A8513 ALLEGRO [Allegro MicroSystems], A8513 Datasheet - Page 21

• Manufacturer Part Number: A8513
• Description: Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A8513
V
IN
C
IN
Figure 22. Typical application showing boost configuration and PMOS disconnect switch implementation
Figure 23. Typical application showing SEPIC configuration
A
A
B
V
IN
R1 is used to provide a leakage path such that the OVP pin is above 100 mV during startup.
Otherwise the IC would assume the output is shorted to GND and would not proceed with soft start.
D2 is a blocking diode.
R1 is used to provide a leakage path such that the OVP pin is above 100 mV during startup.
Otherwise the IC would assume the output is shorted to GND and would not proceed with soft start.
= 9 to 16 V
V
C
R
C
IN
P
R
R1
ISET
Typical Application Drawings
A
C
R
Wide Input Voltage Range, High Efficiency
C
VDD
R7
ISET
VDD
VIN
VDD
FAULT
EN/PWM
ISET
L1
VIN
VDD
FAULT
EN/PWM
ISET
R1
A8513
L1
SW
GND
PAD
A
C
A8513
SW
GND
SW
PAD
COMP
OVP
LED
L2
D1
D1
COMP
C
D2
OVP
LED
P
Fault Tolerant LED Driver
R
R
B
OVP1
OVP2
C
P
R
R
OVP1
OVP2
R
C
C
Z
Z
VOUT
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
OUT
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
(Optional)
(Optional)
R
C
C
VOUT
Z
Z
OUT
(Optional)
(Optional)
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