STMicroelectronics EVALED2000P

Overview

LED2000P from STMicroelectronics is a monolithic 3 A synchronous step-down constant-current LED driver IC with fixed 850 kHz switching frequency, ±7% output current accuracy, and integrated PWM dimming control. It operates from 3.0 V to 18 V input, delivers precise current regulation via external sense resistor, and targets high-brightness LED arrays in automotive lighting and signage.

For engineers reviewing the LED2000P datasheet, LED2000P pinout, LED2000P application, or LED2000P equivalent, key selection criteria include its 100 mV typical sense voltage, thermal shutdown at 150 °C, VFQFPN-8 (4 mm × 4 mm) package, and compatibility with ceramic output capacitors for compact, high-efficiency designs.

Technical Context

The LED2000P implements peak current mode control with an embedded 850 kHz oscillator, transconductance error amplifier referenced to 97 mV (typ), and internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its synchronous rectification uses integrated high-side (95 mΩ R_DS(on)) and low-side (69 mΩ R_DS(on)) MOSFETs.

Functional blocks include soft-start (1 ms ramp), pulse-by-pulse overcurrent protection triggering hiccup mode, dimming logic that disables switching on DIM low and enables PWM dimming on square-wave input, and thermal shutdown with 15 °C hysteresis. The FB pin senses voltage across an external current-sense resistor to regulate LED current.

Key Specifications

Pinout & Package

LED2000P is available in VFQFPN-8 (4 mm × 4 mm, 1.08 mm height) and SO8-BW packages. The VFQFPN variant provides superior thermal performance (R_thJA = 40 °C/W) and is recommended for high-current operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM3409HV and TPS92691, the LED2000P delivers higher integration (integrated synchronous FETs, compensation, dimming logic), smaller solution size, and superior thermal performance in VFQFPN-8-making it optimal for cost-sensitive, space-limited single-string LED applications up to 3 A.

Availability

LED2000P is available at Aetrix Electronics and suitable for automotive exterior lighting, architectural signage, industrial machine vision, and commercial retail lighting requiring stable component supply and long-term production continuity.

Supply support for LED2000P 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 microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The LED2000P belongs to ST's LED driver product line, engineered specifically for high-efficiency, thermally robust constant-current regulation in demanding lighting applications where reliability, small form factor, and design simplicity are critical.

FAQ

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

The LED2000P regulates current using a 97 mV (typ) feedback reference. For 3 A output, R_SENSE = 0.097 V / 3 A = 32.3 mΩ. ST recommends ≥0.05 W metal-strip or thin-film resistors with <50 ppm/°C TCR to maintain ±7% accuracy across temperature. Lower values increase noise susceptibility; higher values raise power loss.

Can the LED2000P drive LEDs with forward voltage exceeding 15 V?

No-the maximum input voltage is 18 V, and the device requires sufficient headroom between V_IN and V_LED for regulation. With typical dropout of ~1.2 V (HS R_DS(on) × I_OUT + diode drop), the practical maximum V_LED is ~16.5 V at 12 V input. For higher-V_f strings, use a boost+constant-current architecture or select a higher-input-voltage driver.

How does the DIM pin behave during thermal shutdown?

During thermal shutdown, the internal power stage is disabled and the DIM pin remains functional but has no effect-the device holds output current at zero until junction temperature falls below (150 °C – 15 °C hysteresis) = 135 °C. DIM logic state is preserved; normal operation resumes automatically without reset.

Is the VFQFPN-8 package RoHS-compliant and lead-free?

Yes-the LED2000P VFQFPN-8 package (part number LED2000PTR) is fully RoHS-compliant and lead-free, with matte tin (Sn) termination per JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). The package meets IPC/JEDEC J-STD-020D reflow profile requirements and supports standard Pb-free soldering processes.