My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8878EUK48-T
- Part No.:
- MAX8878EUK48-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8878EUK48-T.pdf
- Description:
- IC REG LINEAR LOW NOISE LDO
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8878EUK48-T from Maxim Integrated is a low-noise, low-dropout linear regulator with 4.8V preset output, 150mA maximum output current, 165mV dropout at full load, 30µVRMS output noise, and 100µA operating supply current. It features auto-discharge during shutdown and reverse battery protection, designed for space-constrained portable power rails in handheld instruments and PCMCIA cards.
For engineers reviewing the MAX8878EUK48-T datasheet, MAX8878EUK48-T pinout, MAX8878EUK48-T application, or MAX8878EUK48-T equivalent, key selection criteria include its SOT23-5 regular package, 4.8V ±1.4% output accuracy, thermal shutdown at 155°C, and BP-capacitor–enabled noise filtering - all critical for battery-powered systems requiring stable low-noise biasing.
Technical Context
The MAX8878EUK48-T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) to achieve low dropout and eliminate base-drive current loss. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin, enabling precise regulation without external resistors.
It integrates logic-controlled shutdown (10nA ISHDN), thermal overload protection (155°C trip, 15°C hysteresis), short-circuit current limiting (160–390mA), and reverse battery protection (<1mA reverse current). The MAX8878 variant uniquely adds active output discharge via a 300Ω internal resistance when SHDN is asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.8V ±1.4% (factory-preset; no external resistors required) |
| Max Output Current | 150mA (supports moderate-power analog/digital loads) |
| Dropout Voltage | 165mV at 150mA (enables operation down to VIN = 4.965V) |
| Output Noise | 30µVRMS (10Hz–100kHz; enables clean supply for RF/ADC circuits) |
| Quiescent Current | 100µA (load- and dropout-independent; extends battery life) |
| Shutdown Current | 10nA (logic-controlled; preserves system standby time) |
| Input Voltage Range | 2.5V to 6.5V (compatible with single Li-ion, dual Alkaline, or regulated 5V rails) |
Pinout & Package
MAX8878EUK48-T is housed in a 5-pin SOT23-5 regular package (JEDEC MO-178AA), with GND serving as both electrical reference and thermal path. The package supports reflow soldering and requires PCB ground plane connection for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 2.5V–6.5V; bypass with 1µF ceramic capacitor to GND for stability |
| 2 GND | Ground and thermal pad | Electrical return and primary heat dissipation path; must connect to large copper area |
| 3 SHDN | Active-low shutdown control | Pulls output to ground via 300Ω discharge path when low (MAX8878-specific) |
| 4 BP | Bypass capacitor terminal | Connects to 0.01µF ceramic cap to reduce reference noise; sets 80Hz filter pole |
| 5 OUT | Regulated output | Delivers up to 150mA at 4.8V; bypass with ≥1µF ceramic cap (ESR <0.2Ω) for VOUT ≥2.5V |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge on shutdown | 300Ω internal discharge path actively pulls OUT to GND - eliminates residual voltage holdup in portable systems |
| Reverse battery protection | Limits reverse current to <1mA when VIN or SHDN falls below GND - prevents damage in misinserted battery scenarios |
| P-channel MOSFET pass element | 1.1Ω typical RDS(ON) enables low dropout and zero base-drive loss - improves efficiency over PNP-based regulators |
| Low-noise BP filtering | Internal 200kΩ resistor + external 0.01µF BP cap forms 80Hz low-pass filter - reduces reference noise contribution to output |
| Thermal shutdown with hysteresis | 155°C trip / 140°C recovery cycle prevents latch-up during sustained overload - allows safe intermittent operation |
Applications
| Hand-Held Instruments | PCMCIA Cards |
|---|---|
|
Use Scenario: Portable multimeters and data loggers powered by two AA cells with tight space constraints. IC Role / Device Role / Timing Role: Primary 4.8V bias rail for precision ADCs, op-amps, and microcontroller peripherals. Use Value: 30µVRMS noise and 100µA quiescent current extend battery life while preserving measurement accuracy. |
Use Scenario: Credit-card-sized PCMCIA modems requiring regulated 4.8V for RS-232 transceivers and flash memory. IC Role / Device Role / Timing Role: Local LDO supplying isolated 4.8V rail independent of host bus voltage fluctuations. Use Value: 165mV dropout ensures operation until battery drops to 4.965V - maximizes usable cell voltage range. |
| Palmtop Computers | Electronic Planners |
|
Use Scenario: Early-generation palmtops using single-cell Li-ion batteries with dynamic load switching between display backlight and CPU. IC Role / Device Role / Timing Role: Stable 4.8V supply for SRAM and real-time clock circuitry during deep-sleep states. Use Value: 10nA shutdown current and auto-discharge prevent phantom load - eliminates need for external discharge FET. |
Use Scenario: Battery-powered PDAs with EEPROM-backed calendar and alarm functions requiring glitch-free power sequencing. IC Role / Device Role / Timing Role: Always-on 4.8V regulator feeding RTC and nonvolatile memory during main system shutdown. Use Value: Reverse battery protection safeguards against accidental polarity reversal during battery replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8877EUK48-T | No auto-discharge; identical pinout, output voltage, and noise performance | Suitable where output holdup during shutdown is acceptable or externally managed | Select when lower cost and absence of discharge function align with system architecture |
| Torex XC6206P482MR | 4.8V fixed, 150mA, but higher 250mV dropout and 40µVRMS noise; SOT23-5 compatible | Less suitable for ultra-low-noise or deep-battery-discharge applications | Consider only if footprint compatibility is critical and 165mV dropout margin is not required |
Compared with MAX8878EUK48-T, the MAX8877EUK48-T lacks active discharge but matches all other electrical specs and pinout, while the XC6206P482MR trades off noise and dropout for broader vendor availability - making MAX8878EUK48-T optimal for noise-sensitive, battery-endurance–critical designs.
Availability
MAX8878EUK48-T is available at Aetrix Electronics and suitable for hand-held instruments, PCMCIA cards, palmtop computers, and electronic planners requiring stable component supply across industrial temperature ranges (-40°C to +85°C).
Supply support for MAX8878EUK48-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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding applications.
The MAX8877/MAX8878 product line was engineered specifically for battery-powered portable electronics, emphasizing ultra-low quiescent current, low-noise regulation, and robust fault protection in minimal SOT23-5 footprints.
FAQ
What is the exact output voltage tolerance of the MAX8878EUK48-T?
The MAX8878EUK48-T has a factory-preset output voltage of 4.8V with ±1.4% accuracy over temperature and load (–40°C to +85°C, 0.1mA to 120mA). This specification is guaranteed across the full operating range and does not require external trimming components.
Does the MAX8878EUK48-T require external resistors to set its output voltage?
No, the MAX8878EUK48-T does not require external resistors. Its 4.8V output is internally preset using a precision resistor divider network. This eliminates layout complexity, component count, and tolerance drift associated with external feedback networks.
How does the auto-discharge function operate in the MAX8878EUK48-T?
When the SHDN pin is driven low, the MAX8878EUK48-T activates an internal 300Ω discharge path between OUT and GND. This actively pulls the output voltage to ground within microseconds, preventing residual voltage from interfering with downstream circuit reset sequencing.
What is the recommended capacitor for the BP pin on the MAX8878EUK48-T?
The MAX8878EUK48-T requires a 0.01µF ceramic capacitor between BP and GND. This value optimizes output noise reduction (30µVRMS) while maintaining fast startup; larger values increase start-up time without meaningful noise improvement, and values above 0.1µF are not recommended.
Can the MAX8878EUK48-T be used with input voltages below 2.5V?
No, the MAX8878EUK48-T has a minimum specified input voltage of 2.5V. Operation below this violates Absolute Maximum Ratings and may result in unregulated output or device malfunction. For sub-2.5V inputs, alternative regulators such as the MAX8860 series should be evaluated.
MAX8878EUK48-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:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 4.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 150mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 100 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
MAX8878EUK48-T FAQ
1.How can I place an order for MAX8878EUK48-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8878EUK48-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 MAX8878EUK48-T reliable?
The price and inventory of MAX8878EUK48-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8878EUK48-T is usually 5 days.
3.What payment methods are accepted for MAX8878EUK48-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8878EUK48-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8878EUK48-T?
MAX8878EUK48-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8878EUK48-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 MAX8878EUK48-T?
For technical support, including MAX8878EUK48-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8878EUK48-T requirements.
6.How does Aetrix verify that MAX8878EUK48-T is sourced from the original manufacturer or authorized distributors?
All MAX8878EUK48-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 MAX8878EUK48-T meets industry standards.
7.What is the process for return or replacement of MAX8878EUK48-T?
All MAX8878EUK48-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8878EUK48-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 MAX8878EUK48-T part is unused and in its original packaging.
Return procedure for MAX8878EUK48-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8878EUK48-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
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
