A8512 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A8512' PDF : 18 Pages View PDF
A8512
LED Backlight Driver for LCD Monitors and Televisions
VBAT
24 to 48 V
C1 C2
L1
D1
Q1
RSC ROVP
C3 C4
VOUT 36 LEDs per string
P
P
P
VIN
12 V
R1
DRIVER SENSE1 SENSE2 OVP
VIN
VBIAS
VREG7V
C5
FAULT
EN
A8512
C6
LED1
PWM
LED2
R2
R3
RFSET
RISET
COMP
FSET
ISET
LED3
LED4
Rz1
LED5
Cz1
LED6
AGND AGND LGND LGND PGND
P
R2, R3 optional (A8512 has
internal pull-down resistors)
Figure 15. Typical high-voltage application circuit with single controller; VIN pin separate from VBAT.
VOUT 18 LEDs per string
VBAT
12 to 48 V
C1 C2
L1
D1
Q1
RSC ROVP
C3 C4
P
P
P
VIN
12 V
R1
C5
R2
R3
RFSET
RISET
Rz1
DRIVER SENSE1 SENSE2 OVP
VIN
VBIAS
FAULT
EN
PWM
COMP
FSET
ISET
VREG7V
A8512
LED1
LED2
LED3
LED4
LED5
C6
Cz1
LED6
AGND AGND LGND LGND PGND
P
R2, R3 optional (A8512 has
internal pull-down resistors)
Figure 16. Typical medium-voltage application circuit driving high-current (up to 160 mA) LED strings.
Allegro MicroSystems, Inc.
15
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Share Link: 
