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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

STMicroelectronics L6926D1013TR

Name: L6926D1013TR
Brand: STMicroelectronics
SKU: L6926D1013TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6926D1013TR

Manufacturer:: STMicroelectronics

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-VDFN Exposed Pad

Datasheet:: L6926D1013TR.pdf

Description:: IC REG BUCK ADJ 800MA 8VFSON

Quantity:: RFQ Add To RFQ list

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Product details

Overview

L6926D1013TR from STMicroelectronics is a monolithic synchronous step-down DC-DC regulator in TSSOP8 package, designed for single-cell Li-Ion battery-powered systems. It delivers up to 800 mA output current with adjustable voltage down to 0.6 V, 600 kHz fixed switching frequency, ±1% output accuracy, and 100% duty-cycle low-dropout operation.

For engineers reviewing the L6926D1013TR datasheet, L6926D1013TR pinout, L6926D1013TR application, or L6926D1013TR equivalent, key selection criteria include input range (2–5.5 V), quiescent current (25 µA in low-consumption mode), internal synchronous FETs, PGOOD signal, and external synchronization capability (500 kHz–1.4 MHz).

Technical Context

The L6926D1013TR implements a current-mode PWM controller with slope-compensated architecture, enabling stable operation at duty cycles >50%. Its dual-mode operation-low-noise (600 kHz continuous) and low-consumption (discontinuous conduction at light load)-is selected via the SYNC pin voltage threshold (0.5 V / 1.3 V).

Protection features include valley-current limiting (1.4 A typ.), overvoltage protection (10% above VREF), thermal shutdown (150 °C), and short-circuit recovery with minimum on-time clamping (250 ns). The error amplifier drives COMP with 220 pF compensation, and PGOOD provides open-drain monitoring of VFB at 90% regulation threshold.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2 V to 5.5 V - supports full discharge curve of single Li-Ion cell (2.7–4.2 V nominal + headroom).
Output Current	800 mA max - sufficient for core logic or RF subsystems in portable devices without external boost.
Switching Frequency	600 kHz fixed (or 500 kHz–1.4 MHz synchronized) - balances EMI control and inductor size in space-constrained layouts.
Quiescent Current	25 µA typ. in low-consumption mode - extends battery runtime during standby/sleep states.
Output Accuracy	±1% over temperature - ensures reliable logic-level compliance for 1.8 V or 3.3 V I/O domains.
Duty Cycle Range	0–100% - enables dropout operation when VIN ≈ VOUT, minimizing conduction loss near battery end-of-life.
Shutdown Current	0.2 µA max - meets ultra-low-power system wake-up requirements with minimal leakage drain.

Pinout & Package

TSSOP8 package (3.0 × 4.9 mm, 1.0 mm height) with exposed thermal pad (E-pad) requiring GND connection for optimal thermal performance (R_thJA = 180 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 RUN	Enable/shutdown control input	Active-high logic: >1.3 V enables regulator; <0.4 V disables with 0.2 µA shutdown current.
2 COMP	Error amplifier output	Drives external RC compensation network (typically 220 pF to GND); sets loop stability and transient response.
3 VFB	Feedback input	Resistor-divider node sensing output voltage; internal 0.6 V reference enables 0.6–V_IN adjustable regulation.
4 GND	Power and signal ground	Common return for power path, control circuitry, and E-pad; must be low-impedance plane connection.
5 LX	Switch node	Connects to external inductor; carries high di/dt switching current; requires tight layout to minimize EMI.
6 VCC	Input supply and bias rail	Accepts 2–5.5 V; powers internal circuitry; includes UVLO with 100 mV hysteresis (2.2 V turn-on).
7 SYNC	Mode select / sync input	High (>1.3 V): low-consumption mode; Low (<0.5 V): low-noise mode; External clock: forces sync mode.
8 PGOOD	Power Good open-drain output	Asserts high when VOUT ≥ 90% of target; requires external pull-up to VOUT or VCC; used for sequencing or fault detection.

Key Features

Feature	Design Value
Internal synchronous MOSFETs	Eliminates need for external Schottky diode, reducing BOM count and PCB area while improving efficiency by ~5–8% vs. asynchronous designs.
Selectably optimized light-load behavior	SYNC pin toggles between low-noise (fixed 600 kHz) and low-consumption (discontinuous) modes-enabling design trade-off between EMI and battery life.
100% duty-cycle operation	Permits dropout regulation down to V_IN – V_DS(on), critical for maintaining 3.3 V output as Li-Ion discharges from 4.2 V to 2.7 V.
Integrated protections	Valley-current limit (1.4 A), OVP (10% over VREF), thermal shutdown (150 °C), and short-circuit recovery with min-T_ON clamping ensure robust field reliability.
PGOOD with 90% threshold	Enables precise power-rail monitoring for microcontroller reset assertion or system-level sequencing without external comparators.

Applications

Portable Medical Sensors

GPS Tracking Modules

Use Scenario: Wearable pulse oximeter powered by coin-cell or single Li-Ion battery with intermittent BLE transmission.

IC Role / Device Role / Timing Role: Primary power regulator supplying 1.8 V to MCU and 3.3 V to optical sensor/ADC subsystem.

Use Value: 25 µA quiescent current extends 7-day battery life; PGOOD enables accurate low-battery warning before shutdown.

Use Scenario: Compact asset tracker using u-blox M8/N1 modules with aggressive sleep-wake cycling.

IC Role / Device Role / Timing Role: System power manager delivering 3.3 V to GNSS receiver and 1.2 V to ARM Cortex-M0+ host.

Use Value: 100% duty cycle maintains GPS lock during battery dip below 3.3 V; SYNC pin synchronizes switching to avoid RF band interference.

Industrial Handheld Scanners

Smart Home Sensor Hubs

Use Scenario: Rugged barcode scanner operating across -20 °C to 60 °C ambient with cold-start requirement.

IC Role / Device Role / Timing Role: Main DC-DC converter powering laser driver, CMOS imager, and Bluetooth LE SoC.

Use Value: Thermal shutdown (150 °C) prevents latch-up under sealed enclosure conditions; ±1% accuracy ensures consistent imager biasing.

Use Scenario: Battery-backed Zigbee/Z-Wave hub supporting 24/7 occupancy and environmental sensing.

IC Role / Device Role / Timing Role: Dual-output regulator (via resistor divider tuning) feeding 3.3 V radio and 1.8 V MCU/SPI flash.

Use Value: Adjustable 0.6 V reference allows precise scaling for ultra-low-voltage peripherals; low-noise mode suppresses switching artifacts in analog sensor front-ends.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS62231DRVR	Fixed 3.3 V output (non-adjustable); 2.05–6.5 V input; 300 mA max; 3.6 MHz switching; no PGOOD or SYNC.	Targeted at simpler, cost-sensitive applications where output voltage is fixed and light-load efficiency is secondary.	Choose if board space is critical (1.6 × 1.6 mm WSON) and system does not require programmability or sequencing signals.
MAX17503GCU+	4.5–60 V input; 2 A output; external MOSFETs; adjustable frequency (100 kHz–2.2 MHz); no integrated low-consumption mode.	Designed for industrial/high-voltage battery stacks (e.g., 12 V lead-acid or multi-cell LiPo), not single-cell portable use.	Choose only for wide-input, high-current applications where L6926D1013TR's 5.5 V max input is insufficient.

Compared with TPS62231DRVR and MAX17503GCU+, the L6926D1013TR uniquely combines single-cell Li-Ion compatibility (2–5.5 V), 800 mA output, adjustable VOUT, PGOOD, and dual-mode light-load optimization-making it irreplaceable for compact, battery-life-sensitive portable designs requiring flexibility and reliability.

Availability

L6926D1013TR is available at Aetrix Electronics and suitable for portable medical sensors, GPS tracking modules, industrial handheld scanners, and smart home sensor hubs requiring stable component supply across production lifecycles.

Supply support for L6926D1013TR 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, specializing in power management, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.

The L6926 belongs to ST's high-efficiency DC-DC converter product line, engineered specifically for battery-powered portable electronics demanding ultra-low quiescent current, small footprint, and robust protection in constrained thermal environments.

FAQ

What is the minimum input voltage required to start up the L6926D1013TR?

The L6926D1013TR has a typical turn-on threshold of 2.2 V at the VCC pin, with 100 mV hysteresis. Startup is guaranteed down to 2.0 V after initial enable, making it compatible with deeply discharged single Li-Ion cells (down to ~2.5 V under load). Below 2.0 V, the internal UVLO circuit disables operation to prevent erratic behavior.

Can the L6926D1013TR operate without an external compensation network on the COMP pin?

No. The COMP pin requires an external RC network-typically a 220 pF capacitor to GND-for loop stability. Omitting it causes oscillation or poor transient response. For very low-ESR ceramic output capacitors, a series resistor (~50 kΩ) added to the 220 pF cap may be needed to damp high-frequency peaking observed during load steps.

How does the PGOOD signal behave during startup and fault conditions?

PGOOD asserts high only when VOUT reaches and sustains ≥90% of its regulated value, determined by the VFB divider. During startup, it remains low until regulation is achieved. Under undervoltage (e.g., overload or input dip), it pulls low immediately. If unused, the pin may be left floating-no pull-up is mandatory unless sequencing or monitoring is implemented.

Is the E-pad on the TSSOP8 package electrically connected internally?

Yes-the E-pad is internally tied to GND and must be soldered to a solid GND plane for thermal and electrical performance. Thermal resistance drops from 180 °C/W (no E-pad connection) to ~120 °C/W with proper GND via stitching, directly impacting maximum sustainable output current at elevated ambient temperatures.

L6926D1013TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-VDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 2V

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 0.6V

Voltage - Output (Max):: 5.5V

Current - Output:: 800mA

Frequency - Switching:: 600kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-VFSON-EP (3x4.9)

L6926D1013TR FAQ

1.How can I place an order for L6926D1013TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L6926D1013TR 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 L6926D1013TR reliable?

The price and inventory of L6926D1013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6926D1013TR is usually 5 days.

3.What payment methods are accepted for L6926D1013TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6926D1013TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6926D1013TR?

L6926D1013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6926D1013TR 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 L6926D1013TR?

For technical support, including L6926D1013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6926D1013TR requirements.

6.How does Aetrix verify that L6926D1013TR is sourced from the original manufacturer or authorized distributors?

All L6926D1013TR 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 L6926D1013TR meets industry standards.

7.What is the process for return or replacement of L6926D1013TR?

All L6926D1013TR units undergo pre-shipment inspection (PSI). If there is an issue with L6926D1013TR, 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 L6926D1013TR part is unused and in its original packaging.

Return procedure for L6926D1013TR:

1.Submit a request within 90 days.

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

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