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STLD20D Datenblatt(PDF) 6 Page - STMicroelectronics

Teilenummer STLD20D
Bauteilbeschribung  White LED power supply
PDF  31 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STLD20D Datenblatt(HTML) 6 Page - STMicroelectronics

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Block diagram
STLD20D
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Note:
The external components proposal should be considered as a design reference guide.The
performances mentioned in the electrical characteristics table are not guaranteed for all the
possible electrical parameters of the components included in this list. On the other hand the
operation of STLD20D is not limited with the use of components included in this list.
Figure 3.
Basic connection
Table 1.
External components proposal
Symbol
Parameter
Test conditions
Value
Unit
Min.
Typ.
Max.
RLED
LED current resistance
15
Ω
CIN
Input filtering capacitor
Ceramic type
2.2
µF
COUT
Output capacitance
1
L
Boost inductor (height < 2mm)
Inductance
10
µH
Resistance at 500kHz
1
Ω
ISAT (RSET = 100kΩ)
300
mA
D
Boost diode
(STMicroelectronics STPS1L40M type)
VRRM
40
Vdc
IF (peak forward current)
1
A
VF @ IF = 1A Tj = 25°C
0.40
0.46
V



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