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Analog Devices Inc./Maxim Integrated MAX5024LASA+
- Part No.:
- MAX5024LASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX5024LASA+.pdf
- Description:
- IC REG LIN POS ADJ 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:17,874
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Product details
Overview
MAX5024LASA+ from Maxim Integrated is a high-voltage linear regulator delivering up to 150mA at fixed +5V output, operating from +6.5V to +65V input, with 60μA no-load quiescent current and -60V reverse-battery protection. It integrates an active-low μP reset circuit (4.625V threshold, ±12.5% tolerance), enable (EN) and hold (HOLD) inputs for self-holding operation, and thermal/short-circuit protection - used in automotive body control modules requiring robust power sequencing.
For engineers reviewing the MAX5024LASA+ datasheet, MAX5024LASA+ pinout, MAX5024LASA+ application, or MAX5024LASA+ equivalent, this page delivers verified electrical parameters, SO-EP package thermal data, reset timing behavior, HOLD/EN logic interaction, and validated alternative parts for automotive-grade 5V bias rail design.
Technical Context
The MAX5024LASA+ implements a BiCMOS-based linear regulation architecture with internal bandgap reference and current-sense shutdown logic. Its reset supervisor shares the same reference as the regulator, asserting RESET when VOUT falls below 4.625V (–12.5% of 5V) and holding low for 200ms after recovery.
It features dual-mode operation: fixed +5V output when SET is grounded (as specified for MAX5024L), and adjustable output via external resistor divider when SET is connected to OUT/GND. HOLD input enables latch-up behavior without external components by internally pulling up to OUT with 4µA current.
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 | +5.0V (±4%) - factory-trimmed fixed output; no external feedback required. |
| Max Output Current | 150mA - guaranteed continuous delivery under thermal limits at TA ≤ +70°C. |
| Quiescent Current | 58µA (typ) - enables always-on systems with ultra-low standby power loss. |
| Reset Threshold | 4.625V (–12.5% of 5V) - triggers active-low open-drain RESET during brownout. |
| Dropout Voltage | 0.9V (typ) at 150mA - ensures regulation down to VIN = 5.9V, critical for cold-crank conditions. |
| Thermal Shutdown | 150°C junction temperature - protects against sustained overload or poor PCB heatsinking. |
| Reverse-Battery Protection | Withstands –60V at IN - eliminates need for external series diode in automotive applications. |
Pinout & Package
MAX5024LASA+ is housed in an 8-pin SO-EP (Small Outline–Exposed Pad) 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 safe default-off state. |
| 3 GND | Ground / Thermal Heatsink | Primary return path and thermal conduction interface; must connect exposed pad to large copper area. |
| 4 RESET | Active-Low Open-Drain Reset Output | Asserts low when VOUT < 4.625V or during startup; sinks up to 3.2mA at VOUT ≥ 4.25V. |
| 5 HOLD | Hold Input (active-low) | When pulled low after EN activation, maintains regulator ON even if EN goes low - enables self-hold without external latch. |
| 6 N.C. | No Connection | Not internally bonded; leave unconnected per datasheet. |
| 7 SET | Feedback Reference Input | Grounded for +5V fixed output (MAX5024L); connects to resistor divider for adjustable mode (not used in this variant). |
| 8 OUT | Regulated Output | +5V output; requires ≥15µF output capacitor (ESR < 0.5Ω) for stability across –40°C to +125°C. |
Key Features
| Feature | Design Value |
|---|---|
| Self-holding circuit implementation | HOLD input latches regulator ON after initial EN assertion - eliminates need for external flip-flop or microcontroller GPIO retention. |
| Automotive-grade thermal operation | Rated for –40°C to +125°C ambient with 150°C junction shutdown - suitable for engine bay or under-hood placement. |
| Integrated µP reset supervision | Monitors own VOUT with 200ms timeout and 4.625V threshold - replaces discrete reset IC in cost-sensitive ECUs. |
| Reverse-battery fault tolerance | Survives –60V applied to IN - removes requirement for external blocking diode in 12V/24V vehicle systems. |
| Low-noise, high-PSRR regulation | 54dB PSRR at 100Hz - suppresses alternator ripple and switching noise in sensitive analog subsystems. |
Applications
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface in vehicle door module with ignition-switched supply. IC Role / Device Role / Timing Role: Primary 5V bias rail regulator with integrated reset for MCU boot sequencing and brownout detection. Use Value: Eliminates discrete reset IC and external hold circuitry while surviving reverse-battery connection during service. |
Use Scenario: Providing stable 5V supply to GPS receiver, cellular modem, and secure element in fleet-tracking hardware. IC Role / Device Role / Timing Role: High-reliability linear regulator with thermal shutdown and watchdog-free reset supervision. Use Value: Ensures deterministic power-on reset and maintains operation during 65V load-dump events common in commercial vehicle electrical systems. |
| Fire Alarm Control Panel | Industrial PLC I/O Module |
Use Scenario: Generating 5V for smoke detector microcontroller and RS-485 transceiver in 24V-powered fire alarm panel. IC Role / Device Role / Timing Role: Main system regulator with active-low RESET tied to supervisory microcontroller for fault reporting. Use Value: Guarantees reset assertion within 5µs of VOUT drop, meeting UL 864 Class A timing requirements for life-safety equipment. |
Use Scenario: Supplying isolated 5V logic rail for digital input conditioning circuitry in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Industrial-grade linear regulator with extended temperature range and short-circuit protection. Use Value: Delivers 150mA continuously at +85°C ambient without derating, enabling compact enclosure designs without forced air cooling. |
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 | 40V max input, 1A output, no integrated reset or HOLD function, TO-220 package. | Lacks reset supervision and self-hold capability; requires external reset IC and latch circuit. | Choose when higher output current is needed and board space allows TO-220; not suitable for automotive reset-critical designs. |
| TPS7B8150QDGNRQ1 | 40V max input, 150mA, integrated reset (adjustable threshold), but no HOLD input or reverse-battery protection. | Requires external reverse-protection diode; lacks self-holding feature for ignition-controlled systems. | Prefer for ASIL-B functional safety systems needing diagnostic reset, but add external diode and latch if reverse-battery or HOLD functionality is required. |
Compared with LM2940T-5.0/NOPB and TPS7B8150QDGNRQ1, MAX5024LASA+ uniquely combines 65V input tolerance, –60V reverse-battery survival, integrated reset with 200ms timeout, and HOLD-enabled self-latching - making it the only single-chip solution for automotive BCMs requiring ignition-controlled power retention without external components.
Availability
MAX5024LASA+ is available at Aetrix Electronics and suitable for automotive body electronics, industrial fire alarm panels, telematics gateways, and PLC I/O modules requiring stable component supply with long lifecycle assurance.
Supply support for MAX5024LASA+ 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 and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing high reliability and integration density.
MAX5024LASA+ belongs to the MAX5023/MAX5024 family of high-voltage linear regulators engineered specifically for automotive power-supply applications demanding reverse-battery resilience, integrated reset, and self-holding control - reducing bill-of-materials count in ECU designs.
FAQ
What is the exact output voltage tolerance of MAX5024LASA+ over temperature?
The MAX5024LASA+ delivers +5.0V with ±4% tolerance (4.8V to 5.2V) across the full –40°C to +125°C operating range, as confirmed by the Electrical Characteristics table for the MAX5024L variant with SET = GND and IOUT = 1mA to 150mA. This tolerance includes line, load, and temperature effects - no additional calibration is required for automotive 5V rail compliance.
Does MAX5024LASA+ include a watchdog timer like the MAX5023?
No, MAX5024LASA+ does not include a watchdog timer. The watchdog input (WDI) is exclusive to the MAX5023 family; MAX5024LASA+ is the +5V fixed-output variant of the MAX5024 series and instead provides the SET input for optional adjustable operation. Its reset function is solely based on VOUT monitoring with a 4.625V threshold and 200ms timeout.
How does the HOLD input behave when left unconnected on MAX5024LASA+?
When HOLD is left floating on MAX5024LASA+, it is internally pulled up to OUT via a 4µA current source, resulting in VHOLD ≈ VOUT. This places the device in standard enable/disable mode - the regulator turns on only while EN is high and shuts off immediately when EN goes low. No self-holding occurs unless HOLD is actively pulled low after EN assertion.
What is the maximum power dissipation of MAX5024LASA+ at +105°C ambient?
At TA = +105°C, MAX5024LASA+ has a derated power dissipation of 892mW, calculated using PD = 1.538W – 0.01923W/°C × (105°C – 70°C) = 1.538W – 0.673W = 0.865W (rounded to 892mW per datasheet Figure 5). This limits usable output current at VIN = +14V and VOUT = +5V to approximately 99mA before thermal shutdown activates.
Can MAX5024LASA+ be used with ceramic output capacitors?
Yes, MAX5024LASA+ is stable with X7R or X5R ceramic capacitors ≥15µF and ESR < 0.5Ω across –40°C to +125°C. Z5U/Y5V dielectrics require ≥22µF due to capacitance loss at low temperatures. The device's internal compensation is optimized for these values - no external compensation network is needed.
MAX5024LASA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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
MAX5024LASA+ FAQ
1.How can I place an order for MAX5024LASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5024LASA+ 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 MAX5024LASA+ reliable?
The price and inventory of MAX5024LASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5024LASA+ is usually 5 days.
3.What payment methods are accepted for MAX5024LASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5024LASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5024LASA+?
MAX5024LASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5024LASA+ 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 MAX5024LASA+?
For technical support, including MAX5024LASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5024LASA+ requirements.
6.How does Aetrix verify that MAX5024LASA+ is sourced from the original manufacturer or authorized distributors?
All MAX5024LASA+ 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 MAX5024LASA+ meets industry standards.
7.What is the process for return or replacement of MAX5024LASA+?
All MAX5024LASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX5024LASA+, 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 MAX5024LASA+ part is unused and in its original packaging.
Return procedure for MAX5024LASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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