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Texas Instruments LP591212MDRVREP
- Part No.:
- LP591212MDRVREP
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LP591212MDRVREP.pdf
- Description:
- ENHANCED-PRODUCT, 500-MA, LOW-NO
- Quantity:
- Payment:
- Shipping:
Inventory:2,794
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Product details
Overview
LP591212MDRVREP from Texas Instruments is an enhanced-product, 500-mA low-noise, low-IQ LDO regulator with 12 μVRMS output noise, 75 dB PSRR at 1 kHz, and 95 mV dropout (at 500 mA, VOUT ≥ 3.3 V). It operates from 1.6 V to 6.5 V input and delivers fixed 1.2 V output, supporting defense-grade applications including inertial navigation and GPS receivers.
For engineers reviewing the LP591212MDRVREP datasheet, LP591212MDRVREP pinout, LP591212MDRVREP application, or LP591212MDRVREP equivalent, this page provides verified electrical characteristics, thermal performance data, power-good timing, soft-start behavior, and validated alternative options for high-reliability analog/RF power domains.
Technical Context
The LP591212MDRVREP integrates a precision bandgap reference, error amplifier, and current-limited pass transistor in a thermally optimized WSON-6 package with exposed thermal pad. Its architecture enables stable regulation with only 1-μF ceramic input and output capacitors-no external noise bypass capacitor required.
It features a dedicated power-good (PG) output with 140-μs typical delay, internal 3-MΩ EN pulldown resistor, and 100-Ω output discharge resistance for fast turnoff. Thermal shutdown activates at 160°C with 15°C hysteresis, and reverse current protection prevents IN-to-OUT backflow when VOUT > VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 500 mA max - supports high-current analog/RF loads without external boost circuitry |
| Output noise | 12 μVRMS (10 Hz–100 kHz) - enables clean biasing of RF transceivers and ADCs without added filtering |
| PSRR @ 1 kHz | 75 dB typ - suppresses switching noise from upstream DC/DC converters in mixed-signal systems |
| Dropout voltage | 95 mV typ at 500 mA (VOUT = 1.2 V) - maintains regulation under tight input margins, e.g., single-cell LiFePO4 or aging batteries |
| Quiescent current | 30 μA typ (no load) - extends battery life in always-on surveillance or telemetry modules |
| Operating temp | –55°C to +125°C junction - qualified for extended-life aerospace, defense, and downhole industrial use |
| Power-good delay | 140 μs typ - provides deterministic system reset timing for FPGA or DSP power sequencing |
Pinout & Package
LP591212MDRVREP is housed in a 2.00 mm × 2.00 mm, 6-pin WSON package (DRV) with wettable flank and exposed thermal pad. The thermal pad must be connected to PCB ground plane via thermal vias for optimal thermal performance (RθJB = 40.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output | Delivers stable 1.2 V to load; requires 1-μF ceramic capacitor to GND for stability |
| 2: NC | No internal connection | Must remain unconnected or tied to GND; no electrical function |
| 3: PG | Power-good indicator | Open-drain output requiring external pullup; asserts high when VOUT ≥ 90% of nominal |
| 4: EN | Enable control | Logic-high active; internal 3-MΩ pulldown ensures default-off state during power-up |
| 5: GND | Ground reference | Primary return path for load, bias, and thermal pad; must be low-impedance plane |
| 6: IN | Unregulated input | Accepts 1.6 V–6.5 V; reverse-current protected if VOUT > VIN |
Key Features
| Feature | Design Value |
|---|---|
| Noise-bypass-capacitor-free operation | Enables compact layout in space-constrained modules (e.g., UAV IMUs) without sacrificing spectral purity |
| Output auto-discharge (100 Ω) | Ensures rapid VOUT decay (<1 ms) after disable, preventing hold-up in multi-rail sequencing |
| Stable with 1-μF CIN/COUT | Reduces BOM count and board area vs. legacy LDOs requiring ≥10-μF ceramics or tantalums |
| Thermal overload + short-circuit protection | Internally limits power dissipation and fault current without external circuitry-critical for unattended field deployments |
| Controlled baseline & traceability | Meets MIL-PRF-38535 requirements: single fab/test site, extended lifecycle, full lot traceability |
Applications
| Surveillance Systems | Inertial Navigation Units |
|---|---|
Use Scenario: Powering CMOS image sensors and low-noise amplifiers in persistent wide-area surveillance cameras. IC Role / Device Role / Timing Role: Primary 1.2 V supply for analog front-end and clock distribution ICs. Use Value: 12 μVRMS noise prevents spurious artifacts in high-dynamic-range imaging; 75 dB PSRR rejects switcher ripple from shared 5 V rail. | Use Scenario: Regulating power to MEMS gyroscopes and accelerometers in guided munitions and aircraft AHRS. 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 ensures functionality across extreme environmental profiles; 1.6 V min input supports brownout resilience. |
| Land Mobile Radios | GPS Receivers |
Use Scenario: Supplying RF transceiver ICs and baseband processors in ruggedized tactical radios. IC Role / Device Role / Timing Role: Clean 1.2 V domain for PLLs, synthesizers, and ADCs in SDR architectures. Use Value: 95 mV dropout preserves headroom during battery sag; power-good output synchronizes radio boot sequence. | Use Scenario: Powering GNSS baseband processors and correlator arrays in high-accuracy timing receivers. IC Role / Device Role / Timing Role: Ultra-low-noise core voltage regulator for time-to-digital converters and correlator logic. Use Value: 30 μA quiescent current minimizes standby drain in battery-backed PPS holdover; 140-μs PG delay aligns with GPS cold-start timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4701RGWR | 20 μVRMS noise, 1-A output, 3-V to 36-V input - higher noise performance but larger package (QFN-20) and no PG output | Suitable for ultra-low-noise audio or instrumentation; not drop-in due to pin count, footprint, and missing PG | Select when sub-20-μV noise is mandatory and board space allows QFN-20; verify sequencing without PG |
| LM34910QWGRQ1 | Switching regulator (buck), 1.5-A, 3.5-V to 42-V input - higher efficiency but introduces switching noise and EMI | Used where >85% efficiency is critical and noise can be filtered; lacks LDO-level transient response | Choose only if input voltage exceeds 6.5 V or thermal budget prohibits LDO losses; add LC filter for RF-sensitive loads |
Compared with TPS7A4701RGWR and LM34910QWGRQ1, LP591212MDRVREP offers guaranteed 12-μVRMS noise, integrated PG signaling, and military-grade reliability in a 2-mm WSON-making it uniquely suited for SWaP-constrained, noise-sensitive defense electronics where pin compatibility and qualification rigor are non-negotiable.
Availability
LP591212MDRVREP 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 ranges and long production lifecycles.
Supply support for LP591212MDRVREP 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 leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and aerospace markets.
The LP5912-EP product line delivers radiation-tolerant, temperature-hardened LDOs designed specifically for mission-critical defense, aerospace, and medical electronics where reliability, traceability, and extended lifecycle support are mandatory.
FAQ
What is the output voltage tolerance of the LP591212MDRVREP?
The LP591212MDRVREP has a fixed 1.2 V output with ±3% tolerance over temperature and load (–55°C to +125°C, 1 mA to 500 mA), per its specification for VOUT(NOM) < 3.3 V. This ensures predictable regulation in precision analog circuits without external feedback adjustment.
Does the LP591212MDRVREP require an external noise bypass capacitor?
No, the LP591212MDRVREP does not require an external noise bypass capacitor. Its internal design achieves 12 μVRMS output noise (10 Hz–100 kHz) with only a 1-μF ceramic output capacitor, simplifying layout and reducing component count in space-constrained designs.
How does the power-good (PG) output of the LP591212MDRVREP behave during startup?
The LP591212MDRVREP PG output asserts high after a typical 140-μs delay once VOUT reaches ≥90% of nominal (1.08 V). It remains high until VOUT falls below 86% (1.032 V), providing hysteresis to prevent chatter during marginal conditions-enabling reliable FPGA or microcontroller reset sequencing.
What thermal management is required for the LP591212MDRVREP at full 500-mA load?
At 500 mA and 1.2 V output with 3.3 V input, LP591212MDRVREP dissipates ~1.05 W. With RθJB = 40.0°C/W, a 4-layer PCB with 2 oz copper, thermal vias under the exposed pad, and ≥1 in² ground plane keeps junction temperature within the 125°C limit. Derating is required above 85°C ambient.
Is the LP591212MDRVREP pin-compatible with other members of the LP5912-EP family?
Yes, all LP5912-EP variants-including LP591212MDRVREP-share identical 6-pin WSON (DRV) packaging, pinout, and footprint. Only the output voltage differs (set by internal resistor divider); no PCB redesign is needed when swapping between 0.8 V–5.5 V fixed-output versions.
LP591212MDRVREP 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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)
LP591212MDRVREP FAQ
1.How can I place an order for LP591212MDRVREP through Aetrix?
Please submit a Request for Quotation (RFQ) for LP591212MDRVREP 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 LP591212MDRVREP reliable?
The price and inventory of LP591212MDRVREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP591212MDRVREP is usually 5 days.
3.What payment methods are accepted for LP591212MDRVREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP591212MDRVREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP591212MDRVREP?
LP591212MDRVREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP591212MDRVREP 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 LP591212MDRVREP?
For technical support, including LP591212MDRVREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP591212MDRVREP requirements.
6.How does Aetrix verify that LP591212MDRVREP is sourced from the original manufacturer or authorized distributors?
All LP591212MDRVREP 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 LP591212MDRVREP meets industry standards.
7.What is the process for return or replacement of LP591212MDRVREP?
All LP591212MDRVREP units undergo pre-shipment inspection (PSI). If there is an issue with LP591212MDRVREP, 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 LP591212MDRVREP part is unused and in its original packaging.
Return procedure for LP591212MDRVREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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