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 short-circuit protected
and include thermal shutdown.
In addition to an enable input to turn on or off the regulator,
the MAX5023/MAX5024 include an active-low HOLD input
that allows for the implementation of a self-holding
circuit without requiring external components. Setting
active-low HOLD low after enabling the regulator, forces the regulator
to remain on even if EN is subsequently set low.
Releasing active-low 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-EP
package.
Key Features
Applications/Uses
Wide Operating Input Voltage Range
+6.5V to +65V
Thermally Enhanced 8-Pin SO Package with
Exposed Pad Dissipates 1.5W
Guaranteed 150mA Output Current
60µA No-Load Supply Current
-60V Reverse-Battery Protection
Preset +3.3V or +5.0V Output Voltage
Thermal and Short-Circuit Protection
Operate Over -40°C to +125°C Temperature Range
Integrated µP Reset Circuit
Watchdog Timer with 1.6s Timeout Period
(MAX5023)
Regulator Enable and Hold Inputs Implement
Self-Holding Circuit
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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