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Analog Devices Inc./Maxim Integrated MAX1792EUA18/V+
- Part No.:
- MAX1792EUA18/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX1792EUA18/V+.pdf
- Description:
- IC REG LIN POS ADJ 500MA 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,934
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Product details
Overview
MAX1792EUA18/V+ from Maxim Integrated is a 500mA, low-dropout linear regulator with preset 1.8V 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. It serves as a primary power supply for core logic rails in portable battery-powered systems such as cellular phones and PDAs.
For engineers reviewing the MAX1792EUA18/V+ datasheet, MAX1792EUA18/V+ pinout, MAX1792EUA18/V+ application, or MAX1792EUA18/V+ equivalent, key selection criteria include guaranteed 500mA output under 130mV dropout, 0.1µA shutdown current, thermal overload protection, and compatibility with low-ESR ceramic output capacitors (3.3µF) for stable regulation in space-constrained µMAX-EP layouts.
Technical Context
The MAX1792EUA18/V+ uses an internal PMOS pass transistor with 0.25Ω RDS(ON), enabling low ground current (80µA typical at light load, 110µA at 500mA) independent of output load. Its Dual Mode™ architecture selects between factory-trimmed 1.8V output (SET tied to GND) or adjustable mode (via external resistor divider), with VSET threshold fixed at 1.25V ±1.5%.
It integrates multiple protection functions: short-circuit current limit (0.55–1.8A), thermal shutdown at +170°C with 20°C hysteresis, undervoltage lockout (2.0–2.3V), and reset assertion when VOUT falls below 90–96% of nominal - all implemented without external components beyond RRST pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 1.8V ±1% (at 100mA, -40°C to +85°C); supports adjustable mode from 1.25V to 5.0V via SET pin |
| Max Output Current | 500mA RMS continuous; short-circuit tolerant indefinitely with internal current limiting |
| Dropout Voltage | 130mV at 500mA (typical); enables operation down to VIN = 1.93V for 1.8V output |
| Ground Current | 80µA typical at light load; rises to 110µA at 500mA - remains stable in dropout |
| Shutdown Current | 0.1µA maximum (tested at VIN = 5.5V); reduces system standby power significantly |
| Reset Threshold | 90–96% of nominal VOUT; 4ms release delay ensures clean microcontroller POR signaling |
| Thermal Protection | Shuts down at +170°C junction; restarts after 20°C cooldown - prevents permanent damage during overload |
Pinout & Package
The MAX1792EUA18/V+ 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 optimal thermal performance (θJA reduced by >30%). Package dimensions: 3.0mm × 3.0mm × 0.8mm, 1.3W max power dissipation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - IN | Input supply connection | Dual pins for lower impedance path; requires 1µF ceramic bypass to GND near package |
| 3 - RST | Open-drain active-low reset output | Pulls low when VOUT < 96% nominal; needs external 100kΩ pull-up to OUT for logic-level signal |
| 4 - SHDN | Active-low shutdown control | Drives device into 0.1µA state; tolerates up to +6V regardless of VIN/VOUT |
| 5 - GND | Power and signal ground | Also functions as heatsink; must be connected to large copper area or ground plane |
| 6 - SET | Voltage-setting input | Tied to GND for 1.8V preset mode; accepts resistive divider for adjustable output (1.25–5.0V) |
| 7, 8 - OUT | Regulated output | Dual pins for higher current capability; requires 3.3µF low-ESR (<0.1Ω) ceramic capacitor to GND |
| EP - Exposed Pad | Thermal interface | Not electrically connected; must be soldered to PCB ground plane for thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout with PMOS pass element | Eliminates base-drive current loss; maintains 80µA quiescent current even in dropout |
| Dual Mode™ output selection | Hardware-selectable preset (1.8V) or adjustable mode via single SET pin - no mode strapping required |
| Integrated reset with programmable timing | 4ms release delay ensures reliable microcontroller initialization without external RC network |
| Thermal and short-circuit robustness | Self-protecting under fault: pulsed shutdown at +170°C; indefinite short-circuit survival |
| Automotive-grade qualification | /V+ suffix denotes AEC-Q100 stress-tested variant for extended temperature (-40°C to +85°C) and reliability |
Applications
| Cellular Phone Baseband Core Supply | USB Hub Port Power Management |
|---|---|
Use Scenario: Powers ARM-based baseband processor core rail requiring stable 1.8V at up to 450mA during burst transmission. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 1.8V with fast transient response (<18mV overshoot) and low noise (115µVRMS) to prevent digital logic errors. Use Value: 130mV dropout extends usable battery life by enabling operation until cell voltage drops to 1.93V; 0.1µA shutdown cuts leakage during sleep modes. |
Use Scenario: Supplies 1.8V to USB 2.0 transceiver PHY and hub controller logic in portable docking stations. IC Role / Device Role / Timing Role: Local point-of-load regulator with RST output used as POR signal to hub controller upon power-up. Use Value: ±1% output accuracy ensures USB eye diagram compliance; thermal shutdown prevents overheating during sustained 500mA port charging. |
| Industrial PDA Main Logic Rail | Automotive Infotainment Display Interface |
Use Scenario: Provides 1.8V to FPGA configuration memory and display driver IC in ruggedized handheld terminals. IC Role / Device Role / Timing Role: High-reliability LDO with automotive-qualified /V+ variant ensuring operation across -40°C to +85°C ambient. Use Value: Exposed thermal pad and GND pin dual-function design sustains 500mA continuously on 2-layer PCBs without forced air cooling. |
Use Scenario: Powers LVDS serializer/deserializer interface between head unit MCU and TFT display in automotive dashboards. IC Role / Device Role / Timing Role: Noise-sensitive analog supply rail where 115µVRMS output noise prevents pixel jitter or color banding. Use Value: PSRR >40dB at 1kHz suppresses switching noise from adjacent DC/DC converters; reset output synchronizes display initialization. |
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 |
|---|---|---|---|
| TPS76318QDBVRQ1 | 150mA max output; 220mV dropout at 150mA; fixed 1.8V only; no reset output | Suitable for ultra-low-power microcontrollers but insufficient for 500mA loads like baseband processors | Select MAX1792EUA18/V+ when ≥500mA output, reset signaling, or lower dropout is required |
| MCP1826T-1802E/DB | 500mA output; 350mV dropout at 500mA; ±2% accuracy; no thermal shutdown or reset | Lacks fault protection and precise POR timing - requires external circuitry for safety-critical systems | Choose MAX1792EUA18/V+ for automotive-grade reliability, integrated reset, and tighter ±1% tolerance |
Compared with TPS76318QDBVRQ1 and MCP1826T-1802E/DB, the MAX1792EUA18/V+ uniquely combines 500mA capability, 130mV dropout, ±1% accuracy, automotive qualification, and integrated reset - eliminating need for external supervision ICs in compact, high-reliability designs.
Availability
MAX1792EUA18/V+ is available at Aetrix Electronics and suitable for cellular phone baseband supplies, USB hub port power management, industrial PDA logic rails, and automotive infotainment display interfaces requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for MAX1792EUA18/V+ 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 product line delivers high-current, low-noise LDOs optimized for battery-powered portable equipment - emphasizing minimal dropout, ultra-low quiescent current, and integrated system supervision functions.
FAQ
What is the guaranteed output voltage accuracy of the MAX1792EUA18/V+ over temperature?
The MAX1792EUA18/V+ guarantees ±1% output voltage accuracy at 100mA load across the full -40°C to +85°C operating range. At wider load conditions (1mA to 500mA), accuracy degrades to ±3% over temperature - confirmed in the Electrical Characteristics table under "Output Voltage Accuracy (Preset Mode)" with conditions explicitly stated for the 1.8V variant.
Does the MAX1792EUA18/V+ require external components for basic operation?
Yes - the MAX1792EUA18/V+ requires two mandatory external capacitors: a 1µF ceramic capacitor between IN and GND, and a 3.3µF low-ESR (<0.1Ω) ceramic capacitor between OUT and GND. Additionally, a 100kΩ pull-up resistor from RST to OUT is needed to generate a valid logic-high reset signal; these values are specified in the Typical Operating Circuit and Applications Information sections.
How does the /V+ suffix affect the MAX1792EUA18/V+ specification?
The /V+ suffix on MAX1792EUA18/V+ indicates automotive qualification per AEC-Q100 stress testing, including extended temperature operation (-40°C to +85°C), enhanced reliability screening, and lead-free/RoHS-compliant packaging. All electrical specifications remain identical to the commercial-grade MAX1792EUA18+, but the /V+ variant is screened for automotive use cases requiring higher quality assurance.
Can the MAX1792EUA18/V+ be used in adjustable-output mode?
Yes - the MAX1792EUA18/V+ supports adjustable output from 1.25V to 5.0V by disconnecting SET from GND and connecting it to a resistive divider between OUT and GND. The internal 1.25V reference and Dual Mode™ comparator automatically switch to adjustable mode when VSET exceeds 50mV; this functionality is documented in the Detailed Description and Figure 2 of the datasheet.
What thermal management is required for continuous 500mA operation with the MAX1792EUA18/V+?
For continuous 500mA operation, the MAX1792EUA18/V+ requires soldering both the exposed thermal pad (EP) and GND pin to a large PCB ground plane using multiple thermal vias. Without this, junction temperature may exceed +150°C under worst-case VIN–VOUT differentials. The datasheet specifies 1.3W max power dissipation at +70°C ambient - achievable only with proper thermal pad implementation per land pattern 90-0145.
MAX1792EUA18/V+ 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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.25V (1.8V)
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX-EP|8-uSOP-EP
MAX1792EUA18/V+ FAQ
1.How can I place an order for MAX1792EUA18/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1792EUA18/V+ 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 MAX1792EUA18/V+ reliable?
The price and inventory of MAX1792EUA18/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1792EUA18/V+ is usually 5 days.
3.What payment methods are accepted for MAX1792EUA18/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1792EUA18/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1792EUA18/V+?
MAX1792EUA18/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1792EUA18/V+ 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 MAX1792EUA18/V+?
For technical support, including MAX1792EUA18/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1792EUA18/V+ requirements.
6.How does Aetrix verify that MAX1792EUA18/V+ is sourced from the original manufacturer or authorized distributors?
All MAX1792EUA18/V+ 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 MAX1792EUA18/V+ meets industry standards.
7.What is the process for return or replacement of MAX1792EUA18/V+?
All MAX1792EUA18/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1792EUA18/V+, 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 MAX1792EUA18/V+ part is unused and in its original packaging.
Return procedure for MAX1792EUA18/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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