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MAX1553 Scheda tecnica(PDF) 7 Page - Maxim Integrated Products

Il numero della parte MAX1553
Spiegazioni elettronici  High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs
PDF  10 Pages
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Produttore elettronici  MAXIM [Maxim Integrated Products]
Homepage  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1553 Scheda tecnica(HTML) 7 Page - Maxim Integrated Products

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MAX1553/MAX1554
High-Efficiency, 40V Step-Up
Converters for 2 to 10 White LEDs
Maxim Integrated | 7
www.maximintegrated.com
MAX1553
MAX1554
ENABLE
CONTROL
CIRCUITRY
CONTROL
LOGIC
EN
VCC
LX
DRIVER
GND
OV
COMPARATOR
REF
OV
UVLO
1.25V
BANDGAP
REFERENCE
BIAS
GENERATOR
CURRENT
LIMIT
VLIM
REF
67k
Ω
128k
Ω
96k
Ω
110k
Ω
FB
BRT
SS
1.25V
MINIMUM
tOFF ONE-SHOT
MINIMUM
tON ONE-SHOT
ERROR
COMPARATOR
LX
SS
R1
10
Ω
R3
10k
Ω
R2
200k
Ω
VCC
FB
ON
OFF
BRT
GND
2.7V TO 5.5V
INPUT
C1
4.7
μF
C3
0.1
μF
C2
0.47
μF
25V
L1
47
μH
TOKO A920CY-470M
D1
CMDSH2-3
OV
EN
D2–D7
WHITE
LEDs
PWM
OR
DC CONTROL
MAX1553
C4
4700pF
LX
SS
R1
10
Ω
R3
10k
Ω
R2
330k
Ω
VCC
FB
ON
OFF
BRT
GND
2.7V TO 5.5V
INPUT
C1
10
μF
C3
0.1
μF
C2
0.47
μF
50V
L1
4.7
μH
MURATA LQH32C
D1
CMDSH1-60M
OV
EN
D2–D10
WHITE
LEDs
PWM
OR
DC CONTROL
MAX1553
C4
3300pF
Figure 1. Circuit with the MAX1553 Driving Six White LEDs
Figure 2. Circuit with the MAX1553 Driving Nine White LEDs at
Up to 15mA
Functional Diagram



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