MAX16810 Maxim Integrated Products, MAX16810 Datasheet - Page 12

• Manufacturer Part Number: MAX16810
• Description: (MAX16809 / MAX16810) Integrated 16-Channel LED Drivers
• Manufacturer: Maxim Integrated Products

cathode of a string of LEDs connected in series. The
constant-current capability is up to 55mA per output,
set for all 16 outputs by an external resistor, R
devices can operate in a stand-alone mode (see the
Typical Operating Circuits ).
The MAX16810 includes circuitry that automatically
detects open-circuit LEDs. Fault status is loaded into the
serial-interface shift register when LE goes high and is
Integrated 16-Channel LED Drivers with
Switch-Mode Boost and SEPIC Controller
Figure 1a. Internal Block Diagram (MAX16809)
12
COMP
AGND
CLK
DIN
CS
FB
OE
LE
______________________________________________________________________________________
SHUTDOWN
THERMAL
MAX16809
D0
D0
D0
D1
D1
D1
D2
D2
D2
VEA
D3
D3
D3
DELAY
REFERENCE
D4
D4
D4
2.5V
300mV
D5
D5
D5
REG_OK
I
LIM
SET
D6
D6
D6
PREREG
2R
SERIAL-TO-PARALLEL SHIFT REGISTER
5V
. The
CONSTANT-CURRENT SINK
D7
D7
D7
R
OUTPUT LATCHES
CPWM
SHUTDOWN
THERMAL
D8
D8
D8
automatically shifted out on DOUT when the next data
transmission is shifted in. The MAX16810 also features a
watchdog that monitors activity on the CLK, DIN, and LE
inputs (see the Watchdog (MAX16810) section). The
number of channels can be expanded by using the
MAX6970 and MAX6971 family in conjunction with the
MAX16809 and MAX16810.
CLK
UVLO
D9
D9
D9
EN_REF
BG
SNS
OSC
VOLTAGE
DIVIDER
5V REG
D10
D10
D10
V
Q
DD
S
R
D11
D11
D11
Q
VOLTAGE-
D12
D12
D12
DIVIDER
D13
D13
D13
26.5V
V
CC
D14
D14
D14
D15
D15
D15
POWER-ON
PGND
REFERENCE
CURRENT
RESET
V+
V
REF
OUT
RTCT
DOUT
V+
SET
CC