The MAX16800 current regulator operates from a 6.5V
to 40V input voltage range and delivers up to a total of
350mA to one or more strings of high-brightness LEDs.
The output current of the MAX16800 is adjusted by
using an external current-sense resistor in series with
the LEDs. An enable input allows wide-range "pulsed"
dimming. Wave-shaping circuitry reduces EMI. The differential
current-sense input increases noise immunity.
The MAX16800 is well suited for applications requiring
high-voltage input and is able to withstand automotive
load-dump events up to 40V. An on-board pass element
minimizes external components while providing
±3.5% output current accuracy. Additional features
include a 5V regulated output and short-circuit and
thermal protection.
The MAX16800 is available in a thermally enhanced,
5mm x 5mm, 16-pin TQFN package and is specified
over the automotive -40°C to +125°C temperature range.
Key Features
Applications/Uses
+6.5V to +40V Operating Range
Adjustable Level (35mA to 350mA)
±3.5% Output Current Accuracy
Integrated Pass Element with Low-Dropout
Voltage (0.5V typ)
Output Short-Circuit Protection
+5V Regulated Output with 4mA Source
Capability
Thermal Shutdown
Differential LED Current Sense
High-Voltage Enable Pin for Dimming Interface
Low Shutdown Supply Current (12µA typ)
Low 204mV Current-Sense Reference Reduces
Power Losses
Wave-Shaped Soft Edges Reduce Radiated EMI
During PWM Dimming
Available in Small, Thermally Enhanced,
5mm x 5mm, 16-Pin TQFN Package
-40°C to +125°C Operating Temperature Range
Automotive Exterior: Tail Lights and CHMSL
Automotive Interior: Map, Courtesy, and Cluster Lighting
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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