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Analog Devices MAX6957ATL+T — DC-DC Power Modules
Analog Devices

MAX6957ATL+T LED Driver, 4-Wire Serial, 40-TQFN, Active

MPNMAX6957ATL+T
End of Life

Analog Devices MAX6957ATL+T, LED display driver, 4-wire serial interface, 7/16/20 segment configuration, 180 µA supply, 2.5V–5.5V, –40°C to 125°C, 40-TQFN (6x6) exposed pad, surface mount, active.

$13.24Ref. price · indicative, final on quote
MAX6957ATL+T datasheet
Packaging40-WFQFN Exposed Pad
StockContact for availability
MOQ1 pcs
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Specifications

MAX6957ATL+T Technical Specifications
ParameterValue
Display typeLED
Mounting typeSurface Mount
Voltage2.5V ~ 5.5V
Current - supply180 µA
Interface4-Wire Serial
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Configuration7, 16, 20 Segment
Case40-WFQFN Exposed Pad

Product details

LED driver that handles the segment count without external shift registers

The MAX6957ATL+T from Analog Devices (Maxim Integrated) is a compact LED display driver that handles 7, 16, or 20 segment configurations through a 4-wire serial interface. It integrates the constant-current sinks and multiplexing logic, so you don't need external shift registers or discrete current-setting resistors for each segment. The 180 µA typical supply current keeps the power budget low even when driving multiple digits, and the 2.5V to 5.5V supply range lets it run from a single lithium cell or a 3.3V/5V rail.

Why the –40°C to 125°C range matters for your BOM

Rated for operation from –40°C to 125°C, this driver fits industrial control panels, outdoor signage, and under-hood automotive displays where the ambient temperature swings wide. The 40-TQFN (6x6) package with exposed pad helps pull heat away from the die when driving high segment currents at elevated temperatures — make sure your PCB layout includes thermal vias under the pad to keep junction temperature within limits.

Sourcing and lifecycle — still in active production

The MAX6957ATL+T carries an active lifecycle status and is ROHS3 compliant.

Frequently asked questions

Does the MAX6957ATL+T require external components like resistors?

The MAX6957ATL+T integrates constant-current sinks, so it does not need external current-setting resistors for each segment. A single external resistor sets the global current level for all segments. The 4-wire serial interface connects directly to a microcontroller's SPI or GPIO lines.

What is the output current of the MAX6957?

The MAX6957ATL+T's segment output current is programmable via an external resistor. The datasheet provides the resistor value versus current curve; typical designs set it between 2 mA and 40 mA per segment depending on LED brightness and power budget.