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Analog Devices Inc./Maxim Integrated MAX1792EUA15-T
- Part No.:
- MAX1792EUA15-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX1792EUA15-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
MAX1792EUA15-T from Maxim Integrated is a 500mA low-dropout linear regulator with preset 1.5V output, ±1% accuracy over temperature, 130mV dropout at full load, and integrated active-low open-drain reset with 4ms timeout. It employs an internal PMOS pass transistor and operates from +2.5V to +5.5V input, targeting power rail regulation in space-constrained portable systems.
For engineers reviewing the MAX1792EUA15-T datasheet, MAX1792EUA15-T pinout, MAX1792EUA15-T application, or MAX1792EUA15-T equivalent, key selection criteria include guaranteed 500mA output under 130mV dropout, 80µA ground current independent of load, 0.1µA shutdown current, thermal and short-circuit protection, and compatibility with 1.5V logic rails in battery-powered PDA and notebook subsystems.
Technical Context
The MAX1792EUA15-T uses a P-channel MOSFET pass element (RDS(ON) ≈ 0.25Ω) enabling low dropout and load-independent quiescent current. Its Dual Mode™ architecture selects between factory-trimmed 1.5V output (SET = GND) or adjustable mode via external resistor divider (SET biased at 1.25V).
Regulation relies on a 1.25V internal reference, error amplifier, and feedback path switching controlled by VSET threshold (50–150mV). The RST output asserts low when VOUT falls below 90–96% of nominal and releases after 1.5–8ms once regulation is restored.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 1.5V ±1% (at IOUT = 100mA, TA = 0°C to +85°C); supports adjustable mode from 1.25V to 5.0V via SET pin |
| Max Output Current | 500mA RMS guaranteed; current limit rises to 1.6A when VOUT > 96% of nominal for transient support |
| Dropout Voltage | 130mV at 500mA load (typical); defined as VIN – VOUT when VOUT is 100mV below value measured at VIN = VOUT(NOM) + 0.5V |
| Ground Current | 80µA typical at IOUT = 1mA; remains stable up to 500mA load - critical for battery runtime in always-on subsystems |
| Shutdown Current | 0.1µA maximum at VIN = 5.5V - enables ultra-low-power sleep states in portable devices |
| Reset Threshold | 90–96% of nominal VOUT; 4ms release delay ensures clean microcontroller power-on reset sequencing |
| Thermal Protection | Shuts down at TJ = +170°C with 20°C hysteresis; allows pulsed operation during overload without damage |
Pinout & Package
The MAX1792EUA15-T is housed in an 8-pin Power-µMAX package (U8E+2 outline) with exposed thermal pad (EP) on underside for enhanced heat dissipation. GND and EP must be soldered to PCB ground plane for thermal compliance and full 1.3W power handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - IN | Input supply connection | Dual pins for lower impedance; requires 1µF bypass to GND; accepts +2.5V to +5.5V input |
| 3 - RST | Open-drain active-low reset output | Pulls low when VOUT < 96% nominal; needs external pullup (e.g., 100kΩ to OUT) for logic-level signal |
| 4 - SHDN | Active-low shutdown control | Drives device into 0.1µA state; OUT discharged via internal 5kΩ resistor; tolerates up to +6V |
| 5 - GND | Power and signal ground | Also serves as primary thermal path; must connect to large copper area or ground plane |
| 6 - SET | Voltage-setting input | Grounded for 1.5V preset mode; connected to resistive divider for adjustable output (VSET = 1.25V) |
| 7, 8 - OUT | Regulated output | Dual pins for higher current capability; requires 3.3µF low-ESR capacitor (≤0.1Ω) to GND |
| EP - Exposed Pad | Thermal interface | Not electrically connected; must be soldered to PCB ground plane to achieve θJA spec and 1.3W rating |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Transistor | Eliminates base-drive current loss; enables 80µA ground current independent of load and stable performance in dropout |
| Dual Mode™ Output Selection | Hardware-selectable preset (1.5V) or adjustable (1.25V–5.0V) via single SET pin - reduces BOM count across voltage variants |
| Integrated Reset with Timeout | Guaranteed 4ms RST assertion delay after VOUT recovery - meets microcontroller POR timing requirements without external RC |
| Thermal & Short-Circuit Protection | Auto-recovering shutdown at +170°C junction; indefinite short-circuit tolerance - eliminates need for external foldback circuitry |
| Ultra-Low Shutdown Current | 0.1µA max - extends battery life in standby modes for PDAs, cordless phones, and USB peripherals |
Applications
| Portable Computing Power Rails | Cellular Baseband Core Supply |
|---|---|
|
Use Scenario: Providing clean 1.5V core voltage to ARM-based application processors in ultraportable notebooks and tablets. IC Role / Device Role / Timing Role: Primary LDO regulator delivering stable 500mA with minimal dropout to sustain operation as Li-ion battery discharges from 4.2V to 3.0V. Use Value: 130mV dropout enables >20% longer runtime vs. legacy 200mV-dropout regulators at end-of-battery life. |
Use Scenario: Powering RF transceiver ICs and digital baseband ASICs in 3G/4G cellular handsets requiring tight voltage tolerance. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO supplying 1.5V core rail with simultaneous reset signaling to baseband controller during brownout. Use Value: ±1% output accuracy and 115µVRMS noise ensure reliable digital logic operation and reduced bit-error rates. |
| USB Hub Port Power Management | PDA System-on-Chip (SoC) I/O Supply |
|
Use Scenario: Regulating 1.5V I/O voltage for USB 2.0 hub controllers and downstream port switches in docking stations. IC Role / Device Role / Timing Role: Load-switch-capable LDO with SHDN control enabling per-port power gating and hot-plug detection via RST monitoring. Use Value: 0.1µA shutdown current and fast RST response (<8ms) allow USB compliance with suspend/resume timing budgets. |
Use Scenario: Supplying 1.5V I/O domain to legacy PDA SoCs with multiple peripheral interfaces (MMC, SPI, UART). IC Role / Device Role / Timing Role: Compact, thermally robust LDO supporting burst-mode loads (e.g., touchscreen controller wake-up) without thermal throttling. Use Value: Dual OUT pins and exposed thermal pad enable continuous 500mA delivery in 3mm × 3mm footprint - critical for palmtop form factor. |
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 |
|---|---|---|---|
| TPS76315QDBVRQ1 | 150mV dropout at 150mA; 500mA not guaranteed; automotive-grade (-40°C to +125°C) | Lower current capability limits use to sub-200mA I/O rails; wider temp range suits automotive infotainment | Select when AEC-Q100 qualification is mandatory and load current ≤150mA |
| MCP1702T-1502E/MB | 250mV dropout at 250mA; 1.5V fixed only; no RST output; SOT-23-5 package | Lacks reset functionality and thermal protection; smaller package but lower power dissipation (0.5W) | Select for cost-sensitive, low-current applications where reset signaling is handled externally |
Compared with TPS76315QDBVRQ1 and MCP1702T-1502E/MB, the MAX1792EUA15-T uniquely delivers guaranteed 500mA at 130mV dropout with integrated reset and thermal protection in a thermally optimized µMAX package - making it optimal for high-density portable systems demanding full-feature integration.
Availability
MAX1792EUA15-T is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, personal digital assistants (PDAs), USB hubs, and docking stations requiring stable component supply with long-term manufacturability and RoHS-compliant packaging.
Supply support for MAX1792EUA15-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 industrial, communications, computing, and consumer applications.
The MAX1792 series was developed specifically for battery-powered portable electronics requiring high-current, low-dropout regulation with integrated system supervision features like reset and shutdown - addressing compactness, efficiency, and reliability in handheld platforms.
FAQ
What is the guaranteed output voltage accuracy of the MAX1792EUA15-T over temperature?
The MAX1792EUA15-T guarantees ±1% output voltage accuracy at IOUT = 100mA and TA = 0°C to +85°C. Over the full operating range (IOUT = 1mA to 500mA, TA = -40°C to +85°C), accuracy degrades to ±3%. This tight tolerance ensures reliable logic-level compatibility for 1.5V-core digital ICs without external trimming.
Can the MAX1792EUA15-T be used in adjustable-output configuration?
Yes, the MAX1792EUA15-T supports adjustable mode via its SET pin. By connecting a resistive divider between OUT and GND with SET tied to the midpoint, the output can be set from 1.25V to 5.0V using R1 = R2[(VOUT/1.25V) – 1]. The 1.5V preset is only active when SET is grounded - no hardware change is needed to repurpose the same MAX1792EUA15-T in adjustable designs.
How does the RST output behave during shutdown of the MAX1792EUA15-T?
During shutdown (SHDN = GND), the RST output of the MAX1792EUA15-T is actively held low regardless of VOUT level. This differs from normal operation, where RST asserts low only when VOUT drops below 90–96% of nominal and releases after 4ms. The forced low state provides unambiguous power-fail signaling to host controllers during intentional system sleep.
What thermal design considerations apply to the MAX1792EUA15-T's exposed pad (EP)?
The MAX1792EUA15-T's exposed pad (EP) is not electrically connected but serves as the primary thermal conduction path. To achieve the rated 1.3W power dissipation and prevent thermal shutdown, EP and pin 5 (GND) must be soldered to a large PCB ground plane using multiple thermal vias. Failure to do so raises junction temperature and triggers thermal limiting at significantly lower load currents.
Is the MAX1792EUA15-T compatible with ceramic output capacitors?
Yes, the MAX1792EUA15-T is fully compatible with ceramic output capacitors, provided they meet the ESR requirement of ≤0.1Ω. A 3.3µF X5R/X7R ceramic capacitor is recommended for 1.5V output; for outputs below 2V, a 4.7µF unit is specified. Ceramic caps improve transient response and reduce board area versus tantalum alternatives - critical for space-constrained portable layouts.
MAX1792EUA15-T 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 (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-T FAQ
1.How can I place an order for MAX1792EUA15-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1792EUA15-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 MAX1792EUA15-T reliable?
The price and inventory of MAX1792EUA15-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1792EUA15-T is usually 5 days.
3.What payment methods are accepted for MAX1792EUA15-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1792EUA15-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1792EUA15-T?
MAX1792EUA15-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1792EUA15-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 MAX1792EUA15-T?
For technical support, including MAX1792EUA15-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1792EUA15-T requirements.
6.How does Aetrix verify that MAX1792EUA15-T is sourced from the original manufacturer or authorized distributors?
All MAX1792EUA15-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 MAX1792EUA15-T meets industry standards.
7.What is the process for return or replacement of MAX1792EUA15-T?
All MAX1792EUA15-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1792EUA15-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 MAX1792EUA15-T part is unused and in its original packaging.
Return procedure for MAX1792EUA15-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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