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

STMicroelectronics L6928D013TR

Name: L6928D013TR
Brand: STMicroelectronics
SKU: L6928D013TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L6928D013TR

Manufacturer:: STMicroelectronics

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: L6928D013TR.pdf

Description:: IC REG BUCK ADJ 800MA 8MSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

L6928D013TR 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 (0.6 V to VIN), 1.4 MHz fixed-frequency current-mode control, ±1% output accuracy, and 100% duty-cycle low-dropout operation.

For engineers reviewing the L6928D013TR datasheet, L6928D013TR pinout, L6928D013TR application, or L6928D013TR equivalent, key selection criteria include input range (2–5.5 V), quiescent current (25 µA in low-consumption mode), PGOOD signaling, external synchronization capability (1–2 MHz), and integrated high/low-side MOSFETs eliminating external Schottky diodes.

Technical Context

The L6928D013TR employs a slope-compensated current-mode PWM architecture with internal 0.6 V reference and error amplifier. Its peak/valley current limiting (1.2 A typ. peak, 1.4 A typ. valley) enables robust short-circuit protection while maintaining regulation under dynamic load transients.

Two selectable light-load modes are controlled via the SYNC pin: low-consumption mode (discontinuous conduction, ~25 µA IQ) and low-noise mode (forced 1.4 MHz switching). External synchronization (1–2 MHz) overrides mode selection and activates low-noise operation, supporting noise-sensitive RF or audio subsystems.

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 V–4.2 V) plus margin.
Output Current	800 mA max - sufficient for microcontrollers, sensors, and RF transceivers in portable devices.
Switching Frequency	1.4 MHz fixed, externally synchronizable 1–2 MHz - enables compact LC filter design and EMI control.
Quiescent Current	25 µA typ. in low-consumption mode - extends battery life in standby or sleep states.
Output Accuracy	±1% over temperature - ensures stable core voltage for precision analog or digital loads.
Duty Cycle Range	0–100% - enables dropout operation when VIN ≈ VOUT, minimizing conduction loss at end-of-life battery voltage.
Shutdown Current	0.2 µA max - meets ultra-low-power system shutdown requirements.
PGOOD Threshold	90% of regulated VOUT - provides reliable power-rail monitoring with 4% hysteresis for clean sequencing.

Pinout & Package

TSSOP8 package (3.0 × 4.9 mm, 1.0 mm height, exposed thermal pad); RoHS-compliant ECOPACK®; thermal resistance 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	Connects to RC compensation network (e.g., 220 pF to GND); sets loop stability and transient response.
3 VFB	Feedback input	Monitors resistor-divider output; regulates VOUT = 0.6 V × (1 + R2/R1); ±1% accuracy referenced to 0.6 V internal bandgap.
4 GND	Power and signal ground	Common return path; E-pad must be soldered to PCB ground plane for thermal and electrical performance.
5 LX	Switch node	Drives external inductor; connects internally to source of low-side NMOS and drain of high-side PMOS.
6 VCC	Input supply and bias rail	Accepts 2–5.5 V; powers internal circuitry; includes 100 mV UVLO hysteresis for clean start-up.
7 SYNC	Mode select / sync input	High (>1.3 V): low-consumption mode; Low (<0.5 V): low-noise mode; AC-coupled 1–2 MHz clock forces sync mode.
8 PGOOD	Open-drain Power Good output	Pulled low when VOUT < 90% target; requires external pull-up to VOUT or VCC; enables system power sequencing.

Key Features

Feature	Design Value
Synchronous rectification	Integrated high-side PMOS and low-side NMOS eliminate external Schottky diode, improving efficiency by ~8–12% at medium loads.
Adjustable output (0.6 V min)	Supports core voltages for ARM Cortex-M MCUs (e.g., 1.2 V, 1.8 V) and I/O rails (3.3 V) using two external resistors.
100% duty-cycle operation	Maintains regulation down to VIN – V_DS(on) × I_LOAD, critical for sustaining 3.3 V output as Li-ion drops from 3.4 V to 3.0 V.
Two light-load modes	Low-consumption mode reduces IQ to 25 µA; low-noise mode avoids sub-audio switching frequencies that interfere with audio codecs or ADCs.
Comprehensive protection suite	Includes OVP (10% overvoltage), short-circuit (peak + valley current limit), thermal shutdown (150 °C), and UVLO.

Applications

Wearable Health Monitor

Industrial Handheld Scanner

Use Scenario: Continuous ECG/PPG sensing powered by coin-cell or single Li-ion battery with multi-day runtime.

IC Role / Device Role / Timing Role: Primary power regulator supplying 1.8 V to analog front-end and 3.3 V to BLE SoC; manages battery voltage sag during RF transmission bursts.

Use Value: 95% peak efficiency and 25 µA quiescent current extend operational time; PGOOD enables safe MCU wake-up only after stable rail establishment.

Use Scenario: Ruggedized barcode scanner operating in warehouses with wide ambient temperature (-20 °C to 60 °C) and intermittent high-current laser activation.

IC Role / Device Role / Timing Role: Main DC-DC converter delivering 800 mA at 3.3 V to imager, laser driver, and MCU; handles 500-ms load steps up to 600 mA.

Use Value: 100% duty cycle sustains output during low-battery conditions; thermal shutdown (150 °C) prevents damage during extended scanning sessions.

GPS/GLONASS Tracker Module

Portable DSC Image Sensor Supply

Use Scenario: Asset tracker logging location every 5 minutes using GPS+cellular modem, requiring ultra-low average power between fixes.

IC Role / Device Role / Timing Role: Dual-rail regulator generating 1.2 V for GPS baseband and 3.3 V for RF front-end; synchronized to host MCU clock to avoid beat frequencies.

Use Value: External 1.5 MHz sync eliminates switching noise in GPS L1 band (1575.42 MHz); low-consumption mode cuts idle power to <1 µW.

Use Scenario: Digital still camera with CMOS image sensor demanding low-noise, ripple-free 2.8 V supply during exposure and readout.

IC Role / Device Role / Timing Role: Dedicated sensor rail regulator; low-noise mode suppresses sub-harmonic artifacts in raw image data caused by variable-frequency switching.

Use Value: Fixed 1.4 MHz operation minimizes spectral energy near sensor pixel clock harmonics; ±1% accuracy prevents gain drift in analog signal chain.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS62231DRYR (TI)	3–5.5 V input; 0.6–5.5 V adjustable output; 300 mA max; 3.6 MHz switching; no PGOOD or sync input.	Limited to lower current and lacks PGOOD for sequencing; higher fSW enables smaller inductors but increases EMI risk in noise-sensitive receivers.	Select if board space is constrained and PGOOD/sync are unnecessary; verify thermal performance at 800 mA.
MAX17503GCU+ (Maxim)	4.5–60 V input; 0.8–24 V output; 1.5 A max; 100–2200 kHz programmable fSW; includes PMBus interface.	Designed for industrial/high-voltage inputs; over-specified for Li-ion battery use; adds complexity and cost without benefit for portable designs.	Choose only if future-proofing for wider input range or digital configuration is required; not drop-in compatible.

Compared with TPS62231DRYR and MAX17503GCU+, the L6928D013TR uniquely balances Li-ion input compatibility (2 V min), integrated PGOOD, external sync capability, and 800 mA output in a compact TSSOP8 - making it optimal for cost-sensitive, battery-optimized portable electronics where reliability and ease of layout matter most.

Availability

L6928D013TR is available at Aetrix Electronics and suitable for wearable health monitors, industrial handheld scanners, GPS trackers, and portable DSCs requiring stable component supply across production lifecycles and global manufacturing sites.

Supply support for L6928D013TR 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, with design, manufacturing, and R&D facilities across Europe, Asia, and the Americas.

The L6928 belongs to ST's high-efficiency DC-DC converter product line, engineered specifically for battery-powered portable equipment where minimal quiescent current, wide input range, and robust protection are mandatory.

FAQ

What is the minimum input voltage required to start up the L6928D013TR?

The L6928D013TR starts up when VCC reaches 2.2 V (typical turn-on threshold), with 100 mV hysteresis ensuring reliable restart after brownout. It continues operating down to 2.0 V, enabling full utilization of single Li-ion cells from 4.2 V to end-of-discharge at ~2.7 V.

Can the L6928D013TR operate without an external compensation network on the COMP pin?

No - a compensation network is mandatory for loop stability. ST specifies a 220 pF capacitor from COMP to GND as the baseline; for very low-ESR ceramic output capacitors, a series resistor (~50 kΩ) may be added to dampen potential ringing during load transients.

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

PGOOD remains high-impedance (floating) until VOUT reaches 90% of its regulated value, then pulls low if VOUT drops below that threshold. During short-circuit or OVP events, PGOOD stays low; it resumes normal monitoring once regulation is restored and VOUT exceeds 90% again.

Is the exposed thermal pad (E-pad) electrically connected internally?

Yes - the E-pad is internally tied to GND and must be soldered to a dedicated PCB ground plane. This connection provides both thermal dissipation (reducing R_thJA by ~30%) and low-inductance grounding for the power switches and feedback path.

L6928D013TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 1.4MHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MSOP

L6928D013TR FAQ

1.How can I place an order for L6928D013TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L6928D013TR 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 L6928D013TR reliable?

The price and inventory of L6928D013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6928D013TR is usually 5 days.

3.What payment methods are accepted for L6928D013TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6928D013TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L6928D013TR?

L6928D013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L6928D013TR 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 L6928D013TR?

For technical support, including L6928D013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6928D013TR requirements.

6.How does Aetrix verify that L6928D013TR is sourced from the original manufacturer or authorized distributors?

All L6928D013TR 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 L6928D013TR meets industry standards.

7.What is the process for return or replacement of L6928D013TR?

All L6928D013TR units undergo pre-shipment inspection (PSI). If there is an issue with L6928D013TR, 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 L6928D013TR part is unused and in its original packaging.

Return procedure for L6928D013TR:

1.Submit a request within 90 days.

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

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