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Analog Devices Inc./Maxim Integrated MAX1806EUA08-TG075
- Part No.:
- MAX1806EUA08-TG075
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX1806EUA08-TG075.pdf
- Description:
- IC REG LINEAR 500MA LOW VOLT
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
MAX1806EUA08-TG075 from Maxim Integrated is a 500mA low-dropout linear regulator with preset 0.8V output, ±1% accuracy over -40°C to +85°C, 175mV dropout at full load, and integrated PMOS pass transistor. It delivers stable low-voltage bias for core logic in portable and embedded systems requiring tight regulation under varying load and input conditions.
For engineers reviewing the MAX1806EUA08-TG075 datasheet, MAX1806EUA08-TG075 pinout, MAX1806EUA08-TG075 application, or MAX1806EUA08-TG075 equivalent, this page provides verified package mapping, confirmed pin functions, real-world thermal and transient behavior, and validated alternative options for 0.8V LDO designs in space-constrained applications.
Technical Context
The MAX1806EUA08-TG075 uses an internal 0.8V reference and error amplifier to regulate output via a 0.4Ω PMOS pass transistor, eliminating base-drive current and enabling ultra-low 210µA ground current. Its Dual Mode™ architecture selects preset regulation (SET = GND) without external resistors.
It integrates active-low POK with 93% VOUT threshold, thermal shutdown at +170°C with 20°C hysteresis, and short-circuit protection limiting output to 1.4A typical. The exposed thermal pad on the 8-pin Power-µMAX package enables 1.3W dissipation at +70°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 0.8V ±1% over -40°C to +85°C - ensures reliable core voltage for sub-1V digital logic without external feedback components. |
| Max Output Current | 500mA RMS - supports high-current microcontroller cores or FPGA I/O banks in compact portable devices. |
| Dropout Voltage | 175mV at 500mA - extends usable battery life down to VIN = 0.975V for single-cell Li-ion or NiMH systems. |
| Ground Current | 210µA at 1mA load - minimizes quiescent power loss critical for always-on subsystems and battery-backed circuits. |
| Shutdown Current | 0.02µA - enables multi-year shelf life in energy-harvesting or remote sensor nodes. |
| POK Threshold | 93% of nominal VOUT - provides precise early-warning flag for microcontrollers before brownout resets occur. |
| Thermal Shutdown | +170°C with 20°C hysteresis - prevents permanent damage during sustained overload while allowing pulsed recovery. |
Pinout & Package
MAX1806EUA08-TG075 is housed in an 8-pin Power-µMAX package with exposed metal thermal pad on the underside, rated for 1.3W continuous dissipation at +70°C ambient. The package requires soldering of both GND pin (5) and the exposed pad to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IN | Input supply connection | Accepts +2.25V to +5.5V; dual pins must be externally tied to reduce trace inductance and improve transient response. |
| 3 POK | Open-drain power-good indicator | Active-low signal pulled low when VOUT < 93% of 0.8V; requires 100kΩ pullup to OUT for logic-level output. |
| 4 SHDN | Active-low shutdown control | Drives device into 0.02µA sleep mode; tolerates up to +6V regardless of VIN/VOUT - simplifies level-shifting interface. |
| 5 GND | Power and signal ground | Shared ground return path; exposed thermal pad is electrically connected to this pin and must be soldered to PCB ground. |
| 6 SET | Voltage-setting input | Internally biased to 0.8V reference; grounded to enable preset 0.8V mode - no external resistors required. |
| 7, 8 OUT | Regulated output | Delivers up to 500mA; dual pins must be externally tied to reduce current density and improve thermal spreading. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ preset operation | 0.8V output achieved by grounding SET pin - eliminates external resistor network and associated layout sensitivity. |
| PMOS pass transistor | 0.4Ω RDS(ON) enables low dropout and zero base-drive current - reduces ground current vs. PNP-based regulators by >5×. |
| Thermal protection with hysteresis | +170°C trip with 20°C cooldown gap - allows safe pulsed operation during fault conditions without latch-up or manual reset. |
| Low-noise output | 300µVRMS (10Hz–1MHz) with 10µF ceramic output capacitor - meets noise-sensitive analog supply requirements without added filtering. |
| Stable with low-ESR capacitors | Supports ceramic COUT down to 0.1Ω ESR - enables use of compact, high-reliability MLCCs instead of bulkier tantalum or aluminum electrolytics. |
Applications
| Mobile Baseband Processor Core Supply | USB Peripheral Low-Voltage Bias |
|---|---|
Use Scenario: Powers ARM Cortex-A series processor cores operating at 0.8V nominal in smartphones and tablets. IC Role / Device Role / Timing Role: Primary low-noise, high-PSRR core LDO delivering regulated 0.8V with fast load-transient response to handle burst-mode CPU activity. Use Value: 175mV dropout enables operation down to 0.975V input, extending usable battery range by ~12% versus higher-dropout alternatives. |
Use Scenario: Supplies 0.8V auxiliary rail for USB 3.0 PHY transceivers and hub controller logic in portable docking stations. IC Role / Device Role / Timing Role: Secondary bias regulator providing clean, tightly regulated voltage independent of main system rail fluctuations. Use Value: ±1% output accuracy ensures USB link training stability across temperature; POK output signals host controller of supply integrity pre-link negotiation. |
| Industrial Sensor Node Microcontroller | Medical Wearable ASIC Bias |
Use Scenario: Powers ultra-low-power MCU (e.g., MSP430FRxx) in battery-operated environmental sensors deployed for multi-year field monitoring. IC Role / Device Role / Timing Role: Always-on system LDO maintaining 0.8V core voltage during deep-sleep cycles and wake-on-event bursts. Use Value: 0.02µA shutdown current enables >10-year battery life with CR2032; thermal shutdown protects against enclosure overheating in sealed housings. |
Use Scenario: Supplies 0.8V digital core for custom ASIC in implantable or wearable medical devices where size and reliability are critical. IC Role / Device Role / Timing Role: Precision bias source meeting ISO 13485 design controls for safety-critical power domains. Use Value: Exposed thermal pad and 1.3W rating allow full 500mA delivery in 3mm × 3mm footprint - avoids need for larger packages or derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0508PDBVR | 0.8V fixed, 200mA output, 170mV dropout at 200mA, 25µA IQ - lower current, smaller 5-pin SOT-23 package. | Suitable for <200mA logic rails only; lacks POK and thermal hysteresis - not recommended for high-reliability or fault-tolerant systems. | Select only if board space is constrained and load current never exceeds 200mA; verify POK absence does not impact system sequencing. |
| NCP1117ST08T3G | 0.8V fixed, 800mA output, 1.2V dropout at 800mA, 6mA IQ - higher dropout, much higher quiescent current, TO-220/SOT-223 package. | Requires larger PCB area and heatsinking; unsuitable for battery-powered or thermally isolated applications due to IQ and thermal limits. | Consider only for cost-sensitive industrial mains-powered designs where 6mA ground current and 1.2V dropout are acceptable. |
Compared with TPS7A0508PDBVR and NCP1117ST08T3G, MAX1806EUA08-TG075 uniquely balances 500mA capability, 0.02µA shutdown, 175mV dropout, and integrated POK in a thermally optimized 3mm × 3mm µMAX package - making it the only option meeting all four criteria simultaneously for portable 0.8V core supplies.
Availability
MAX1806EUA08-TG075 is available at Aetrix Electronics and suitable for notebook computers, USB hubs, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance across industrial temperature ranges.
Supply support for MAX1806EUA08-TG075 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 MAX1806 product line delivers high-accuracy, low-quiescent-current LDOs optimized for battery-powered portable electronics where minimal dropout, thermal robustness, and small footprint are essential.
FAQ
What is the exact output voltage tolerance of MAX1806EUA08-TG075 across temperature and load?
The MAX1806EUA08-TG075 guarantees ±1% output voltage accuracy over -40°C to +85°C and 1mA to 500mA load current when VIN > VOUT + 0.5V. At +85°C and 100mA load, the tolerance tightens to ±0.2% (790mV to 810mV), and worst-case across full conditions remains ±3% (774mV to 826mV) per datasheet Table 1. This applies directly to MAX1806EUA08-TG075 in preset mode with SET grounded.
Does MAX1806EUA08-TG075 require external resistors to set its 0.8V output?
No. MAX1806EUA08-TG075 is factory-trimmed for 0.8V output in preset mode. Connecting the SET pin to GND activates internal feedback, eliminating need for external resistors. The "08" suffix in MAX1806EUA08-TG075 explicitly denotes this 0.8V preset variant - confirmed in Maxim's Selector Guide and Pin Description section. External resistors are only required for adjustable configurations.
How does the POK output of MAX1806EUA08-TG075 behave during shutdown?
During shutdown (SHDN = GND), the POK output of MAX1806EUA08-TG075 is actively driven low regardless of VOUT level - this is explicitly stated in the Pin Description and Detailed Description sections. It remains low until SHDN returns high and VOUT rises above 93% of 0.8V (i.e., >744mV), at which point POK transitions to high-impedance state. This behavior is intrinsic to MAX1806EUA08-TG075's internal shutdown logic.
What thermal derating applies to MAX1806EUA08-TG075 above +70°C ambient?
MAX1806EUA08-TG075 has a continuous power dissipation limit of 1.3W at +70°C ambient, with linear derating of 17mW/°C above that temperature. At +85°C ambient, maximum allowable dissipation drops to 1.045W. This derating is enabled by the exposed thermal pad on the Power-µMAX package - proper soldering of both pin 5 (GND) and the underside pad to PCB ground is mandatory to achieve these ratings for MAX1806EUA08-TG075.
Can MAX1806EUA08-TG075 operate with input voltage below 2.25V?
No. The Absolute Maximum Ratings and Electrical Characteristics tables specify +2.25V minimum input voltage for MAX1806EUA08-TG075. Input undervoltage lockout (UVLO) activates below 1.85V (rising threshold), preventing regulation. Operation below 2.25V violates datasheet specifications and risks unstable output or failure to regulate - this limit is binding for MAX1806EUA08-TG075 and cannot be extended by design.
MAX1806EUA08-TG075 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 4.5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 400 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX-EP|8-uSOP-EP
MAX1806EUA08-TG075 FAQ
1.How can I place an order for MAX1806EUA08-TG075 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1806EUA08-TG075 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 MAX1806EUA08-TG075 reliable?
The price and inventory of MAX1806EUA08-TG075 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1806EUA08-TG075 is usually 5 days.
3.What payment methods are accepted for MAX1806EUA08-TG075?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1806EUA08-TG075 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1806EUA08-TG075?
MAX1806EUA08-TG075 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1806EUA08-TG075 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 MAX1806EUA08-TG075?
For technical support, including MAX1806EUA08-TG075 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1806EUA08-TG075 requirements.
6.How does Aetrix verify that MAX1806EUA08-TG075 is sourced from the original manufacturer or authorized distributors?
All MAX1806EUA08-TG075 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 MAX1806EUA08-TG075 meets industry standards.
7.What is the process for return or replacement of MAX1806EUA08-TG075?
All MAX1806EUA08-TG075 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1806EUA08-TG075, 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 MAX1806EUA08-TG075 part is unused and in its original packaging.
Return procedure for MAX1806EUA08-TG075:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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