MAX16839ATT/V+T Maxim Integrated, MAX16839ATT/V+T Datasheet - Page 6

• Manufacturer Part Number: MAX16839ATT/V+T
• Description: LED Lighting Drivers High-Voltage Linear High-Brightness LED Driver with LED Fault Open Detect
• Manufacturer: Maxim Integrated

Specifications of MAX16839ATT/V+T

• Input Voltage: 5 V to 40 V
• Maximum Supply Current: 15 mA to 100 mA

High-Voltage, Linear High-Brightness LED
Driver with Open-LED Fault Detect
( V
Typical values are at T
6
V
V
I
DIM
LED
FLT
IN
TDFN
______________________________________________________________________________________
= 12V, R
—
—
1
2
3
4
5
6
100Hz AT DIM
(100Hz, 50% DUTY CYCLE AT DIM)
FAULT INTEGRATION ON OPEN LED
PIN
CS
4, 5
SO
—
1
2
3
6
7
8
= 4.07I from CS to GND, C
4ms/div
A
NAME
FLTS
SINK
GND
N.C.
DIM
= +25NC.)
CS
EP
IN
MAX16839 toc15a
Positive Input Supply. Bypass with a 10nF (typ) capacitor to GND.
Dimming Input. Drive DIM high or leave unconnected to turn on the LED current-sink driver.
Drive DIM low to turn off the LED current-sink driver. In multiple LED-string applications, connect
all DIM inputs together to synchronize the LED current-sink turn-on.
LED Fault Memory. Connect a 0.1FF to 10FF capacitor from FLTS to ground. In multiple LED-
string applications, connect all FLTS pins together to have all strings latch off if one of them
opens (see Figure 2). Connect FLTS to ground to disable fault protection.
Ground
Current-Sense Input. Connect a current-sense resistor between CS and GND to program the
output current level.
LED Driver Current-Sink Output
No Connection. Not internally connected.
Exposed Pad. Connect EP to a large-area contiguous copper ground plane for effective power
dissipation. Do not use as the only IC ground connection. EP must be connected to GND.
5V/div
2V/div
500mA/div
FLTS
V
V
I
Typical Operating Characteristics (continued)
DIM
LED
FLT
= 0.1FF, C
(100Hz, 75% DUTY CYCLE AT DIM)
FAULT INTEGRATION ON OPEN LED
IN
= 0.1FF, DIM input unconnected, T
100µs/div
FUNCTION
MAX16839 toc15b
5V/div
2V/div
500mA/div
A
FAULT INTEGRATION ON OPEN LED
= +25NC, unless otherwise noted.
WITH SUPPLY CHOPPING
Pin Description
200Fs/div
MAX16839 toc16
V
200mV/div
V
5V/div
V
5V/div
CS
IN
FLTS