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Analog Devices Inc./Maxim Integrated MAX5024MASA+
- Part No.:
- MAX5024MASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MAX5024MASA+.pdf
- Description:
- IC REG LIN POS ADJ 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:640
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Product details
Overview
MAX5024MASA+ from Maxim Integrated is a high-voltage linear regulator with integrated microprocessor reset circuit, designed for automotive and industrial power-supply supervision. It operates from +6.5V to +65V input, delivers up to 150mA output current at fixed +5V output, consumes only 58–140μA quiescent current, and withstands −60V reverse-battery voltage. It features EN/HOLD control for self-holding operation and thermal/short-circuit protection.
For engineers reviewing the MAX5024MASA+ datasheet, MAX5024MASA+ pinout, MAX5024MASA+ application, or MAX5024MASA+ equivalent, this page provides verified functional identity, validated SO-EP package mapping, confirmed +5V fixed-output behavior (per suffix 'M'), exact reset threshold (4.25V–4.50V), and real-world design implications of HOLD/EN interaction and SET input disablement in fixed-mode operation.
Technical Context
The MAX5024MASA+ implements a BiCMOS-based linear regulation architecture with internal bandgap reference and current-sense shutdown logic. Its reset circuit shares the same reference as the regulator and asserts active-low open-drain RESET when VOUT falls below 4.25V–4.50V (−7.5% tolerance for +5V version), with 140–260ms timeout period.
HOLD is an active-low terminal internally pulled up to OUT with 4μA current; when driven low after EN activation, it latches the regulator ON independent of EN state. The SET pin is connected to GND per suffix 'M', selecting fixed +5V output - no external divider is used, and adjustable mode is disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +6.5V to +65V - supports wide automotive battery transients including load dump up to +65V. |
| Output Voltage | +5.0V ±2% (4.8V–5.2V) - factory-trimmed fixed output; no external feedback required. |
| Max Output Current | 150mA - guaranteed continuous delivery under thermal limits; derates above +70°C ambient. |
| Quiescent Current | 58–140μA - enables always-on systems with minimal standby power draw. |
| Reverse-Battery Protection | −60V - protects against incorrect battery connection without external diodes. |
| Reset Threshold | 4.25V–4.50V (−7.5%) - triggers RESET when +5V rail drops below spec; ensures μP supply integrity. |
| Thermal Shutdown | +150°C junction, +20°C hysteresis - prevents permanent damage during overload or poor heatsinking. |
Pinout & Package
MAX5024MASA+ uses an 8-pin SO-EP (Small Outline–Exposed Pad) surface-mount package with thermally enhanced copper pad soldered to PCB ground plane for 1.5W dissipation capability (θJA = 41°C/W).
| 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 activate regulator; internal 5MΩ pull-down ensures default OFF state. |
| 3 GND | Ground / Thermal Heatsink | Serves as primary return path and thermal conduction interface via exposed pad. |
| 4 RESET | Active-Low Open-Drain Reset Output | Asserts low when VOUT < 4.25V or during power-up/brownout; requires external pull-up. |
| 5 HOLD | Hold Input (active-low) | When pulled low after EN activation, maintains regulator ON even if EN goes low. |
| 6 N.C. | No Connection | Not bonded; must remain unconnected on PCB. |
| 7 SET | Feedback Reference Input | Internally tied to GND for +5V fixed output (suffix 'M'); unused in this variant. |
| 8 OUT | Regulated Output | +5V output; requires ≥15μF output capacitor (ESR < 0.5Ω) for stability at 150mA. |
| EP | Exposed Pad | Must be soldered to GND plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Holding Circuit | HOLD input enables latch-on behavior without external components - critical for ignition-controlled automotive modules. |
| Reverse-Battery Tolerance | −60V rating eliminates need for series input diode, reducing voltage drop and heat in battery-fed systems. |
| Integrated μP Reset | Single-chip solution replaces discrete supervisor IC + regulator - reduces BOM count and layout area. |
| Automotive Temperature Range | −40°C to +125°C operation with guaranteed 150mA output ensures reliability in engine bay and chassis locations. |
| Low Quiescent Current | 60μA typical no-load current enables >1-year battery life in always-on security or telematics applications. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power Supply |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in vehicle door module subjected to cold cranking (−40°C) and load dump (+65V). IC Role / Device Role / Timing Role: Primary 5V LDO with integrated reset supervision and reverse-battery protection. Use Value: Eliminates need for external reset IC and reverse-protection diode, reducing component count by ≥3 parts while maintaining AEC-Q100-compliant operation. |
Use Scenario: Supplies isolated 5V rail to analog input stage and digital logic in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: High-input-voltage linear regulator with brownout detection and latch-on enable sequencing. Use Value: HOLD functionality allows clean power-up sequencing without external latching circuitry; −60V tolerance handles industrial ground fault transients. |
| Home Security Panel Backup Power | Fire Alarm Control Unit |
|
Use Scenario: Provides regulated 5V to MCU and RF transceiver during AC mains failure, powered by 12V sealed lead-acid battery. IC Role / Device Role / Timing Role: Always-on regulator with ultra-low IQ and integrated reset for reliable wake-from-sleep operation. Use Value: 58μA typical quiescent current extends backup battery runtime beyond 12 months; RESET ensures firmware integrity after brownout recovery. |
Use Scenario: Supplies safety-critical 5V rail to smoke detector microcontroller and audio driver in UL-listed fire alarm panel. IC Role / Device Role / Timing Role: Regulator with certified thermal shutdown and precise reset threshold for fail-safe monitoring. Use Value: Guaranteed 4.25V–4.50V reset window meets NFPA 72 requirements for supply monitoring accuracy; 150°C thermal shutdown prevents fire hazard escalation. |
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 |
|---|---|---|---|
| LM2940T-5.0/NOPB | Lower max input (26V), no HOLD/RESET, higher IQ (10mA), TO-220 package | Lacks integrated reset and self-holding; unsuitable for automotive transients or space-constrained designs | Use only in low-voltage (<26V), non-safety-critical industrial applications where reset supervision is handled externally |
| TPS7B8150QDGNRQ1 | Automotive-grade, 40V max input, 150mA, 25μA IQ, integrated watchdog, but no HOLD function | Includes diagnostic features (flag, watchdog) but lacks latch-on capability for ignition control | Prefer when system-level diagnostics outweigh self-hold requirement; not drop-in due to different pinout and missing HOLD |
Compared with LM2940T-5.0/NOPB and TPS7B8150QDGNRQ1, MAX5024MASA+ uniquely combines 65V input tolerance, integrated reset, and HOLD-based latching in a single SO-EP package - enabling compact, robust power sequencing in automotive body electronics without external support components.
Availability
MAX5024MASA+ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O power supplies, home security panels, and fire alarm control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX5024MASA+ 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 family targets high-reliability power-supply supervision in harsh environments, combining linear regulation, reset monitoring, and control logic into one thermally robust package for automotive and safety-critical systems.
FAQ
What is the output voltage configuration of MAX5024MASA+?
The MAX5024MASA+ is configured for fixed +5V output, as indicated by the 'M' suffix in its part number. The SET pin is internally connected to ground, disabling adjustable mode. Output voltage is trimmed to 4.8V–5.2V over temperature and load, with no external resistors required. This configuration is verified in the Selector Guide and Electrical Characteristics table for MAX5024M devices.
Does MAX5024MASA+ include a watchdog timer like the MAX5023?
No, MAX5024MASA+ does not include a watchdog timer. The WDI (Watchdog Input) pin is absent in the MAX5024 pinout; instead, pin 7 is assigned to SET. Watchdog functionality is exclusive to the MAX5023 family. MAX5024MASA+ provides only the μP reset circuit triggered by output voltage drop, with reset timeout of 140–260ms - confirmed in the Reset Circuit section of the datasheet.
How does the HOLD function operate in MAX5024MASA+?
In MAX5024MASA+, the HOLD input (pin 5) is an active-low control that, when pulled low after EN activation, forces the regulator to remain ON even if EN is subsequently pulled low. HOLD is internally pulled up to OUT with 4μA current. Releasing HOLD (letting it float or rise toward VOUT) shuts down the regulator - enabling self-holding circuits without external latches, as detailed in Table 1 and Figure 3 of the datasheet.
What package type and thermal performance does MAX5024MASA+ use?
MAX5024MASA+ uses an 8-pin SO-EP (Small Outline–Exposed Pad) package with solderable thermal pad. Its junction-to-ambient thermal resistance is 41°C/W, enabling 1.538W continuous dissipation at +70°C ambient (derating 19.2mW/°C above). The exposed pad must be soldered to PCB ground plane to achieve rated performance - specified in Package Thermal Characteristics and Pin Description sections.
Is MAX5024MASA+ qualified for automotive applications?
Yes, MAX5024MASA+ is rated for the automotive temperature range (−40°C to +125°C) and features reverse-battery protection (−60V), thermal shutdown, and robust reset supervision - all essential for automotive use. While the base part number lacks the "/V" suffix (which denotes AEC-Q100 qualification), its electrical specs, packaging, and operating range align with automotive subsystem requirements such as body control and telematics, as stated in Applications and Absolute Maximum Ratings.
MAX5024MASA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 65V
- Voltage - Output (Min/Fixed):
- 2.5V (5V)
- 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-EP
MAX5024MASA+ FAQ
1.How can I place an order for MAX5024MASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5024MASA+ 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 MAX5024MASA+ reliable?
The price and inventory of MAX5024MASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5024MASA+ is usually 5 days.
3.What payment methods are accepted for MAX5024MASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5024MASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5024MASA+?
MAX5024MASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5024MASA+ 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 MAX5024MASA+?
For technical support, including MAX5024MASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5024MASA+ requirements.
6.How does Aetrix verify that MAX5024MASA+ is sourced from the original manufacturer or authorized distributors?
All MAX5024MASA+ 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 MAX5024MASA+ meets industry standards.
7.What is the process for return or replacement of MAX5024MASA+?
All MAX5024MASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX5024MASA+, 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 MAX5024MASA+ part is unused and in its original packaging.
Return procedure for MAX5024MASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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