TLD5085EJ Datasheet, PDF (6/16 Pages) Infineon Technologies AG – 1.8A DC/DC Step-Down Converter Infineon Power LED Driver

TLD5085EJ
General Product Characteristics
4.2
Functional Range
Pos. Parameter
Symbol
Limit Values
Unit
Min.
Max.
4.2.1 Supply Voltage
V_S
4.75
45
V
4.2.2 Output Voltage adjust range
V_CC
0.60
16
V
4.2.3 External buck inductor
L_BU
18
56
µH
4.2.4 External buck capacitor
C_BU1
33
120
µF
4.2.5 External buck capacitor ESR
ESR_BU1 –
0.3
Ω
4.2.6 Junction Temperature
T_j
-40
150
°C
1) See section ““Application Information” on Page 11” for loop compensation requirements.
Conditions
–
see Figure 5
see Figure 5 and
Figure 6
– ¹⁾
–
Note: Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
4.3
Thermal Resistance
Note: This thermal data was generated in accordance with JEDEC JESD51 standards.
For more information, go to www.jedec.org.
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
4.3.1 Junction to Case
R_thJC
–
4.3.2 Junction to Ambient (2s2p)
R_thJA
–
1) Not subject to production test, specified by design.
–
10
K/W ^{1) 2)}
42
–
K/W ^{1) 3)}
2) Specified R_thJC value is simulated at natural convection on a cold plate setup (all pins and the exposed pad are fixed to
ambient temperature). Ta=25°C, power-switch is dissipating 1W.
3) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product
(Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).
According to JESD51-5 a thermal via array under the exposed pad contacted the first inner copper layer. Ta=25°C, power-
switch is dissipating 1W.
Datasheet
6
Rev. 1.0, 2009-06-04