MAX16804ATP+ Maxim Integrated Products, MAX16804ATP+ Datasheet

LED Drivers IC LED DRIVER HIGH BRIGHT

MAX16804ATP+

Manufacturer Part Number
MAX16804ATP+
Description
LED Drivers IC LED DRIVER HIGH BRIGHT
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX16804ATPT.pdf (10 pages)

Specifications of MAX16804ATP+

Low Level Output Current
35 mA
High Level Output Current
350 mA
Operating Supply Voltage
5.5 V to 40 V
Maximum Power Dissipation
2758.6 mW
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
TQFN-20
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16804 current regulator operates from a 5.5V to
40V input voltage range and delivers 35mA to 350mA to
one or more strings of high-brightness LEDs (HB LEDs).
The output current of the MAX16804 is set by using an
external current-sense resistor in series with the LEDs. A
dual-mode DIM pin and on-board 200Hz ramp generator
allow PWM dimming with an analog or PWM input signal.
The analog control signal at dimming input DIM allows for
a theater-dimming effect to be implemented. Fast turn-on
and turn-off times ensure a wide-range PWM operation,
while wave-shaping circuitry minimizes EMI. The differen-
tial current-sense input increases LED current accuracy
and noise immunity. The MAX16804 is well suited for
applications requiring high-voltage input and is able to
withstand automotive load-dump events up to 45V. An
on-board pass element minimizes external components
while providing 3% output-current accuracy. Additional
features include a 5V regulated output and short-circuit
and thermal protection.
The MAX16804 is available in a thermally enhanced,
5mm x 5mm, 20-pin TQFN package and is specified over
the automotive -40°C to +125°C temperature range.
19-0589; Rev 1; 5/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
0.1μF
+5.5V TO +40V
Automotive Interior: Map, Dome, and Courtesy
Lighting
Automotive Exterior:
Warning Lights for Emergency Vehicles
Navigation and Marine Indicators
Signage, Canopies, and Beacons
V5
Rear Combination Light (RCL)
Daytime Running Light (DRL)
Adaptive Front Light
ANALOG CONTROL PWM DIMMING
IN
EN
DIM
________________________________________________________________ Maxim Integrated Products
MAX16804
General Description
GND
High-Voltage, 350mA LED Driver with
OUT
CS+
CS-
V5
Analog and PWM Dimming Control
Applications
+5V REG
ILED
0.1μF
R
LEDs
SENSE
o Flexible Dimming Control, Analog or PWM
o 200Hz On-Board Ramp Generator
o Syncs to External PWM Signal (Up to 2kHz)
o 5.5V to 40V Operating Range
o 35mA to 350mA Adjustable LED Current
o 3% LED Current Accuracy
o High-Voltage (Up to 40V) DIM Pin
o Integrated Pass Element with Low-Dropout
o Additional +5V On-Board Regulator with 2mA
o Differential LED Current Sense
o Low 200mV Current-Sense Reference Reduces
o Wave-Shaped Edges Minimize EMI During PWM
o Output Short-Circuit and Thermal-Shutdown
o Available in Small, Thermally Enhanced,
o -40°C to +125°C Operating Temperature Range
+ Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.
Pin Configuration appears at end of data sheet.
MAX16804ATP+
Control Signal for PWM and Theater Dimming
Voltage (0.5V typ)
Capability
Power Losses
Dimming
Protection
5mm x 5mm, 20-Pin TQFN Package
0.1μF
PWM DIMMING
+5.5V TO +40V
PART
IN
EN
DIM
PWM CONTROL DIMMING
MAX16804
-40°C to +125°C
Ordering Information
TEMP RANGE
Simplified Diagrams
GND
OUT
CS+
CS-
V5
+5V REG
20 TQFN-EP*
ILED
PIN-PACKAGE
0.1μF
Features
R
LEDs
SENSE
1

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MAX16804ATP+ Summary of contents

Page 1

... Output Short-Circuit and Thermal-Shutdown Protection o Available in Small, Thermally Enhanced, 5mm x 5mm, 20-Pin TQFN Package Applications o -40°C to +125°C Operating Temperature Range PART MAX16804ATP+ + Denotes a lead-free/RoHS-compliant package Exposed pad. Pin Configuration appears at end of data sheet. ILED +5.5V TO +40V +5V REG 0.1μF LEDs 0.1μ ...

Page 2

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control ABSOLUTE MAXIMUM RATINGS IN to GND ...............................................................-0.3V to +45V DIM, OUT GND .................................-0. Slew Rate (20V < V < 45V) ...................................250mV/µ ...

Page 3

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control ELECTRICAL CHARACTERISTICS (continued 12V 0.1µ CS- = GND +125°C, unless otherwise noted. Typical values are ...

Page 4

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control (V = 12V 0.1µ otherwise noted.) DROPOUT VOLTAGE vs. TEMPERATURE 1 12V IN 0 ...

Page 5

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control (V = 12V 0.1µ otherwise noted.) OUTPUT CURRENT DUTY CYCLE vs. ANALOG DIM VOLTAGE 120 V = 12V ...

Page 6

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control TRIMMED EN BANDGAP MAX16804 GND 200Hz RAMP GENERATOR DIM Detailed Description The MAX16804 is a high-current regulator capable of providing up to 350mA of current to one or more strings ...

Page 7

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control The dimming feature can be used for LED brightness adjustment (see the Simplified Diagrams ) and theater dimming external PWM signal is used, the theater- dimming effect can ...

Page 8

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control LED Current Thermal Foldback With a minimum number of external components, the MAX16804 provides LED current thermal foldback using a negative temperature coefficient (NTC) thermis- tor. Figure 3 shows a ...

Page 9

High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control ANALOG OR PWM CONTROL SIGNAL Pin Configuration TOP VIEW GND 16 DIM 17 N.C. 18 MAX16804 OUT 1 ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products ...

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