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3 / 21 page UM10406 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. User manual Rev. 01 — 3 August 2010 3 of 21 NXP Semiconductors UM10406 SSL1523 5 W LED driver 1. Introduction 1.1 General description The SSL1523 5 W LED driver is a high performance solution for a professional non-dim- mable application with multiple high power LEDs, that requires galvanic isolation and a safe output voltage. It can generate a regulated output current with an output power of up to 5 W, which is equal to a 25 W incandescent lamp (at 63 Lumen/W). Examples are shelf lighting, down lighting, LED lighting for bathrooms etc. This device can also be used with less external components in an application, if some performance compromises can be accepted. Details of a solution with less external components are given in the application note AN10925. 2. Specification Table 1 shows the specification for the SSL1523 5 W LED driver. WARNING Lethal voltage and fire ignition hazard The non-insulated high voltages that are present when operating this product, constitute a risk of electric shock, personal injury, death and/or ignition of fire. This product is intended for evaluation purposes only. It shall be operated in a designated test area by personnel that is qualified according to local requirements and labor laws to work with non-insulated mains voltages and high-voltage circuits. This product shall never be operated unattended. Table 1. Specification Parameter Specification Comment AC line input voltage 100 V (AC) to 254 V (AC) board has been optimized for 230 V (AC) or 120 V (AC) ± 10 % variation Output voltage (LED voltage) 19 V (nominal): 12 V to 25 V range - Output voltage protection 33 V (DC) - Output current (LED current) 200 mA up to 250 mA adjustable with potentiometer Input voltage/load current dependency ± 1 % in the range 100 V (AC) to 130 V (AC) ± 1 % in the range 210 V (AC) to 254 V (AC) the maximum output power is not exceeded Output voltage/load current dependency ± 4 %/Volt in regulated range the maximum output power is not exceeded; see graphs Figure 9 and Figure 10. Current ripple ± 75 mA ± 30 % at 250 mA Maximum output power (LED power) 5 W at Vout = +19 V Efficiency >80 % at Tamb = 25 °C, Vout = +19 V; see graphs Figure 11 and Figure 12. Power Factor: 120 V (AC) 0.98 at 5 W output power; 19 V, Vout = +19 V 230 V (AC) 0.90 Switching frequency 90 kHz to 110 kHz - |
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