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

STMicroelectronics LED2000PUR

Name: LED2000PUR
Brand: STMicroelectronics
SKU: LED2000PUR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LED2000PUR

Manufacturer:: STMicroelectronics

Category:: LED Drivers

Package:: 8-VDFN Exposed Pad

Datasheet:: LED2000PUR.pdf

Description:: IC LED DRVR RGLTR PWM 3A 8VFQFPN

Quantity:: RFQ Add To RFQ list

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Inventory:59,707

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Product details

Overview

LED2000PUR from STMicroelectronics is a monolithic 3 A synchronous step-down constant-current LED driver IC with 850 kHz fixed-frequency peak-current-mode control, ±7% output current accuracy, and integrated PWM dimming. It operates from 3.0 V to 18 V input, delivers precise current regulation via external sense resistor on FB pin, and is used in high-brightness LED lighting systems requiring thermal robustness and ceramic-capacitor compatibility.

For engineers reviewing the LED2000PUR datasheet, LED2000PUR pinout, LED2000PUR application, or LED2000PUR equivalent, key selection criteria include its 100 mV typical current-sense voltage, 95 mΩ/69 mΩ HS/LS R_DS(on), thermal shutdown at 150 °C, and dual-package availability (VFQFPN 4×4 mm and SO8-BW) for layout flexibility in automotive interior lighting and signage designs.

Technical Context

The LED2000PUR implements a peak-current-mode architecture with an embedded 850 kHz sawtooth oscillator and transconductance error amplifier referenced to a 97 mV (typ.) internal voltage. Its control loop compares sensed inductor current against the error amplifier output to generate PWM gate drive for the integrated high-side and low-side MOSFETs.

It features pulse-by-pulse overcurrent protection triggering hiccup mode, soft-start with 1 ms ramp time, and dedicated DIM pin logic that disables switching below 0.4 V and enables PWM dimming above 1.2 V - with dimming frequency and depth directly controllable via external signal timing without requiring external compensation components.

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 (-40 °C to +125 °C) and unit-to-unit variation.
Switching Frequency	850 kHz (typ.) - enables compact magnetics and ceramic output capacitors; reduces EMI filter size.
Current Sense Voltage	97 mV (typ.) - minimizes power loss in sense resistor and improves efficiency at high output currents.
R_DS(on) (HS / LS)	95 mΩ / 69 mΩ (typ.) - lowers conduction loss in internal power switches, supporting >90% efficiency at 3 A load.
Thermal Shutdown	150 °C (typ.) with 15 °C hysteresis - prevents latch-up during sustained overload and enables safe recovery after cooling.
Dimming Control	DIM pin accepts 0–V_INA logic; 1.2 V threshold enables PWM dimming with no external circuitry required.
Quiescent Current	2.5 mA (max) - maintains low standby power in always-on lighting applications.

Pinout & Package

LED2000PUR is available in VFQFPN 4 mm × 4 mm, 8-lead (exposed pad) and standard SO8-BW packages. Both variants share identical pin functions and electrical characteristics.

Pin/Terminal	Circuit Role	Design Meaning
VINA	Analog supply rail	Powers internal analog blocks (error amp, reference, oscillator); must be decoupled near pin.
DIM	Digital dimming control	Logic-level input: <0.4 V disables switching; >1.2 V enables PWM dimming; float or tie to VINA if unused.
FB	Current sense feedback	Connects to low-side of external sense resistor; regulates LED current by maintaining ~97 mV across resistor.
AGND	Analog ground reference	Separate ground return for precision analog circuitry; must be star-connected to PGND at single point.
NC	No connect	Internally unconnected; leave floating - no PCB trace or solder required.
VINSW	Power input	Main DC input (3–18 V); feeds high-side switch and supplies energy to inductor during on-time.
SW	Switch node	Drives external inductor; carries high di/dt switching waveform - requires tight layout and Kelvin routing.
PGND	Power ground	High-current return path for MOSFETs and inductor; connects to thermal pad in VFQFPN for heat dissipation.

Key Features

Feature	Design Value
Synchronous rectification	Integrated 95 mΩ HS / 69 mΩ LS MOSFETs eliminate external diode losses and improve full-load efficiency by ≥5% vs. asynchronous designs.
Embedded compensation network	RC = 70 kΩ, CC = 195 pF pre-tuned for stability with common LC combinations - removes need for external compensation components.
Ceramic capacitor compliance	Stable operation with low-ESR MLCCs (e.g., 10 µF X7R) - reduces board area and eliminates electrolytic capacitor aging/reliability concerns.
Peak-current-mode control	Fast transient response and inherent cycle-by-cycle current limiting - enables robust short-circuit and open-LED fault handling without external sensing.
Thermal shutdown with hysteresis	150 °C trip with 15 °C hysteresis prevents thermal oscillation - allows safe recovery and continuous operation under intermittent overload conditions.

Applications

Automotive Interior Lighting

Architectural Signage

Use Scenario: LED strip illumination in door panels, footwells, and ambient mood lighting with dynamic color tuning.

IC Role / Device Role / Timing Role: Constant-current source regulating 1–3 A through串联 LED strings; DIM pin synchronized to vehicle CAN bus PWM signals for coordinated light effects.

Use Value: ±7% current accuracy ensures uniform brightness across multiple modules; 850 kHz switching avoids audible noise in cabin environment.

Use Scenario: High-lumen channel letters and backlit acrylic signs in retail environments requiring 24/7 operation.

IC Role / Device Role / Timing Role: Primary current regulator driving 2–3 A LED arrays; thermal shutdown protects against enclosure overheating during summer ambient conditions.

Use Value: VFQFPN package's 40 °C/W R_thJA enables passive heatsinking; ceramic capacitor compatibility extends lifetime beyond 50,000 hours.

Halogen Bulb Replacement

Industrial Machine Vision Lighting

Use Scenario: Retrofit LED modules replacing 12 V/20 W halogen bulbs in display cases and task lighting.

IC Role / Device Role / Timing Role: Step-down constant-current driver converting 12 V DC to regulated 700 mA–2 A output; soft-start prevents inrush stress on legacy wiring.

Use Value: 3–18 V input range accommodates brownout conditions; 100 mV sense voltage minimizes I²R loss in compact form factor.

Use Scenario: Stroboscopic LED arrays for high-speed inspection cameras requiring microsecond-level current turn-on/turn-off.

IC Role / Device Role / Timing Role: Fast-response current source enabling precise PWM dimming down to 100 Hz with <1 µs current rise/fall times.

Use Value: Peak-current-mode architecture provides <5 µs current regulation response; DIM pin logic enables direct FPGA GPIO control.

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
LM3409MH/NOPB	Asynchronous buck controller (external MOSFETs); 1.25 V feedback reference; no integrated dimming logic.	Requires external high-side switch and separate PWM generator; higher BOM count and layout complexity.	Choose when >3 A output or discrete FET optimization (e.g., GaN) is required; not drop-in compatible.
AL8862SP-13	800 kHz synchronous buck LED driver; 200 mV sense voltage; ±5% current accuracy; no thermal shutdown hysteresis spec.	Higher sense voltage increases power loss at 3 A; lacks documented hiccup-mode OCP behavior under short-circuit.	Consider for cost-sensitive general lighting where thermal margin is ample; verify short-circuit recovery in final design.

Compared with LM3409MH/NOPB, LED2000PUR integrates power switches and dimming logic to reduce component count and layout risk; versus AL8862SP-13, it offers tighter current accuracy, lower sense voltage, and explicit thermal hysteresis - critical for enclosed or high-ambient-temperature deployments.

Availability

LED2000PUR is available at Aetrix Electronics and suitable for automotive interior lighting, architectural signage, halogen bulb replacement, and industrial machine vision lighting requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for LED2000PUR 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The LED2000 product line targets high-reliability, thermally constrained LED lighting applications - emphasizing integration, efficiency, and protection features to simplify system design while meeting stringent automotive and commercial lighting standards.

FAQ

What is the recommended minimum sense resistor value for 3 A output current?

With a typical FB voltage of 97 mV, the minimum sense resistor is R_SENSE = 97 mV / 3 A = 32.3 mΩ. A standard 33 mΩ, 1% tolerance, 1 W metal-strip resistor is recommended to ensure ±7% current accuracy and adequate power derating at full load.

Can LED2000PUR operate with input voltage below 3.0 V?

No. The absolute minimum operating input voltage is 3.0 V per datasheet specifications. Below this, the internal regulator cannot sustain bias for analog blocks, causing erratic switching or complete disablement. UVLO threshold is 2.6 V (min), but functional operation requires ≥3.0 V.

How does the DIM pin behave during thermal shutdown?

During thermal shutdown, the power stage is disabled and SW pin goes high-impedance, but DIM pin remains fully functional. If DIM is held high before shutdown, the device resumes normal PWM dimming immediately upon thermal recovery - no reset or re-enable sequence is needed.

Is the VFQFPN package thermally enhanced compared to SO8-BW?

Yes. The VFQFPN 4×4 mm package has R_thJA = 40 °C/W (on demo board), while SO8-BW is 65 °C/W. The exposed thermal pad in VFQFPN enables direct PCB copper pour connection, improving heat transfer by >35% - critical for 3 A continuous operation in confined spaces.

LED2000PUR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-VDFN Exposed Pad

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-VFQFPN (4x4)

LED2000PUR FAQ

1.How can I place an order for LED2000PUR through Aetrix?

Please submit a Request for Quotation (RFQ) for LED2000PUR 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 LED2000PUR reliable?

The price and inventory of LED2000PUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LED2000PUR is usually 5 days.

3.What payment methods are accepted for LED2000PUR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LED2000PUR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LED2000PUR?

LED2000PUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LED2000PUR 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 LED2000PUR?

For technical support, including LED2000PUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LED2000PUR requirements.

6.How does Aetrix verify that LED2000PUR is sourced from the original manufacturer or authorized distributors?

All LED2000PUR 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 LED2000PUR meets industry standards.

7.What is the process for return or replacement of LED2000PUR?

All LED2000PUR units undergo pre-shipment inspection (PSI). If there is an issue with LED2000PUR, 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 LED2000PUR part is unused and in its original packaging.

Return procedure for LED2000PUR:

1.Submit a request within 90 days.

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

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