The MAX16823 three-channel LED driver operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of high-brightness LEDs (HB LEDs). Each channel's current is programmable using an external current-sense resistor in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to providing the on and off control of the outputs. Wave-shaping circuitry reduces EMI while providing fast turn-on and turn-off times.

The MAX16823 is well suited for automotive applications requiring a high-voltage input and is able to withstand load-dump events up to 45V. On-board pass elements minimize external components while providing ±5% LED current accuracy. Additional features include an active-high, open-drain LEDGOOD output for open LED detection, a +3.4V (±5%) regulated output with 4mA output current capability, short-circuit and thermal protections.

The MAX16823 is available in thermally enhanced 5mm x 5mm, 16-pin TQFN-EP and 16-pin TSSOP-EP packages and is specified over the -40°C to +125°C automotive temperature range.

MAX16823: Block Diagram

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Key Features

5.5V to 40V Operating Range
Adjustable Constant Output Current (5mA to 100mA and Up to 2A with External BJT)
±5% Output Current Accuracy
Open LED Detection
Three Independent High-Voltage DIM Inputs
Three Integrated Pass Elements with Low Dropout Voltage (0.7V max)
Undervoltage Lockout
Output Short-Circuit Protection
3.4V Voltage Regulator with 4mA Capability
Accurate, Low 203mV Current Sense
Overtemperature Shutdown
-40°C to +125°C Operating Temperature Range

Applications/Uses

Architecture and Industrial Lighting
Automotive Exterior: Rear Combination Lights (RCLs), CHMSL
Automotive Interior: RGB Ambient Lighting, Cluster Lighting, and LCD Backlighting
Emergency Vehicle Warning Lights
Navigation and Marine Indicators

Parametric Specs

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)

I_CC
(mA)

LED String Volt.
(V)

Package/Pins

Budgetary
Price

max

typ

min

max

See Notes

MAX16823

Linear

Series-Parallel

0.1

200

PWM

700

203

5.5

39.1

TQFN/16

TSSOP/16

$1.82 @1k

See All LED Drivers (78)

Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

MAX16823EVKIT: MAX16823 Evaluation Kit

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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