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 4.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,605
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 preset 4.8V output, delivering up to 150mA from 2.5V–6.5V input. It features 165mV dropout at full load, 30µVRMS output noise, and 100µA operating supply current. Designed for battery-powered portable electronics, it integrates reverse-battery protection, thermal shutdown, and auto-discharge functionality.
For engineers reviewing the MAX8878EUK48+T datasheet, MAX8878EUK48+T pinout, MAX8878EUK48+T application, or MAX8878EUK48+T equivalent, key selection criteria include guaranteed 4.8V ±1.4% accuracy across -40°C to +85°C, SOT23-5 regular package compatibility with '2982 footprint, and active output discharge during shutdown - critical for power sequencing in handheld instruments and PCMCIA cards.
Technical Context
The MAX8878EUK48+T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) enabling ultra-low quiescent current (100µA) independent of load or dropout condition. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
It incorporates dedicated circuitry for auto-discharge (300Ω discharge path to GND when SHDN = low), BP-pin-based 80Hz noise filtering (with 0.01µF ceramic capacitor), and thermal shutdown at +155°C with 15°C hysteresis - all implemented without external components beyond required bypass capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.8V ±1.4% over -40°C to +85°C - ensures stable rail for 5V-tolerant logic and analog circuits without external feedback. |
| Max Output Current | 150mA continuous - supports moderate-power microcontrollers, RF front-ends, and sensor interfaces in compact portable designs. |
| Dropout Voltage | 165mV at 150mA - enables operation down to 4.965V input, extending usable battery life in single-cell Li-ion or multi-cell alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz, CBP=0.01µF, COUT=10µF) - suitable for noise-sensitive ADC references and RF synthesizer supplies. |
| Quiescent Current | 100µA at full load and in dropout - maintains efficiency during deep discharge or standby modes without sacrificing regulation. |
| Shutdown Current | 10nA logic-controlled shutdown - eliminates leakage paths while preserving system-level power budget in always-on architectures. |
| Auto-Discharge Resistance | 300Ω (MAX8878 only) - actively pulls OUT to GND within microseconds upon shutdown, preventing backfeeding or latch-up in stacked-rail systems. |
Pinout & Package
MAX8878EUK48+T is housed in a 5-pin SOT23-5 regular package (JEDEC MO-178AA), with exposed pad not electrically connected. The GND pin serves dual function as electrical reference and thermal path; soldering to a large PCB copper area improves thermal performance and power dissipation capability (571mW at +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts 2.5V–6.5V supply; requires ≥1µF ceramic bypass to GND for stability and line-transient immunity. |
| 2 GND | Ground / Thermal Pad | Reference node and primary heat sink; must connect to large PCB ground plane to maintain TJ ≤ +150°C under max load. |
| 3 SHDN | Active-Low Shutdown Control | Logic-low disables regulator and triggers auto-discharge on MAX8878; pull high to IN for default operation. |
| 4 BP | Bypass Reference Node | Connects to 0.01µF ceramic capacitor to reduce reference noise; forms 80Hz low-pass filter with internal 200kΩ resistor. |
| 5 OUT | Regulated Output | Delivers 4.8V at up to 150mA; requires ≥1µF ceramic capacitor (ESR < 0.2Ω) for VOUT ≥ 2.5V stability. |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss, enabling constant 100µA IQ across all load and dropout conditions - extends battery runtime in portable devices. |
| Auto-discharge function | 300Ω internal discharge path actively pulls OUT to GND during SHDN assertion - prevents backpowering of upstream circuitry and simplifies power sequencing. |
| Reverse battery protection | Limits reverse current to ≤1mA if VIN or SHDN falls below GND - protects IC and system during incorrect battery insertion without external diodes. |
| Thermal shutdown with hysteresis | Triggers at +155°C and re-enables only after cooling by 15°C - provides robust fault recovery during sustained overload without latch-up. |
| Low-noise BP pin architecture | Enables 30µVRMS output noise using only 0.01µF external capacitor - achieves clean supply for precision analog blocks without complex filtering. |
Applications
| Hand-Held Instruments | PCMCIA Cards |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by two AA/AAA cells with dynamic load switching between measurement and display modes. IC Role / Device Role / Timing Role: Primary 4.8V supply regulator for microcontroller, ADC, and LCD driver - maintaining regulation during battery voltage decay from 3.2V to 2.5V per cell. Use Value: 165mV dropout allows >15% longer operational time before brownout versus standard LDOs; auto-discharge prevents display ghosting during sleep mode transitions. |
Use Scenario: Hot-pluggable PCMCIA memory or modem cards requiring controlled power-up/down sequencing and isolation from host bus voltage. IC Role / Device Role / Timing Role: Local 4.8V regulator with fast shutdown exit (<300µs) and active discharge - ensuring safe card insertion/removal without bus contention or voltage backfeed. Use Value: 10nA shutdown current meets PCMCIA Type II power budget; 300Ω discharge path clears output within 1ms, satisfying card reset timing requirements. |
| Palmtop Computers | Electronic Planners |
Use Scenario: Compact PDAs with integrated GPS, Bluetooth, and touchscreen, operating from single-cell Li-ion with tight thermal constraints. IC Role / Device Role / Timing Role: Main system rail regulator supplying CPU core and peripheral I/O - managing transient loads up to 150mA while minimizing self-heating. Use Value: 100µA fixed IQ avoids efficiency collapse at light loads; SOT23-5 footprint enables placement near processor for optimal decoupling and EMI control. |
Use Scenario: Low-power electronic organizers with real-time clock, memory, and monochrome LCD - running continuously for weeks on coin-cell or small alkaline batteries. IC Role / Device Role / Timing Role: Precision 4.8V source for RTC backup and SRAM retention - maintaining voltage accuracy ±1.4% over temperature and aging. Use Value: 30µVRMS noise prevents clock jitter accumulation; reverse-battery protection safeguards against user-induced polarity reversal during battery replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8877EUK48+T | No auto-discharge function; identical pinout, specs, and package - same 4.8V output, 165mV dropout, 30µVRMS noise. | Suitable where output hold-up during shutdown is acceptable; lacks active discharge path for strict power sequencing. | Select MAX8877EUK48+T only if auto-discharge is unnecessary and cost minimization is prioritized. |
| MCP1703T-4802E/MB | Higher 250mV dropout at 150mA; 45µVRMS noise; 3µA quiescent current but no reverse-battery protection or thermal hysteresis. | Lower IQ benefits ultra-long-life applications, but higher dropout reduces usable battery range; no discharge or reverse protection. | Choose MCP1703T-4802E/MB only for static, low-transient applications where battery life outweighs sequencing safety and noise performance. |
Compared with MAX8877EUK48+T, the MAX8878EUK48+T adds essential auto-discharge for reliable hot-swap compliance, while MCP1703T-4802E/MB trades off noise, protection, and dropout for lower quiescent current - making MAX8878EUK48+T the optimal choice for portable systems demanding both precision and robust power control.
Availability
MAX8878EUK48+T is available at Aetrix Electronics and suitable for hand-held instruments, PCMCIA cards, and palmtop computers requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across industrial temperature range.
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 industrial, communications, and consumer applications.
The MAX8877/MAX8878 product line was designed specifically for battery-powered portable electronics requiring ultra-low noise, minimal dropout, and integrated protection - targeting cellular telephones, cordless handsets, and compact computing platforms.
FAQ
What is the exact output voltage tolerance of MAX8878EUK48+T over temperature?
The MAX8878EUK48+T guarantees output voltage accuracy of ±1.4% over the full operating temperature range of -40°C to +85°C, measured at IOUT = 0.1mA to 120mA. This specification applies directly to the factory-preset 4.8V output and is confirmed in the Electrical Characteristics table of the official datasheet under "Output Voltage Accuracy" parameter.
Does MAX8878EUK48+T require external components for basic operation?
Yes, MAX8878EUK48+T requires three external capacitors: a ≥1µF ceramic capacitor from IN to GND, a ≥1µF ceramic capacitor from OUT to GND (ESR < 0.2Ω), and a 0.01µF ceramic capacitor from BP to GND. These are mandatory for stability, noise reduction, and proper startup behavior - no internal compensation is provided.
How does the auto-discharge function of MAX8878EUK48+T operate during shutdown?
When SHDN is pulled low, MAX8878EUK48+T activates an internal 300Ω discharge path from OUT to GND, actively pulling the output voltage to ground within microseconds. This behavior is exclusive to the MAX8878 variant and is absent in the MAX8877 series - verified in the Pin Description and Detailed Description sections of the datasheet.
Can MAX8878EUK48+T be used with input voltages below 2.5V?
No, MAX8878EUK48+T has a minimum specified input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V is not characterized or guaranteed - the regulator will not maintain regulation, and parameters such as dropout, noise, and accuracy do not apply.
Is MAX8878EUK48+T pin-compatible with industry-standard '2982 regulators?
Yes, MAX8878EUK48+T is explicitly designed as pin-compatible with the industry-standard '2982 family, sharing identical SOT23-5 pinout (IN, GND, SHDN, BP, OUT), footprint, and mounting dimensions - confirmed in the General Description and Pin Configuration diagrams of the datasheet.
MAX8878EUK48+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
