MAX16814_11 Datasheet, PDF (10/25 Pages) Maxim Integrated Products – Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller

Integrated, 4-Channel, High-Brightness LED Driver
with High-Voltage Boost and SEPIC Controller
FLT
RSDT
DRV
NDRV
PGND
RT
CS
COMP
IN
VCC
EN
MAX16814
SHDN
PWM
LOGIC
FAULT FLAG
LOGIC
TSHDN
SHORT LED
DETECTOR
CLK
SLOPE
COMPENSATION
RAMP/RT OSC
(
di
dt
1.8V
= 50FA x fsw)
ILIM
0.425V
CS BLANKING
THERMAL
SHUTDOWN
TSHDN
g_M
REF
FB
OVP
COMP
VBG
UVLO
UVLO
BANDGAP
VBG = 1.235V
LOGIC
(REF/FB
SELECTOR)
5V LDO
REGULATOR
TSHDN
SS_REF
VREF
SS_DONE
POK SOFT-START
100ms
POKD
SHDN
VBG
1.23V
TSHDN
SHDN
SGND
OVP
VREF
POKD
OPEN-LED
DETECTOR
UNUSED
STRING
DETECTOR
MIN STRING
VOLTAGE
LOGIC
SHDN
P
SGND
SETI
OUT_
R
LEDGND
DIM
Figure 1. Simplified Functional Diagram
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