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| 型号： | MAX16809EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX16809 |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 40mA |
| 输出及类型： | 16，非隔离 |
| 输出电压： | 32V |
| 特点： | 可调光 |
| 输入电压： | 9 ~ 16 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX16809 |
ATION
EVALU
AVAIL
19-0656; Rev 2; 8/09
KIT
ABLE
Integrated 16-Channel LED Driver with
Switch-Mode Boost and SEPIC Controller
General Description
The MAX16809 is an integrated, high-efficiency white or
RGB LED driver. It is designed for LCD backlighting
and other LED lighting applications with multiple strings
of LEDs. The MAX16809 ’s current-mode PWM con-
troller regulates the necessary voltage to the LED array.
Depending on the input voltage and LED voltage
range, this device can be used with boost or buck-
boost (SEPIC) topologies.
The MAX16809 LED driver includes 16 open-drain, con-
stant-current-sinking LED driver outputs rated for 36V
continuous operation. The LED current-control circuitry
achieves ±3% current matching among strings and
enables paralleling of outputs for LED string currents
higher than 55mA. The output-enable pin is used for
simultaneous PWM dimming of all output channels.
Dimming frequency range is 50Hz to 30kHz and dim-
ming ratio is up to 5000:1. The constant-current outputs
are single resistor programmable and the LED current
can be adjusted up to 55mA per output channel.
The MAX16809 operates either in stand-alone mode or
with a microcontroller (μC) using an industry-standard, 4-
wire serial interface.
The MAX16809 includes overtemperature protection,
operates over the full -40°C to +125°C temperature
Features
? 16 Constant-Current Output Channels (Up to
55mA Each)
? ±3% Current Matching Among Outputs
? Paralleling Channels Allows Higher Current per
LED String
? Outputs Rated for 36V Continuous Voltage
? Output-Enable Pin for PWM Dimming (Up to 30kHz)
? One Resistor Sets LED Current for All Channels
? Wide Dimming Ratio Up to 5000:1
? Low Current-Sense Reference (300mV) for High
Efficiency
? 8V to 26.5V Input Voltage or Higher with External
Biasing Devices
? 4-Wire Serial Interface to Control Individual
Output Channels
Applications
LCD White or RGB LED Backlighting:
LCD TVs, Desktop, and Notebook Panels
Automotive Navigation, Heads-Up,
and Infotainment Displays
Industrial and Medical Displays
Ambient, Mood, and Accent Lighting
Ordering Information
range, and is available in a 5mm x 7mm thermally
enhanced, 38-pin TQFN exposed paddle package.
PART
MAX16809ATU+
TEMP RANGE
-40°C to +125°C
PIN-PACKAGE
38 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configuration appears at end of data sheet.
Typical Operating Circuits
V IN
L
C OUT
V OUT
Q1
R CS
C C2
R1
LEDs
C C1
R C1
R2
OUT CS AGND
V CC
COMP
FB
3V TO 5.5V
C IN
C BYP
V+
PGND
OUT0
OUT1
OUT2
OUT3
R SET
LE
DIN
CLK
DOUT
OE
SET
C REF
REF
MAX16809
R T
RTCT
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
C T
STAND-ALONE OPERATION
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
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.
1
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