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Analog Devices Inc./Maxim Integrated MAX1792EUA33-TG069
- Part No.:
- MAX1792EUA33-TG069
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX1792EUA33-TG069.pdf
- Description:
- 500MA, LOW-DROPOUT LINEAR REGULA
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX1792EUA33-TG069 from Maxim Integrated is a 3.3V fixed-output, 500mA low-dropout linear regulator featuring an internal PMOS pass transistor, ±1% output voltage accuracy over temperature and load, 130mV dropout at full load, and integrated active-low open-drain reset with 4ms timeout - designed for power rail regulation in portable battery-powered systems such as notebook computers and USB hubs.
For engineers reviewing the MAX1792EUA33-TG069 datasheet, MAX1792EUA33-TG069 pinout, MAX1792EUA33-TG069 application, or MAX1792EUA33-TG069 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 operation across -40°C to +85°C.
Technical Context
The MAX1792EUA33-TG069 employs a P-channel MOSFET pass device with 0.25Ω RDS(ON), enabling low quiescent current (80µA typical) independent of load and eliminating base-drive losses inherent in PNP-based regulators. Its Dual Mode™ architecture selects between factory-trimmed 3.3V output (via SET = GND) and adjustable mode (via external resistor divider), with VSET threshold at 1.25V ±1.5%.
Regulation relies on a precision 1.25V reference and error amplifier comparing feedback against VSET; reset logic monitors VOUT against 93% of nominal (3.069V) with 1.5–8ms release delay. Thermal shutdown activates at +170°C with 20°C hysteresis, and short-circuit current limit is 0.55–1.8A depending on output voltage condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% over -40°C to +85°C, 100mA–500mA load, ensuring stable core logic supply without external resistors. |
| Dropout Voltage | 130mV at 500mA load, enabling operation down to VIN = 3.43V - critical for extending battery life in single-cell Li-ion or 3-cell NiMH systems. |
| Ground Current | 80µA typical at 1mA load, rising to 130µA at 500mA - remains stable in dropout, minimizing wasted battery energy. |
| Shutdown Current | 0.1µA maximum at VIN = 5.5V, allowing ultra-low-power sleep states in portable devices without auxiliary switches. |
| Reset Threshold | 93% of nominal VOUT (3.069V), with 4ms timeout after regulation recovery - provides reliable power-on-reset signaling to microcontrollers. |
| Thermal Protection | Activates at +170°C junction temperature with 20°C hysteresis, enabling safe pulsed operation during sustained overload without latch-off. |
| Package Power Dissipation | 1.3W continuous at +70°C ambient, derated 17mW/°C above - requires exposed pad soldered to PCB ground plane for thermal compliance. |
Pinout & Package
MAX1792EUA33-TG069 is housed in an 8-pin Power-µMAX package (U8E+2 outline) with an exposed thermal pad (EP) on the underside, requiring soldering to PCB ground plane for thermal management and electrical grounding. The package measures 3.0mm × 3.0mm × 0.8mm and supports reflow soldering up to +260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IN | Input supply connection | Dual pins reduce trace resistance and inductance; bypass with 1µF ceramic capacitor to GND near pin for stability and noise suppression. |
| 3 RST | Open-drain active-low reset output | Pulls low when VOUT < 3.069V; requires external 100kΩ pullup to OUT for logic-level POR signal to µC. |
| 4 SHDN | Active-low shutdown control | Drives regulator into 0.1µA state; internally pulls OUT low via 5kΩ resistor and forces RST low during shutdown. |
| 5 GND | Power and signal ground | Serves as primary heat path; must be connected to large copper area or ground plane alongside EP for thermal performance. |
| 6 SET | Voltage-setting input | Internally grounded for 3.3V fixed mode; connects to external resistor divider for adjustable outputs (1.25V–5.0V). |
| 7, 8 OUT | Regulated output | Dual pins support 500mA RMS delivery; bypass with 3.3µF low-ESR (≤0.1Ω) ceramic capacitor to GND for transient response. |
| EP | Exposed thermal pad | Not electrically connected internally; must be soldered to PCB ground plane to achieve θJA ≤ 65°C/W and sustain 1.3W dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Preset 3.3V output | Factory-trimmed ±1% accuracy eliminates external feedback components and calibration effort for standard I/O rail applications. |
| Low 130mV dropout | Enables >95% efficiency at 500mA with VIN as low as 3.43V, extending usable battery voltage range in portable equipment. |
| 0.1µA shutdown current | Reduces standby power loss to negligible levels, supporting multi-week battery shelf life in always-on IoT edge nodes. |
| Integrated reset with 4ms timeout | Provides deterministic power-on-reset timing without external RC networks, simplifying BOM and layout for microcontroller interfaces. |
| Thermal shutdown with hysteresis | Prevents destructive overheating during sustained overload while allowing automatic recovery once junction cools by 20°C. |
| 8-pin Power-µMAX package | 3.0mm × 3.0mm footprint with exposed pad delivers 1.3W dissipation in minimal board area - ideal for space-constrained handhelds. |
Applications
| Notebook Computers | USB Hubs |
|---|---|
|
Use Scenario: Regulating 3.3V I/O supply for USB controller, PCIe switch, and embedded flash memory in thin-and-light notebooks. IC Role / Device Role / Timing Role: Primary LDO delivering clean, regulated 3.3V at up to 500mA with fast load-transient response (<18mV overshoot) to handle burst data transfers. Use Value: 130mV dropout allows operation from partially discharged 3.7V Li-ion cells; 0.1µA shutdown enables instant-on resume from S3/S4 sleep states. |
Use Scenario: Providing stable 3.3V power to USB 2.0 transceivers and hub logic in bus-powered desktop or portable hubs. IC Role / Device Role / Timing Role: Fixed-output LDO with integrated reset used as POR source for hub controller firmware initialization sequence. Use Value: ±1% output accuracy ensures USB PHY compliance; 4ms RST timeout meets USB specification tPOR requirements without external timing components. |
| Cellular Telephones | Docking Stations |
|
Use Scenario: Supplying 3.3V to RF front-end ICs, audio codecs, and display interface circuitry in 4G/LTE smartphones. IC Role / Device Role / Timing Role: Low-noise (115µVRMS) LDO placed close to noise-sensitive analog blocks to suppress switching noise from PMIC buck converters. Use Value: 80µA ground current minimizes battery drain during voice calls; thermal shutdown protects against enclosure overheating during extended video streaming. |
Use Scenario: Generating 3.3V auxiliary rail for PCIe lane buffers, SATA controllers, and hot-swap detection logic in laptop docking stations. IC Role / Device Role / Timing Role: High-current LDO with dual IN/OUT pins handling peak loads up to 500mA during peripheral enumeration and data transfer bursts. Use Value: Dual-pin configuration reduces IR drop and improves current sharing; exposed pad enables conduction cooling through metal chassis mounting. |
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 |
|---|---|---|---|
| Texas Instruments TPS76333DBVR | 300mA output, 250mV dropout at 300mA, 1.2µA quiescent current, SOT-23-5 package. | Limited to lower current loads; lacks reset output and thermal hysteresis. | Select when board space is constrained and 300mA suffices; requires external reset circuitry if POR needed. |
| Analog Devices ADP1713AUJZ-3.3-R7 | 500mA output, 170mV dropout at 500mA, 35µA quiescent current, TSOT-5 package. | No integrated reset; smaller package but lower power dissipation (0.5W max). | Choose for ultra-low IQ designs where reset functionality is handled elsewhere; not suitable for high-ambient thermal environments. |
Compared with MAX1792EUA33-TG069, the TPS76333DBVR offers smaller footprint but sacrifices 200mA current capacity and reset integration, while the ADP1713AUJZ-3.3-R7 matches current rating but omits reset and thermal hysteresis - making MAX1792EUA33-TG069 uniquely suited for thermally demanding, self-contained POR applications in portable systems.
Availability
MAX1792EUA33-TG069 is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and USB hubs requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for MAX1792EUA33-TG069 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 high-performance 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 needing high-current, low-dropout regulation with integrated system supervision features like reset and thermal protection.
FAQ
What is the guaranteed output voltage tolerance for MAX1792EUA33-TG069 across temperature and load?
The MAX1792EUA33-TG069 guarantees ±1% output voltage accuracy over -40°C to +85°C ambient temperature and 1mA to 500mA load current, with VIN ≥ VOUT + 0.5V. This is achieved via factory trimming of internal feedback resistors and a precision 1.25V reference, ensuring consistent 3.3V regulation without external calibration.
Does MAX1792EUA33-TG069 require external capacitors, and what are the recommended values?
Yes, MAX1792EUA33-TG069 requires a 1µF ceramic capacitor between IN and GND, and a 3.3µF low-ESR (≤0.1Ω) ceramic capacitor between OUT and GND. For output voltages below 2V, a 4.7µF output capacitor is recommended. These values ensure stability, low noise (115µVRMS), and optimal transient response per the datasheet's operating characteristics.
How does the reset function of MAX1792EUA33-TG069 operate, and what external components are needed?
The MAX1792EUA33-TG069's RST pin is an open-drain output that goes low when VOUT falls below 93% of nominal (3.069V) and remains low for ≥4ms after VOUT recovers. To generate a logic-high signal, connect a 100kΩ pullup resistor from RST to OUT. No other external components are required - the timeout and threshold are fully internal.
Can MAX1792EUA33-TG069 be used in adjustable-output configurations, and how is that enabled?
Yes, MAX1792EUA33-TG069 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. With VSET = 1.25V, R2 is selected between 25kΩ and 100kΩ, and R1 is calculated as R1 = R2 × ((VOUT / 1.25) − 1). The fixed 3.3V preset mode is active only when SET is tied to GND.
What thermal management practices are required for MAX1792EUA33-TG069 to sustain 500mA output continuously?
To sustain 500mA continuously, MAX1792EUA33-TG069 requires its exposed thermal pad (EP) and GND pin to be soldered to a large PCB ground plane using multiple thermal vias. Without this, junction temperature may exceed +150°C. The package is rated for 1.3W dissipation at +70°C ambient, derating 17mW/°C above that - proper thermal design prevents activation of the +170°C thermal shutdown.
MAX1792EUA33-TG069 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 (3.3V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.25V @ 500mA
- 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
MAX1792EUA33-TG069 FAQ
1.How can I place an order for MAX1792EUA33-TG069 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1792EUA33-TG069 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 MAX1792EUA33-TG069 reliable?
The price and inventory of MAX1792EUA33-TG069 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1792EUA33-TG069 is usually 5 days.
3.What payment methods are accepted for MAX1792EUA33-TG069?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1792EUA33-TG069 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1792EUA33-TG069?
MAX1792EUA33-TG069 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1792EUA33-TG069 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 MAX1792EUA33-TG069?
For technical support, including MAX1792EUA33-TG069 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1792EUA33-TG069 requirements.
6.How does Aetrix verify that MAX1792EUA33-TG069 is sourced from the original manufacturer or authorized distributors?
All MAX1792EUA33-TG069 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 MAX1792EUA33-TG069 meets industry standards.
7.What is the process for return or replacement of MAX1792EUA33-TG069?
All MAX1792EUA33-TG069 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1792EUA33-TG069, 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 MAX1792EUA33-TG069 part is unused and in its original packaging.
Return procedure for MAX1792EUA33-TG069:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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