My Inquiry
My Account
Texas Instruments LP38692MPX-2.5/NOPB
- Part No.:
- LP38692MPX-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-261-5, TO-261AB
- Datasheet:
-
LP38692MPX-2.5/NOPB.pdf
- Description:
- IC REG LINEAR 2.5V 1A SOT223-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP38692MPX-2.5/NOPB from Texas Instruments is a 2.5 V fixed-output, 1-A low-dropout CMOS linear regulator in SOT-223 package, featuring 2.5% output accuracy at 25°C, 450 mV dropout at 1 A (VOUT = 5 V), enable control (VEN threshold 0.4 V min), and stable operation with 1-µF ceramic output capacitors. It serves as a precision power supply for core logic rails in portable computing and instrumentation.
For engineers reviewing the LP38692MPX-2.5/NOPB datasheet, LP38692MPX-2.5/NOPB pinout, LP38692MPX-2.5/NOPB application, or LP38692MPX-2.5/NOPB equivalent, key selection criteria include dropout voltage at 2.5 V output, EN pin logic thresholds across temperature, ground current vs load, thermal shutdown hysteresis, and compatibility with ultra-low-ESR ceramic capacitors without external compensation.
Technical Context
The LP38692MPX-2.5/NOPB uses a PMOS pass transistor to eliminate DC base drive current, enabling ground pin current of only 55 µA typical at full load. Its trimmed bandgap reference and feedback network deliver ±2.5% output tolerance over –40°C to 125°C, with line regulation of 0.03%/V and load regulation of 1.8 mV at 1 A.
It integrates foldback current limiting (450 mA at VIN–VOUT > 5 V; 1500 mA at < 4 V), thermal shutdown activation at 160°C with 10°C hysteresis, and operates stably with 1-µF input/output ceramic capacitors-no ESR requirements or external compensation needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2.5% at 25°C; maintains regulation across –40°C to 125°C junction range. |
| Max Output Current | 1 A continuous; limited by thermal design and dropout headroom-not current-source-limited. |
| Dropout Voltage | 800 mV max at 1 A and –40°C to 125°C; 80 mV typ at 0.1 A and 2.5 V output. |
| Quiescent Current | 55 µA typical at full load; drops to 1 µA in shutdown (VEN ≤ 0.4 V). |
| Enable Threshold | VEN(MIN) = 0.4 V (ensures turn-on); VEN(MAX) = 4 V (ensures turn-off at VIN = 10 V). |
| PSRR | 55 dB at 120 Hz with 1 Vp-p ripple; sufficient for post-regulation of switching converter outputs. |
| Thermal Shutdown | Activates at 160°C junction; hysteresis ensures recovery at ~150°C-prevents oscillation during overload. |
Pinout & Package
SOT-223 (NDC) 5-pin thermally enhanced package: 6.50 mm × 3.56 mm body, exposed thermal pad on bottom, rated for 68.5°C/W junction-to-ambient (high-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input supply connection | Accepts 2.7–10 V; must be decoupled with ≥1 µF ceramic capacitor near pin. |
| 2: GND | Power ground reference | Thermally connected to die; requires soldering to large copper plane for thermal performance. |
| 3: OUT | Regulated output | Delivers 2.5 V ±2.5%; stable with 1 µF ceramic capacitor-no ESR minimum required. |
| 4: SNS | Output voltage sense | WSON-only pin; not present on SOT-223 LP38692MPX-2.5/NOPB-omit in layout. |
| 5: EN | Enable control input | Active-high logic: <0.4 V disables (1 µA IQ), >1.8 V enables; no internal pullup/down-must be externally biased. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 450 mV typical at 1 A (5 V output); enables high-efficiency regulation even at low VIN–VOUT margins. |
| Ceramic-capacitor stability | Stable with 1-µF ceramic COUT-eliminates need for tantalum or aluminum electrolytics and associated ESR constraints. |
| Enable-controlled shutdown | Reduces quiescent current to 1 µA; supports system-level power sequencing and battery conservation. |
| Precision bandgap reference | Trimmed for ±2.5% output accuracy at 25°C and ±5% over full –40°C to 125°C range-suitable for ADC references and sensor biasing. |
| Integrated protection | Foldback current limiting + thermal shutdown with hysteresis-prevents damage during sustained overload or poor heatsinking. |
Applications
| Hard Disk Drive Power | Notebook Core Logic Rail |
|---|---|
Use Scenario: Supplies 2.5 V to HDD servo controller ICs requiring tight voltage tolerance and fast transient response during seek operations. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 2.5 V with <1.8 mV load regulation and 55 dB PSRR to reject noise from nearby switching regulators. Use Value: Enables reliable servo positioning under dynamic load changes-no output droop or instability with 1-µF ceramic output cap. |
Use Scenario: Powers DDR memory termination or chipset I/O rails in space-constrained notebook designs where thermal margin is limited. IC Role / Device Role / Timing Role: Low-thermal-resistance SOT-223 LDO providing 2.5 V with 68.5°C/W RθJA, supporting 1 A load at 70°C ambient without derating. Use Value: Eliminates need for heatsinks or airflow-reduces BOM count and PCB area versus TO-252 alternatives. |
| Battery-Powered Instrumentation | Portable Medical Sensor Module |
Use Scenario: Powers precision analog front-end (AFE) in handheld multimeters or data loggers operating from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Ultra-low-IQ LDO delivering 2.5 V reference rail with 55 µA ground current at full load-maximizes battery runtime. Use Value: Maintains ±2.5% accuracy across temperature and battery discharge curve-critical for calibrated measurements. |
Use Scenario: Supplies 2.5 V to low-noise op-amps and SAR ADCs in wearable ECG/SpO₂ modules where EMI immunity and low noise are essential. IC Role / Device Role / Timing Role: Low-noise (0.7 µV/√Hz) LDO with 55 dB ripple rejection-rejects switching noise from PMIC while minimizing added system noise floor. Use Value: Achieves <1 LSB error in 12-bit ADC conversions without additional filtering-reduces component count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850F0TESA1 | 500 mA max output; integrated watchdog and reset; 3.3 V fixed only-no 2.5 V variant. | Automotive AEC-Q100 qualified; includes system monitoring features absent in LP38692MPX-2.5/NOPB. | Select when functional safety (ASIL-B) or reset supervision is required; not drop-in for 1 A/2.5 V use cases. |
| TPS7A2025PDQNR | 2.5 V fixed; 300 mA max; 165 mV dropout at 300 mA; 6.5 µA IQ; DQN (2 × 2 mm WSON) package. | Lower power, smaller footprint; optimized for ultra-low-IQ wearables-not suitable for 1 A loads. | Choose for space-constrained, sub-300 mA applications where quiescent current <10 µA is critical. |
Compared with TLS850F0TESA1 and TPS7A2025PDQNR, LP38692MPX-2.5/NOPB uniquely balances 1 A capability, 2.5 V fixed output, SOT-223 thermal performance, and enable-controlled shutdown-making it optimal for industrial and portable systems needing robust, medium-current regulation without automotive qualification or ultra-miniaturization.
Availability
LP38692MPX-2.5/NOPB is available at Aetrix Electronics and suitable for hard disk drives, notebook computers, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LP38692MPX-2.5/NOPB 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 headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and personal electronics markets.
The LP38692MPX-2.5/NOPB belongs to TI's LP3869x family of low-dropout CMOS linear regulators, engineered specifically for portable, battery-powered digital systems demanding high accuracy, fast start-up, and ceramic-capacitor stability without external compensation.
FAQ
What is the maximum input voltage rating for LP38692MPX-2.5/NOPB?
The absolute maximum input voltage for LP38692MPX-2.5/NOPB is 12 V across all pins relative to GND. However, the recommended operating range is 2.7 V to 10 V. Exceeding 10 V may trigger internal protection or accelerate parametric drift; sustained operation above 10 V is not advised per TI's recommended conditions. The device remains functional within its specified electrical characteristics only up to 10 V input.
Does LP38692MPX-2.5/NOPB require an external resistor divider for output voltage setting?
No, LP38692MPX-2.5/NOPB is a fixed-output regulator with internally trimmed 2.5 V reference-no external resistors are needed or supported. Unlike adjustable variants (e.g., LP38692SD-ADJ), this part integrates the feedback network; attempting to modify the output via external components will disrupt regulation and void specifications.
Can LP38692MPX-2.5/NOPB operate with a 1-µF ceramic output capacitor?
Yes, LP38692MPX-2.5/NOPB is explicitly designed and characterized for stability with a single 1-µF ceramic output capacitor-no minimum ESR requirement or external compensation network is needed. This is confirmed in the datasheet's "Stable with Ceramic Output Capacitors" feature and Figure 31 typical application circuit.
What is the ground pin current behavior of LP38692MPX-2.5/NOPB under full load?
LP38692MPX-2.5/NOPB delivers 55 µA typical ground pin current at full 1 A load, independent of input voltage or temperature-enabled by its PMOS pass transistor architecture. This value rises to ≤100 µA maximum across –40°C to 125°C, ensuring minimal wasted current in battery-sensitive applications.
Is the EN pin of LP38692MPX-2.5/NOPB internally pulled up or down?
No, the EN pin of LP38692MPX-2.5/NOPB has no internal pull-up or pull-down resistor. It must be actively driven or passively terminated-e.g., tied to IN for always-on operation or connected to a microcontroller GPIO. Leaving EN floating may cause unpredictable enable/disable behavior due to noise susceptibility.
LP38692MPX-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-261-5, TO-261AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 55dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-5
LP38692MPX-2.5/NOPB FAQ
1.How can I place an order for LP38692MPX-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP38692MPX-2.5/NOPB 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 LP38692MPX-2.5/NOPB reliable?
The price and inventory of LP38692MPX-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP38692MPX-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LP38692MPX-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP38692MPX-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP38692MPX-2.5/NOPB?
LP38692MPX-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP38692MPX-2.5/NOPB 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 LP38692MPX-2.5/NOPB?
For technical support, including LP38692MPX-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP38692MPX-2.5/NOPB requirements.
6.How does Aetrix verify that LP38692MPX-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LP38692MPX-2.5/NOPB 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 LP38692MPX-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LP38692MPX-2.5/NOPB?
All LP38692MPX-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP38692MPX-2.5/NOPB, 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 LP38692MPX-2.5/NOPB part is unused and in its original packaging.
Return procedure for LP38692MPX-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP38692MPX-2.5/NOPB Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
