MAX5023
MAX5023
PRODUCTION65V, Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer
High-Voltage, Low-Quiescent-Current Linear Regulators Ideal for Automotive and Industrial Applications
- Part Models
- 6
- 1ku List Price
- Starting From $3.19
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Overview
- 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
- SET Input for Adjustable Output Voltage (MAX5024)
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.
Applications
- Automotive
- Fire/Smoke Alarms
- Home Security
- Industrial
- Telecom/Networking
Documentation
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX5023LASA+ | SOIC_N | ||
| MAX5023LASA+T | SOIC_N | ||
| MAX5023MASA+ | SOIC_N | ||
| MAX5023MASA+T | SOIC_N | ||
| MAX5023TASA+ | SOIC_N | ||
| MAX5023TASA+T | SOIC_N |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571A PIN/ERRATA |
||
| MAX5023LASA+T | PRODUCTION | |
| MAX5023MASA+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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