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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

STMicroelectronics LED2000DR

Name: LED2000DR
Brand: STMicroelectronics
SKU: LED2000DR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LED2000DR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

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

Datasheet:: LED2000DR.pdf

Description:: IC LED DRIVER RGLTR PWM 3A 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:2,056

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Product details

Overview

LED2000DR from STMicroelectronics is a monolithic 3 A step-down constant-current LED driver IC with synchronous rectification, operating from 3.0 V to 18 V input, featuring 850 kHz fixed switching frequency, ±7% output current accuracy, and PWM dimming capability. It serves as the primary current-regulated power stage in high-brightness LED lighting systems requiring precise thermal and overcurrent protection.

For engineers reviewing the LED2000DR datasheet, LED2000DR pinout, LED2000DR application, or LED2000DR equivalent, this device is selected for its integrated error amplifier compensation, ceramic-capacitor compatibility, low 100 mV sense voltage, and dual-package availability (VFQFPN and SO8) in automotive-grade lighting and signage designs.

Technical Context

The LED2000DR implements peak current mode control with an embedded 850 kHz sawtooth oscillator and transconductance error amplifier referenced to a 100 mV internal voltage. Its feedback loop compares FB voltage against this reference to regulate LED current via sensing resistor voltage drop.

It integrates high-side (95 mΩ R_DS(on)) and low-side (69 mΩ R_DS(on)) MOSFETs for synchronous rectification, supports PWM dimming via the DIM pin with logic-level thresholds (2.6–2.9 V ON, 0.4–2.4 V OFF), and includes hiccup-mode overcurrent protection and thermal shutdown at 150 °C with 15 °C hysteresis.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.0 V to 18 V - supports wide-range DC inputs including 12 V automotive and 15 V industrial rails.
Output Current Accuracy	±7% - ensures consistent LED brightness across temperature and unit-to-unit variation without external calibration.
Switching Frequency	850 kHz (typ.) - enables compact magnetics and ceramic output capacitors; reduces EMI filter size.
Sense Voltage (V_FB)	90–104 mV (T_J = 25 °C) - low dropout improves efficiency and allows use of small, low-power sense resistors.
R_DS(on) HS / LS	95 mΩ / 69 mΩ (I_SW = 750 mA) - minimizes conduction loss in both power switches for >90% typical efficiency.
Dimming Control	DIM pin accepts 0–V_INA logic; enables PWM dimming with fast current rise/fall edges per Figure 27/28.
Thermal Shutdown	150 °C ±10 °C with 15 °C hysteresis - prevents latch-up during sustained overload while enabling automatic recovery.

Pinout & Package

LED2000DR is available in two RoHS-compliant packages: VFQFPN 4 mm × 4 mm × 1.08 mm (8-lead, exposed pad) and standard SO8-BW. Both packages support thermal dissipation up to 2 W at T_A < 60 °C (R_thJA = 40 °C/W and 65 °C/W respectively).

Pin/Terminal	Circuit Role	Design Meaning
VINA	Analog supply	Powers internal bandgap, error amplifier, and logic; must be decoupled near pin to suppress noise coupling into FB path.
DIM	Digital dimming input	Active-high PWM control; logic low disables switching; internal pull-down not present-requires external tie-high if unused.
FB	Current sense feedback	Connects to low-side sense resistor; regulates LED current by maintaining 100 mV across resistor (I_OUT = 0.1 V / R_SENSE).
AGND	Analog ground	Reference for VINA, FB, DIM; must be separated from PGND and connected at single point to avoid ground bounce in feedback loop.
VINSW	Power input	Main high-voltage input rail (up to 18 V); feeds HS switch and internal regulator; requires local ceramic input capacitor.
SW	Switch node	Drives external inductor; high dv/dt node-must minimize trace area and avoid routing near sensitive analog signals.
PGND	Power ground	Return path for HS/LS switches and inductor; connects to thermal pad in VFQFPN; must be low-inductance copper pour.
GND	Ground tie	Internally connected to AGND; must be shorted externally to maintain analog reference integrity.

Key Features

Feature	Design Value
Embedded compensation network	RC = 70 kΩ, CC = 195 pF - eliminates need for external compensation components, reducing BOM count and layout sensitivity.
Ceramic output capacitor compliant	Stable with low-ESR MLCCs - avoids bulky electrolytics, improves reliability, and enables compact PCB footprint.
Synchronous rectification	Integrated HS/LS MOSFETs - achieves >90% efficiency at 3 A without external diode losses or heat-sink requirements.
PWM dimming interface	DIM pin with defined logic thresholds and 2 µA bias - compatible with MCU GPIO or dedicated PWM controllers without level-shifting.
Full protection suite	Thermal shutdown, hiccup-mode OCP, UVLO, and short-circuit detection - enables robust operation in unattended lighting installations.

Applications

Automotive Headlamp Modules

Architectural Signage Lighting

Use Scenario: Constant-current driving of multi-LED strings in adaptive front-lighting systems (AFS) with dynamic beam shaping.

IC Role / Device Role / Timing Role: Primary current-regulated buck controller; provides stable 3 A output with fast PWM dimming response (<1 µs current fall time per Figure 28).

Use Value: Enables precise lumen control across temperature (-40 °C to +125 °C junction), meeting ECE R149 photometric stability requirements.

Use Scenario: High-efficiency illumination of large-format LED signs in outdoor retail environments with variable ambient temperature.

IC Role / Device Role / Timing Role: Standalone constant-current source for parallel LED strings; manages thermal derating autonomously via internal shutdown/hysteresis.

Use Value: Eliminates need for external thermal sensors or microcontroller-based monitoring, reducing system cost and firmware complexity.

Industrial Machine Vision Lighting

Commercial Downlight Retrofit

Use Scenario: Stroboscopic illumination synchronized to camera exposure timing in automated inspection systems.

IC Role / Device Role / Timing Role: Fast-switching current source triggered by external PWM signal; supports dimming frequencies up to 20 kHz without current droop.

Use Value: Delivers consistent LED intensity pulse-to-pulse (±7% current accuracy) critical for pixel-level grayscale fidelity in image capture.

Use Scenario: Direct replacement of halogen MR16 lamps using 12 V AC/DC input in commercial ceiling fixtures.

IC Role / Device Role / Timing Role: Step-down constant-current regulator converting 12 V input to regulated LED current; operates with minimal external components.

Use Value: Achieves >90% efficiency and 40,000-hour lifetime without electrolytic capacitors-meeting DLC Premium efficiency and reliability criteria.

Equivalent & Alternatives

The following parts are listed as comparable options for similar constant-current LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM3409HVMM/NOPB	Adjustable 1.275 MHz frequency; external compensation; no integrated LS FET (requires external diode or MOSFET).	Higher-frequency operation enables smaller inductors but increases EMI filtering burden; lacks synchronous rectification efficiency.	Select when board space is constrained and thermal management allows discrete LS switch implementation.
TPS92630QPWPRQ1	Automotive AEC-Q100 qualified; 3.5 A max; integrated N-channel pre-driver only-requires external HS/LS MOSFETs.	Designed for ASIL-B systems with diagnostic reporting; higher BOM count and layout complexity due to external FETs.	Select when functional safety compliance (ISO 26262) and diagnostics are mandatory, not for cost-sensitive general lighting.

Compared with LM3409HVMM/NOPB and TPS92630QPWPRQ1, LED2000DR offers lower system-level component count, superior thermal performance via integrated synchronous switches, and simpler layout-making it optimal for non-safety-critical, high-volume LED lighting where efficiency and design simplicity are prioritized.

Availability

LED2000DR is available at Aetrix Electronics and suitable for automotive headlamps, architectural signage, machine vision lighting, and commercial downlight retrofit requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LED2000DR 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, delivering intelligent power, analog, MEMS, and microcontroller solutions for industrial, automotive, and consumer markets.

The LED2000DR belongs to ST's LED driver product line, engineered specifically for high-efficiency, thermally robust constant-current regulation in high-brightness lighting applications where integration, reliability, and ease of design are critical.

FAQ

What is the maximum recommended LED string voltage that LED2000DR can drive?

The LED2000DR is a step-down (buck) converter; its maximum output voltage equals V_IN minus the minimum dropout required for regulation. With 18 V max input and typical 1.2 V headroom (HS R_DS(on) × I_OUT + diode forward drop in asynchronous mode), the practical max LED string voltage is ~16.5 V at full load. For higher voltages, a boost or buck-boost topology is required.

Can LED2000DR operate with a 24 V input supply?

No. The absolute maximum V_INSW rating is 20 V (Table 2), and continuous operation above 18 V violates the specified operating input voltage range. Applying 24 V risks permanent damage due to overvoltage stress on internal power transistors and gate drivers. A pre-regulator or alternative 36 V-rated driver is required for 24 V systems.

Is the NC pin (Pin 5 in VFQFPN, Pin 7 in SO8) required to be left floating or grounded?

Pin 5 (VFQFPN) / Pin 7 (SO8) is explicitly marked "NC" (Not Connected) in Table 1 and must remain unconnected-neither grounded nor tied to any voltage. Routing traces to or from this pin may cause parasitic coupling or mechanical stress; ST's layout guidelines require it to be isolated with solder mask coverage.

Does LED2000DR support analog dimming via the FB pin?

No. The FB pin is strictly a high-impedance current-sense input referenced to the internal 100 mV bandgap. Analog dimming would require modulating the reference or gain-neither supported. Dimming is implemented exclusively via the dedicated DIM pin using PWM signals, as confirmed in Section 6.6 and Figure 11.

LED2000DR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: DC DC Regulator

Topology:: Step-Down (Buck)

Internal Switch(s):: Yes

Number of Outputs:: 1

Voltage - Supply (Min):: 3V

Voltage - Supply (Max):: 18V

Voltage - Output:: -

Current - Output / Channel:: 3A

Frequency:: 850kHz

Dimming:: PWM

Applications:: Lighting, Signage

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

LED2000DR FAQ

1.How can I place an order for LED2000DR through Aetrix?

Please submit a Request for Quotation (RFQ) for LED2000DR 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 LED2000DR reliable?

The price and inventory of LED2000DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LED2000DR is usually 5 days.

3.What payment methods are accepted for LED2000DR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LED2000DR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LED2000DR?

LED2000DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LED2000DR 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 LED2000DR?

For technical support, including LED2000DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LED2000DR requirements.

6.How does Aetrix verify that LED2000DR is sourced from the original manufacturer or authorized distributors?

All LED2000DR 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 LED2000DR meets industry standards.

7.What is the process for return or replacement of LED2000DR?

All LED2000DR units undergo pre-shipment inspection (PSI). If there is an issue with LED2000DR, 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 LED2000DR part is unused and in its original packaging.

Return procedure for LED2000DR:

1.Submit a request within 90 days.

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

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