MAX16840ATB+T by Analog Devices

LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps


The MAX16840 is an LED driver IC for lighting applications. It includes all the necessary features to design low-component-count LED drivers for 12V AC and 24V AC input (e.g., MR16) light bulbs. A proprietary input-current control scheme allows LED lamps based on this device to be compatible with electronic transformers, and dimmable with standard trailing-edge dimmers (where electronic transformers are present). The IC can be used in buck, boost, and buck-boost topologies and features. It has an integrated 0.2Ω (max), 48V switching MOSFET. The IC uses constant-frequency average current-mode control. It senses the input current through the voltage at the FB pin, and regulates its average. An input pin (REFI) allows the setting of the input-current level. When the voltage at this pin is set below a certain threshold, the input current is proportional to this voltage, while when that voltage is beyond the threshold, the input current is set at a fixed, predefined level. This nonlinear behavior of REFI allows its use to achieve thermal foldback, by connecting it to an NTC resistor. The IC also features an internal overvoltage protection on the IN pin to protect the internal switching MOSFET from damage if the LED string is open or if the voltage on the LED string is too high. The IC has a separate EXT pin that can be used to guarantee that there is a kick-start of current at turn-on for low-input voltages for proper operation with electronic transformers. EXT drives an external npn transistor. Once the UVLO threshold of 5.5V is crossed on IN, EXT is pulled to ground and the external npn transistor is turned off. The IC is available in a 3mm x 3mm, 10-pin TDFN power package, and is rated over the -40°C to +125°C operating temperature range.

Where to Buy

Prices starting from US$3.25

Distributor Stock
Logo for Farnell
Farnell
from US$3.25
1,383
in stock
Buy Now
Logo for Newark Electronics
Newark Electronics
from US$3.56
1,383
in stock
Buy Now
Logo for element14
element14
from US$3.69
1,383
in stock
Buy Now
Logo for Analog Devices
Analog Devices
from US$3.42
500
in stock
Buy Now

Features

Cost-Effective Solution for MR16 and Other SSL Applications Proprietary Input Current-Control Scheme to Achieve Electronic Transformer Compatibility and Dimmability Buck, Boost, SEPIC, and Buck-Boost Topologies Analog Dimming
Proprietary Input Current-Control Scheme to Achieve Electronic Transformer Compatibility and Dimmability
Buck, Boost, SEPIC, and Buck-Boost Topologies
Analog Dimming
Minimal Component Count Saves Cost and Space Integrated 0.2Ω (max) 48V Switching MOSFET
Integrated 0.2Ω (max) 48V Switching MOSFET
Protection Features and Wide Operating Temperature Range Improves Reliability Thermal-Foldback Protection Output Overvoltage Protection Internal Overtemperature Protection Available in a 10-Pin Thermally Enhanced TDFN Package Operation Over -40°C to +125°C Temperature Range
Thermal-Foldback Protection
Output Overvoltage Protection
Internal Overtemperature Protection
Available in a 10-Pin Thermally Enhanced TDFN Package
Operation Over -40°C to +125°C Temperature Range

Specifications

VIN (V) (min) 6.5
VIN (V) (max) 48
Max. No. of LEDs 11
# LED Channels 1
Regulation Topology Inductor Based
LED Configuration Series
ILED per Channel (A) (max) 1
Dimming Control Analog
VCURR_SENSE (mV) 200
POUT (W) 12
ICC (mA) (max) 2
LED String Volt. (V) (max) 48
Switching Frequency (kHz) 300
Package/Pins TDFN/10
BudgetaryPrice (See Notes) 2.56


MAX16840ATB+T Semiconductors - ICs by Analog Devices

LED DRIVER BUCK 300KHZ TDFN-10

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

Specifications

Device Topology Buck Boost Buck-Boost
Input Voltage Min 12V
Input Voltage Max 24V
Output Voltage Max -
Output Current Max -
Switching Frequency 300kHz
No. of Outputs 1Outputs
IC Mounting SMD
Driver Case Style TDFN
No. of Pins 10Pins
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)

Alternative Descriptions

Led Driver, 300Khz, Tdfn-Ep-10, 125Deg C | Newark Electronics
LED DRIVER, 300KHZ, TDFN-EP-10, 125DEG C | element14
LED Driver with Integrated MOS | Analog Devices

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX16840ATB+T ?

Additional datasheets, footprints and schematics for MAX16840ATB+T are listed on our Part Details page. You can also find images and similar parts to MAX16840ATB+T on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for MAX16840ATB+T on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MAX16840ATB+T price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the MAX16840ATB+T you can contact the distributor directly for product support, shipping queries etc.

Is the MAX16840ATB+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX16840ATB+T have stock available?

Authorised distributors including Newark Electronics, element14, Farnell and Analog Devices have stock available or on a lead time for MAX16840ATB+T .

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for MAX16840ATB+T often in real-time on the comparison pages.

What if I can't find stock of MAX16840ATB+T ?

You can fill out our help required form which you can use to request a quote for MAX16840ATB+T from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay