MAX16820ATT+T by Analog Devices

2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming


The MAX16819/MAX16820, step-down constant-current high-brightness LED (HB LED) drivers provide a cost-effective solution for architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications. The MAX16819/MAX16820 operate 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 MAX16819/MAX16820 are 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. A hysteretic control algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming. The MAX16819 features a 30% inductor current ripple and the MAX16820 features a 10% current ripple. These devices operate up to 2MHz switching frequency, thus allowing for small component size. The MAX16819/MAX16820 operate over the -40°C to +125°C automotive temperature range and are available in 3mm x 3mm x 0.8mm, 6-pin TDFN packages.

Where to Buy

Prices starting from US$1.30

Distributor Stock
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RS
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Analog Devices
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Newark Electronics
from US$1.39
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element14
from US$1.49
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Farnell
from US$1.30
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Features

Simple High-Power LED Lighting Design with Accurate LED Current Control Over 25W Output Power High-Side Current Sense Adjustable Constant LED Current ±5% LED Current Accuracy 4.5V to 28V Input Voltage Range
Over 25W Output Power
High-Side Current Sense
Adjustable Constant LED Current
±5% LED Current Accuracy
4.5V to 28V Input Voltage Range
Wide Dimming Range (5000:1) Dedicated Dimming-Control Input 20kHz Maximum Dimming Frequency
Dedicated Dimming-Control Input
20kHz Maximum Dimming Frequency
Minimizes Number of Components to Save Space and Cost Hysteretic Control: No Compensation Up to 2MHz Switching Frequency 5V, 10mA On-Board Regulator
Hysteretic Control: No Compensation
Up to 2MHz Switching Frequency
5V, 10mA On-Board Regulator

Specifications

VIN (V) (min) 4.5
VIN (V) (max) 28
Max. No. of LEDs 6
# LED Channels 1
Regulation Topology Inductor Based
LED Configuration Series
ILED per Channel (A) (max) 3
PWM Dimming Freq. (kHz) (max) 20
Dimming Ratio (max) 5000
Dimming Control PWM
VDROPOUT (mV) (typ) 500
VCURR_SENSE (mV) 190
POUT (W) 25
ICC (mA) (max) 1.5
LED String Volt. (V) (max) 26
Switching Frequency (kHz) 2000
Package/Pins TDFN/6
BudgetaryPrice (See Notes) 1.01


MAX16820ATT+T Semiconductors - ICs by Analog Devices

LED DRIVER BUCK 2MHZ TDFN-6

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Topology Buck (Step Down)
Input Voltage Min 4.5V
Input Voltage Max 28V
Output Voltage Max 26V
Output Current Max 3A
Switching Frequency 2MHz
No. of Outputs 1Outputs
IC Mounting SMD
Driver Case Style TDFN
No. of Pins 6Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Output Current 1A
Output Voltage 26V

Alternative Descriptions

2MHz High-Brightness LED Drive | Analog Devices
Led Driver, Buck, 2Mhz, Tdfn-6 | Newark Electronics
LED DRIVER, BUCK, 2MHZ, TDFN-6 | element14
2MHz LED Drivers 5000:1 Dimming | RS

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX16820ATT+T ?

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Is the MAX16820ATT+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX16820ATT+T have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14, Farnell and RS have stock available or on a lead time for MAX16820ATT+T .

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