MAX16839ASA+ Maxim Integrated Products, MAX16839ASA+ Datasheet - Page 7

• Manufacturer Part Number: MAX16839ASA+
• Description: IC LED DRIVER 100MA 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: HBLED Driverr

Specifications of MAX16839ASA+

• 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: 8-SOIC (3.9mm Width) Exposed Pad, 8-eSOIC. 8-HSOIC
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 100mA
• Internal Switch(s): No
• Operating Supply Voltage: 5 V to 40 V
• Maximum Supply Current: 15 mA to 100 mA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Frequency: -
• Efficiency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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