SSL21083AT1,118 NXP

SSL21081/SSL21083 Compact non-dimmable LED driver IC Rev. 5 11 October 2012 Product data sheet 1. General description The SSL21081/SSL21083 are a range of high-voltage Integrated Circuits (ICs) for driving LED lamps in general mains non-dimmable lighting applications. The main benefits of these products are: Small Printed-Circuit Board (PCB) footprint, and compact solution High efficiency (up to 95 %) Ease of integration Low electronic Bill Of Material (BOM) These ICs incorporate a 300 V or 600 V MOSFET. The ICs work as boundary conduction mode converters, typically in buck configuration. The IC range has been designed to start up directly from the HV supply by an internal high-voltage current source. Thereafter, the dV/dt supply is used with capacitive coupling from the drain, or any other auxiliary supply. This function provides full flexibility in the application design. The IC consumes 1.3 mA of supply current with an internal clamp limiting the supply voltage. The ICs provide accurate output current control with LED current accuracy within 5 %. The ICs can be operated using Pulse-Width Modulation (PWM) current regulation and has many protection features including easy LED temperature feedback. 2. Features and benefits LED driver ICs for driving LED strings from a rectified mains supply High-efficiency switch mode buck driver product family: SSL21081AT/SSL21081T: drivers with integrated 300 V (DC) power switches SSL21083AT/SSL21083T: drivers with integrated 600 V (DC) power switches Controller with power-efficient boundary conduction mode of operation with: No reverse recovery losses in freewheel diode Zero Current Switching (ZCS) for turn-on of switch Zero voltage or valley switching for turn-on of switch Minimal required inductance value and size Direct PWM current regulation possible Fast transient response through cycle-by-cycle current control: Negligible AC mains ripple at LED current and minimal total capacitor valueSSL21081/SSL21083 NXP Semiconductors Compact non-dimmable LED driver IC No over or undershoots in the LED current No binning on LED forward voltage required Internal Protections: UnderVoltage LockOut (UVLO) Leading-Edge Blanking (LEB) OverCurrent Protection (OCP) Short-Winding Protection (SWP) SSL21081T/SSL21083T only Internal OverTemperature Protection (OTP) Brownout protection Output Short Protection (OSP) Low component count (see Figure 3) LED driver solution: No Schottky diode required due to ZCS No dim switch and high-side driver required for PWM current regulation Easy external temperature protection with a single NTC resistor Option for soft-start function 1 Compatible with wall switches with built-in indication light during standby IC lifetime easily matches or surpasses LED lamp lifetime 3. Applications SSL21081/SSL21083 products are intended for compact mains non-dimmable LED lighting applications with accurate fixed current output for single mains input voltages. Mains input voltages include 100 V (AC), 120 V (AC) and 230 V (AC). The output signal can be modulated using a PWM signal. 1. The Hotaru switch is a well known wall switch with built-in light SSL21081 SSL21083 All information provided in this document is subject to legal disclaimers. NXP B.V. 2012. All rights reserved. Product data sheet Rev. 5 11 October 2012 2 of 22