A6268 Datasheet, PDF (4/19 Pages) Allegro MicroSystems – The A6268 is a DC-to-DC converter controller, providing a programmable constant current output for driving high power LEDs in series.

A6268
Automotive High Current LED Controller
Functional Block Diagrams
R_SL
VBAT
Buck-Boost
VREG
VIN
V_REG
LN
LP
AL
LF
LA
LED Open and
Short Detect
Shut-
AE
FF2
Fault
Detect
down

AC
SG
FF1
RQ
S
Control
EN
Logic
I_REF

Temp
Monitor
Slope
Gen
SP
AS
SN
R_SS
Osc
GND
IREF
OSC
R_OSC
CKOUT
VBAT
Boost
VREG
VIN
V_REG
LN
LP
AL
LF
LA
LED Open and
Short Detect
Shut-
AE
FF2
Fault
Detect
down

AC
SG
FF1
RQ
S
Control
EN
Logic
I_REF

SP
R_SS
AS
SN
Temp
R_SL
Monitor
Slope
Gen
Osc
GND
IREF
OSC
R_OSC
CKOUT
AL AE AC AS See Functional Description section.
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com