MAX16803：High-Voltage, 350mA, High-Brightness LED Driver with PWM Dimming and 5V Regulator

Smallest, High-Voltage, 350mA High-Brightness LED Driver Simplifies LED Lighting Applications, Minimizes External Part Counts, and Saves Cost and Space

The MAX16803 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 (HB LEDs). The output current of the MAX16803 is adjusted by using an external current-sense resistor in series with the LEDs. A dimming input allows widerange "pulsed" PWM operation. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16803 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 MAX16803 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. The MAX16836 is a newer and more cost effective product; except for different PWM dimming current slew rates, it provides the same performance and is pin-to-pin compatible with the MAX16803.

Key Features

+6.5V to +40V Operating Range
Adjustable LED Current (35mA to 350mA)
±3.5% LED Current Accuracy
High-Voltage DIM Pin for Dimming Interface
Integrated Pass Element with Low-Dropout Voltage (0.5V typ)
+5V Regulated Output with 4mA Source Capability
Parallel Operation for LED Current > 350mA
Differential LED Current Sense
Low Shutdown Supply Current (12µA typ)
Low 204mV Current-Sense Reference Reduces Power Losses
Wave-Shaped Edges Reduce Radiated EMI During PWM Dimming
Thermal Shutdown
Output Short-Circuit Protection
Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package
-40°C to +125°C Operating Temperature Range

MAX16803: Simplified Diagram

Applications/Uses

Automotive Exterior: Rear Combination Lights (RCL)
Automotive Interior: Map, Courtesy, and Cluster Lighting
Emergency Vehicle Warning Lights
General Lighting
Navigation and Marine Indicators
Signage, Gasoline Canopies, Beacons

DataSheet

title	Download file
MAX16803 Data Sheet	MAX16803.pdf

Parametrics

Part Number	Regulation Topology	Max. No. of LEDs	LED Channels	LED Configuration	I_LED per Channel (A)	PWM Dimming Freq. (kHz)	Dimming Ratio	Dimming Control	V_DROPOUT (mV)	V_{CURR_SENSE} (mV)	P_OUT (W)	V_IN (V)	V_IN (V)	I_CC (mA)	LED String Volt. (V)	Package/Pins	Budgetary Price
Part Number	Regulation Topology	Max. No. of LEDs	LED Channels	LED Configuration	max	max	max	Dimming Control	typ	V_{CURR_SENSE} (mV)	P_OUT (W)	min	max	max	max	Package/Pins	See Notes
MAX16803	Linear	10	1	Series	0.35	2	200	PWM	500	198	14	6.5	40	3	38.6	TQFN/16	$2.89 @1k

Design kits & evaluation modules

MAX16803EVKIT

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX16803ATE+	Active	TQFN,;16 pin;26 mm²	-40°C to +125°C	Lead Free
MAX16803ATE+T	Active	TQFN,;16 pin;26 mm²	-40°C to +125°C	Lead Free
MAX16803ATE/V+	Active	TQFN,;16 pin;26 mm²	-40°C to +125°C	Lead Free
MAX16803ATE/V+T	Active	TQFN,;16 pin;26 mm²	-40°C to +125°C	Lead Free

MAX16803.pdf MAX16803

Level Shifter Helps to Parallel LED Current Drivers MAX16803

MAX16803.pdf MAX16803