STMicroelectronics HVLED001ATR

Overview

HVLED001ATR from STMicroelectronics is a high-voltage quasi-resonant flyback controller IC for LED lighting, supporting primary-side regulation (PSR) and constant-voltage/constant-current output up to 150 W. It integrates 800 V high-voltage startup, input voltage sensing, smart auto-restart timer (ART), and 0–10 V/PWM dimming compatibility in an SSO10 package.

For engineers reviewing the HVLED001ATR datasheet, HVLED001ATR pinout, HVLED001ATR application, or HVLED001ATR equivalent, this controller enables single-stage high-power-factor LED drivers up to 75 W and two-stage topologies up to 150 W - with precise PSR accuracy, low THD, and robust protection against OCP, I-OVP, brownout, optocoupler failure, and output overvoltage.

Technical Context

The HVLED001ATR implements peak current mode control with quasi-resonant (QR) valley switching, using ZCD for zero-current detection and HVSU for direct 800 V input voltage monitoring and startup. Its PSR loop uses VZCD for output voltage sensing and FB for optocoupler-based current regulation, with dual-mode feedback handling.

It features four operating modes - startup, active, stop, and low-consumption - managed by internal UVLO, ART timer, and CTRL pin analog disable. The gate driver delivers 0.3 A source / 0.6 A sink peak current, while integrated protections include programmable blanking time, burst-mode operation below 1.054 V on FB, and brownout detection at 65–140 µA on ZCD.

Key Specifications

Pinout & Package

Package: SSO10 (10-pin shrink small outline package, exposed pad, 1.27 mm pitch). Thermally enhanced for high-power LED driver applications with R_thJA = 120 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED controller applications.

Compared with NCL30001DR2G and AP3768MTR-G1, the HVLED001ATR uniquely combines 800 V HVSU, PSR, and dual-dimming support in one SSO10 package - reducing bill-of-materials by up to 7 components and enabling compact, high-PF, single-stage 75 W designs that meet global lighting standards out-of-the-box.

Availability

HVLED001ATR is available at Aetrix Electronics and suitable for commercial indoor lighting, industrial high-bay fixtures, street lighting drivers, and architectural accent lighting requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for HVLED001ATR 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.

HVLED001ATR belongs to ST's LED lighting controller product line, engineered specifically for high-efficiency, high-power-factor offline LED drivers - targeting regulatory compliance, design simplification, and robust field operation in harsh environments.

FAQ

What is the maximum output power supported by HVLED001ATR in single-stage versus two-stage topologies?

HVLED001ATR supports up to 75 W in single-stage high-power-factor flyback configurations and up to 150 W in two-stage architectures (e.g., front-end PFC + isolated flyback). This distinction arises from thermal limits and PSR accuracy degradation beyond 75 W in single-stage designs due to input voltage ripple coupling into regulation. The datasheet validates both ratings with test reports at full load and 40°C ambient.

How does the HVSU pin enable 800 V startup without external components?

The HVSU pin integrates a high-voltage lateral DMOS structure rated for 800 V breakdown. During startup, it sources 0.25–0.8 mA to charge the VCC capacitor through an internal current source, eliminating need for external high-voltage resistors or startup ICs. Once VCC reaches 13 V, the HVSU switches to high-impedance monitoring mode for input voltage sensing and protection triggering.

Can HVLED001ATR operate without an optocoupler in PSR mode?

Yes - HVLED001ATR supports true primary-side regulation using ZCD and internal PSR algorithms, allowing optocoupler-free operation for constant-voltage outputs. However, optocoupler connection is required for precise constant-current regulation and dimming feedback; FB pin remains active in PSR mode for burst control and fault detection.

What protection features are latched versus auto-recovering?

HVLED001ATR implements auto-recovering (non-latching) protection for brownout, optocoupler failure, and analog disable - all managed by the smart auto-restart timer (ART). Overcurrent (OCP), input overvoltage (I-OVP), and output overvoltage (oOVP) trigger immediate shutdown but recover automatically after fault removal and ART timeout (typically 2.5 s), ensuring no manual reset is needed in field deployments.