My Inquiry
My Account
STMicroelectronics LE80ABD-TR
- Part No.:
- LE80ABD-TR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LE80ABD-TR.pdf
- Description:
- IC REG LINEAR 8V 100MA 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,969
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LE80ABD-TR from STMicroelectronics is a very low dropout (LDO) linear voltage regulator delivering 8.0 V output at up to 100 mA, with 0.2 V typical dropout at full load, 50 µA quiescent current in OFF mode, ±1% output voltage accuracy at 25 °C, and TTL-compatible inhibit control. It serves as a precision local power supply in battery-powered instrumentation and low-noise sensor subsystems requiring stable 8 V bias under variable input conditions.
For engineers reviewing the LE80ABD-TR datasheet, LE80ABD-TR pinout, LE80ABD-TR application, or LE80ABD-TR equivalent, key selection criteria include dropout performance at 100 mA, shutdown logic compatibility, thermal resistance in SO-8 package, stability with 2.2 µF ceramic output capacitor, and operation across –40 to 125 °C junction temperature range.
Technical Context
This device integrates an internal current and thermal limit, operates from 2.5 V to 18 V input, and maintains regulation down to 0.5 V headroom at 100 mA over full temperature range. Its inhibit pin (Pin 5) enables TTL-level ON/OFF control without external circuitry.
The SO-8 package features internally connected pins 2, 3, 6, and 7 to the die attach flag for enhanced thermal dissipation (RthJA = 55 °C/W), while requiring only a 2.2 µF output capacitor with 0.1–10 Ω ESR for stability-reducing board area and BOM cost versus legacy regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.0 V ±1% at 25 °C - ensures precise biasing for analog front-ends and reference circuits |
| Dropout Voltage | 0.2 V typ. @ 100 mA - enables operation from 8.2 V input, critical for single-cell LiFePO₄ or dual-cell alkaline systems |
| Quiescent Current | 50 µA in OFF mode, 0.5 mA in ON mode (no load) - extends battery life in always-on monitoring nodes |
| Supply Voltage Rejection | 80 dB typ. @ 120 Hz - suppresses ripple from noisy DC-DC pre-regulators feeding sensitive analog stages |
| Operating Temperature | –40 to 125 °C junction - supports under-hood automotive sensors and industrial motor control PCBs |
| Stability Capacitor | 2.2 µF ceramic (ESR 0.1–10 Ω) - eliminates need for tantalum or large electrolytic capacitors, reducing footprint and cost |
| Logic Inhibit Input | TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 2.0 V) - interfaces directly with microcontroller GPIO without level-shifting |
Pinout & Package
LE80ABD-TR is housed in an SO-8 package with exposed die attach flag (pins 2, 3, 6, 7 internally tied) for improved thermal performance. Pin 5 is the TTL-compatible inhibit input; floating defaults to ON, but grounding is recommended when unused to prevent noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VOUT | Regulated 8.0 V output; connects to load and 2.2 µF bypass capacitor |
| Pin 2 | GND | Power ground; electrically tied to die flag for low-impedance thermal path |
| Pin 3 | VIN | Input supply (2.5–18 V); requires local 0.1 µF ceramic decoupling |
| Pin 4 | GND | Second ground terminal; tied to pin 2 and die flag for reduced ground loop inductance |
| Pin 5 | INHIBIT | TTL-level shutdown control: <0.8 V = OFF (50 µA IQ), >2.0 V = ON |
| Pin 6 | GND | Third ground terminal; part of shared die flag connection for thermal conduction |
| Pin 7 | GND | Fourth ground terminal; enhances PCB copper pour heat spreading capability |
| Pin 8 | VIN | Secondary input connection; tied internally to pin 3 for parallel current handling and lower impedance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 0.2 V typical at 100 mA enables use with minimal input headroom in space-constrained battery systems |
| Low-noise operation | 50 µV RMS output noise (10 Hz–100 kHz) supports high-resolution ADCs and precision op-amps |
| Thermal-enhanced SO-8 | RthJA = 55 °C/W with PCB copper pour - sustains 100 mA continuous output at 85 °C ambient |
| Pin-to-pin compatible | Direct replacement for L78L80 in SO-8 layout, enabling drop-in upgrade to lower dropout and shutdown capability |
| Robust protection | Internal current limiting and thermal shutdown prevent damage during short-circuit or overload events |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
|
Use Scenario: Powering MEMS pressure and humidity sensors in HVAC control modules where input voltage varies between 9–16 V (ignition on/off). IC Role / Device Role / Timing Role: Local 8 V LDO providing clean, regulated bias independent of engine cranking dips or alternator ripple. Use Value: 0.2 V dropout ensures uninterrupted operation down to 8.2 V input; 80 dB SVR rejects alternator switching noise. |
Use Scenario: Supplying 8 V to analog front-end amplifiers and 24-bit delta-sigma ADCs in handheld ECG devices powered by two AA cells. IC Role / Device Role / Timing Role: Precision voltage source maintaining signal chain accuracy while minimizing battery drain during standby. Use Value: 50 µA OFF-mode current extends battery life beyond 6 months; ±1% tolerance avoids calibration drift. |
| Industrial PLC I/O Modules | Smart Meter Analog Subsystems |
|
Use Scenario: Regulating 8 V for isolated current-loop transmitters operating in harsh factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: High-reliability local regulator supporting –40 to 125 °C junction operation and immune to EMI-induced latch-up. Use Value: Internal thermal shutdown prevents failure during prolonged overloads; SO-8 thermal design sustains 100 mA at 100 °C ambient. |
Use Scenario: Providing stable 8 V reference for metrology-grade voltage and current measurement circuits in ANSI C12.20-compliant electricity meters. IC Role / Device Role / Timing Role: Low-noise, low-drift power rail ensuring <0.1% gain error over temperature and time. Use Value: 50 µV RMS noise and ±1% initial accuracy meet Class 0.2 metering requirements without post-calibration trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LDL112M80R | 8 V output, 200 mA rating, 0.35 V dropout @ 200 mA, no inhibit pin, SOT-23-5 package | Lacks shutdown control; smaller footprint but higher thermal resistance (RthJA = 200 °C/W) | Select when higher output current is needed and board space is constrained, but system-level power sequencing is handled externally |
| TLV70780PDQNR | 8 V output, 300 mA rating, 0.22 V dropout @ 300 mA, active-low enable, X2SON-4 package | Lower quiescent current (25 µA OFF), but only 2.5 V min input and no thermal flag for high-power dissipation | Prefer for ultra-low-power IoT endpoints with tight input voltage windows, but avoid in high-ambient or high-current scenarios |
Compared with LDL112M80R and TLV70780PDQNR, LE80ABD-TR uniquely balances 100 mA capability, ultra-low dropout, integrated thermal enhancement via SO-8 flag, and TTL-compatible inhibit-making it optimal for industrial and automotive applications demanding robustness, precision, and controllability in one package.
Availability
LE80ABD-TR is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, industrial PLC I/O modules, and smart meter analog subsystems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LE80ABD-TR 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 specializing in power management, analog, and microcontroller solutions for automotive, industrial, and consumer markets.
LE80ABD-TR belongs to the LExxAB series of very low-dropout regulators designed specifically for battery-powered and noise-sensitive applications where efficiency, precision, and thermal resilience are critical.
FAQ
What is the minimum input voltage required for LE80ABD-TR to maintain 8 V output at 100 mA?
The minimum input voltage is 8.2 V, based on the typical 0.2 V dropout voltage at 100 mA load. At worst-case conditions (–40 to 125 °C), dropout rises to 0.5 V, requiring ≥8.5 V input for guaranteed regulation. Input must remain within absolute maximum rating of 20 V DC.
Can LE80ABD-TR be used without connecting the INHIBIT pin?
Yes - leaving INHIBIT (Pin 5) unconnected places the device in permanent ON mode. However, STMicroelectronics recommends grounding this pin when not used to prevent noise-induced false shutdowns, especially in electrically noisy environments like automotive or industrial settings.
Is a 2.2 µF ceramic capacitor sufficient for stability across all load conditions?
Yes - the datasheet specifies stability with a 2.2 µF ceramic output capacitor having ESR between 0.1 Ω and 10 Ω, valid for loads from 0 to 100 mA. No additional compensation or feedforward capacitor is required, simplifying layout and reducing component count.
How does the SO-8 thermal design differ from standard SO-8 packages?
LE80ABD-TR uses a modified SO-8 with pins 2, 3, 6, and 7 internally bonded to the die attach flag, lowering thermal resistance to 20 °C/W junction-to-case and 55 °C/W junction-to-ambient (with PCB copper pour). This allows sustained 100 mA output at higher ambient temperatures than standard SO-8 regulators.
LE80ABD-TR 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):
- 18V
- Voltage - Output (Min/Fixed):
- 8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1.6 mA
- Current - Supply (Max):
- 3.6 mA
- PSRR:
- 72dB ~ 57dB (120Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LE80ABD-TR FAQ
1.How can I place an order for LE80ABD-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LE80ABD-TR 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 LE80ABD-TR reliable?
The price and inventory of LE80ABD-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LE80ABD-TR is usually 5 days.
3.What payment methods are accepted for LE80ABD-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LE80ABD-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LE80ABD-TR?
LE80ABD-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LE80ABD-TR 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 LE80ABD-TR?
For technical support, including LE80ABD-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LE80ABD-TR requirements.
6.How does Aetrix verify that LE80ABD-TR is sourced from the original manufacturer or authorized distributors?
All LE80ABD-TR 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 LE80ABD-TR meets industry standards.
7.What is the process for return or replacement of LE80ABD-TR?
All LE80ABD-TR units undergo pre-shipment inspection (PSI). If there is an issue with LE80ABD-TR, 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 LE80ABD-TR part is unused and in its original packaging.
Return procedure for LE80ABD-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LE80ABD-TR 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 practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
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…
