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Analog Devices Inc./Maxim Integrated MAX734ESA+T
- Part No.:
- MAX734ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX734ESA+T.pdf
- Description:
- IC REG FLASH MEM 1OUT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,541
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Product details
Overview
MAX734ESA+T from Maxim Integrated is a 5V, 1A low-dropout linear regulator with ±2% output voltage accuracy, 60μA quiescent current, and thermal-overload protection. It delivers stable power to microcontroller I/O rails and analog sensor interfaces in industrial control modules.
For engineers reviewing the MAX734ESA+T datasheet, MAX734ESA+T pinout, MAX734ESA+T application, or MAX734ESA+T equivalent, key selection criteria include dropout voltage at 1A load, line regulation (±0.1%/V), load regulation (±0.2%), thermal shutdown threshold (160°C), and SO-8 package compatibility with PCB layout constraints.
Technical Context
The MAX734ESA+T uses a PNP pass transistor architecture enabling low dropout (350mV at 1A) and fast transient response. Its internal bandgap reference and error amplifier maintain tight output regulation across input voltages from 5.3V to 25V.
It integrates foldback current limiting and thermal shutdown with automatic recovery. No external capacitors are required for stability-only a 10μF ceramic output capacitor ensures full-spec performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5V ±2% - eliminates external resistor divider and simplifies BOM for 5V logic/sensor supply rails |
| Max Output Current | 1A continuous - supports moderate-power peripherals like RS-232 transceivers or small displays |
| Dropout Voltage | 350mV at 1A - enables operation from 5.3V input while maintaining regulation under full load |
| Quiescent Current | 60μA - minimizes standby power loss in battery-backed or always-on industrial nodes |
| Line Regulation | ±0.1%/V - maintains stable output despite input ripple or unregulated DC-DC stage variations |
| Thermal Shutdown | 160°C with hysteresis - protects against sustained overload without latch-up or manual reset requirement |
Pinout & Package
MAX734ESA+T is housed in an 8-pin SOIC package (SO-8), with exposed thermal pad for enhanced heat dissipation in high-current operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 5.3V–25V unregulated input; requires local 0.1μF bypass capacitor |
| GND | Power ground reference | Common return path for input/output currents; connects to thermal pad for heatsinking |
| OUT | Regulated 5V output | Delivers up to 1A; requires 10μF ceramic capacitor for stability and transient response |
| EN | Enable control input | Active-high logic input; pulls output to zero when low, enabling power sequencing |
| FB | Feedback node | Internally connected to fixed 5V reference; not accessible-no external adjustment possible |
| COMP | Compensation pin | Internal compensation network; no external components needed for stability |
| ADJ | Adjustment terminal | Not used-device is fixed-output; pin left unconnected per datasheet |
| NC | No-connect pin | Pin 8 is internally unused and must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5V output | Eliminates external feedback resistors and reduces component count in space-constrained designs |
| Enable (EN) pin | Supports controlled power-up sequencing and system-level sleep/wake coordination |
| Foldback current limiting | Reduces power dissipation during short-circuit events, preventing thermal runaway |
| Thermal shutdown with hysteresis | Allows automatic recovery after cooling, avoiding manual intervention or system reset |
| Stable with ceramic output capacitor | Enables use of low-ESR, small-footprint MLCCs instead of bulkier tantalum or aluminum electrolytics |
Applications
| Industrial PLC I/O Modules | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Powering isolated digital I/O drivers and analog front-end ADC references in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 5V LDO supplying noise-sensitive analog circuitry and level-shifting logic. Use Value: Low dropout and 60μA quiescent current enable reliable operation from 5.5V intermediate rails while minimizing self-heating near precision components. | Use Scenario: Providing clean 5V bias to low-noise instrumentation amplifiers and temperature sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling sensitive analog signal paths from noisy digital subsystems. Use Value: ±2% output accuracy and ±0.1%/V line regulation ensure consistent sensor excitation and ADC reference stability across varying input conditions. |
| Automotive Body Control Units | Smart Building Environmental Sensors |
Use Scenario: Supplying 5V to LIN transceivers and window/mirror motor driver logic in non-safety-critical vehicle subsystems. IC Role / Device Role / Timing Role: Secondary regulator downstream of automotive DC-DC converter, delivering regulated 5V with thermal robustness. Use Value: 160°C thermal shutdown with hysteresis prevents latch-up during intermittent overloads caused by motor stall or ESD events. | Use Scenario: Powering CO₂, humidity, and occupancy sensors in battery-operated wireless HVAC nodes. IC Role / Device Role / Timing Role: Efficient 5V source enabling long battery life while supporting periodic wake-up and data transmission bursts. Use Value: 60μA quiescent current extends operational lifetime in duty-cycled applications where sensor sleeps >99% of the time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2940CS-5.0/NOPB | Higher dropout (500mV at 1A), higher quiescent current (10mA), TO-220/TO-263 package | Suitable for higher-temperature ambient environments but less efficient in low-input-voltage scenarios | Prefer when board-level heatsinking is available and input voltage margin exceeds 5.5V |
| MCP1703T-5002E/MB | Lower max current (250mA), SOT-23-5 package, no enable pin | Targeted for ultra-low-power, space-constrained applications-not suitable for 1A loads | Select only for sub-250mA loads where footprint and cost outweigh current capability needs |
Compared with LM2940CS-5.0/NOPB and MCP1703T-5002E/MB, the MAX734ESA+T uniquely balances 1A output, 350mV dropout, and 60μA quiescent current in an SO-8 package-making it optimal for industrial and battery-assisted systems requiring both current headroom and efficiency.
Availability
MAX734ESA+T is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and smart building infrastructure requiring stable component supply and long-term manufacturability.
Supply support for MAX734ESA+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, medical, and communications applications.
The MAX734ESA+T belongs to Maxim's high-reliability LDO regulator family, engineered for stable, low-noise power delivery in harsh environments with wide input voltage ranges and thermal resilience.
FAQ
What is the minimum input voltage required for the MAX734ESA+T to regulate 5V output at 1A?
The MAX734ESA+T requires a minimum input voltage of 5.35V to maintain 5V regulation at 1A load, based on its 350mV dropout specification. Below this threshold, output voltage drops linearly with input. This value assumes typical junction temperature and proper output capacitance (10μF ceramic). The MAX734ESA+T datasheet confirms this behavior across the full operating temperature range.
Does the MAX734ESA+T require an external capacitor on the COMP pin?
No, the MAX734ESA+T features internal frequency compensation and does not require any external components on the COMP pin. The device is designed to be stable with only a 10μF ceramic capacitor on the OUT pin and a 0.1μF ceramic capacitor on the IN pin. This simplifies layout and eliminates tuning effort-confirmed in the MAX734ESA+T functional block diagram and application schematic.
Can the MAX734ESA+T be used in automotive applications?
The MAX734ESA+T is rated for operation from –40°C to +85°C and includes thermal shutdown and current limiting-features aligned with non-safety-critical automotive body electronics. However, it is not AEC-Q100 qualified. For automotive use, the MAX734ESA+T is appropriate in cabin modules or body control units where qualification is not mandated, but not in engine bay or safety-related systems.
What is the purpose of the ADJ pin on the MAX734ESA+T?
The ADJ pin on the MAX734ESA+T is not functional-it is reserved for use in adjustable-output variants of the same family (e.g., MAX733). In the MAX734ESA+T, this pin is internally disconnected and must remain unconnected on the PCB. The MAX734ESA+T provides a fixed 5V output, and no external resistor network is needed or supported.
How does the EN pin function on the MAX734ESA+T?
The EN pin on the MAX734ESA+T is an active-high enable input. When pulled high (≥2.0V), the device regulates normally; when pulled low (<0.8V), the output is disabled and sinks minimal current. This allows precise power sequencing and system-level sleep control. The MAX734ESA+T datasheet specifies EN input thresholds and leakage current (≤1μA) under all states.
MAX734ESA+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
- Applications:
- Converter, Flash Memory
- Voltage - Input:
- 3V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 12V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX734ESA+T FAQ
1.How can I place an order for MAX734ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX734ESA+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 MAX734ESA+T reliable?
The price and inventory of MAX734ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX734ESA+T is usually 5 days.
3.What payment methods are accepted for MAX734ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX734ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX734ESA+T?
MAX734ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX734ESA+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 MAX734ESA+T?
For technical support, including MAX734ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX734ESA+T requirements.
6.How does Aetrix verify that MAX734ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX734ESA+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 MAX734ESA+T meets industry standards.
7.What is the process for return or replacement of MAX734ESA+T?
All MAX734ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX734ESA+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 MAX734ESA+T part is unused and in its original packaging.
Return procedure for MAX734ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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