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Analog Devices Inc./Maxim Integrated MAX8877EUK15+T
- Part No.:
- MAX8877EUK15+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8877EUK15+T.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,391
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Product details
Overview
MAX8877EUK15+T from Maxim Integrated is a low-noise, low-dropout linear regulator with 1.5V fixed output, 150mA maximum output current, 165mV dropout at full load, 30µVRMS output noise, and 100µA operating supply current - designed for battery-powered portable electronics requiring stable low-voltage biasing.
For engineers reviewing the MAX8877EUK15+T datasheet, MAX8877EUK15+T pinout, MAX8877EUK15+T application, or MAX8877EUK15+T equivalent, key selection criteria include dropout performance at 150mA, shutdown current (10nA), reverse battery protection, thermal shutdown behavior, and SOT23-5 regular package compatibility with industry-standard '2982 footprint.
Technical Context
The MAX8877EUK15+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.
It integrates reverse battery protection limiting reverse current to 1mA, thermal shutdown at +155°C with 15°C hysteresis, and current limiting set to 160mA (min)–390mA (max). The BP pin accepts a 0.01µF ceramic capacitor to form an 80Hz low-pass filter that reduces reference noise and enables 30µVRMS output noise (10Hz–100kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1.4% over -40°C to +85°C - ensures stable core/bias rail for low-voltage logic and analog circuitry without external feedback. |
| Max Output Current | 150mA continuous - supports moderate-power RF modules, LCD bias, or sensor signal chains in handheld devices. |
| Dropout Voltage | 165mV at 150mA - allows operation down to 1.65V input, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz) with 0.01µF BP cap - meets low-noise requirements for ADC references, RF LDOs, and precision analog front-ends. |
| Quiescent Current | 100µA across load and dropout - maintains ultra-low standby power in always-on subsystems without sacrificing regulation accuracy. |
| Shutdown Current | 10nA logic-controlled - enables deep-sleep modes in portable instruments and cellular handsets with minimal battery drain. |
| Input Voltage Range | 2.5V to 6.5V - accommodates single-cell Li-ion (2.7–4.2V), dual-cell alkaline (3–6V), and regulated intermediate rails. |
Pinout & Package
MAX8877EUK15+T is housed in a 5-pin SOT23-5 regular package (JEDEC MO-178AA), with GND serving as both electrical reference and thermal path. Pin 2 (GND) must be soldered to a large PCB copper area for optimal thermal dissipation.
| 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 and thermal pad | Reference node and primary heat sink; must connect to large PCB ground plane to sustain 571mW max power dissipation at +70°C. |
| 3 SHDN | Active-low shutdown control | Logic-low (<0.4V) reduces supply current to 10nA; tied to IN for always-on operation; no auto-discharge (MAX8878 only). |
| 4 BP | Bypass for reference noise reduction | Connects to 0.01µF ceramic capacitor to reduce 1.25V reference noise; forms 80Hz low-pass filter with internal 200kΩ resistor. |
| 5 OUT | Regulated output | Delivers up to 150mA at 1.5V; requires ≥3.3µF ceramic capacitor (ESR <0.2Ω) for stability when VOUT < 2.5V. |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss, enabling constant 100µA quiescent current across all load and dropout conditions. |
| Reverse battery protection | Restricts reverse current to ≤1mA when VIN or SHDN falls below GND - prevents damage during incorrect battery insertion. |
| Thermal shutdown with hysteresis | Shuts down at +155°C junction temperature and re-enables after cooling by 15°C - provides fault-safe pulsed operation under overload. |
| 100mV output voltage increments | Factory-preset 1.5V output eliminates external resistors and layout complexity while ensuring ±1.4% accuracy over temperature. |
| '2982 pin-compatible footprint | Enables drop-in replacement of legacy regulators without PCB redesign - supports design continuity and second-source flexibility. |
Applications
| Cellular Handset Power Management | Portable Medical Sensor Bias |
|---|---|
|
Use Scenario: Supplying 1.5V bias to RF power amplifier bias circuits and low-voltage microcontroller I/O banks in GSM/PCS handsets. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering clean 1.5V rail with fast load-transient response (12mV step @ 50mA) and reverse-battery safety. Use Value: Extends talk time via 100µA quiescent current and enables safe battery swap without risk of reverse polarity damage. |
Use Scenario: Providing stable 1.5V reference and analog front-end bias for ECG/SpO₂ sensor signal conditioning in battery-powered patient monitors. IC Role / Device Role / Timing Role: Low-noise voltage source minimizing interference on high-gain instrumentation amplifiers and 16-bit ADC references. Use Value: 30µVRMS noise and ±1.4% output accuracy ensure measurement integrity without post-calibration drift compensation. |
| PCMCIA Card Core Logic Supply | Palmtop Computer Memory Interface |
|
Use Scenario: Regulating 1.5V core voltage for JEDEC-compliant PCMCIA Type II card controllers and flash memory interfaces. IC Role / Device Role / Timing Role: Compact SOT23-5 LDO meeting tight board space constraints while supporting 150mA peak current during burst writes. Use Value: 165mV dropout allows operation from 1.65V minimum input - critical for maintaining compliance during brown-out conditions on shared bus supplies. |
Use Scenario: Powering SRAM and low-voltage CPLD configuration logic in palmtop computers with single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Always-on LDO with 10nA shutdown mode enabling instant wake-from-sleep without boot-time delays. Use Value: Ultra-low shutdown current preserves battery charge over weeks of standby, while thermal protection prevents overheating during extended compute sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76315DBVR | 1.5V fixed output, 150mA, 250mV dropout at 150mA, 45µVRMS noise, 85µA IQ - higher dropout and noise than MAX8877EUK15+T. | Lacks reverse battery protection and thermal hysteresis; requires external shutdown pull-up. | Choose when cost sensitivity outweighs noise/dropout requirements and reverse polarity risk is mitigated externally. |
| MCP1700T-1502E/TT | 1.5V fixed output, 250mA, 600mV dropout at 250mA, 30µVRMS noise, 1.6µA IQ - much lower quiescent current but significantly higher dropout. | No reverse battery or thermal shutdown protection; not pin-compatible with '2982 footprint. | Prefer for ultra-low-power sensor nodes where input voltage margin exceeds 2.1V and protection features are implemented elsewhere. |
Compared with TPS76315DBVR and MCP1700T-1502E/TT, the MAX8877EUK15+T uniquely combines '2982 pin compatibility, reverse battery protection, thermal hysteresis, and best-in-class 165mV dropout at 150mA - making it optimal for space-constrained, safety-critical portable designs.
Availability
MAX8877EUK15+T is available at Aetrix Electronics and suitable for cellular telephones, PCMCIA cards, and handheld medical instruments requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for MAX8877EUK15+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 engineered specifically for battery-powered portable electronics, emphasizing ultra-low noise, minimal dropout, and robust protection features in miniature SOT23 packages.
FAQ
What is the output voltage tolerance of the MAX8877EUK15+T over temperature?
The MAX8877EUK15+T delivers 1.5V output with ±1.4% accuracy across the full -40°C to +85°C operating range, verified at 0.1mA to 120mA load currents. This specification ensures reliable operation in handheld devices exposed to ambient temperature swings without requiring external trimming or calibration.
Does the MAX8877EUK15+T include thermal shutdown protection?
Yes, the MAX8877EUK15+T incorporates thermal shutdown that activates at +155°C junction temperature and includes 15°C hysteresis. When triggered, the pass transistor turns off until the die cools sufficiently, enabling safe pulsed operation during sustained overload - a feature confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables.
Can the MAX8877EUK15+T be used with input voltages below 2.5V?
No - the MAX8877EUK15+T has a minimum input voltage rating of 2.5V per Absolute Maximum Ratings and Electrical Characteristics. Operation below this threshold is not specified, and attempting to power it from sub-2.5V sources (e.g., deeply discharged Li-ion cells) may result in regulation failure or undefined behavior.
What capacitor values are required for stable operation of the MAX8877EUK15+T?
For stable operation, the MAX8877EUK15+T requires a minimum 3.3µF ceramic output capacitor (ESR <0.2Ω) due to its 1.5V output (VOUT < 2.5V), plus a 1µF input capacitor. A 0.01µF ceramic capacitor on the BP pin is mandatory to achieve the specified 30µVRMS noise performance and enable proper reference filtering.
Is the MAX8877EUK15+T pin-compatible with the industry-standard '2982 regulator?
Yes - the MAX8877EUK15+T is explicitly designed as a pin-compatible upgrade to the industry-standard '2982 family, sharing identical SOT23-5 pinout (IN, GND, SHDN, BP, OUT) and footprint. This allows direct replacement without PCB modification, as confirmed in the General Description and Pin Configuration sections of the datasheet.
MAX8877EUK15+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):
- 1.5V
- 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
MAX8877EUK15+T FAQ
1.How can I place an order for MAX8877EUK15+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EUK15+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 MAX8877EUK15+T reliable?
The price and inventory of MAX8877EUK15+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EUK15+T is usually 5 days.
3.What payment methods are accepted for MAX8877EUK15+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EUK15+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EUK15+T?
MAX8877EUK15+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EUK15+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 MAX8877EUK15+T?
For technical support, including MAX8877EUK15+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EUK15+T requirements.
6.How does Aetrix verify that MAX8877EUK15+T is sourced from the original manufacturer or authorized distributors?
All MAX8877EUK15+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 MAX8877EUK15+T meets industry standards.
7.What is the process for return or replacement of MAX8877EUK15+T?
All MAX8877EUK15+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EUK15+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 MAX8877EUK15+T part is unused and in its original packaging.
Return procedure for MAX8877EUK15+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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