MAX16839ATT+T Maxim Integrated Products, MAX16839ATT+T Datasheet - Page 7

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MAX16839ATT+T

Manufacturer Part Number
MAX16839ATT+T
Description
IC LED DRIVER 100MA 6-TDFN
Manufacturer
Maxim Integrated Products
Type
HBLED Driverr
Datasheet

Specifications of MAX16839ATT+T

Constant Current
Yes
Topology
Linear, Open Drain, PWM
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Automotive
Type - Secondary
High Brightness LED (HBLED)
Voltage - Supply
5 V ~ 40 V
Mounting Type
Surface Mount
Package / Case
6-TDFN Exposed Pad
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
100mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Frequency
-
Internal Switch(s)
-
Efficiency
-
Lead Free Status / Rohs Status
 Details
The MAX16839 programmable current regulator oper-
ates from a 5V to 40V input voltage range and features
an open-drain, constant current-sink output capable of
sinking up to 100mA. The MAX16839 directly withstands
automotive load-dump events of up to 45V.
A single resistor-programmable output current and on-
board pass element minimize the number of external
components while providing Q5% output current accuracy.
The MAX16839 includes a dimming input that controls
the duty cycle of the output current, allowing a wide LED
dimming range to be implemented. In addition, the dim-
ming input functions as an on/off control of the output
current. In multiple LED-string applications, the dimming
input synchronizes the LED current-sink turn-on, ensur-
ing simultaneous brightness in LED strings.
Figure
1. Internal Block Diagram
High-Voltage, Linear High-Brightness LED
DIM
IN
_______________________________________________________________________________________
Detailed
30µA
1mA
THERMAL
SHDN
Driver with Open-LED Fault Detect
Description
GENERATOR
REFERENCE
5V REG
ENABLE
FAULT
5V
GND
1.65V
Additional features include thermal protection and an
open-LED detection output that can turn off multiple LED
strings simultaneously. See Figure 1.
The MAX16839 has an integrated open-LED detection
that reduces external components required to imple-
ment this function. The following conditions enable the
open-LED detection feature:
U FLTS not connected to ground
U V
U Thermal Shutdown Inactive
U V
MAX16839
I
REG
OPEN-LED
IN
DIM
DETECT
> V
= High
INTH
(7.38V) (typ)
IN
15V CLAMP
Fault Event Status Memory
Open-LED Detection and
2.8mA
SINK
CS
FLTS
7

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