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Analog Devices Inc./Maxim Integrated MAX5024SASA+T
- Part No.:
- MAX5024SASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX5024SASA+T.pdf
- Description:
- IC REG LIN POS ADJ 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX5024SASA+T from Maxim Integrated is a high-voltage linear regulator with integrated microprocessor reset supervisor and adjustable output voltage capability. It operates from +6.5V to +65V input, delivers up to 150mA output current, features 60μA no-load quiescent current, -60V reverse-battery protection, and a thermally enhanced 8-pin SO-EP package. It is used in automotive body control modules requiring robust power sequencing and fault monitoring.
For engineers reviewing the MAX5024SASA+T datasheet, MAX5024SASA+T pinout, MAX5024SASA+T application, or MAX5024SASA+T equivalent, key selection criteria include its fixed +3.3V output (SET = GND), ±1.5% output voltage accuracy over temperature, 2.805V–2.970V reset threshold range, and self-holding enable logic via HOLD input - all validated for -40°C to +125°C operation.
Technical Context
The MAX5024SASA+T implements a BiCMOS-based linear regulator with internal bandgap reference and thermal shutdown at +150°C (20°C hysteresis). Its SET input enables dual-mode operation: grounded for fixed +3.3V output or connected to an external resistor divider for adjustable output (2.5V–11V) using VSET = 1.248V reference.
Its integrated μP reset circuit monitors VOUT and asserts open-drain RESET low when output drops below 2.805V–2.970V (−7.5% or −12.5% of nominal), with 140–260ms timeout. The HOLD input provides latch-on functionality without external components, while EN enables standard active-high control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +6.5V to +65V - supports wide automotive battery transients including load dump |
| Output Voltage | +3.3V (fixed, SET = GND) - ±1.5% tolerance over -40°C to +125°C ensures reliable MCU core supply |
| Max Output Current | 150mA - guaranteed continuous delivery under thermal limits with exposed pad soldered to PCB copper |
| Quiescent Current | 58μA typical (no load) - enables always-on systems with ultra-low standby power consumption |
| Reset Threshold | 2.805V to 2.970V - corresponds to −7.5% of +3.3V output, enabling precise brownout detection |
| Dropout Voltage | 0.9V typical at 150mA - allows regulation down to VIN = VOUT + 0.9V, critical for low-headroom applications |
| Thermal Shutdown | +150°C junction temperature with 20°C hysteresis - prevents permanent damage during sustained overload |
Pinout & Package
MAX5024SASA+T uses an 8-pin surface-mount SO-EP (Small Outline-Exposed Pad) package with thermally enhanced copper-exposed pad (EP) soldered to PCB ground plane for 1.538W dissipation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts +6.5V to +65V; requires 10μF bypass capacitor to GND for stability |
| 2 EN | Enable Input (active high) | Pull ≥2.4V to enable regulator; internally pulled down with 5MΩ resistor |
| 3 GND | Ground / Thermal Heatsink | Primary return path and thermal conduction path to PCB ground plane |
| 4 RESET | Active-Low Open-Drain Reset Output | Asserts low when VOUT < reset threshold; requires external pullup for logic interface |
| 5 HOLD | Hold Input (active low) | Forces latched-on state after EN activation; internally pulled up to OUT with 4μA current source |
| 6 N.C. | No Connection | Not internally bonded; must remain unconnected on PCB |
| 7 SET | Feedback Reference Input | Grounded for +3.3V fixed output; connected to resistor divider for adjustable mode (2.5V–11V) |
| 8 OUT | Regulator Output | Delivers regulated +3.3V; requires ≥15μF output capacitor with ESR < 0.5Ω |
| EP | Exposed Pad | Internally connected to GND; must be soldered to large PCB copper area for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Mode Output Configuration | Fixed +3.3V (SET = GND) or adjustable 2.5V–11V (SET = resistive divider), enabling one footprint across multiple voltage rails |
| Self-Holding Circuit Logic | HOLD input latches regulator ON after EN activation, eliminating need for external latch or microcontroller GPIO retention |
| Reverse-Battery Protection | Withstands −60V at IN pin without damage or excessive reverse current (<10μA), essential for automotive jump-start scenarios |
| Integrated μP Reset Supervisor | Monitors VOUT directly using same bandgap reference; asserts RESET within 5μs of undervoltage event |
| Thermally Enhanced SO-EP Package | θJA = 41°C/W with 1in² copper; enables 150mA output at +95°C ambient without heatsink |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powering microcontrollers and CAN transceivers in door modules, seat controllers, and lighting ECUs where ignition-switched 12V battery input experiences load dump and cold-crank transients. IC Role / Device Role / Timing Role: Primary 3.3V system rail regulator with integrated reset supervision and latch-on hold logic for seamless power-up sequencing. Use Value: Eliminates need for external reset IC and hold circuitry, reducing BOM count by 2–3 components while maintaining ASIL-B compatible fault detection. |
Use Scenario: Providing isolated 3.3V logic supply for digital I/O expansion cards in programmable logic controllers operating in harsh factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: High-reliability linear regulator with reverse-voltage and thermal fault protection, ensuring uninterrupted operation during field wiring errors or cooling failures. Use Value: −60V reverse-battery rating and +125°C operation allow direct connection to unfiltered 24V DC bus without additional protection diodes or derating. |
| Fire Alarm Control Panel | Telecom Remote Radio Unit |
Use Scenario: Generating stable 3.3V supply for smoke detector microcontrollers and analog sensor front-ends in life-safety systems requiring >10-year field reliability and UL/EN54 compliance. IC Role / Device Role / Timing Role: Primary regulated supply with brownout reset assertion at 2.805V to prevent firmware corruption during AC power failure and battery backup switchover. Use Value: Guaranteed 140–260ms reset timeout and ±1.5% output accuracy ensure deterministic reset behavior across full temperature range without calibration. |
Use Scenario: Powering FPGA configuration circuitry and low-noise ADCs in outdoor 4G/5G remote radio heads exposed to solar heating and lightning-induced surges on 48V DC power feeds. IC Role / Device Role / Timing Role: High-input-voltage linear regulator with 65V absolute max rating and 1.5W thermal dissipation capability for compact, fanless enclosure designs. Use Value: SO-EP package with θJC = 2°C/W enables direct thermal coupling to metal chassis, achieving 150mA output at +85°C ambient without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX5024MASA+T | Fixed +5V output (vs. +3.3V); identical pinout, thermal specs, and feature set | Suitable where system requires 5V logic rail instead of 3.3V; no change to PCB layout or support circuitry | Select MAX5024MASA+T only if target application mandates +5V output; otherwise MAX5024SASA+T provides optimal match for 3.3V MCU supplies. |
| TPS7B8733QKVURQ1 | Automotive-grade 3.3V LDO (40V max input, 150mA), no HOLD/SET inputs, no integrated reset | Lacks self-holding logic and reset supervision; requires external reset IC and latch circuit for equivalent functionality | Choose TPS7B8733QKVURQ1 only if reset and hold functions are implemented elsewhere; MAX5024SASA+T integrates both, reducing design complexity and component count. |
Compared with MAX5024MASA+T, MAX5024SASA+T delivers matched thermal performance and pin compatibility but targets 3.3V systems; versus TPS7B8733QKVURQ1, it adds integrated reset and HOLD functionality-eliminating two external components and simplifying power sequencing in space-constrained automotive and industrial modules.
Availability
MAX5024SASA+T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, fire alarm control panels, and telecom remote radio units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX5024SASA+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX5024 series was developed specifically for high-reliability automotive and industrial power systems requiring wide-input-voltage regulation, integrated supervisory functions, and robust fault protection in thermally constrained packages.
FAQ
What output voltage does MAX5024SASA+T deliver?
MAX5024SASA+T delivers a fixed +3.3V output when the SET pin is connected to ground. Its output voltage is guaranteed between 3.168V and 3.432V (±1.5%) across load (1mA–150mA) and temperature (-40°C to +125°C), as specified in the Electrical Characteristics table. The device does not support adjustable output in this variant - that capability requires MAX5024 variants with different suffixes (e.g., MAX5024SASA+T is specifically the +3.3V version).
How does the HOLD function work on MAX5024SASA+T?
The HOLD input on MAX5024SASA+T is an active-low signal that enables self-holding behavior: after EN is pulled high to turn on the regulator, pulling HOLD low latches the output ON even if EN subsequently goes low. To shut down, release HOLD (let it float or connect to OUT) while EN remains low. Internally, HOLD is pulled up to OUT with a 4μA current source, so no external pullup is needed - a key design simplification confirmed in the Pin Description and Truth Table.
What is the reset threshold voltage for MAX5024SASA+T?
The reset threshold for MAX5024SASA+T is 2.805V to 2.970V, corresponding to −7.5% of its nominal +3.3V output. This range is explicitly listed in the Electrical Characteristics table under "Reset Threshold (VTH)" for "MAX502_S, SET = GND". RESET asserts low when VOUT falls below this threshold and remains low for 140–260ms (reset timeout period tRP) after VOUT recovers - a fully integrated function requiring no external components.
Does MAX5024SASA+T include watchdog timer functionality?
No, MAX5024SASA+T does not include a watchdog timer. The watchdog timer (WDI input and 1.6s timeout) is exclusive to the MAX5023 family (e.g., MAX5023SASA+T). MAX5024SASA+T replaces WDI with the SET input for output voltage configuration. This functional distinction is clearly defined in the General Description, Pin Configurations, and Selector Guide - confirming MAX5024SASA+T is optimized for adjustable/fixed voltage regulation with reset supervision, not watchdog monitoring.
What package type and thermal performance does MAX5024SASA+T use?
MAX5024SASA+T uses an 8-pin SO-EP (Small Outline-Exposed Pad) package with the exposed pad (EP) internally connected to GND. Its thermal characteristics are θJA = 41°C/W and θJC = 2°C/W (JEDEC JESD51-7, four-layer board), enabling 1.538W power dissipation at +70°C ambient. Derating is 19.2mW/°C above +70°C, supporting 150mA output at +95°C ambient when the EP is soldered to ≥1in² PCB copper - data verified in Package Thermal Characteristics and Figure 5.
MAX5024SASA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 65V
- Voltage - Output (Min/Fixed):
- 2.5V (3.3V)
- Voltage - Output (Max):
- 11V
- Voltage Dropout (Max):
- 1.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 140 µA
- Current - Supply (Max):
- -
- PSRR:
- 54dB (100Hz)
- Control Features:
- Enable, Hold, Reset
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX5024SASA+T FAQ
1.How can I place an order for MAX5024SASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5024SASA+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX5024SASA+T reliable?
The price and inventory of MAX5024SASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5024SASA+T is usually 5 days.
3.What payment methods are accepted for MAX5024SASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5024SASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5024SASA+T?
MAX5024SASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5024SASA+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX5024SASA+T?
For technical support, including MAX5024SASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5024SASA+T requirements.
6.How does Aetrix verify that MAX5024SASA+T is sourced from the original manufacturer or authorized distributors?
All MAX5024SASA+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX5024SASA+T meets industry standards.
7.What is the process for return or replacement of MAX5024SASA+T?
All MAX5024SASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5024SASA+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX5024SASA+T part is unused and in its original packaging.
Return procedure for MAX5024SASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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