Features
Applications
■ LED streetlights
■ LCD backlighting
■ Display lighting
■ Fast switching
■ Automatic reset
■ SMA package
■ Suitable for industrial lighting environments ■ Intrinsically safe lighting
■ RoHS compliant*
LSPxxxxAJR Series LED Shunt Protector
General Information
®
Bourns LSP Series protectors are electronic shunts that provide a current bypass
when an LED element in an LED series string fails open circuit. This ensures the
remaining string of LEDs will continue to function. There are many cases where high
reliability of the LED lighting must be maintained, such as LCD backlighting, transport
lighting, avionics, intrinsically safe and low maintenance lighting.
Anode
LSPxx00
Control
Circuit
The LSPxxxAJR Series is available in surface mount package DO-214AC (SMA) size
format.
Cathode
Absolute Maximum Ratings (@ T = 25 °C Unless Otherwise Noted)
A
Rating
Symbol
Value
Unit
LSP0600
6
LSP0900
LSP1300
LSP1800
9
Repetitive peak off-state voltage
V
V
DRM
13
18
Average on-state current (Note 1)
Operating junction temperature
Storage temperature
I
T
T
1
A
T
J
s
-40 to +150
-65 to +150
260
°C
°C
°C
Lead temperature, soldering (10 s)
Notes:
1. Using 75 mm x 75 mm 4-Layer PCB (EIA/JESD51-7).
Electrical Characteristics (@ T = 25 °C Unless Otherwise Noted)
A
Parameter
Test Conditions
= V
Min.
Nom.
Max.
10
Unit
µA
I
Repetitive peak off-state current
V
DRM
D
DRM
LSP0600
LSP0900
LSP1300
LSP1800
6
9
16
18
26
33
dv/dt = 750 V/ms,
= 300
V
Breakover voltage
V
(BO)
R
13
18
SOURCE
I
I
V
Holding current
Breakover current
On-state voltage
I
= 1 A, di/dt = 30 mA/ms
T
5
30
mA
mA
V
H
BO
T
di/dt = 0.8 A/ms
= 1 A
75
1.2
I
T
Thermal Characteristics (@ T = 25 °C Unless Otherwise Noted)
A
Parameter
Test Conditions
Min.
Nom.
Max.
Unit
EIA/JESD51-3 PCB, I = 350 mA,
T
Junction to free air thermal resistance
230
°C/W
T = 25 °C
A
EIA/JESD51-7, 75 mm x 75 mm 4-Layer
Junction to free air thermal resistance
90
°C/W
PCB, I = 1.0 A, T = 25 °C
T
A
JANUARY 2012 – REVISED FEBRUARY 2012
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.