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AN2259 Datasheet(PDF) 25 Page - STMicroelectronics

Part # AN2259
Description  High intensity LED driver using
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2259 Datasheet(HTML) 25 Page - STMicroelectronics

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AN2259
6 REFERENCE DESIGN VERSIONS
25/38
Table 6.
6 to 12Vdc Input 1W LED Driver Bill of Materials
Qty
Reference
Part
Description
Mfg P/N
Mfg
Geometry
Mtg
1C1
27uF/50V
Electrolytic
EEU-
FC1H270
Panasonic
Radial
TH
1C2
220pF/50V
Ceramic
SMD
2C3, C4
22nF/50V
Ceramic
SMD
1C5
4.7nF/50V
Ceramic
SMD
2D2, D6
Schottky Diode
1A/40V
STPS1L40A
STMicroelectronics
SMA
SMD
1D7
Jumper at D7
position
SMD
1
L1
47uH Inductor
DO3308P-473
Coilcraft
9.4mmx12.95mm SMD
1
Q1
PNP Transistor
MMBT3906
STMicroelectronics
SOT-23
SMD
1
Rs
0.68 Ohm 1%
1206
SMD
1
R1
2.74k 1%
0805
SMD
1
R2
1.30k 5%
0805
SMD
1
R3
4.7k 5%
0805
SMD
1
R4
240k 5%
0805
SMD
1U1
Step-down
controller
L5970D
STMicroelectronics
SO8
SMD



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