BCR420UW6 Datasheet, PDF (4/13 Pages) Diodes Incorporated – LINEAR LED CONSTANT CURRENT REGULATOR IN SOT26

BCR420UW6 / BCR421UW6
Typical Thermal Characteristics BCR420/1U (@TA = +25°C, unless otherwise specified.)
1.4
1.2
1.0
50mm * 50mm
1oz Cu
0.8
0.6
0.4
25mm * 25mm
1oz Cu
0.2
0.0
0
50
100
150
Temperature (^oC)
Derating Curve
125
100
T =25oC
amb
50mm * 50mm
1oz Cu
75 _D=0.5
50
D=0.2
Single Pulse
25
D=0.05
D=0.1
0
100μµ 1m 10m 100m 1 10 100 1k
Pulse Width (s)
Transient Thermal Impedance
150
125
T =25oC
amb
25mm * 25mm
100
1oz Cu
D=0.5
75
50 ^D=0.2
Single Pulse
25
D=0.05
D=0.1
0
100µμ 1m 10m 100m 1 10 100 1k
Pulse Width (s)
Transient Thermal Impedance
800
700
600
500
400
300
200
100
0
100
1000
Copper Area (mm²)
Rth(JA) VS Cu Area
10
T =25oC
amb
Single Pulse
50mm * 50mm
1oz Cu
1
100μµ 1m 10m 100m 1 10 100 1k
Pulse Width (s)
Pulse Power Dissipation
10
T =25^oC
Single Pulse
amb
25mm * 25mm
1oz Cu
1
100μµ 1m 10m 100m 1 10 100 1k
Pulse Width (s)
Pulse Power Dissipation
BCR420UW6 / BCR421UW6
Document number: DS37667 Rev. 4 - 2
4 of 13
www.diodes.com
June 2016
© Diodes Incorporated