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Analog Devices Inc./Maxim Integrated MAX1792EUA20
- Part No.:
- MAX1792EUA20
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX1792EUA20.pdf
- Description:
- 500MA, LOW-DROPOUT LINEAR REGULA
- Quantity:
- Payment:
- Shipping:
Inventory:1,648
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Product details
Overview
The MAX1792EUA20 from Maxim Integrated is a 500mA low-dropout linear regulator with preset 2.0V output, operating from +2.5V to +5.5V input, delivering guaranteed 500mA load current with 130mV dropout at full load, ±1% output voltage accuracy over temperature and load, and integrated active-low open-drain reset with 4ms timeout - used in portable power rails for microcontrollers and USB peripherals.
For engineers reviewing the MAX1792EUA20 datasheet, MAX1792EUA20 pinout, MAX1792EUA20 application, or MAX1792EUA20 equivalent, key selection criteria include dropout performance at 500mA, shutdown current (0.1µA), thermal protection behavior, reset threshold tolerance (±3%), and compatibility with 3.3µF low-ESR ceramic output capacitors in space-constrained designs.
Technical Context
The MAX1792EUA20 employs an internal PMOS pass transistor (RDS(ON) ≈ 0.25Ω) enabling low dropout and load-independent 80µA ground current. Its Dual Mode™ architecture selects between factory-trimmed 2.0V output (SET = GND) or adjustable mode via external resistor divider (SET biased at 1.25V reference).
Reset functionality monitors VOUT against 93% of nominal output (1.86V for 2.0V version), asserting RST low until VOUT stabilizes and holds high-impedance for ≥4ms. Thermal shutdown activates at +170°C with 20°C hysteresis, and short-circuit current limit is 0.55–1.8A depending on output regulation status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 2.0V ±1% (TA = 0°C to +85°C, IOUT = 1mA–500mA) |
| Max Output Current | 500mA RMS continuous; short-circuit safe indefinitely |
| Dropout Voltage | 130mV at 500mA (typical), enabling operation down to VIN = 2.13V |
| Ground Current | 80µA (typical) at light load; ≤130µA at 500mA, independent of load |
| Shutdown Current | 0.1µA (max) with SHDN = GND, enabling ultra-low-power sleep states |
| Reset Threshold | 93% of nominal VOUT (1.86V), with 4ms release delay after regulation recovery |
| Thermal Shutdown | Activates at +170°C junction temperature; 20°C hysteresis prevents oscillation |
Pinout & Package
The MAX1792EUA20 is housed in an 8-pin Power-µMAX package (U8E+2) with exposed thermal pad (EP) on underside, requiring soldering to PCB ground plane for thermal management and electrical grounding. Package outline: 3.0mm × 3.0mm × 0.8mm, 1.3W power dissipation rating at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IN | Input supply connection | Accepts +2.5V to +5.5V; both pins must be connected externally to same source; bypass with 1µF ceramic capacitor |
| 3 RST | Open-drain active-low reset output | Pulls low when VOUT < 1.86V; requires external pullup (e.g., 100kΩ to OUT) for logic-level signal to µC |
| 4 SHDN | Active-low shutdown control | Drives device into 0.1µA quiescent state; logic low also forces RST low and discharges OUT via internal 5kΩ resistor |
| 5 GND | Power and signal ground | Primary ground return path; also serves as heatsink - must be soldered to large copper area or ground plane |
| 6 SET | Voltage-setting input | Connected to GND for preset 2.0V mode; connects to resistive divider for adjustable outputs (1.25V–5.0V) |
| 7, 8 OUT | Regulated output | Sources up to 500mA; bypass with 3.3µF low-ESR ceramic capacitor; both pins tied externally |
| EP | Exposed thermal pad | Not electrically connected internally; must be soldered to PCB ground plane to achieve θJA < 60°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ output selection | Factory-trimmed 2.0V output (SET = GND) or adjustable 1.25V–5.0V (external resistor divider), eliminating need for separate fixed/adjustable SKUs |
| Ultra-low shutdown current | 0.1µA max enables multi-week battery standby in always-on IoT sensors without compromising wake-up latency |
| Integrated reset with timing control | 4ms RST release delay ensures stable power-on sequencing for microcontrollers before firmware execution begins |
| Thermal overload protection with hysteresis | +170°C trip point with 20°C cooldown margin prevents thermal runaway during sustained overload or poor heatsinking |
| PMOS pass transistor architecture | Eliminates base-drive current loss, maintaining 80µA ground current even at 500mA load and in dropout condition |
Applications
| USB Peripheral Power Rail | Microcontroller Core Supply |
|---|---|
|
Use Scenario: Powers USB 2.0 hub controller ICs requiring clean, stable 2.0V rail from 3.3V or 5V system bus. IC Role / Device Role / Timing Role: Primary LDO providing regulated 2.0V core voltage with fast transient response to handle burst data transfers. Use Value: 130mV dropout allows operation from partially discharged batteries or noisy intermediate rails; 115µVRMS noise avoids digital logic errors. |
Use Scenario: Supplies 2.0V core voltage to low-power ARM Cortex-M0+ MCU in handheld medical sensor. IC Role / Device Role / Timing Role: Main system regulator with integrated RST output used as POR signal to MCU reset pin. Use Value: 0.1µA shutdown current extends coin-cell battery life to >2 years in sleep mode; ±1% accuracy maintains ADC reference stability. |
| Portable Audio Codec Bias | Industrial Sensor Signal Chain |
|
Use Scenario: Generates 2.0V bias for MEMS microphone preamp and audio ADC in Bluetooth headset. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching noise sources. Use Value: 115µVRMS output noise (10Hz–1MHz) and -50dB PSRR at 1kHz preserve SNR in 24-bit audio paths. |
Use Scenario: Powers precision 2.0V reference and op-amp stages in 4–20mA loop transmitter module. IC Role / Device Role / Timing Role: Stable analog supply ensuring <0.01% gain drift across -40°C to +85°C industrial temperature range. Use Value: ±1% output accuracy maintained over full load (1mA–500mA) and temperature ensures calibrated output compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B202MR-G | 200mA max output, 150mV dropout at 200mA, no reset output, SOT-25 package | Limited to lower-current analog rails; lacks power-on-reset signaling capability | Select when board space is constrained and reset function is handled elsewhere |
| Analog Devices ADP1712AUJZ-2.0-R7 | 300mA max output, 170mV dropout at 300mA, 1.5µA quiescent current, no reset, TSOT-5 package | Higher ground current reduces battery life in ultra-low-power modes; no integrated monitoring | Choose if higher PSRR (>65dB @ 1kHz) is prioritized over shutdown current and reset integration |
Compared with the MAX1792EUA20, the XC6219B202MR-G offers smaller footprint but sacrifices 300mA output headroom and reset functionality, while the ADP1712AUJZ-2.0-R7 trades 0.1µA shutdown for better AC rejection yet cannot sustain 500mA loads or provide autonomous power-good indication.
Availability
MAX1792EUA20 is available at Aetrix Electronics and suitable for USB peripheral power rails, microcontroller core supplies, portable audio codec biasing, industrial sensor signal chains, and docking station auxiliary rails requiring stable component supply with guaranteed long-term availability.
Supply support for MAX1792EUA20 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and portable applications.
The MAX1792 series was designed specifically for battery-powered portable equipment demanding high output current, ultra-low quiescent current, and integrated power-monitoring features in minimal footprint packages.
FAQ
What is the guaranteed output voltage accuracy of the MAX1792EUA20 over temperature and load?
The MAX1792EUA20 guarantees ±1% output voltage accuracy for preset 2.0V operation across IOUT = 1mA to 500mA and TA = 0°C to +85°C. At extended temperature (-40°C to +85°C), accuracy degrades to ±2% under full load, and ±3% worst-case across all conditions per datasheet Electrical Characteristics table.
Can the MAX1792EUA20 be used in adjustable-output configuration despite its 2.0V preset suffix?
Yes, the MAX1792EUA20 supports adjustable mode: connect the SET pin to a resistive divider between OUT and GND instead of grounding it. The internal 1.25V reference remains active, allowing output tuning from 1.25V to 5.0V using R1 = R2 × ((VOUT/1.25) − 1), where R2 is 25kΩ–100kΩ.
What is the minimum input voltage required for the MAX1792EUA20 to maintain regulation at 500mA load?
The MAX1792EUA20 requires VIN ≥ VOUT + dropout voltage. With 130mV typical dropout at 500mA, minimum VIN = 2.0V + 0.13V = 2.13V. However, absolute minimum VIN is specified as +2.5V in Absolute Maximum Ratings, so functional minimum is 2.5V regardless of dropout - below this, UVLO disables regulation.
How does the RST pin behave during shutdown of the MAX1792EUA20?
During shutdown (SHDN = GND), the MAX1792EUA20 forces RST low regardless of VOUT level. This differs from normal operation, where RST reflects actual output regulation status. The forced low state provides unambiguous power-fail signaling to downstream logic during intentional system sleep.
Is the exposed thermal pad (EP) on the MAX1792EUA20 electrically connected to GND internally?
No, the exposed thermal pad (EP) on the MAX1792EUA20 is not internally connected to any circuit node. It must be externally soldered to the PCB ground plane to serve as a thermal conduction path and mechanical anchor. Leaving EP floating severely degrades thermal performance and risks exceeding junction temperature limits under load.
MAX1792EUA20 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):
- 1.25V (2V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 250 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Reset
- 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
MAX1792EUA20 FAQ
1.How can I place an order for MAX1792EUA20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1792EUA20 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 MAX1792EUA20 reliable?
The price and inventory of MAX1792EUA20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1792EUA20 is usually 5 days.
3.What payment methods are accepted for MAX1792EUA20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1792EUA20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1792EUA20?
MAX1792EUA20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1792EUA20 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 MAX1792EUA20?
For technical support, including MAX1792EUA20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1792EUA20 requirements.
6.How does Aetrix verify that MAX1792EUA20 is sourced from the original manufacturer or authorized distributors?
All MAX1792EUA20 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 MAX1792EUA20 meets industry standards.
7.What is the process for return or replacement of MAX1792EUA20?
All MAX1792EUA20 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1792EUA20, 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 MAX1792EUA20 part is unused and in its original packaging.
Return procedure for MAX1792EUA20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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