A8501KLPTR-B データシートの表示（PDF） - Allegro MicroSystems
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A8501KLPTR-B Datasheet PDF : 24 Pages
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A8501
2 MHz, 4 Channel×100 mA WLED/RGB Driver
with Output Disconnect
Functional Block Diagram
BIAS
FSET
VIN
Regulator
Bias Supply
Internal
Supply
OSC
Boost
SW SW SW
OVP CAP
Overvoltage
Comparators
Overcurrent
Comparators
Charge
Pump
OUT
PGND
COMP
Feedback
Control
Current Sinks
LED1
SEL1
SEL2
EN
100 kΩ
Device
Control
Open LED Detect
and Disconnect
Shorted LED Detect
VTO
VTI
OVP Fault
2.46 V ÷2 1.23 V
References
Minimum +
Select
–
LED Current
Reference
÷4
ISET
100 kΩ
LED2
LED3
LED4
PAD
AGND PGND PGND PGND LGND DGND DIM
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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