 1.27mm; body size: 4.9mm × 3.9mm × 1.75mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic: ≥0.65V enables regulator; <0.5V disables output and reduces Iq to 25µA. |
| 2 (IN) | Input supply | Connects to drain of internal N-MOSFET; requires ≥10µF input capacitance for stability. |
| 3 (ADJ) | Adjust reference (NC for fixed version) | No-connect on E-L6932D2.5TR; internally tied to 1.25V reference for fixed-output operation. |
| 4 (OUT) | Regulated output | Source of internal N-MOSFET; connects to ≥10µF output capacitor for transient response. |
| 5–8 (GND) | Ground return | Four parallel ground terminals reduce impedance and improve thermal conduction to PCB copper. |
| - (PGOOD) | Power-good indicator | Open-drain output pulled low when VOUT < 90% of 2.5V; requires external pull-up for system sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RDS(on) | 200mΩ max enables <500mV dropout at full 2A load-critical for 2.5V rail from 3.3V or Li-ion sources. |
| Integrated PGOOD | Open-drain output with 10% hysteresis provides reliable power sequencing signal for FPGA or SoC reset management. |
| Thermal protection | 150°C shutdown with 20°C hysteresis prevents cumulative overheating in compact handheld PCB layouts. |
| Low-noise operation | 75dB ripple rejection at 120Hz suppresses switching noise from upstream DC/DC converters feeding the input. |
| High-current limit accuracy | 2.5A ±8% current limit ensures predictable short-circuit behavior without external sensing components. |
Applications
| Mobile PC Core Logic Supply | Handheld Instrument I/O Rail |
|---|---|
Use Scenario: Powering Intel Atom or ARM-based SoC I/O rings and memory interfaces in fanless notebooks. IC Role / Device Role / Timing Role: Primary 2.5V LDO delivering clean, low-noise voltage to DDR2/DDR3 interface circuitry. Use Value: 1% output accuracy and 15mV load regulation maintain signal integrity during rapid CPU state transitions. | Use Scenario: Supplying analog front-end and microcontroller peripherals in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Stable 2.5V reference and digital rail generator supporting precision ADC bias and SPI/I²C logic levels. Use Value: 200µA quiescent current extends battery life in sleep mode; SO-8 (4+4) aids thermal management in sealed enclosures. |
| PCMCIA Card Power Management | Chipset Voltage Regulation |
Use Scenario: Providing hot-plug compatible 2.5V power to Type II PCMCIA cards in industrial laptops. IC Role / Device Role / Timing Role: Enable-controlled LDO with fast turn-on and PGOOD assertion for card enumeration timing. Use Value: EN pin allows software-controlled power gating; PGOOD enables safe card initialization before host access. | Use Scenario: Regulating 2.5V for northbridge/southbridge I/O buffers and PCIe root complex logic. IC Role / Device Role / Timing Role: High-current, low-dropout LDO decoupling chipset from noisy main 3.3V rail. Use Value: 200mΩ RDS(on) and 5mV line regulation prevent voltage droop during PCIe link training bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS7A4700RGWR | 20V input, 1A max, 4µVRMS noise, adjustable only; no PGOOD or EN. | Lacks enable and power-good-requires external sequencing logic for complex systems. | Select if ultra-low noise is prioritized over integration and current capability. |
| Analog Devices ADP1740ACPZ-2.5-R7 | 2A, 2.5V fixed, 150mΩ RDS(on), but no PGOOD; thermal shutdown at 160°C (no hysteresis). | Missing PGOOD complicates FPGA power sequencing; higher thermal trip reduces margin in thermally constrained designs. | Choose only when board space prohibits adding discrete PGOOD logic and thermal headroom exceeds 10°C. |
Compared with TPS7A4700RGWR and ADP1740ACPZ-2.5-R7, E-L6932D2.5TR uniquely combines 2A capability, integrated PGOOD with hysteresis, enable control, and SO-8 (4+4) thermal design-making it optimal for space-constrained, sequenced multi-rail embedded systems requiring robust fault signaling.
Availability
E-L6932D2.5TR is available at Aetrix Electronics and suitable for mobile PC core logic supply, handheld instrument I/O rail, and PCMCIA card power management requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for E-L6932D2.5TR 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, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.
The L6932 series targets high-current, low-dropout point-of-load regulation in portable and space-constrained systems-emphasizing thermal efficiency, integration of enable/PGOOD, and compatibility with Li-ion and intermediate bus architectures.
FAQ
What is the minimum input voltage required for 2.5V output at 2A?
The L6932D2.5TR supports operation down to 2V input. At 2A load, the maximum dropout is 500mV (200mΩ × 2.5A current limit), so 3.0V input ensures regulation. For guaranteed 2.5V output at full 2A, VIN must be ≥3.0V per datasheet test conditions and thermal limits.
Does E-L6932D2.5TR require external compensation components?
No-E-L6932D2.5TR is internally compensated for use with standard 10µF tantalum or polymer output capacitors. Ceramic capacitors may require a 1–10nF capacitor in parallel with the upper divider resistor (not applicable here, as ADJ is NC), per ST's loop stability guidance in section 7.
How does the PGOOD function behave during startup and fault conditions?
PGOOD asserts high (open-drain pulled up externally) only after VOUT reaches ≥90% of 2.5V (≥2.25V) and remains stable. It pulls low if VOUT drops below that threshold or during thermal shutdown or current-limit foldback-providing unambiguous system power status.
Can E-L6932D2.5TR be used in parallel for higher current?
No-L6932D2.5TR lacks current-sharing features like current-sense outputs or master/slave sync. Parallel connection risks thermal imbalance and instability due to mismatched RDS(on) and load regulation. For >2A, select a higher-current LDO or switcher solution.
E-L6932D2.5TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 14V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- 400 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
E-L6932D2.5TR FAQ
1.How can I place an order for E-L6932D2.5TR through Aetrix?
Please submit a Request for Quotation (RFQ) for E-L6932D2.5TR 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 E-L6932D2.5TR reliable?
The price and inventory of E-L6932D2.5TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6932D2.5TR is usually 5 days.
3.What payment methods are accepted for E-L6932D2.5TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6932D2.5TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for E-L6932D2.5TR?
E-L6932D2.5TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your E-L6932D2.5TR 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 E-L6932D2.5TR?
For technical support, including E-L6932D2.5TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6932D2.5TR requirements.
6.How does Aetrix verify that E-L6932D2.5TR is sourced from the original manufacturer or authorized distributors?
All E-L6932D2.5TR 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 E-L6932D2.5TR meets industry standards.
7.What is the process for return or replacement of E-L6932D2.5TR?
All E-L6932D2.5TR units undergo pre-shipment inspection (PSI). If there is an issue with E-L6932D2.5TR, 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 E-L6932D2.5TR part is unused and in its original packaging.
Return procedure for E-L6932D2.5TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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