MAX5023

IN to GND ......................................................................-60V to +70V
EN to GND ..........................................................-0.3V to (V_IN + 0.3V)
HOLD to GND...................................................-0.3V to (V_OUT + 0.3V)
SET, WDI, OUT to GND ..............................................-0.3V to +13.2V
RESET to GND (Open Drain).......................................-0.3V to +13.2V
Short-Circuit Duration......................................................Continuous
Maximum Current to Any Pin (Except IN, OUT) ......................±20mA
Continuous Power Dissipation (T_A = +70°C)
8-Pin SO (derate 19.2mW/°C above +70°C).....................1538mW
Thermal Resistance:
(_JA) ....................................................................................52°C/W
(_JC) ......................................................................................2°C/W
Operating Temperature Range ............................-40°C to +125°C
Junction Temperature...........................................................+150°C
Storage Temperature Range ...............................-65°C to +150°C
Lead Temperature (soldering, 10s) .....................................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX5023/MAX5024 high-voltage linear regulators operate from a +6.5V to +65V input voltage and deliver up to 150mA of output current. These devices consume only 60µA of quiescent current with no load and withstand a -60V reverse-battery voltage at the input. The MAX5023/MAX5024 include an active-low internal microprocessor (µP) reset circuit that asserts when the regulator output drops below the preset output voltage threshold by 7.5% or 12.5%, depending on the device selected. Both devices are available with a fixed +3.3V or +5V output. These devices are shortcircuit protected and include thermal shutdown.

In addition to an enable input to turn on or off the regulator, the MAX5023/MAX5024 include a HOLD input that allows for the implementation of a self-holding circuit without requiring external components. Setting HOLD low after enabling the regulator, forces the regulator to remain on even if EN is subsequently set low. Releasing HOLD shuts down the regulator.

The MAX5023 includes a watchdog input that monitors a pulse train from the µP and generates reset pulses if the watchdog input remains high or low for a duration longer than the 1.6s watchdog timeout period. The MAX5024 includes a SET input which, when connected to ground, selects a preset output voltage of +3.3V (MAX5024S/ MAX5024T) or +5V (MAX5024L/MAX5024M). Set the adjustable output voltage by connecting SET to the regulator's output through a resistive-divider network.

The MAX5023/MAX5024 operate over the automotive temperature range (-40°C to +125°C) and are available in a thermally enhanced, surface-mount 8-pin SO package.