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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

STMicroelectronics L6932D1.8

Name: L6932D1.8
Brand: STMicroelectronics
SKU: L6932D1.8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6932D1.8

Manufacturer:: STMicroelectronics

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: L6932D1.8.pdf

Description:: IC REG LINEAR 1.8V 2A 8SO

Quantity:: RFQ Add To RFQ list

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Inventory:1,864

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Product details

Overview

L6932D1.8 from STMicroelectronics is a 2A ultra-low dropout linear regulator with fixed 1.8V output, 2V–14V input range, 200mΩ max R_DS(on), 200µA quiescent current, and ±1% output voltage accuracy-designed for I/O and chipset supply in mobile PCs and handheld instruments.

For engineers reviewing the L6932D1.8 datasheet, L6932D1.8 pinout, L6932D1.8 application, or L6932D1.8 equivalent, this page delivers verified electrical specs, SO-8 (4+4) terminal mapping, thermal shutdown behavior, PGOOD signaling, and real-world load regulation performance at 2A across temperature.

Technical Context

The L6932D1.8 integrates an internal 50mΩ N-channel MOSFET to achieve ultra-low dropout operation, enabling efficient 2.5V-to-1.8V conversion at 2A in portable systems. Its error amplifier references a stable 1.25V bandgap and compares feedback against V_REF to regulate output within ±1% over load, line, and temperature.

It features open-drain PGOOD monitoring with 90% V_OUT threshold and 10% hysteresis, EN-controlled startup, thermal shutdown at 150°C (20°C hysteresis), and current limiting set to 2.5A ±8%. The device operates without external compensation when using ≥10µF output capacitance with moderate ESR.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.8V ±1% at 0.1A–2A load; ensures stable core I/O rail for processors and memory interfaces.
Input Voltage Range	2V to 14V; supports direct connection to Li-ion battery stacks, DC/DC pre-regulators, or 3.3V/5V system rails.
Max Output Current	2A continuous; limited by thermal design and dropout headroom-enables single-rail supply for dual-core SoC I/O domains.
R_DS(on)	≤200mΩ; minimizes dropout voltage (e.g., 400mV at 2A), reducing power loss and heat generation in compact layouts.
Quiescent Current	200µA at any load; maintains low standby power in always-on subsystems like PCMCIA card power management.
Line/Load Regulation	≤5mV line change (±10% V_IN), ≤15mV load change (0.1A→2A); sustains tight voltage stability under dynamic CPU I/O activity.
PGOOD Threshold	90% of nominal V_OUT with 10% hysteresis; provides reliable power sequencing signal for FPGA or ASIC reset control.

Pinout & Package

Package: SO-8 (4+4), surface-mount, 1.27mm pitch, 5.0mm × 4.0mm body, 1.75mm max height per mechanical drawing 0016023C.

Pin/Terminal	Circuit Role	Design Meaning
1 - EN	Enable input	Active-high logic input; device enabled when pulled to V_IN, disabled when grounded-supports system-level power gating.
2 - IN	Input supply	Drain connection of internal N-MOSFET; requires ≥10µF input capacitor to suppress ripple and sustain transient response.
3 - GND	Ground reference	Common return path for all internal circuits; pins 5–8 are internally bonded to this node for low-impedance thermal conduction.
4 - OUT	Regulated output	Source connection of internal N-MOSFET; supplies 1.8V to load; requires ≥10µF output capacitor for stability and transient recovery.
5–8 - GND	Thermal ground pads	Four dedicated ground terminals (pins 5,6,7,8) provide enhanced thermal dissipation and low-inductance return paths for high-current operation.
- PGOOD	Power-good indicator	Open-drain output on pin 3 of adjustable variant; not present on L6932D1.8-fixed version uses pin 3 as GND (confirmed by pin diagram and ordering table).

Key Features

Feature	Design Value
Ultra-low dropout	200mΩ R_DS(on) enables <400mV dropout at 2A-critical for maintaining 1.8V rail from 2.5V or 3.3V sources in space-constrained PCBs.
High-accuracy regulation	±1% output tolerance over -25°C to +125°C junction temperature ensures reliable timing margin for DDR I/O and PCIe reference clocks.
Integrated protection	Thermal shutdown (150°C trip, 130°C release) and 2.5A current limit prevent damage during short-circuit or overload events without external circuitry.
Low-noise enable control	EN threshold of 0.65V typical with 0.2V hysteresis allows clean, bounce-free activation using standard GPIO or sequencer outputs.
Stable with ceramic caps	Designed for ≥10µF output capacitance; supports low-ESR MLCCs while avoiding oscillation via internal compensation-no external RC network required.

Applications

Mobile PC Chipset Supply

Handheld Instrument I/O Rail

Use Scenario: Powering northbridge/southbridge I/O buffers and PCI Express reference voltage domains in subnotebook platforms.

IC Role / Device Role / Timing Role: Primary 1.8V LDO delivering clean, low-noise bias to high-speed digital interfaces with fast load transient response.

Use Value: Maintains <±15mV load regulation during 0.1A→2A transients, preventing setup/hold violations in 100MHz+ I/O clock domains.

Use Scenario: Supplying ADC reference buffers, microcontroller I/O banks, and LCD controller logic in battery-powered test meters.

IC Role / Device Role / Timing Role: Low-quiescent-current (200µA) regulator sustaining accurate analog front-end bias during sleep and active modes.

Use Value: Enables >100-hour battery life in standby while supporting 2A burst loads for sensor acquisition without brownout.

PCMCIA Card Power Management

Processor Core I/O Domain

Use Scenario: Providing hot-plug-safe 1.8V power to Type II PCMCIA cards with automatic enable/disable sequencing.

IC Role / Device Role / Timing Role: EN-controlled LDO with fast turn-on (<10µs) and PGOOD-compatible signaling for host-side power arbitration.

Use Value: Meets PCMCIA 2.0 specification for controlled power ramp and fault isolation-no external FET or supervisor needed.

Use Scenario: Delivering regulated 1.8V to ARM Cortex-A series processor I/O rings, including SDIO, UART, and SPI peripherals.

IC Role / Device Role / Timing Role: High-current (2A), low-dropout regulator decoupling processor I/O from noisy system rails.

Use Value: Achieves <5mV line regulation under ±10% input variation-ensuring signal integrity across multi-voltage SoC interfaces.

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	1.8V fixed, 1A max, 20µV_RMS noise, 26µA IQ; no PGOOD or EN; TO-252-5 package.	Lower noise and IQ but half the current rating; unsuitable for 2A I/O domains requiring full L6932D1.8 capability.	Select only if noise-sensitive analog supply is prioritized over current capacity and system control features.
Analog Devices ADM7172ACPZ-R7	1.8V fixed, 2A, 12µV_RMS noise, 1.3mA IQ, PGOOD and EN; 10-lead LFCSP package.	Higher IQ and smaller footprint; lacks SO-8 compatibility and requires different layout and thermal pad design.	Choose for space-constrained designs where ultra-low noise outweighs legacy SO-8 board compatibility and thermal simplicity.

Compared with TPS7A4700RGWR and ADM7172ACPZ-R7, the L6932D1.8 uniquely balances 2A output, SO-8 manufacturability, 200µA IQ, and integrated thermal/current protection-making it optimal for cost-sensitive, thermally constrained mobile computing boards.

Availability

L6932D1.8 is available at Aetrix Electronics and suitable for mobile PC chipset supply, handheld instrument I/O rail, and PCMCIA card power management requiring stable component supply, long-lifecycle support, and SO-8 second-source flexibility.

Supply support for L6932D1.8 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, Switzerland, specializing in power management, microcontrollers, sensors, and automotive ICs.

The L6932 series belongs to ST's high-performance linear regulator product line, engineered specifically for ultra-low dropout, high-current I/O and memory supply in portable and embedded computing platforms.

FAQ

What is the minimum input voltage required for stable 1.8V output at 2A?

The L6932D1.8 requires ≥2.2V input to maintain regulation at 2A due to its 200mΩ R_DS(on)-yielding ~400mV dropout (2A × 0.2Ω). Below 2.2V, output drops linearly; operation below 2V is prohibited per absolute maximum ratings.

Can the L6932D1.8 be used with ceramic output capacitors without instability?

Yes-ST specifies stable operation with ≥10µF X5R/X7R MLCCs (low ESR) without external compensation. Instability may occur only with <1µF ceramics or when using the adjustable version with high V_OUT; fixed 1.8V version has internal compensation optimized for standard MLCCs.

How does the thermal shutdown behave during sustained 2A operation?

With 62°C/W junction-to-ambient thermal resistance and 60°C ambient, maximum continuous power is 1.5W-limiting sustainable 2A operation to ≤0.75V dropout (e.g., 2.55V input). For higher dropout, pulsed operation up to 1s duration is supported via lower thermal impedance (~20°C/W).

Is there a PGOOD signal on the L6932D1.8 package?

No-PGOOD is only available on the adjustable L6932D1.2 variant (pin 3). The L6932D1.8 uses pin 3 as GND, confirmed by SO-8 pin diagrams, ordering tables, and block diagram labeling. Fixed versions omit PGOOD to simplify pinout and reduce cost.

L6932D1.8 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 14V

Voltage - Output (Min/Fixed):: 1.8V

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:: -25°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

L6932D1.8 FAQ

1.How can I place an order for L6932D1.8 through Aetrix?

Please submit a Request for Quotation (RFQ) for L6932D1.8 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 L6932D1.8 reliable?

The price and inventory of L6932D1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6932D1.8 is usually 5 days.

3.What payment methods are accepted for L6932D1.8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6932D1.8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6932D1.8?

L6932D1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6932D1.8 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 L6932D1.8?

For technical support, including L6932D1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6932D1.8 requirements.

6.How does Aetrix verify that L6932D1.8 is sourced from the original manufacturer or authorized distributors?

All L6932D1.8 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 L6932D1.8 meets industry standards.

7.What is the process for return or replacement of L6932D1.8?

All L6932D1.8 units undergo pre-shipment inspection (PSI). If there is an issue with L6932D1.8, 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 L6932D1.8 part is unused and in its original packaging.

Return procedure for L6932D1.8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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