UM10406

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© 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)

210 V (AC) to 254 V (AC)

the maximum output power is not exceeded

Output voltage/load current dependency

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

Efficiency

>80

%

Figure 11 and Figure 12.

Power Factor:

120 V (AC)

0.98

230 V (AC)

0.90

Switching frequency

90 kHz to 110 kHz

-