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Analog Devices Inc./Maxim Integrated MAX8877EUK18+T
- Part No.:
- MAX8877EUK18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8877EUK18+T.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,475
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Product details
Overview
MAX8877EUK18+T from Maxim Integrated is a low-noise, low-dropout linear regulator with preset 1.8V output, delivering up to 150mA from 2.5V–6.5V input. It features 30µVRMS output noise, 165mV dropout at 150mA, and 100µA operating supply current independent of load or dropout condition. Designed for battery-powered portable electronics requiring stable, clean power under light-to-moderate load.
For engineers reviewing the MAX8877EUK18+T datasheet, MAX8877EUK18+T pinout, MAX8877EUK18+T application, or MAX8877EUK18+T equivalent, key selection criteria include output voltage accuracy (±1.4%), thermal shutdown behavior (155°C), reverse battery protection, and BP-capacitor–dependent noise performance.
Technical Context
The MAX8877EUK18+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 with 15°C hysteresis, short-circuit current limiting (160–390mA), and reverse battery protection that limits reverse current to 1mA. The BP pin accepts a 0.01µF ceramic capacitor to form an 80Hz low-pass filter, reducing output noise to 30µVRMS (10Hz–100kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.80V ±1.4% - factory-preset, no external feedback required |
| Max Output Current | 150mA - supports moderate-power analog/digital loads without derating |
| Dropout Voltage | 165mV at 150mA - enables operation down to VIN = 1.965V for full 1.8V output |
| Output Noise | 30µVRMS (10Hz–100kHz) - low enough for RF, ADC, and precision analog circuits |
| Quiescent Current | 100µA - constant across load and dropout, extending battery life in standby |
| Shutdown Current | 10nA - enables ultra-low-power system sleep modes |
| Input Voltage Range | 2.5V to 6.5V - compatible with single Li-ion, multi-cell alkaline, or regulated DC supplies |
Pinout & Package
MAX8877EUK18+T is housed in a RoHS-compliant 5-pin SOT23-5 regular package (JEDEC MO-178AA), with GND serving as both electrical return and thermal path. Pin 2 (GND) must be soldered to a large PCB copper area for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input supply | Accepts 2.5V–6.5V; requires ≥1µF bypass capacitor to GND for stability and line-transient suppression |
| 2 - GND | Ground reference and thermal sink | Electrical return path and primary heat conduction route; must connect to large PCB ground plane |
| 3 - SHDN | Active-low enable control | Pull low to enter 10nA shutdown; pull high (≥2.0V) or tie to IN for normal operation |
| 4 - BP | Bypass node for reference noise filtering | Connects to 0.01µF ceramic capacitor to reduce output noise; start-up time increases with larger values |
| 5 - OUT | Regulated output | Delivers up to 150mA; requires ≥1µF (ESR <0.2Ω) ceramic capacitor for VOUT ≥2.5V; 3.3µF for lower voltages |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss, enabling 100µA quiescent current even in dropout |
| Reverse battery protection | Limits reverse current to ≤1mA when VIN or SHDN falls below GND, preventing damage in miswired battery packs |
| Thermal shutdown with hysteresis | Shuts down at 155°C junction temperature and re-enables only after cooling by 15°C, preventing thermal oscillation |
| BP-capacitor–tuned noise reduction | 0.01µF on BP reduces output noise to 30µVRMS; larger values degrade startup time without meaningful noise benefit |
| Current limiting with safe short-circuit operation | Guaranteed minimum 160mA current limit protects device during sustained output shorts |
Applications
| Cellular Telephone Power Management | Hand-Held Instrument Supply |
|---|---|
Use Scenario: Providing clean, low-noise bias to RF front-end ICs and baseband processors in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary 1.8V LDO for digital core logic and memory interfaces. Use Value: 30µVRMS noise and 165mV dropout extend usable battery range while maintaining signal integrity in sensitive receive paths. |
Use Scenario: Powering microcontroller peripherals and precision analog sensors in portable multimeters or data loggers. IC Role / Device Role / Timing Role: Low-quiescent 1.8V regulator for mixed-signal subsystems requiring stable reference voltage. Use Value: 100µA IQ and ±1.4% output accuracy ensure long battery life and measurement repeatability over temperature and load. |
| PCMCIA Card Regulation | Electronic Planner Power System |
Use Scenario: Delivering regulated 1.8V to PCMCIA Type II card controllers and interface logic during hot insertion. IC Role / Device Role / Timing Role: Input-stage LDO with reverse battery protection and fast transient response. Use Value: Reverse battery protection prevents latch-up during incorrect card insertion; 12mV load-step transient ensures reliable communication handshake. |
Use Scenario: Supplying real-time clock (RTC), SRAM, and LCD controller in battery-backed personal organizers. IC Role / Device Role / Timing Role: Always-on 1.8V regulator supporting low-power retention mode. Use Value: 10nA shutdown current preserves coin-cell battery life for years; thermal shutdown prevents overheating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | Higher 250mV dropout at 150mA; 17µVRMS noise; no BP pin or reverse battery protection | Lacks reverse polarity protection and BP-based noise tuning; suited for cost-sensitive, non-battery-reversal environments | Select when lowest BOM cost is critical and reverse battery risk is absent |
| TCS2118-1.8V | 120mV dropout at 150mA; 45µVRMS noise; 1.2µA quiescent current; no thermal shutdown or reverse battery protection | Lower dropout but higher noise and no fault protections; requires external thermal monitoring | Select only when minimal dropout is prioritized over safety features and noise performance |
Compared with MCP1700T-1802E/TT and TCS2118-1.8V, the MAX8877EUK18+T uniquely combines ultra-low noise (30µVRMS), reverse battery protection, and thermal hysteresis-making it the only choice for robust, noise-sensitive battery-powered designs where reliability under fault conditions is mandatory.
Availability
MAX8877EUK18+T is available at Aetrix Electronics and suitable for cellular telephones, hand-held instruments, PCMCIA cards, and electronic planners requiring stable component supply across industrial temperature ranges (-40°C to +85°C) and long-term production continuity.
Supply support for MAX8877EUK18+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 family was designed specifically for battery-powered portable electronics needing low-noise, low-IQ regulation with integrated fault protection-targeting cellular handsets, handheld test equipment, and compact computing devices.
FAQ
What is the output voltage tolerance of the MAX8877EUK18+T over temperature and load?
The MAX8877EUK18+T guarantees ±1.4% output voltage accuracy across the full -40°C to +85°C operating temperature range and for output currents from 0.1mA to 120mA. At room temperature and light load (0.1mA), the tolerance tightens to ±1.4% min/max, ensuring consistent 1.8V rail performance in precision analog and digital systems without trimming.
Does the MAX8877EUK18+T require an external feedback network to set its 1.8V output?
No, the MAX8877EUK18+T does not require external feedback components. Its 1.8V output is factory-preset using an internal resistor divider, eliminating external resistors and associated layout sensitivity. This simplifies design, improves accuracy, and reduces bill-of-materials cost compared to adjustable LDOs.
How does the BP pin function in the MAX8877EUK18+T, and what capacitor value is recommended?
The BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter that suppresses reference noise. A 0.01µF ceramic capacitor is recommended: it achieves the specified 30µVRMS output noise while minimizing startup delay. Capacitors >0.1µF increase startup time without improving noise, and are not advised per the datasheet.
Can the MAX8877EUK18+T safely operate with input voltage below 2.5V?
No-the MAX8877EUK18+T has a minimum input voltage specification of 2.5V. Operation below this violates Absolute Maximum Ratings and may cause unpredictable regulation, increased noise, or failure to maintain 1.8V output. For sub-2.5V inputs, consider alternative regulators rated for lower VIN, such as the MAX8860 series.
What protection features are integrated into the MAX8877EUK18+T?
The MAX8877EUK18+T integrates five protection features: (1) thermal shutdown at 155°C with 15°C hysteresis, (2) short-circuit current limiting (160–390mA), (3) reverse battery protection (≤1mA reverse current), (4) safe infinite-duration output short-circuit capability, and (5) logic-controlled shutdown with 10nA quiescent current. These ensure robust operation in portable and field-deployed equipment.
MAX8877EUK18+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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- 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
MAX8877EUK18+T FAQ
1.How can I place an order for MAX8877EUK18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EUK18+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 MAX8877EUK18+T reliable?
The price and inventory of MAX8877EUK18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EUK18+T is usually 5 days.
3.What payment methods are accepted for MAX8877EUK18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EUK18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EUK18+T?
MAX8877EUK18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EUK18+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 MAX8877EUK18+T?
For technical support, including MAX8877EUK18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EUK18+T requirements.
6.How does Aetrix verify that MAX8877EUK18+T is sourced from the original manufacturer or authorized distributors?
All MAX8877EUK18+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 MAX8877EUK18+T meets industry standards.
7.What is the process for return or replacement of MAX8877EUK18+T?
All MAX8877EUK18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EUK18+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 MAX8877EUK18+T part is unused and in its original packaging.
Return procedure for MAX8877EUK18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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