MAX16831_09 Datasheet, PDF (16/19 Pages) Maxim Integrated Products – High-Voltage, High-Power LED Driver with Analog and PWM Dimming Control

High-Voltage, High-Power LED Driver with
Analog and PWM Dimming Control
Functional Diagram
V_CC
CLMP
HI
CS- CS+ LO
UVEN
UVLO
AND
EN
5V
REG1
7V
REG2
CLMP
-
CSA
V_CLMP
V_LO
REG2
QGND
REG1
REF
THERMAL
SHUTDOWN
-
V_BUF
+
3.0V
RTSYNC
CLKOUT
OSC
OSC
V_{OV -}
OVP
OV
+
DIM
AGND
+
COMP
- _200mV + _-
200Hz
R_LS
SLOPE
COMP
SLOPE
UGB
OC
POR
EN
OV
+
CMP _{1.3 x VSS}
-
CONTROL
BLOCK
V_CLMP
DDR
V_LO
V_CLMP
10uA
DGT
TRI
CS
DRI
DRIVER
DRV
MAX16831
+
ILIM _-
- ^200mV
+
HIC ^-
-
300mV
BLANKING
TIME
40ns
SGND
SNS+
SNS-
INTERNAL
TRIM
V_OV
SS
X1
V_SS
PWM
- ^600mV +
SLOPE
EAMP
COMP
FB
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