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Analog Devices Inc./Maxim Integrated MAX8877EUK26+T
- Part No.:
- MAX8877EUK26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8877EUK26+T.pdf
- Description:
- IC REG LINEAR 2.6V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,896
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Product details
Overview
The MAX8877EUK26+T from Maxim Integrated is a low-noise, low-dropout linear regulator with a preset 2.6V output, delivering up to 150mA from a 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. It serves as a precision voltage source in battery-powered portable electronics requiring stable, low-noise power for RF or analog circuitry.
For engineers reviewing the MAX8877EUK26+T datasheet, MAX8877EUK26+T pinout, MAX8877EUK26+T application, or MAX8877EUK26+T equivalent, key selection criteria include its SOT23-5 package compatibility with '2982 footprints, reverse-battery protection, thermal shutdown at 155°C, and BP-pin noise-filtering capability using a 0.01µF capacitor.
Technical Context
The MAX8877EUK26+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), short-circuit and thermal-overload protection (155°C trip, 15°C hysteresis), reverse-battery protection limiting reverse current to 1mA, and output current limiting (160–390mA range). The BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter with an external 0.01µF capacitor to suppress reference noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.6V ±1.4% (factory-preset; eliminates need for external feedback resistors) |
| Max Output Current | 150mA continuous (supports compact portable loads like RF front-ends or ADCs) |
| Dropout Voltage | 165mV at 150mA (enables operation down to VIN = 2.76V for full 2.6V output) |
| Output Noise | 30µVRMS (10Hz–100kHz, with CBP = 0.01µF and COUT = 10µF; suitable for noise-sensitive analog/RF stages) |
| Quiescent Current | 100µA (constant across load and dropout; extends battery life in always-on subsystems) |
| Shutdown Current | 10nA (logic-low SHDN disables regulator and minimizes system standby leakage) |
| Input Voltage Range | 2.5V to 6.5V (compatible with single Li-ion, dual NiMH, or regulated 3.3V/5V rails) |
Pinout & Package
MAX8877EUK26+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 footprint matches industry-standard '2982 regulators, enabling drop-in replacement in existing layouts.
| 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 suppression |
| 2 - GND | Ground reference & thermal pad | Electrical return and primary heat dissipation path; must connect to large PCB copper area for thermal management |
| 3 - SHDN | Active-low enable control | Logic-low (≤0.4V) places device in 10nA shutdown; logic-high (≥2.0V) enables regulation |
| 4 - BP | Bypass for reference noise reduction | Connects to internal 200kΩ resistor; 0.01µF ceramic capacitor here reduces output noise by filtering bandgap reference ripple |
| 5 - OUT | Regulated output | Delivers up to 150mA at 2.6V; requires ≥1µF (ESR <0.2Ω) ceramic capacitor for VOUT ≥2.5V; stable with 1–10µF range |
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 |
| Reverse battery protection | Clamps 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 runaway |
| Factory-trimmed output accuracy | ±1.4% over -40°C to +85°C ensures reliable operation without calibration in production systems |
| Low-noise BP pin architecture | Enables 30µVRMS output noise via simple 0.01µF capacitor-no complex filtering required for sensitive analog circuits |
Applications
| Cellular Phone RF Power Amplifier Bias | Hand-Held Instrument Analog Front-End |
|---|---|
Use Scenario: Providing clean bias voltage to GaAs RF power amplifiers in GSM/EDGE handsets where supply ripple directly modulates output spectrum. IC Role / Device Role / Timing Role: Low-noise, low-dropout voltage regulator supplying stable 2.6V to PA collector/drain rail. Use Value: 30µVRMS noise and 165mV dropout allow operation through full Li-ion discharge curve while minimizing spectral regrowth and adjacent-channel interference. |
Use Scenario: Powering precision op-amps and 16-bit SAR ADCs in portable multimeters or data loggers where supply noise degrades ENOB. IC Role / Device Role / Timing Role: Primary analog supply regulator delivering 2.6V with ultra-low broadband noise and high PSRR at DC–10kHz. Use Value: BP-pin filtering and 63dB PSRR at low frequencies reduce supply-induced offset drift and quantization noise in measurement circuits. |
| PCMCIA Card 3.3V Logic Interface | Electronic Planner Real-Time Clock Backup |
Use Scenario: Generating 2.6V auxiliary rail from 3.3V host bus to power level-shifters and interface buffers in hot-pluggable PCMCIA cards. IC Role / Device Role / Timing Role: Compact, pin-compatible LDO replacing legacy '2982 regulators in space-constrained card-edge designs. Use Value: SOT23-5 footprint and 100µA quiescent current minimize board area and standby power draw during card sleep states. |
Use Scenario: Supplying backup power to RTC and SRAM in palmtop organizers during main battery removal or deep discharge. IC Role / Device Role / Timing Role: Low-IQ, reverse-battery-protected regulator maintaining 2.6V from coin cell or supercapacitor backup source. Use Value: 10nA shutdown current and reverse-current blocking preserve backup energy for >1 year without self-discharge degradation. |
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 |
|---|---|---|---|
| MAX8878EUK26+T | Includes auto-discharge function (300Ω pull-down on OUT during shutdown); otherwise identical specs and pinout | Required where rapid output discharge prevents latch-up or back-powering of downstream circuitry during shutdown | Select MAX8878EUK26+T only if active output discharge is needed; MAX8877EUK26+T is preferred for minimal shutdown leakage |
| MCP1700T-2602E/TT | Higher 170mV dropout at 150mA; 25µVRMS noise; no reverse-battery protection; SOT23-3 package (different pinout) | Lacks BP pin and reverse-battery protection; unsuitable for battery-reversal-prone or ultra-low-noise applications | Consider only for cost-sensitive, non-battery-reversal, non-RF applications where SOT23-3 layout allows and 10mV higher dropout is acceptable |
Compared with MAX8878EUK26+T, the MAX8877EUK26+T offers lower shutdown current but no auto-discharge; compared with MCP1700T-2602E/TT, it provides superior noise performance, reverse-battery protection, and '2982-compatible SOT23-5 pinout-critical for legacy design upgrades.
Availability
MAX8877EUK26+T is available at Aetrix Electronics and suitable for cellular telephones, hand-held instruments, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX8877EUK26+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 MAX8877/MAX8878 product line was designed specifically for battery-powered portable electronics needing ultra-low-noise, low-quiescent-current regulation with robust protection features in minimal SOT23-5 form factor.
FAQ
What is the exact output voltage tolerance of the MAX8877EUK26+T over temperature?
The MAX8877EUK26+T guarantees ±1.4% output voltage accuracy over the full -40°C to +85°C operating temperature range, as confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" with conditions IOUT = 0.1mA to 120mA and VOUT ≥ 2.5V. This applies directly to the MAX8877EUK26+T's 2.6V nominal output.
Does the MAX8877EUK26+T require an external BP capacitor to meet its 30µVRMS noise specification?
Yes-the MAX8877EUK26+T achieves its specified 30µVRMS output noise (10Hz–100kHz) only when a 0.01µF ceramic capacitor is placed between the BP pin and GND. This capacitor forms a low-pass filter with the internal 200kΩ resistor; omitting it increases noise significantly, as shown in the "Output Noise vs. BP Capacitance" graph in the datasheet.
Can the MAX8877EUK26+T be used with input voltages below 2.5V?
No-the Absolute Maximum Ratings and Electrical Characteristics specify a minimum input voltage of 2.5V. Operation below 2.5V is not characterized or guaranteed; the regulator may fail to maintain regulation or exhibit increased dropout and noise. The MAX8877EUK26+T requires VIN ≥ 2.5V or VOUT + 0.5V (whichever is greater) for proper function.
Is the MAX8877EUK26+T pin-compatible with the industry-standard '2982 regulator?
Yes-the MAX8877EUK26+T uses the same SOT23-5 pinout as the industry-standard '2982 family: Pin 1 = IN, Pin 2 = GND, Pin 3 = SHDN, Pin 4 = BP, Pin 5 = OUT. This allows direct mechanical and electrical replacement in existing '2982-based PCB layouts without redesign.
What thermal derating applies to the MAX8877EUK26+T in its SOT23-5 regular package?
The MAX8877EUK26+T in the regular SOT23-5 package has a continuous power dissipation limit of 571mW at TA = +70°C, with derating of 7.1mW/°C above +70°C. Its θJB is 140°C/W, so thermal performance depends critically on GND pad copper area-designers must solder Pin 2 to a large PCB ground plane to achieve rated dissipation.
MAX8877EUK26+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- SOT-23-5
MAX8877EUK26+T FAQ
1.How can I place an order for MAX8877EUK26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EUK26+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 MAX8877EUK26+T reliable?
The price and inventory of MAX8877EUK26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EUK26+T is usually 5 days.
3.What payment methods are accepted for MAX8877EUK26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EUK26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EUK26+T?
MAX8877EUK26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EUK26+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 MAX8877EUK26+T?
For technical support, including MAX8877EUK26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EUK26+T requirements.
6.How does Aetrix verify that MAX8877EUK26+T is sourced from the original manufacturer or authorized distributors?
All MAX8877EUK26+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 MAX8877EUK26+T meets industry standards.
7.What is the process for return or replacement of MAX8877EUK26+T?
All MAX8877EUK26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EUK26+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 MAX8877EUK26+T part is unused and in its original packaging.
Return procedure for MAX8877EUK26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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