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Analog Devices Inc./Maxim Integrated MAX5024TASA+T
- Part No.:
- MAX5024TASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX5024TASA+T.pdf
- Description:
- IC REG LIN POS ADJ 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,492
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Product details
Overview
MAX5024TASA+T 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, features -60V reverse-battery protection, and provides a fixed +3.3V output (T suffix). It is used in fire/smoke alarms and telecom/networking equipment requiring robust, wide-input voltage regulation with reliable reset signaling.
For engineers reviewing the MAX5024TASA+T datasheet, MAX5024TASA+T pinout, MAX5024TASA+T application, or MAX5024TASA+T equivalent, this page delivers verified electrical parameters, SO-EP package thermal data, self-holding control logic behavior, reset threshold tolerances, and real-world design constraints including dropout voltage, PSRR, and thermal shutdown hysteresis.
Technical Context
The MAX5024TASA+T implements a BiCMOS-based linear regulator with dual-mode feedback: SET pin grounded selects fixed +3.3V output (±3.6% tolerance at 1mA–150mA), while external resistor divider enables adjustable output from +2.5V to +11V. Its internal 1.248V reference and 4µA SET leakage support stable precision feedback.
It integrates an active-low open-drain RESET output asserting when VOUT falls below 2.970V–3.135V (−7.5% threshold), with 140–260ms timeout and 5µs delay. The HOLD input enables self-holding operation without external components-asserting HOLD low after EN activation maintains regulation even if EN returns low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +6.5V to +65V - supports direct connection to automotive battery rails including load-dump transients. |
| Output Voltage | +3.3V (fixed) - guaranteed 3.168V to 3.432V over full load (1–150mA) and temperature (−40°C to +125°C). |
| Max Output Current | 150mA - sustained delivery under thermal limits; derated to ~117mA at +95°C ambient with +14VIN/+5VOUT. |
| Quiescent Current | 58–140µA (no load) - enables always-on monitoring in low-power security and alarm systems. |
| Dropout Voltage | 0.9–1.5V at 150mA - defines minimum VIN–VOUT margin required to maintain regulation; critical for high-VIN, low-VOUT designs. |
| Reset Threshold | 2.970V–3.135V (−7.5%) - triggers RESET assertion during brownout; hysteresis ensures clean release above threshold. |
| Thermal Shutdown | 150°C junction, 20°C hysteresis - protects against sustained overload; enables safe cycling during fault conditions. |
Pinout & Package
MAX5024TASA+T uses an 8-pin SO-EP (Small Outline–Exposed Pad) surface-mount package with thermally enhanced copper pad soldered to PCB ground plane. The exposed pad improves thermal dissipation (θJA = 41°C/W, θJC = 2°C/W) and must be connected to GND for rated 1.538W power 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; withstands −60V reverse-battery stress. |
| 2 EN | Enable Input (active-high) | Pull ≥2.4V to enable regulation; internal 5MΩ pull-down ensures default OFF state; draws ≤4µA at +14V. |
| 3 GND | Ground / Thermal Heatsink | Reference node for all circuitry; exposed pad must be soldered to large copper area for thermal performance. |
| 4 RESET | Active-Low Open-Drain Reset Output | Asserts low when VOUT < 3.052V; sinks up to 3.2mA; requires external pull-up for µP interface; 5µs delay on VOUT fall. |
| 5 HOLD | Hold Input (active-low) | When pulled low after EN activation, maintains regulation even if EN goes low; internal 4µA pull-up to OUT. |
| 6 N.C. | No Connection | Not internally bonded; leave unconnected; no routing or stitching required. |
| 7 SET | Feedback Reference Input | Grounded for +3.3V fixed output; connects to resistor divider for adjustable mode; 0.5–100nA leakage ensures accuracy. |
| 8 OUT | Regulated Output | Delivers up to 150mA; requires ≥15µF output capacitor (ESR < 0.5Ω); supports ceramic, tantalum, or polymer types. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Holding Control Logic | HOLD input enables latch-like behavior-regulator stays ON after initial EN pulse, eliminating need for external latching circuitry. |
| Reverse-Battery Protection | Withstands −60V at IN pin without damage or excessive reverse current (<10µA), critical for automotive jump-start scenarios. |
| Integrated µP Reset Supervisor | Monitors VOUT directly using same bandgap reference; asserts open-drain RESET with programmable −7.5% threshold and 200ms timeout. |
| Thermally Enhanced SO-EP Package | 8-pin SOIC with exposed pad dissipates 1.538W at +70°C ambient; 19.2mW/°C derating above +70°C enables high-power density designs. |
| Wide Automotive Temperature Range | Guaranteed operation from −40°C to +125°C junction; all electrical specs validated across range-not just characterized. |
Applications
| Fire/Smoke Alarms | Automotive Body Control Modules |
|---|---|
Use Scenario: Standby power supply for smoke sensor ICs and wireless transceivers in battery-backed residential alarm panels. IC Role / Device Role / Timing Role: Primary 3.3V rail regulator with integrated reset supervision ensuring MCU boot integrity after brownout events. Use Value: −60V reverse-battery tolerance prevents latch-up during service disconnect; 60µA quiescent current extends battery life beyond 5 years. |
Use Scenario: Powering CAN transceiver and microcontroller in door module or seat control unit exposed to 12V/24V battery rails. IC Role / Device Role / Timing Role: High-input linear regulator providing stable 3.3V supply with self-holding logic synchronized to ignition switch transitions. Use Value: HOLD input eliminates need for external keep-alive circuit; EN/HOLD timing allows seamless transition from ignition ON to accessory mode. |
| Industrial PLC I/O Modules | Telecom Remote Terminal Units |
Use Scenario: Powering isolated ADCs and digital isolators in DIN-rail mounted programmable logic controller expansion modules. IC Role / Device Role / Timing Role: Input-stage regulator accepting wide-range DC supply (18–60VDC) while delivering precise 3.3V for sensitive analog front-ends. Use Value: 1.5V dropout at 150mA enables efficient operation even at low VIN; ±0.5mV/V line regulation ensures ADC reference stability. |
Use Scenario: Providing regulated 3.3V to Ethernet PHY and PoE interface ICs in outdoor fiber access nodes with unregulated DC inputs. IC Role / Device Role / Timing Role: Primary local regulator with RESET output tied to PHY reset pin, ensuring clean initialization after power recovery. Use Value: 54dB PSRR at 100Hz suppresses ripple from upstream switching converters; 150mA output supports multi-PHY configurations. |
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 |
|---|---|---|---|
| MAX5024SASA+T | Fixed +3.3V output with −12.5% reset threshold (2.805V–2.970V) vs. MAX5024TASA+T's −7.5% (2.970V–3.135V). | Suitable where deeper brownout detection is required before system reset, e.g., in battery-fail-safe telemetry units. | Select MAX5024SASA+T only if tighter reset hysteresis and lower threshold are needed; otherwise MAX5024TASA+T offers wider noise margin. |
| TLV71733PDQNR | Lower input range (up to +5.5V), 150mA output, 25µA IQ, but lacks reverse-battery protection, RESET, HOLD, or SET functionality. | Applicable only in low-voltage, non-automotive systems where supervision features are handled externally. | Choose TLV71733PDQNR only for cost-sensitive, space-constrained consumer applications without reverse-voltage or reset requirements. |
Compared with MAX5024SASA+T, MAX5024TASA+T provides higher reset threshold for improved noise immunity; compared with TLV71733PDQNR, it delivers automotive-grade protection and integrated supervision-making it irreplaceable in safety-critical 12V/24V systems.
Availability
MAX5024TASA+T is available at Aetrix Electronics and suitable for automotive body electronics, fire alarm systems, and industrial PLC I/O modules requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX5024TASA+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 MAX5023/MAX5024 product line targets high-reliability power-supply supervision in harsh environments, combining wide-input linear regulation with integrated reset, hold control, and reverse-battery protection.
FAQ
What is the exact reset threshold voltage for MAX5024TASA+T?
The MAX5024TASA+T has a −7.5% reset threshold, meaning RESET asserts when VOUT drops below 2.970V (min), 3.052V (typ), or 3.135V (max) - guaranteed across −40°C to +125°C. This threshold is set by internal trimming and applies specifically to the T-suffix variant with +3.3V output; the MAX5024TASA+T datasheet Table "Reset Threshold" confirms these values under SET = GND condition.
Does MAX5024TASA+T support adjustable output voltage?
Yes, the MAX5024TASA+T supports adjustable output via its SET pin: grounding SET selects the fixed +3.3V output, while connecting SET to a resistive divider between OUT and GND enables outputs from +2.5V to +11V. The internal 1.248V reference and low SET leakage (≤100nA) ensure accuracy; the MAX5024TASA+T Electrical Characteristics table specifies VSET = 1.223–1.273V and ISET ≤ 100nA.
What thermal derating applies to MAX5024TASA+T at +95°C ambient?
At +95°C ambient, the MAX5024TASA+T's maximum power dissipation is derated to 1.057W (calculated as 1.538W − 0.01923W/°C × (95°C − 70°C)). With +14V input and +3.3V output, this allows ~44.9mA continuous output current - confirmed in the datasheet Example 2. The SO-EP package's θJA = 41°C/W and mandatory exposed-pad grounding are essential to achieve this rating.
How does the HOLD function behave in MAX5024TASA+T?
In the MAX5024TASA+T, pulling HOLD low *after* EN is asserted forces the regulator to remain ON even if EN is later pulled low - enabling self-holding without external components. Releasing HOLD (by disconnecting or allowing internal 4µA pull-up to OUT to raise voltage) shuts down the regulator. This behavior is defined in the Truth Table (Order #4) and Figure 3 timing diagram of the MAX5024TASA+T datasheet.
Is MAX5024TASA+T qualified for automotive applications?
Yes, MAX5024TASA+T is specified for the automotive temperature range (−40°C to +125°C) and carries the "/V" automotive qualification suffix in its full ordering code (MAX5024TASA/V+). Though the base part number MAX5024TASA+T omits "/V", the "ASA" package code and datasheet Applications section explicitly list "Automotive" use cases, and all electrical characteristics are guaranteed across the full automotive temperature range.
MAX5024TASA+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
MAX5024TASA+T FAQ
1.How can I place an order for MAX5024TASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5024TASA+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 MAX5024TASA+T reliable?
The price and inventory of MAX5024TASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5024TASA+T is usually 5 days.
3.What payment methods are accepted for MAX5024TASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5024TASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5024TASA+T?
MAX5024TASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5024TASA+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 MAX5024TASA+T?
For technical support, including MAX5024TASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5024TASA+T requirements.
6.How does Aetrix verify that MAX5024TASA+T is sourced from the original manufacturer or authorized distributors?
All MAX5024TASA+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 MAX5024TASA+T meets industry standards.
7.What is the process for return or replacement of MAX5024TASA+T?
All MAX5024TASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX5024TASA+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 MAX5024TASA+T part is unused and in its original packaging.
Return procedure for MAX5024TASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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