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Texas Instruments LP591225MDRVREP
- Part No.:
- LP591225MDRVREP
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LP591225MDRVREP.pdf
- Description:
- ENHANCED-PRODUCT, 500-MA, LOW-NO
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
LP591225MDRVREP from Texas Instruments is an enhanced-product-grade, 500-mA low-dropout linear regulator optimized for RF and analog circuits. It delivers 2.5 V output with ±2% tolerance at ≥3.3 V nominal (confirmed for 2.5 V), operates from 1.6 V to 6.5 V input, achieves 12 μVRMS output noise, 75 dB PSRR at 1 kHz, and 95 mV dropout at 500 mA - enabling clean power in GPS receivers and inertial navigation systems.
For engineers reviewing the LP591225MDRVREP datasheet, LP591225MDRVREP pinout, LP591225MDRVREP application, or LP591225MDRVREP equivalent, this page provides verified electrical specifications, thermal performance data, EN/PG logic thresholds, output discharge behavior, and fixed-voltage LDO selection guidance for defense-qualified designs requiring -55°C to +125°C operation and controlled baseline manufacturing.
Technical Context
The LP591225MDRVREP implements a precision bandgap reference and error amplifier driving a PMOS pass transistor, enabling ultra-low quiescent current (30 μA typ) and fast load transient response without external compensation. Its architecture integrates reverse-current protection, thermal shutdown with 160°C trip and 15°C hysteresis, and internal soft-start to limit inrush current during enable.
It features a dedicated power-good (PG) output with 140-μs typical delay, 86–93% VOUT threshold hysteresis, and open-drain configuration requiring external pullup. The device supports remote output capacitor placement and stable operation with only 1-μF ceramic input and output capacitors - eliminating need for noise-bypass caps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.5 V ±2% (VOUT ≥ 3.3 V spec applies; confirmed 2.5 V variant per TI orderable addendum) |
| Max output current | 500 mA continuous - sufficient for powering RF transceivers and precision ADCs |
| Output noise | 12 μVRMS (10 Hz–100 kHz) - enables direct use in LNA and PLL supply rails |
| PSRR @ 1 kHz | 75 dB typical - suppresses switching noise from upstream DC/DC converters |
| Dropout voltage | 95 mV typical at 500 mA (for VOUT ≥ 3.3 V); 250 mV max at 500 mA for 2.5 V output per datasheet interpolation |
| Quiescent current | 30 μA typical (enabled, no load) - extends battery life in always-on surveillance systems |
| Operating temp | -55°C to +125°C junction - qualified for aerospace, defense, and downhole industrial use |
Pinout & Package
LP591225MDRVREP is housed in a thermally enhanced 6-pin WSON package (DRV), 2.00 mm × 2.00 mm body size, with exposed thermal pad connected to GND for optimal heat dissipation (RθJB = 40.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers stable 2.5 V; requires 1-μF ceramic capacitor; supports remote placement |
| 2 - NC | No internal connection | Must be left floating or tied to GND; no electrical function |
| 3 - PG | Power-good indicator | Open-drain output; asserts high after 140-μs delay when VOUT reaches 86–93% of 2.5 V |
| 4 - EN | Enable control | Logic-high >1.35 V enables regulator; internal 3-MΩ pulldown ensures default-off state |
| 5 - GND | Ground reference | Primary return path; thermal pad must connect to PCB ground plane via vias |
| 6 - IN | Unregulated input | Accepts 1.6 V–6.5 V; requires 1-μF ceramic input cap adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Noise-bypass capacitor elimination | 12 μVRMS noise achieved without external bypass cap - reduces BOM count and board area |
| Output auto-discharge | 100-Ω internal pulldown (RAD) discharges OUT rapidly on disable - prevents backfeeding and enables fast system reset |
| Reverse current protection | Blocks current flow from OUT to IN when VOUT > VIN - protects upstream supplies during power sequencing |
| Thermal overload protection | 160°C shutdown with 15°C hysteresis - prevents permanent damage under sustained overload or poor airflow |
| Enhanced product qualification | Controlled baseline, single fab/test site, extended lifecycle, and full traceability - meets MIL-PRF-38535 requirements |
Applications
| Surveillance Systems | Inertial Navigation |
|---|---|
Use Scenario: Powering image signal processors and low-noise amplifiers in ruggedized UAV payloads. IC Role / Device Role / Timing Role: Primary 2.5 V analog rail regulator supplying ADCs and RF front-ends. Use Value: 12 μVRMS noise and 75 dB PSRR prevent spurious tones in video capture and RF receive paths. | Use Scenario: Supplying MEMS gyroscopes and accelerometers in guided munitions and autonomous vehicles. IC Role / Device Role / Timing Role: Low-drift, low-noise bias source for precision sensor signal chains. Use Value: -55°C to +125°C operation and enhanced-product traceability ensure reliability across extreme environmental profiles. |
| Land Mobile Radios | GPS Receivers |
Use Scenario: Providing clean 2.5 V supply to SDR baseband processors and RF synthesizers in tactical radios. IC Role / Device Role / Timing Role: Post-regulator for noise-sensitive digital and analog sections. Use Value: 95 mV dropout enables operation from partially discharged Li-ion cells while maintaining regulation. | Use Scenario: Delivering stable 2.5 V to GNSS RFICs and correlator ASICs in handheld and vehicle-mounted receivers. IC Role / Device Role / Timing Role: Dedicated LDO for RF section to isolate switching noise from DC/DC converters. Use Value: 140-μs PG delay synchronizes power-up sequencing with baseband controller boot timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LPGQDRQ1 | 7-channel high-side driver with integrated 200-mA LDO; not a standalone 500-mA LDO | Designed for automotive LED matrix control, not RF/analog power | Select LP591225MDRVREP for single-rail, high-PSRR, low-noise 500-mA regulation; TPL7407LPGQDRQ1 only if multi-channel driver + auxiliary LDO needed |
| TPS7A2025PDQNR | 250-mA, 2.5 V fixed-output LDO; 6.5-μVRMS noise, 70 dB PSRR @ 1 kHz, -40°C to +125°C | Commercial temperature grade; lacks EP qualification, traceability, and extended lifecycle support | Choose LP591225MDRVREP for defense/aerospace programs requiring MIL-PRF-38535 compliance; TPS7A2025PDQNR for cost-sensitive industrial designs |
Compared with TPS7A2025PDQNR, LP591225MDRVREP delivers double the output current, lower noise, higher PSRR, and full enhanced-product qualification - making it suitable for mission-critical RF systems where reliability and specification margin are non-negotiable.
Availability
LP591225MDRVREP is available at Aetrix Electronics and suitable for surveillance systems, inertial navigation units, land mobile radios, and GPS receivers requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for LP591225MDRVREP 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in power management ICs and high-reliability components.
The LP5912-EP product line delivers radiation-tolerant, temperature-hardened LDOs designed specifically for defense, aerospace, and medical applications demanding controlled manufacturing, full traceability, and guaranteed long-term availability.
FAQ
What is the output voltage tolerance of LP591225MDRVREP?
The LP591225MDRVREP has a fixed 2.5 V output with ±2% tolerance, consistent with the datasheet specification for VOUT ≥ 3.3 V variants and confirmed for the 2.5 V option in TI's orderable documentation. This tolerance holds across the full operating temperature range (-55°C to +125°C) and 1 mA to 500 mA load current.
Does LP591225MDRVREP require an external noise-bypass capacitor?
No, LP591225MDRVREP does not require an external noise-bypass capacitor. Its 12 μVRMS output noise (10 Hz–100 kHz) is achieved using only a 1-μF ceramic output capacitor, as validated in the datasheet. This eliminates BOM cost and layout complexity associated with traditional low-noise LDOs.
What is the purpose of the PG pin on LP591225MDRVREP?
The PG (power-good) pin on LP591225MDRVREP is an open-drain output that signals when the regulated 2.5 V output has stabilized within 86–93% of nominal. It features a fixed 140-μs typical delay and requires an external pullup resistor. This allows precise power sequencing control in multi-rail systems.
How does LP591225MDRVREP handle reverse current conditions?
LP591225MDRVREP includes integrated reverse current protection (IRO), which blocks current flow from the OUT pin to the IN pin when VOUT exceeds VIN. This prevents backfeeding into upstream supplies during power-down or fault conditions, ensuring safe operation in complex power architectures.
Is LP591225MDRVREP compatible with standard 1-μF ceramic capacitors?
Yes, LP591225MDRVREP is fully stable with 1-μF ceramic input and output capacitors, as specified in Section 6.6 of the datasheet. It supports X5R/X7R dielectrics with ESR between 5 mΩ and 500 mΩ, eliminating the need for larger or specialized capacitors.
LP591225MDRVREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 600 µA
- PSRR:
- 80dB ~ 40dB (100Hz ~ 100kHz)
- Control Features:
- Current Limit, Enable, Power Good, Soft Start
- Protection Features:
- Over Current, Over Temperature, Reverse Current, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
LP591225MDRVREP FAQ
1.How can I place an order for LP591225MDRVREP through Aetrix?
Please submit a Request for Quotation (RFQ) for LP591225MDRVREP 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 LP591225MDRVREP reliable?
The price and inventory of LP591225MDRVREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP591225MDRVREP is usually 5 days.
3.What payment methods are accepted for LP591225MDRVREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP591225MDRVREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP591225MDRVREP?
LP591225MDRVREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP591225MDRVREP 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 LP591225MDRVREP?
For technical support, including LP591225MDRVREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP591225MDRVREP requirements.
6.How does Aetrix verify that LP591225MDRVREP is sourced from the original manufacturer or authorized distributors?
All LP591225MDRVREP 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 LP591225MDRVREP meets industry standards.
7.What is the process for return or replacement of LP591225MDRVREP?
All LP591225MDRVREP units undergo pre-shipment inspection (PSI). If there is an issue with LP591225MDRVREP, 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 LP591225MDRVREP part is unused and in its original packaging.
Return procedure for LP591225MDRVREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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