My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8874REUK-T
- Part No.:
- MAX8874REUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8874REUK-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,469
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8874REUK-T from Maxim Integrated is a low-dropout linear regulator with fixed 2.80V output, delivering up to 120mA from a +2.5V to +6.5V input. It features 82µA operating supply current independent of load, 55mV dropout at 50mA, and auto-discharge functionality during shutdown - making it ideal for battery-powered portable devices requiring extended runtime and controlled output discharge.
For engineers reviewing the MAX8874REUK-T datasheet, MAX8874REUK-T pinout, MAX8874REUK-T application, or MAX8874REUK-T equivalent, this device is selected for compact, low-quiescent-current power management in space-constrained, single-cell Li-ion or alkaline systems where preset voltage accuracy (±3.5%), thermal protection, and reverse-battery safety are critical.
Technical Context
The MAX8874REUK-T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) enabling ultra-low quiescent current across all operating conditions - including dropout - unlike PNP-based regulators. Its dual-mode architecture selects between fixed 2.80V output (SET tied to GND) or adjustable mode (1.25V–6.5V) via external resistor divider.
Shutdown logic reduces supply current to 0.1nA, while the MAX8874-specific auto-discharge path actively pulls OUT to GND through a 300Ω internal switch. Thermal shutdown activates at +170°C with 20°C hysteresis, and current limiting protects against sustained short-circuit events with 280mA typical trip level.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.80V (±3.5% over -40°C to +85°C), optimized for low-power microcontroller I/O rails. |
| Max Output Current | 120mA continuous - sufficient for baseband processors, RF front-ends, or sensor subsystems in handheld devices. |
| Dropout Voltage | 55mV at 50mA; 130mV at 120mA - enables operation down to ~2.855V input with full 2.80V output regulation. |
| Quiescent Current | 82µA operating (load-independent); 0.1nA in shutdown - preserves battery life during sleep modes. |
| Input Voltage Range | +2.5V to +6.5V - supports single-cell Li-ion (2.7–4.2V), NiMH (2.4–4.8V), and two-cell alkaline (3.0–6.0V). |
| Auto-Discharge | Active 300Ω discharge path from OUT to GND in shutdown - prevents floating outputs and ensures clean system reset. |
| Protection Features | Thermal shutdown (+170°C), short-circuit current limit (280mA typ), reverse-battery protection (<1mA reverse current). |
Pinout & Package
MAX8874REUK-T is housed in a RoHS-compliant 5-pin SOT23 package (JEDEC MO-178AA), with GND serving as both electrical reference and thermal dissipation path. PCB layout requires direct connection of the GND pad to a large copper area or ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input supply | Accepts +2.5V to +6.5V; bypass with ≥1µF capacitor to GND for stability and transient response. |
| 2 - GND | Ground reference & thermal sink | Must be soldered to large PCB copper area to maintain junction temperature ≤+150°C under max load. |
| 3 - SET | Feedback mode selection | Tied to GND for fixed 2.80V output; left unconnected or >60mV triggers undefined behavior - never float. |
| 4 - SHDN | Active-low enable/discharge control | Logic low disables regulator and activates auto-discharge; connect to IN for always-on operation. |
| 5 - OUT | Regulated output | Delivers up to 120mA at 2.80V; requires ≥1µF output capacitor (ESR <0.2Ω) for stability across temperature. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode Operation | Fixed 2.80V output without external components - eliminates BOM cost and layout complexity vs. adjustable regulators. |
| P-Channel Pass Transistor | 1.1Ω typical RDS(ON) enables load-independent 82µA quiescent current - extends battery life in intermittent-load applications. |
| Auto-Discharge Function | 300Ω internal discharge path pulls OUT to GND within 200µs of SHDN assertion - ensures deterministic power-down sequencing. |
| Reverse Battery Protection | Blocks reverse current to <1mA when VIN or SHDN falls below GND - prevents battery drain and IC damage in miswired installations. |
| Thermal Shutdown Hysteresis | 20°C hysteresis prevents oscillation during overload - allows safe recovery after cooling without external intervention. |
Applications
| Hand-Held Instruments | Cellular Telephones |
|---|---|
|
Use Scenario: Portable multimeter or environmental sensor with microcontroller, LCD, and analog front-end powered from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 2.80V supply for MCU core and precision ADC reference rail. Use Value: Fixed 2.80V output matches common low-voltage MCU I/O requirements; 82µA quiescent current minimizes standby drain. |
Use Scenario: Baseband processor power domain in GSM/EDGE handset with aggressive sleep-cycle requirements. IC Role / Device Role / Timing Role: Always-on LDO for real-time clock and memory retention during deep-sleep states. Use Value: 0.1nA shutdown current and auto-discharge prevent leakage-induced wake-up or data corruption on power removal. |
| Cordless Telephones | PCMCIA Cards |
|
Use Scenario: DECT cordless phone handset with rechargeable NiMH battery and voice codec IC. IC Role / Device Role / Timing Role: Clean 2.80V supply for audio DAC and RF synthesizer biasing. Use Value: 55mV dropout enables full regulation until battery drops to 2.855V - maximizes usable battery capacity per charge cycle. |
Use Scenario: Compact flash or Wi-Fi PCMCIA card drawing burst current from host laptop's 3.3V rail. IC Role / Device Role / Timing Role: Local 2.80V regulator for card controller and interface logic. Use Value: Reverse-battery protection safeguards card electronics if inserted into miswired or damaged slots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout, fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2980AIM5-2.8/NOPB | Pin-compatible SOT23-5; 2.8V ±2% accuracy; 60µA IQ; no auto-discharge; 200mV dropout @100mA. | Lacks active output discharge - unsuitable where clean power-down sequencing is required. | Select when tighter output tolerance (±2%) and lower IQ are prioritized over discharge control. |
| TPS76328DBVR | SOT23-5; 2.8V ±3%; 17µA IQ; 300mV dropout @150mA; no auto-discharge; higher max current (150mA). | Higher dropout limits usable input range; no reverse-battery protection or auto-discharge. | Choose for ultra-low IQ in non-battery-critical systems where 300mV dropout is acceptable. |
Compared with LP2980AIM5-2.8/NOPB and TPS76328DBVR, the MAX8874REUK-T uniquely combines auto-discharge, reverse-battery protection, and load-independent 82µA IQ - making it the only option among the three qualified for safety-critical, single-cell portable designs requiring guaranteed output collapse and fault resilience.
Availability
MAX8874REUK-T is available at Aetrix Electronics and suitable for cellular telephones, hand-held instruments, cordless telephones, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8874REUK-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX8874REUK-T belongs to Maxim's low-dropout linear regulator family designed specifically for battery-powered portable equipment - emphasizing ultra-low quiescent current, small footprint, and robust protection features in minimal SOT23 packaging.
FAQ
What is the output voltage tolerance of the MAX8874REUK-T over temperature?
The MAX8874REUK-T provides a fixed 2.80V output with total error of ±3.5% across the full operating temperature range of -40°C to +85°C. This specification includes initial accuracy, line regulation, load regulation, and temperature drift - verified by production testing and SQC correlation. The MAX8874REUK-T maintains this tolerance without external trimming components.
Does the MAX8874REUK-T require external resistors to set its output voltage?
No, the MAX8874REUK-T does not require external resistors to set its output voltage. It is factory-trimmed to deliver a fixed 2.80V output when the SET pin is connected to GND. Leaving SET unconnected or applying voltage above 60mV may cause undefined regulation behavior - the device must be used in fixed mode per its R-suffix designation.
How does the auto-discharge function operate in the MAX8874REUK-T?
When the SHDN pin is driven low, the MAX8874REUK-T disables regulation and activates an internal 300Ω discharge path from the OUT pin to GND. This actively pulls the output voltage to ground within approximately 200µs, ensuring rapid and deterministic power-down - a feature absent in the MAX8873 series and most competing LDOs.
What is the minimum input voltage required for regulation at full 120mA load?
At 120mA load, the MAX8874REUK-T requires a minimum input voltage of 2.93V to maintain regulation - calculated as VOUT + VDROP = 2.80V + 130mV. Below this, the device enters dropout and output voltage declines linearly with input. Input voltage must remain ≥2.5V for basic functionality, but regulation is only guaranteed above the dropout threshold.
Is the MAX8874REUK-T protected against reverse battery connection?
Yes, the MAX8874REUK-T includes integrated reverse battery protection that limits reverse current to less than 1mA when either the IN or SHDN pin falls below GND potential. This protection operates without external components and prevents damage to both the IC and the battery during incorrect installation - a key reliability feature for field-deployed portable devices.
MAX8874REUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.25V (2.8V)
- Voltage - Output (Max):
- 6.5V
- Voltage Dropout (Max):
- 0.12V @ 50mA
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 82 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX8874REUK-T FAQ
1.How can I place an order for MAX8874REUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8874REUK-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 MAX8874REUK-T reliable?
The price and inventory of MAX8874REUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8874REUK-T is usually 5 days.
3.What payment methods are accepted for MAX8874REUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8874REUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8874REUK-T?
MAX8874REUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8874REUK-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 MAX8874REUK-T?
For technical support, including MAX8874REUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8874REUK-T requirements.
6.How does Aetrix verify that MAX8874REUK-T is sourced from the original manufacturer or authorized distributors?
All MAX8874REUK-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 MAX8874REUK-T meets industry standards.
7.What is the process for return or replacement of MAX8874REUK-T?
All MAX8874REUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8874REUK-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 MAX8874REUK-T part is unused and in its original packaging.
Return procedure for MAX8874REUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8874REUK-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
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
