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Analog Devices MAX20446ATG/V+ — Analog & Data Acquisition

MAX20446ATG/V+ LED Driver Controller, 6-Ch, Boost/SEPIC

MPNMAX20446ATG/V+
End of Life

Maxim Integrated MAX20446ATG/V+, DC DC Controller, LED Driver, 6 Outputs, Boost/SEPIC Topology, 400kHz ~ 2.2MHz, 120mA per Channel, 52V Output, 4.5V to 40V Supply, -40°C to 125°C, 24-TQFN (4x4) Package.

$8.39Ref. price · indicative, final on quote
Packaging24-TQFN (4x4)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX20446ATG/V+ specifications
ParameterValue
TypeDC DC Controller
MountingSurface Mount
Voltage - output52V
Voltage4.5V
Current - output (Channel)120mA
Frequency400kHz ~ 2.2MHz
I/O channels6
Operating temperature-40°C ~ 125°C
DimmingAnalog, I²C, PWM
PackageTube
TopologyBoost, SEPIC
ApplicationsCentral Information Displays, Infotainment Displays, Instrument Clusters
Internal switchYes

Product details

What this controller does in an automotive display

The MAX20446ATG/V+ is a DC-DC controller for LED backlights in automotive central information displays, infotainment screens, and instrument clusters. It runs a boost or SEPIC topology with six outputs at 120 mA each and a 52 V output ceiling.

Dimming and control — three ways to set brightness

Dimming comes three ways: analog voltage, I²C register writes, or a direct PWM input. That covers the range from a simple pot-adjust backlight on a retrofit cluster to a CAN-bridged I²C command from the body controller. The switching frequency sweeps from 400 kHz to 2.2 MHz, so you can trade inductor size against switching loss depending on the board real estate available.

The 24-TQFN (4x4 mm) package is a surface-mount footprint that fits tight multilayer boards typical of modern head units and display modules.

Frequently asked questions

What is the dimming interface of MAX20446ATG/V+?

The MAX20446ATG/V+ supports analog dimming, I²C dimming, and PWM dimming. That gives you three control paths: a simple voltage divider, a serial bus command, or a direct duty-cycle input.

Can MAX20446ATG/V+ be used for automotive displays?

Yes. The datasheet lists central information displays, infotainment displays, and instrument clusters as target applications. The -40°C to 125°C temperature range and 40 V max supply confirm it is built for automotive electrical environments.

MAX20446ATG/V+ vs TPS61165 — what is the difference?

The TPS61165 is a single-output boost LED driver with a 40 V output and PWM dimming only. The MAX20446ATG/V+ delivers six outputs at 120 mA each, supports analog and I²C dimming in addition to PWM, and runs boost or SEPIC topology. The MAX20446 is the part to pick when you need multiple independently dimmable strings for a large automotive display; the TPS61165 fits a single-string portable or industrial backlight.

What is MAX20446ATG/V+'s listed type on this component line?

It is listed as a DC DC Controller with an LED driver function. The topology options are boost and SEPIC.