This is information on a product in full production.

March 2012

Doc ID 022950 Rev 1

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LBP01

LED bypass protection

Datasheet

Features

■

Bidirectional device: LBP01-0810B

■

Unidirectional device: LBP01-0803SC5

■

RoHS compliant

Benefits

■

Keep LED strings on in case of LED open

mode failure

■

Reduced maintenance cost

■

Increase lifetime of the lighting system

Complies with the following standards:

■

IEC61000-4-2 level 4

– ±15 kV (air discharge)

– ±8 kV (contact discharge)

■

IEC 61000-4-5

– ±1kV / 24 A

Applications

This device shunts failed LEDs in applications

where LED strings can not be turned-off for safety

reason due to a LED failure. Main applications

are:

■

Automotive headlights

■

Traffic lights

■

Aircraft runaway lights

■

Emergency lighting systems

■

Display panel backlighting

■

Street lighting

Figure 1.

Functional diagrams

Description

The LBP01 series are bypass switches to be

connected in parallel with 1 or 2 LEDs. In case of

LED failure, this allows the current to flow through

the other LEDs.

It also provides an overvoltage protection against

surges defined in IEC 61000-4-2 and

IEC 61000-4-5

Their robust dice also protect LEDs against surge.

These devices are compatible with LEDs up to

1A.

LBP01 are packaged either in SMB or SOT23-5L

SMB

(DO-214AA)

LBP01-0810B

SOT23-5L

LBP01-0803SC5

Control

circuit

Control

circuit

1

3

5

4

2

LBP01-0803SC5

LBP01-0810B

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