Diodes Incorporated AL1692-20CS7-13

Overview

AL1692-20CS7-13 from Diodes Incorporated is a triac-dimmable LED controller/driver IC with integrated 600V/2A high-voltage MOSFET in SO-7 package, supporting up to 25W output power in buck-boost and flyback topologies. It delivers ±3% current sense tolerance, NEMA SSL6-compliant dimming down to 1%, and operates in boundary conduction mode (BCM) for EMI-friendly design across 120Vac and 230Vac mains inputs.

For engineers reviewing the AL1692-20CS7-13 datasheet, AL1692-20CS7-13 pinout, AL1692-20CS7-13 application, or AL1692-20CS7-13 equivalent, this device serves as a single-stage, single-winding LED driver solution requiring no auxiliary winding, with thermal foldback at +145°C, cycle-by-cycle OCP, and built-in OVP/OSP/OTP protections for reliable offline dimmable lamp designs.

Technical Context

The AL1692-20CS7-13 implements source-driver architecture with internal 600V/2A MOSFET, enabling direct high-side switching without external gate drivers. Its t_ON_MAX is set via external RT resistor (e.g., 51kΩ yields 5.4µs), and it uses zero-current detection (ZCD) for BCM operation without auxiliary winding sensing.

It features closed-loop constant-current control referenced to 0.4V internal V_REF, with FB pin monitoring output voltage for open-circuit protection at 4.0V typical, and CS pin clamping at 1.6V for precise peak-current limiting. Thermal foldback linearly reduces output current above +145°C junction temperature to sustain safe operation under thermal stress.

Key Specifications

Pinout & Package

AL1692-20CS7-13 is housed in a 7-pin SOIC (SO-7) package with gull-wing leads, optimized for high-voltage isolation and thermal dissipation in compact LED lamp modules. The drain (D) terminal is exposed on Pin 7 for direct connection to the high-side switch node.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AL1692S-13, the AL1692-20CS7-13 integrates the HV MOSFET to reduce BOM and layout complexity, while BP5609D offers lower cost but sacrifices dimming fidelity, protection coverage, and thermal resilience-making AL1692-20CS7-13 optimal for certified, globally compliant dimmable lamps.

Availability

AL1692-20CS7-13 is available at Aetrix Electronics and suitable for dimmable LED bulbs, retrofit lamp modules, and commercial T8 tubes requiring stable component supply, long-lifecycle support, and regulatory compliance (IEC 61000-3-2 Class C, NEMA SSL6).

Supply support for AL1692-20CS7-13 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and lighting applications.

The AL1692 product line targets high-efficiency, single-stage AC/DC LED drivers for mains-connected dimmable lamps, emphasizing integration, safety compliance, and seamless dimmer interoperability.

FAQ

What dimmer types does AL1692-20CS7-13 support?

AL1692-20CS7-13 supports both leading-edge (TRIAC) and trailing-edge (MOSFET-based) dimmers per NEMA SSL6, achieving smooth 1%–100% dimming without flicker or pop-on. Compatibility is enabled by adaptive t_{ON_MAX} control and passive bleeder support, verified across Lutron, Leviton, and Legrand models.

Does AL1692-20CS7-13 require an auxiliary winding?

No. AL1692-20CS7-13 uses zero-current detection (ZCD) on the drain pin to determine t_OFF, eliminating the need for an auxiliary winding. This reduces transformer complexity, lowers BOM cost, and improves reliability in compact lamp designs where winding space is constrained.

How is overvoltage protection implemented on AL1692-20CS7-13?

OVP is implemented via the FB pin, which monitors output voltage through a resistor divider. When FB voltage exceeds 4.0V (typical), the IC discharges the VCC capacitor, entering hiccup mode until the fault clears. This protects LEDs and downstream components during open-circuit or transient overvoltage events without external comparators.

What is the thermal foldback behavior of AL1692-20CS7-13?

At junction temperatures above +145°C (typical), AL1692-20CS7-13 linearly reduces its internal current reference voltage, proportionally decreasing LED output current. This prevents thermal runaway while maintaining partial illumination-critical for enclosed luminaires where airflow is restricted and ambient temperature exceeds 85°C.