ZLED7x30 Datasheet

14

April 20, 2016

Vin

I SENSE

LX

GND

ZLED7X30

D1

LED

String

Vs = 8.5 to 40 VDC

(C3)

Rs

L1

33 to 220 µH

C2

0.1µF

DIM1

DIM2

GND/Floating

GND/Floating

Switch

C1

≥220µF

Vin

I SENSE

LX

GND

ZLED7X30

D1

LED

String

Vs = 8.5 to 40 VDC

(C3)

Rs

L1

33 to 220 µH

C2

0.1µF

DIM1

DIM2

(C1)

3

Application Circuit Design

3.1

Applications

The ZLED7x30 is designed for applications requiring features such as high-speed switching, variable brightness

control, operation with voltages up to 40V, high efficiency, or protection from over-temperature, or open LED circuit

conditions.

Typical applications include MR16/MR11 LED spot lights, LED street lights, parabolic aluminized reflector (PAR) LED

lights, and other general purpose industrial and consumer LED applications.

Figure 3.1 shows the minimum configuration for switch dimming applications. Figure 3.2 demonstrates the basic

application circuit with the additional capacitors C1 and C3 for enhanced performance. For dimensioning of the

current sense resistor, see section 2. An example of operation with a halogen lamp electronic transformer is shown in

Figure 3.3.

Figure 3.1

ZLED7x30 Application Circuit for Switch Dimming

Figure 3.2

Basic ZLED7x30 Application Circuit with Output Current Determined only by Rs