Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLBP01-0803SC5

This is information on a product in full production.

March 2012 Doc ID 022950 Rev 1 1/8

LBP01

LED bypass protection

Datasheet − production data

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

LBP01-0803SC5

LBP01-0810B

www.st.com

Summary of content (8 pages)

PAGE 1
LBP01 LED bypass protection Datasheet − production data 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 SOT23-5L LBP01-0803SC5 SMB (DO-214AA) LBP01-0810B Figure 1.
PAGE 2
Characteristics LBP01 1 Characteristics Table 1. Absolute maximum ratings (Tamb = 25 °C) Symbol Parameter IEC 61000-4-2 contact discharge Unit 30 kV 24 A 0.35 A 1 A VPP Peak pulse voltage IPP Repetitive peak pulse current (8/20µs) IF On-state DC current Tj Operating junction temperature range -55 to 150 °C Storage temperature range -65 to 150 °C 260 °C SOT23-5L Tstg TL Table 2.
PAGE 3
LBP01 Ordering information scheme Figure 3. Thermal resistance, junction to ambient, versus copper area under each lead (SMB) Figure 2. 200 Rth(j-a)(°C/W) Thermal resistance, junction to ambient, versus copper area under each lead (SOT23-5L) Rth(j-a)(°C/W) 240 220 180 200 160 180 140 160 120 140 120 100 SCu(mm2) SCu(mm2) 100 80 0 20 40 60 80 100 120 140 160 180 200 0 2 Ordering information scheme Figure 4.
PAGE 4
Package information 3 LBP01 Package information ● Epoxy meets UL94, V0 ● Lead-free package In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Table 3. SMB dimensions Dimensions Ref. Millimeters E1 Inches Min. Max. Min. Max. A1 1.90 2.45 0.075 0.096 A2 0.
PAGE 5
LBP01 Package information Table 4. SOT23-5L dimensions Dimensions Ref. Millimeters Min. Typ. Max. c A1 q L H A E Inches Min. Typ. Max. A 0.90 1.45 0.035 0.057 A1 0 0.10 0.004 A2 0.90 1.30 0.035 0.051 b 0.35 0.50 0.014 0.020 c 0.09 0.20 0.004 0.008 D 2.80 3.05 0.11 0.118 E 1.50 1.75 0.059 0.069 0 e D b e e A2 Figure 7. 0.95 0.037 H 2.60 3.00 0.102 0.118 L 0.10 0.60 0.004 0.024 M 0° Footprint, dimensions in mm Figure 8.
PAGE 6
Recommendations on PCB assembly LBP01 4 Recommendations on PCB assembly 4.1 PCB design 1. To control the solder paste amount, the closed via is recommended instead of open vias. 2. The position of tracks and open vias in the solder area should be well balanced. The symmetrical layout is recommended, in case any tilt phenomena caused by asymmetrical solder paste amount due to the solder flow away. Figure 9. 4.2 Printed circuit board layout Reflow profile Figure 10.
PAGE 7
LBP01 5 Ordering information Ordering information Table 5. Ordering information Order code Marking Package Weight Base qty Delivery mode LBP01-0803SC5 XT08 SOT23-5L 16 mg 3000 Tape and reel SMB 0.11 g 2500 Tape and reel LBP01-0810B (1) L08 1. The marking can be rotated by 90° to differentiate assembly location. 6 Revision history Table 6. Document revision history Date Revision 20-Mar-2012 1 Changes Initial release.
PAGE 8
LBP01 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.