Product Summary

The MAX16820ATT is a step-down constant-current high-brightness LED (HB LED) driver. The MAX16820ATT provides a costeffective solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications. The MAX16820ATT operates from a 4.5V to 28V input voltage range and feature a 5V/10mA on-board regulator. A high-side current-sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming. The MAX16820ATT is well suited for applications requiring a wide input voltage range. The high-side current-sensing and an integrated current-setting circuitry minimize the number of external components while delivering an LED current with ±5% accuracy.

Parametrics

MAX16820ATT absolute maximum ratings: (1)IN, CSN, DIM to GND: -0.3V to +30V; (2)VCC, DRV to GND: -0.3V to +6V; (3)CSN to IN: -0.3V to +0.3V; (4)Maximum Current into Any Pin; (5)(except IN, VCC, and DRV): ±20mA; (6)Continuous Power Dissipation (TA = +70℃); (7)6-Pin TDFN (derate 18.17mW/oC* above +70℃): 1454mW; (8)Operating Temperature Range: -40℃ to +125℃; (9)Junction Temperature: +150℃; (10)Storage Temperature Range: -65℃ to +150℃; (11)Lead Temperature (soldering, 10s): +300℃; (12)Pin-to-Pin ESD Ratings (HB Model): 2.5kV.

Features

MAX16820ATT features: (1)High-Side Current Sense; (2)Dedicated Dimming Control Input; (3)20kHz Maximum Dimming Efficiency; (4)Hysteretic Control: No Compensation; (5)Up to 2MHz Switching Frequency; (6)±5% LED Current Accuracy; (7)Adjustable Constant LED Current; (8)4.5V to 28V Input Voltage Range; (9)Over 25W Output Power; (10)5V, 10mA On-Board Regulator; (11)-40℃ to +125℃ Operating Temperature Range.

Diagrams

MAX16820ATT pin connection

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