My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1793EUE25+T
- Part No.:
- MAX1793EUE25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX1793EUE25+T.pdf
- Description:
- IC REG LIN POS ADJ 1A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,242
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1793EUE25+T from Maxim Integrated is a low-dropout linear regulator (LDO) with fixed 2.5V output, delivering guaranteed 1A load current at 210mV dropout (IOUT = 1A), ±1% output voltage accuracy over temperature and load, and ultra-low 125µA ground current. It integrates a reset output with 4ms delay and operates from +2.5V to +5.5V input - ideal for powering core logic rails in portable instrumentation and handheld computing.
For engineers reviewing the MAX1793EUE25+T datasheet, MAX1793EUE25+T pinout, MAX1793EUE25+T application, or MAX1793EUE25+T equivalent, key selection criteria include dropout performance at full load, reset threshold tolerance (90–96% VOUT nominal), thermal shutdown behavior (+170°C trip), and compatibility with low-ESR ceramic output capacitors (≤0.5Ω).
Technical Context
The MAX1793EUE25+T uses an internal p-channel MOSFET pass transistor enabling low quiescent current (125µA at light load) and stable operation without base-drive losses. Its Dual Mode™ architecture selects between factory-trimmed 2.5V output (SET = GND) or adjustable mode (1.25V–5.0V) via external resistor divider.
It features integrated protection: short-circuit current limiting (1.1–3.3A), thermal overload shutdown (+170°C with ~20°C hysteresis), and open-drain RST output asserting low when VOUT falls below 90–96% of nominal and holding for ≥4ms after recovery. The TSSOP-EP package includes an exposed thermal pad and GND pin for enhanced heat dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% (TA = –40°C to +85°C, IOUT = 1mA–1A) |
| Dropout Voltage | 210mV typical / 350mV max at 1A load - enables operation down to VIN = 2.71V |
| Ground Current | 125µA typical at IOUT = 100µA - extends battery life in standby |
| Shutdown Current | 0.1µA typical - supports deep-sleep power states |
| Output Noise | 115µVRMS (10Hz–1MHz) - suitable for noise-sensitive analog/RF subsystems |
| Reset Threshold | 90–96% of nominal VOUT with 1.5–8.0ms release delay - ensures reliable POR sequencing |
| Thermal Shutdown | +170°C trip with ~20°C hysteresis - prevents permanent damage during sustained overload |
Pinout & Package
The MAX1793EUE25+T is housed in a 16-pin thermally enhanced TSSOP package (U16E-3 outline) with exposed pad (EP) soldered to PCB ground plane for optimal thermal performance. Package dimensions: 5.0mm × 4.4mm × 1.1mm height; 30% smaller than SOT223.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | N.C. | No internal connection - must remain unconnected |
| 2–5 | IN | Main input supply (2.5V–5.5V); all four pins internally tied and require external parallel routing |
| 6 | RST | Open-drain reset output; low when VOUT < 90–96% nominal; requires external 100kΩ pull-up to OUT or logic rail |
| 7 | SHDN | Active-low enable; logic low disables regulator and pulls OUT low via 5kΩ internal resistor |
| 10 | GND | Power and signal ground; also functions as heatsink - must connect to large copper area or ground plane |
| 11 | SET | Voltage-setting input; grounded for 2.5V preset mode; connected to resistor divider for adjustable mode |
| 12–15 | OUT | Regulated output; all four pins internally tied and must be externally shorted at PCB |
| EP | Exposed Pad | Thermal and electrical ground; mandatory connection to PCB ground plane for thermal integrity and EMI control |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ Output Selection | Factory-trimmed 2.5V or user-adjustable 1.25V–5.0V via SET pin - eliminates need for separate fixed/adjustable part numbers |
| Low Dropout at Full Load | 210mV at 1A - maximizes usable battery voltage range in single-cell Li-ion or multi-cell alkaline systems |
| Ultra-Low Quiescent Current | 125µA ground current at light load - reduces no-load power loss by >5× vs. legacy LDOs |
| Integrated Power-On Reset | 4ms-delay RST output with 90–96% VOUT threshold - provides deterministic microcontroller boot timing without external circuitry |
| Robust Protection Suite | Short-circuit current limit (1.1–3.3A), thermal shutdown (+170°C), and undervoltage lockout (2.0–2.3V) - enables fault-tolerant operation in unregulated supplies |
| Thermally Optimized Package | TSSOP-EP with exposed pad and GND pin - achieves 1.5W continuous dissipation at +70°C ambient without heatsink |
Applications
| Handheld Test Instruments | Portable Medical Monitors |
|---|---|
Use Scenario: Powering precision ADC reference and analog front-end in battery-operated multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Primary 2.5V LDO supplying low-noise analog rail; RST synchronizes MCU startup with stable VOUT. Use Value: 115µVRMS output noise and ±1% accuracy ensure <1 LSB error in 12-bit ADC conversions across temperature. |
Use Scenario: Regulating sensor interface and display backlight drivers in wearable vital-sign monitors. IC Role / Device Role / Timing Role: Core 2.5V supply for low-power microcontroller and analog signal chain; SHDN enables sleep-mode current reduction. Use Value: 0.1µA shutdown current extends battery runtime to >72 hours in intermittent-sampling modes. |
| Industrial Handheld Terminals | Wireless Sensor Node Controllers |
Use Scenario: Providing regulated 2.5V for RFID reader ICs and secure element ICs in ruggedized field terminals. IC Role / Device Role / Timing Role: Main system LDO with RST driving hardware reset line of secure MCU; IN pins handle high-impedance battery inputs. Use Value: 210mV dropout allows operation until battery voltage drops to 2.71V - extending usable capacity of 3.0V nominal Li-SOCl₂ cells. |
Use Scenario: Supplying 2.5V to ultra-low-power sub-GHz transceivers and environmental sensors in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Always-on LDO with programmable SHDN control; thermal protection prevents failure during RF transmit bursts. Use Value: Thermal shutdown at +170°C with 20°C hysteresis ensures safe operation during 100ms TX duty cycles without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | 20V input range, 1A, 20µVRMS noise, but higher 300mV dropout at 1A and 1mA quiescent current | Better for wide-input industrial rails; unsuitable for low-VIN battery systems due to higher dropout and IQ | Select only if input exceeds 5.5V or sub-20µV noise is required - not drop-in for MAX1793EUE25+T's 2.5–5.5V battery domain |
| MCP1826T-2502E/DB | 2.5V fixed, 1A, 350mV dropout at 1A, 120µA ground current, no RST output | Lacks reset functionality and has higher dropout - requires external POR circuitry | Consider only when reset is handled elsewhere and board space permits larger dropout margin; no thermal pad or EP |
Compared with TPS7A4700RGWR and MCP1826T-2502E/DB, the MAX1793EUE25+T uniquely combines low dropout (210mV), ultra-low IQ (125µA), integrated RST, and thermally optimized TSSOP-EP - making it the only option that meets all three requirements simultaneously for compact, battery-powered 2.5V systems.
Availability
MAX1793EUE25+T is available at Aetrix Electronics and suitable for handheld test instruments, portable medical monitors, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1793EUE25+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 demanding industrial, medical, and communications applications.
The MAX1793 belongs to Maxim's low-dropout, low-IQ linear regulator product line, engineered specifically for extended battery life and reliable power sequencing in portable and space-constrained electronic systems.
FAQ
What is the guaranteed maximum dropout voltage for MAX1793EUE25+T at 1A load?
The guaranteed maximum dropout voltage for MAX1793EUE25+T at 1A load is 350mV, measured as VIN – VOUT when VOUT drops 100mV below its nominal value under specified conditions (VIN ≥ VOUT + 0.5V). This specification applies across the full operating temperature range (–40°C to +85°C) and ensures reliable regulation even as input voltage declines near end-of-battery-life.
Does MAX1793EUE25+T require external components for basic operation?
Yes - MAX1793EUE25+T requires a 4.7µF input capacitor (CIN) between IN and GND, and a 6.8µF low-ESR (≤0.5Ω) output capacitor (COUT) between OUT and GND. These are mandatory for stability, transient response, and noise suppression. The RST pin also requires a 100kΩ pull-up resistor to OUT or another logic rail to generate a valid reset signal.
Can MAX1793EUE25+T be used in adjustable-output configurations?
No - MAX1793EUE25+T is factory-trimmed for fixed 2.5V output and is not configurable for adjustable operation. While the underlying MAX1793 family supports adjustable mode via the SET pin, the EUE25+T variant is permanently configured for 2.5V; connecting SET to a resistor divider will not alter the output voltage and may impair regulation accuracy.
What thermal management is required for MAX1793EUE25+T at full 1A load?
At 1A load with VIN = 5.5V and VOUT = 2.5V, MAX1793EUE25+T dissipates up to 3W (P = IOUT × (VIN – VOUT)). To maintain junction temperature ≤+150°C, the exposed pad (EP) and GND pin must be soldered to a minimum 1in² copper area or multi-via ground plane. Without this, thermal shutdown will activate at ambient temperatures above +40°C.
Is the RST output of MAX1793EUE25+T compatible with 3.3V logic systems?
Yes - the RST output is open-drain and rated for operation up to +5.5V. When pulled up to a 3.3V rail (e.g., via 100kΩ resistor), it delivers a clean 0V/3.3V logic-level reset signal compatible with standard CMOS inputs. The RST low-voltage specification is 0.1V max at 1mA sink current, ensuring solid logic-low assertion across temperature and process variation.
MAX1793EUE25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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 (2.5V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.45V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 200 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:
- 16-TSSOP-EP
MAX1793EUE25+T FAQ
1.How can I place an order for MAX1793EUE25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1793EUE25+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 MAX1793EUE25+T reliable?
The price and inventory of MAX1793EUE25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1793EUE25+T is usually 5 days.
3.What payment methods are accepted for MAX1793EUE25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1793EUE25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1793EUE25+T?
MAX1793EUE25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1793EUE25+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 MAX1793EUE25+T?
For technical support, including MAX1793EUE25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1793EUE25+T requirements.
6.How does Aetrix verify that MAX1793EUE25+T is sourced from the original manufacturer or authorized distributors?
All MAX1793EUE25+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 MAX1793EUE25+T meets industry standards.
7.What is the process for return or replacement of MAX1793EUE25+T?
All MAX1793EUE25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1793EUE25+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 MAX1793EUE25+T part is unused and in its original packaging.
Return procedure for MAX1793EUE25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1793EUE25+T Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
