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Analog Devices Inc./Maxim Integrated MAX8877EZK26
- Part No.:
- MAX8877EZK26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8877EZK26.pdf
- Description:
- LOW-NOISE, LOW-DROPOUT, 150MILLI
- Quantity:
- Payment:
- Shipping:
Inventory:1,331
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Product details
Overview
MAX8877EZK26 from Maxim Integrated is a low-noise, low-dropout linear regulator with preset 2.6V 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 voltage rails.
For engineers reviewing the MAX8877EZK26 datasheet, MAX8877EZK26 pinout, MAX8877EZK26 application, or MAX8877EZK26 equivalent, key selection criteria include its thin SOT23-5 package, 2.6V ±1.4% output accuracy, reverse battery protection, 10nA shutdown current, and BP-capacitor–enabled noise filtering - all critical for space-constrained, low-power, high-SNR designs.
Technical Context
The MAX8877EZK26 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.
It integrates thermal shutdown (155°C trip, 15°C hysteresis), short-circuit current limiting (160–390mA), reverse battery protection (<1mA reverse current), and logic-controlled active-low SHDN with 10nA quiescent draw. Unlike the MAX8878, it lacks auto-discharge functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.6V ±1.4% (factory-preset; stable over –40°C to +85°C, 0.1–120mA load) |
| Max Output Current | 150mA continuous; supports peak loads without foldback or thermal shutdown under normal conditions |
| Dropout Voltage | 165mV at 150mA (enables operation down to VIN = 2.76V for full regulation) |
| Output Noise | 30µVRMS (10Hz–100kHz, with 0.01µF BP cap; enables analog/RF supply filtering) |
| Quiescent Current | 100µA (constant across load, dropout, and temperature; extends battery life in always-on systems) |
| Shutdown Current | 10nA (logic-low SHDN disables regulator and minimizes system standby drain) |
| Input Voltage Range | 2.5V to 6.5V (supports single Li-ion, dual Alkaline/NiMH, or regulated intermediate rails) |
Pinout & Package
MAX8877EZK26 is housed in a thin 5-pin SOT23 package (JEDEC MO-178AA), optimized for low profile and thermal performance (θJB = 110°C/W). The GND pin serves as both electrical return and primary heat path - requires soldering to a large PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 2.5V–6.5V; requires ≥1µF ceramic bypass to GND for stability and line-transient suppression |
| 2 GND | Ground reference & thermal pad | Electrical return and primary heat conduction path; must connect to large PCB ground plane |
| 3 SHDN | Active-low enable control | Logic-low (≤0.4V) disables regulator and reduces IQ to 10nA; tie to IN for always-on operation |
| 4 BP | Bypass capacitor connection | Connects to internal 200kΩ resistor forming 80Hz LPF; 0.01µF ceramic cap reduces output noise to 30µVRMS |
| 5 OUT | Regulated output | Delivers 2.6V @ ≤150mA; requires ≥1µF (ESR <0.2Ω) ceramic cap for VOUT ≥2.5V stability |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss; maintains 100µA IQ even in dropout or heavy load |
| Reverse battery protection | Limits reverse current to <1mA when VIN or SHDN falls below GND - prevents damage in miswired battery compartments |
| Thermal overload protection | Shuts down at 155°C junction temp with 15°C hysteresis; enables safe operation under sustained overload |
| Factory-set 2.6V output | ±1.4% initial accuracy eliminates external feedback resistors - reduces BOM count and layout area |
| Low-noise BP pin architecture | Enables 30µVRMS noise via 0.01µF ceramic cap - suitable for powering ADCs, RF ICs, and precision analog circuitry |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
|
Use Scenario: Powering baseband processor core voltage and RF front-end bias rails in compact GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary LDO supplying clean 2.6V to sensitive analog sections while rejecting switching noise from PMU DC-DC converters. Use Value: 30µVRMS noise and 165mV dropout extend usable battery range and prevent SNR degradation in receive paths. |
Use Scenario: Providing regulated 2.6V to memory controllers and interface logic on hot-pluggable PCMCIA Type II cards. IC Role / Device Role / Timing Role: Local point-of-load regulator ensuring stable voltage during insertion/removal transients and varying host bus loading. Use Value: 10nA shutdown current and reverse battery protection prevent card leakage and damage during blind insertion into powered slots. |
| Hand-Held Instruments | Electronic Planners |
|
Use Scenario: Supplying precision ADC reference buffers and sensor signal chains in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source maintaining accuracy of 16-bit+ measurements across battery discharge cycle. Use Value: ±1.4% output accuracy and <0.04%/mA load regulation minimize measurement offset drift under varying sensor load conditions. |
Use Scenario: Powering real-time clock (RTC), SRAM backup, and touch controller in battery-backed PDAs and organizers. IC Role / Device Role / Timing Role: Always-on LDO sustaining critical functions during main system sleep, with ultra-low IQ preserving coin-cell life. Use Value: 100µA operating current and 10nA shutdown current enable >1-year RTC backup from CR2032 without recharge. |
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 |
|---|---|---|---|
| MAX8877EUK26-T | Same electrical specs and pinout, but in regular (not thin) SOT23-5 package (θJB = 140°C/W vs. 110°C/W) | Higher thermal resistance limits power dissipation in high-ambient or high-current scenarios | Select when board height is unconstrained and thermal margin exceeds 10°C |
| TCS2116-2.6V | 2.6V fixed-output LDO with 45µVRMS noise, 200mV dropout at 150mA, and 120µA IQ; no reverse battery protection | Lacks reverse polarity protection and has higher noise - unsuitable for battery-reversal-prone consumer enclosures | Consider only in cost-sensitive, non-battery-reversal applications where 15µVRMS noise penalty is acceptable |
Compared with MAX8877EZK26, the MAX8877EUK26-T offers identical regulation performance but reduced thermal capability in dense layouts, while the TCS2116-2.6V trades reverse protection and lower noise for slightly lower cost - making MAX8877EZK26 optimal for height-limited, battery-reversal-exposed, high-SNR portable designs.
Availability
MAX8877EZK26 is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, hand-held instruments, and electronic planners requiring stable component supply, long-lifecycle support, and guaranteed thin-profile packaging.
Supply support for MAX8877EZK26 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 family was designed specifically for battery-powered portable electronics needing ultra-low-noise, low-quiescent-current, and reverse-polarity–protected voltage regulation in minimal footprint.
FAQ
What is the output voltage tolerance of the MAX8877EZK26 over temperature and load?
The MAX8877EZK26 guarantees ±1.4% output voltage accuracy at TA = +25°C with 0.1mA load. Over full operating range (–40°C to +85°C, 0.1–120mA), output voltage remains within ±3.5% for VOUT < 2.5V and ±3.0% for VOUT ≥ 2.5V. Since MAX8877EZK26 is a 2.6V variant, its worst-case deviation is ±3.0%, or ±78mV, ensuring reliable operation for 2.5V-tolerant logic and analog circuits.
Does the MAX8877EZK26 include auto-discharge functionality during shutdown?
No, the MAX8877EZK26 does not include auto-discharge. That feature is exclusive to the MAX8878 series. When MAX8877EZK26 enters shutdown (SHDN ≤ 0.4V), the output remains floating at its last regulated voltage - it does not actively pull OUT to GND. Designers requiring fast output discharge must add an external NMOS switch or bleed resistor.
What capacitor values are required for stable operation of the MAX8877EZK26?
For stable operation, MAX8877EZK26 requires a minimum 1µF ceramic capacitor (X7R/X5R dielectric, ESR <0.2Ω) on the OUT pin, and a 1µF ceramic capacitor on the IN pin. The BP pin requires a 0.01µF ceramic capacitor for optimal noise reduction. For VOUT = 2.6V (≥2.5V), the 1µF output capacitor is sufficient across –40°C to +85°C with loads up to 150mA.
How does the MAX8877EZK26 achieve low dropout with a P-channel MOSFET?
The MAX8877EZK26 uses an internal P-channel MOSFET pass transistor with ~1.1Ω RDS(ON). Dropout voltage is calculated as ILOAD × RDS(ON), yielding 165mV at 150mA. Unlike PNP-based LDOs, it needs no base drive current - enabling constant 100µA quiescent current regardless of load or input voltage, which directly improves battery runtime in portable devices using MAX8877EZK26.
Is the MAX8877EZK26 pin-compatible with the industry-standard '2982 regulator?
Yes, the MAX8877EZK26 is fully pin-compatible with the industry-standard µA78Lxx and MC78Lxx families (collectively referenced as '2982 in Maxim documentation). Pin 1 (IN), Pin 2 (GND), Pin 3 (SHDN), Pin 4 (BP), and Pin 5 (OUT) match the functional pinout of those legacy regulators - enabling drop-in replacement in existing designs without PCB modification.
MAX8877EZK26 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.6V
- 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:
- TSOT-23-5
MAX8877EZK26 FAQ
1.How can I place an order for MAX8877EZK26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EZK26 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 MAX8877EZK26 reliable?
The price and inventory of MAX8877EZK26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EZK26 is usually 5 days.
3.What payment methods are accepted for MAX8877EZK26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EZK26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EZK26?
MAX8877EZK26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EZK26 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 MAX8877EZK26?
For technical support, including MAX8877EZK26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EZK26 requirements.
6.How does Aetrix verify that MAX8877EZK26 is sourced from the original manufacturer or authorized distributors?
All MAX8877EZK26 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 MAX8877EZK26 meets industry standards.
7.What is the process for return or replacement of MAX8877EZK26?
All MAX8877EZK26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EZK26, 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 MAX8877EZK26 part is unused and in its original packaging.
Return procedure for MAX8877EZK26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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