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Analog Devices Inc./Maxim Integrated MAX1792EUA15
- Part No.:
- MAX1792EUA15
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX1792EUA15.pdf
- Description:
- IC REG LIN POS ADJ 500MA 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,619
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Product details
Overview
MAX1792EUA15 from Maxim Integrated is a 500mA low-dropout linear regulator with preset 1.5V output, operating from +2.5V to +5.5V input, featuring 130mV dropout at full load, ±1% output voltage accuracy over temperature, and integrated active-low open-drain reset with 4ms timeout - used in portable power rails for microcontrollers and USB peripherals in notebook computers and docking stations.
For engineers reviewing the MAX1792EUA15 datasheet, MAX1792EUA15 pinout, MAX1792EUA15 application, or MAX1792EUA15 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-chain support details specific to the 1.5V fixed-output variant in Power-µMAX package.
Technical Context
The MAX1792EUA15 uses an internal PMOS pass transistor (RDS(ON) ≈ 0.25Ω) enabling low 130mV dropout at 500mA and 80µA ground current independent of load. Its Dual Mode™ architecture selects between factory-trimmed 1.5V output (SET tied to GND) and adjustable mode via external resistor divider.
It integrates thermal shutdown at +170°C with 20°C hysteresis, short-circuit protection sustaining indefinite ground shorts, and a precision reset comparator monitoring VOUT at 93% nominal threshold with guaranteed 1.5–8ms release delay after regulation recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 1.5V ±1% (at IOUT = 100mA, TA = 0°C to +85°C); enables stable core logic rail without external feedback components. |
| Dropout Voltage | 130mV at 500mA load; allows operation down to VIN = 1.63V, extending usable battery life in single-cell Li-ion or 2xAA systems. |
| Ground Current | 80µA typical at light load; remains constant across output current, critical for battery runtime in always-on subsystems. |
| Shutdown Current | 0.1µA max; reduces system standby power to nanoampere level when host controller asserts SHDN low. |
| Reset Threshold | 93% of nominal VOUT (i.e., 1.395V), with 4ms timeout; provides reliable power-on-reset signaling to µC without external timing components. |
| Thermal Protection | Activates at +170°C junction temperature with 20°C hysteresis; prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Input Voltage Range | +2.5V to +5.5V; supports direct connection to USB 5V, boosted 3.3V rails, or dual-cell alkaline inputs. |
Pinout & Package
The MAX1792EUA15 is housed in an 8-pin Power-µMAX package (U8E+2 outline) with exposed thermal pad (EP) on underside, requiring soldering to PCB ground plane for thermal performance. Package dimensions: 3.0mm × 3.0mm × 0.8mm, 1.3W power dissipation rating at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - IN | Regulator input supply | Accepts +2.5V to +5.5V; both pins must be connected together externally and bypassed with 1µF ceramic capacitor to GND for stability. |
| 3 - RST | Open-drain active-low reset output | Pulls low when VOUT < 1.395V; requires external 100kΩ pullup to VOUT to generate logic-high reset signal for µC POR. |
| 4 - SHDN | Active-low shutdown control | Drives regulator into 0.1µA sleep state when pulled low; tolerant up to +6V, enabling direct interface with higher-voltage logic. |
| 5 - GND | Power and signal ground | Primary ground reference and secondary thermal path; must be connected to large copper area or ground plane with multiple vias. |
| 6 - SET | Voltage-setting input | Tied to GND for 1.5V preset mode; unused in MAX1792EUA15 configuration; floating or misconnected risks regulation failure. |
| 7, 8 - OUT | Regulated output | Delivers up to 500mA; both pins must be connected together externally and bypassed with 3.3µF low-ESR ceramic capacitor to GND. |
| EP - Exposed Pad | Thermal pad | Not electrically connected internally; must be soldered to PCB ground plane to achieve θJA ≤ 65°C/W and sustain full 500mA output. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 500mA output current | Sustains full-rated load across -40°C to +85°C ambient with no derating below 1.5V output, enabling single-regulator solutions for FPGA I/O banks. |
| Low 130mV dropout at 500mA | Enables >90% efficiency at 1.5V/500mA with 2.0V input, critical for energy harvesting and ultra-low-voltage battery systems. |
| ±1% output voltage accuracy | Meets tight tolerance requirements for 1.5V DDR memory termination and low-voltage microcontroller cores without post-assembly trimming. |
| Integrated 4ms reset timeout | Eliminates need for external RC timing network; ensures deterministic µC initialization after brownout recovery or cold start. |
| 0.1µA shutdown current | Reduces system quiescent power to sub-microwatt level, supporting multi-year battery life in IoT sensor nodes and wearables. |
| Thermal shutdown with hysteresis | Prevents thermal runaway during transient overloads while allowing automatic recovery once junction cools by 20°C. |
Applications
| USB Hub Power Management | Notebook Computer Core Rail |
|---|---|
|
Use Scenario: Providing clean, regulated 1.5V power to USB 3.0 hub controller ICs and downstream port transceivers. IC Role / Device Role / Timing Role: Primary LDO delivering stable 1.5V VDDIO rail with fast transient response to handle burst-mode USB packet traffic. Use Value: 130mV dropout enables operation from shared 1.8V or 2.5V intermediate bus, reducing need for additional DC-DC stages. |
Use Scenario: Supplying 1.5V to embedded controller (EC) or super I/O chip in ultrabook platforms during S3/S4 suspend states. IC Role / Device Role / Timing Role: Always-on LDO maintaining real-time clock and keyboard controller power with <0.1µA shutdown leakage. Use Value: 80µA ground current ensures >10-year battery backup life for RTC using CR2032 coin cell. |
| Docking Station Peripheral Interface | Industrial Handheld Terminal |
|
Use Scenario: Powering 1.5V LVDS serializer/deserializer pairs in Thunderbolt-compatible docking station video interfaces. IC Role / Device Role / Timing Role: Low-noise LDO supplying analog front-end bias for high-speed differential signaling with <115µVRMS output noise. Use Value: 1.5V ±1% accuracy maintains signal integrity margin for 10Gbps serial links under varying load and temperature. |
Use Scenario: Regulating 1.5V for ARM Cortex-M7 MCU core in ruggedized handheld terminals operating in -30°C to +70°C environments. IC Role / Device Role / Timing Role: Industrial-grade LDO with thermal shutdown protecting against enclosure overheating during continuous barcode scanning. Use Value: +170°C thermal trip point with 20°C hysteresis prevents lockup during extended use in sealed enclosures without forced airflow. |
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 |
|---|---|---|---|
| TPS79515DRBR | 1.5V fixed, 500mA, 170mV dropout at 500mA, 250µA quiescent current, no integrated reset output | Lacks RST pin; requires external supervisor IC for power-on-reset functionality | Select when board space permits separate reset IC and lower cost is prioritized over integration. |
| MCP1703T-1502E/MB | 1.5V fixed, 250mA max output, 600mV dropout at 250mA, 4µA quiescent current, no thermal shutdown | Halved current capability and no thermal protection limit use in thermally constrained or high-load scenarios | Choose only for ultra-low-quiescent applications with <250mA loads and robust thermal design. |
Compared with TPS79515DRBR and MCP1703T-1502E/MB, the MAX1792EUA15 uniquely combines 500mA output, 130mV dropout, integrated reset, and thermal protection in a single 3mm × 3mm package - making it optimal for space-constrained, battery-powered systems requiring full fault coverage.
Availability
MAX1792EUA15 is available at Aetrix Electronics and suitable for notebook computers, USB hubs, docking stations, and industrial handheld terminals requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.
Supply support for MAX1792EUA15 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 MAX1792 series was developed specifically for portable battery-operated equipment requiring high-current, low-dropout regulation with integrated supervision - targeting PDAs, cellular handsets, and compact computing platforms.
FAQ
What is the maximum input voltage for MAX1792EUA15?
The MAX1792EUA15 supports an absolute maximum input voltage of +6V applied to IN or SHDN pins, but its functional operating range is strictly +2.5V to +5.5V per datasheet specifications. Exceeding +5.5V may cause undefined behavior or damage, even if within absolute maximum ratings. For reliable operation, maintain VIN ≤ +5.5V in all conditions.
Does MAX1792EUA15 require external capacitors, and what values are recommended?
Yes, MAX1792EUA15 requires a 1µF ceramic capacitor between IN and GND, and a 3.3µF low-ESR (≤0.1Ω) ceramic capacitor between OUT and GND. These values ensure stability across -40°C to +85°C and up to 500mA load. For 1.5V output, the 3.3µF value is sufficient; larger capacitors improve PSRR and transient response but are not mandatory.
Can MAX1792EUA15 be used in adjustable-output mode?
No - MAX1792EUA15 is factory-trimmed for fixed 1.5V output and must have the SET pin connected to GND. While the MAX1792 family supports adjustable mode via external resistors, the EUA15 suffix denotes the preset 1.5V variant; using SET for adjustment would result in incorrect or unstable regulation.
How does the RST pin function on MAX1792EUA15?
The RST pin on MAX1792EUA15 is an open-drain, active-low output that goes low when VOUT drops below 93% of 1.5V (i.e., 1.395V) and remains low for ≥4ms after VOUT recovers. It requires a 100kΩ pullup resistor to VOUT to generate a valid logic-high signal for microcontroller reset assertion.
What thermal considerations apply to MAX1792EUA15 in continuous 500mA operation?
At 500mA and 1.5V output with +5.5V input, MAX1792EUA15 dissipates 2.0W - exceeding its 1.3W rated power limit. Continuous 500mA operation requires VIN ≤ VOUT + 2.6V (i.e., ≤4.1V) and mandatory use of the exposed pad soldered to a ≥1cm² ground plane to maintain TJ ≤ +150°C.
MAX1792EUA15 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:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.25V (1.5V)
- 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
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX-EP|8-uSOP-EP
MAX1792EUA15 FAQ
1.How can I place an order for MAX1792EUA15 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1792EUA15 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 MAX1792EUA15 reliable?
The price and inventory of MAX1792EUA15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1792EUA15 is usually 5 days.
3.What payment methods are accepted for MAX1792EUA15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1792EUA15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1792EUA15?
MAX1792EUA15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1792EUA15 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 MAX1792EUA15?
For technical support, including MAX1792EUA15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1792EUA15 requirements.
6.How does Aetrix verify that MAX1792EUA15 is sourced from the original manufacturer or authorized distributors?
All MAX1792EUA15 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 MAX1792EUA15 meets industry standards.
7.What is the process for return or replacement of MAX1792EUA15?
All MAX1792EUA15 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1792EUA15, 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 MAX1792EUA15 part is unused and in its original packaging.
Return procedure for MAX1792EUA15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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