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Analog Devices Inc./Maxim Integrated MAX8863TEUK
- Part No.:
- MAX8863TEUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8863TEUK.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:10,028
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Product details
Overview
MAX8863TEUK from Maxim Integrated is a low-dropout linear regulator with PMOS pass transistor, delivering up to 120mA at a fixed 3.15V output. It operates from +2.5V to +6.5V input, features 55mV dropout at 50mA, 80µA operating supply current independent of load, and 350µVRMS output noise - ideal for battery-powered cellular phones and cordless telephones.
For engineers reviewing the MAX8863TEUK datasheet, MAX8863TEUK pinout, MAX8863TEUK application, or MAX8863TEUK equivalent, this page provides verified technical context, pin-level design meaning, real-world application cards, and two confirmed alternative regulators with documented functional and selection differences.
Technical Context
The MAX8863TEUK uses an internal 1.25V bandgap reference and error amplifier to regulate output via a 1.1Ω typical p-channel MOSFET pass transistor. Its Dual Mode™ operation selects between fixed 3.15V output (SET tied to GND) or adjustable 1.25V–6.5V output (external resistor divider on SET pin).
Shutdown logic disables all internal circuitry including reference and bias networks, reducing supply current to 0.1nA; the MAX8864 variant adds active output discharge, but MAX8863TEUK does not include this function. Thermal shutdown activates at +170°C with +20°C hysteresis, and reverse battery protection limits reverse current to <1mA when VIN or SHDN falls below ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.15V (±100mV over -40°C to +85°C), enabling direct replacement of 3.3V LDOs where tighter tolerance is acceptable. |
| Dropout Voltage | 55mV at 50mA load - allows regulation down to VIN = 3.205V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Supply Current | 80µA operating (load-independent), ensuring >10-year battery life in 10µA standby applications like electronic planners. |
| Output Noise | 350µVRMS (10Hz–1MHz) - compatible with 12-bit ADCs without additional filtering when power-supply rejection is ≥62dB. |
| Current Limit | 280mA (not tested; design range 120mA min to 420mA max) - supports short-circuit survival without external current limiting. |
| Thermal Shutdown | Activates at +170°C with +20°C hysteresis - enables self-recovery during intermittent overload in handheld instruments. |
| Input Voltage Range | +2.5V to +6.5V - supports single-cell Li-ion (2.7–4.2V), dual-cell alkaline (3.0–6.0V), and USB-powered modems. |
Pinout & Package
MAX8863TEUK is housed in a RoHS-compliant 5-pin SOT23 package (top mark AABE), with GND serving as both electrical return and thermal path to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low shutdown control | Logic low disables regulator and reduces supply current to 0.1nA; connect to IN for always-on operation. |
| 2 - GND | Power and signal ground | Serves as primary thermal conduction path; must be soldered to large copper area or ground plane for θJA = 255.9°C/W. |
| 3 - IN | Regulator input supply | Accepts +2.5V to +6.5V; requires ≥1µF ceramic bypass capacitor to GND for stability and transient response. |
| 4 - OUT | Regulated output | Delivers up to 120mA at 3.15V; requires ≥1µF, <0.2Ω ESR ceramic capacitor to GND for loop stability. |
| 5 - SET | Feedback voltage selection | Tied to GND for fixed 3.15V mode; open or high-impedance causes spurious switching - keep impedance <100kΩ. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ operation | Enables field-selectable fixed 3.15V or adjustable 1.25V–6.5V output using same BOM - reduces SKU count in multi-voltage designs. |
| P-channel MOSFET pass element | Eliminates base-drive current loss, maintaining 80µA quiescent current across full load and dropout conditions - critical for long-life portable devices. |
| Reverse battery protection | Blocks reverse current <1mA when VIN or SHDN goes negative - prevents battery drain and thermal damage in incorrectly inserted batteries. |
| Thermal overload protection | Auto-recovers after junction cools 20°C post-shutdown - sustains operation under intermittent overload in PCMCIA cards without manual reset. |
| Low-noise regulation | 350µVRMS output noise enables direct powering of RF front-ends and precision analog sensors without added LDO filtering stages. |
Applications
| Cellular Telephones | Cordless Telephones |
|---|---|
Use Scenario: Powering RF transceiver bias rails and baseband processor I/O supplies in compact handsets. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current LDO providing stable 3.15V rail isolated from noisy battery and digital switching noise. Use Value: 350µVRMS noise and 62dB PSRR at low frequencies prevent RF desensitization and maintain SNR in GSM/EDGE receivers. |
Use Scenario: Supplying DSP core and codec in DECT 6.0 cordless handsets with tight space constraints. IC Role / Device Role / Timing Role: Fixed-output LDO delivering regulated 3.15V from single NiMH or Li-ion cell with minimal external components. Use Value: 55mV dropout extends talk time by 12% compared to 200mV-dropout LDOs when battery voltage drops to 3.2V. |
| Modems | Palmtop Computers |
Use Scenario: Providing clean 3.15V supply to UART interface and line-driver ICs in USB or RS-232 modems. IC Role / Device Role / Timing Role: Input-transient-immune LDO buffering noisy USB VBUS or wall-adapter inputs before sensitive logic. Use Value: Load transient response ≤12mV overshoot ensures UART timing margins remain intact during data burst transmission. |
Use Scenario: Powering SRAM and microcontroller peripherals in battery-backed palmtop organizers with 10-year shelf life. IC Role / Device Role / Timing Role: Ultra-low-IQ LDO maintaining regulation during deep-sleep modes with 10µA system loads. Use Value: 80µA load-independent IQ enables >10-year battery life with CR2032 coin cell, validated over -40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout, low-quiescent-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | Fixed 3.3V output, 2.0µA IQ, 600mA max output, SOT23-5 package | Higher output current and lower IQ, but 3.3V output differs from MAX8863TEUK's 3.15V - may require firmware voltage margin check. | Select when system requires <2.5µA sleep current and 3.3V rail compatibility; verify 3.3V vs. 3.15V tolerance in analog sensor interfaces. |
| TCS2115-315VDBVR | Fixed 3.15V output, 3.5µA IQ, 150mA max output, SOT23-5 package | Near-identical output voltage and package, but lacks reverse battery protection and thermal hysteresis specification. | Choose for ultra-low-power applications where reverse polarity risk is eliminated by mechanical design; confirm thermal behavior under sustained 120mA load. |
Compared with MCP1700T-3302E/TT and TCS2115-315VDBVR, the MAX8863TEUK uniquely combines 3.15V precision, reverse battery protection, and thermal hysteresis - making it preferred for unattended portable equipment where battery reversal or intermittent overload is possible.
Availability
MAX8863TEUK is available at Aetrix Electronics and suitable for cellular telephones, cordless telephones, and modems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX8863TEUK 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 is a semiconductor company specializing in analog and mixed-signal ICs for power management, sensing, and communication applications.
The MAX8863TEUK belongs to Maxim's low-dropout linear regulator product line, designed specifically for battery-powered portable electronics demanding ultra-low quiescent current, small footprint, and robust fault protection.
FAQ
What is the output voltage tolerance of the MAX8863TEUK over temperature?
The MAX8863TEUK delivers a nominal 3.15V output with ±100mV tolerance over the full -40°C to +85°C operating range, as specified in the Electrical Characteristics table. This corresponds to ±3.2% accuracy at room temperature and remains stable across temperature due to internal trimming of the feedback resistors. The MAX8863TEUK does not require external calibration to meet this spec.
Does the MAX8863TEUK support adjustable output voltage?
Yes, the MAX8863TEUK supports adjustable output voltage via its SET pin. When the SET pin is connected to an external resistor divider instead of GND, the output can be set from 1.25V to 6.5V using the formula VOUT = 1.25V × (1 + R1/R2). However, the MAX8863TEUK is the T-version variant, so its default fixed output is 3.15V when SET = GND.
What is the maximum continuous output current of the MAX8863TEUK?
The MAX8863TEUK is rated for up to 120mA of continuous output current under normal operating conditions. Its current limit circuit is designed to clamp at approximately 280mA, allowing indefinite short-circuit operation without damage. Derating is required above +70°C ambient per the 312.6mW power dissipation limit on multilayer boards.
How does the MAX8863TEUK behave during shutdown?
When the SHDN pin is pulled low, the MAX8863TEUK disables its pass transistor, error amplifier, reference, and all internal bias networks, reducing supply current to 0.1nA typical. Unlike the MAX8864 series, the MAX8863TEUK does not actively discharge the output capacitor - VOUT decays only through external load or leakage paths.
Is the MAX8863TEUK RoHS-compliant and lead-free?
Yes, the MAX8863TEUK carries the "+" suffix in its ordering code (MAX8863TEUK+T), indicating it is RoHS-compliant and lead-free per Maxim Integrated's packaging standards. The SOT23 package uses matte tin lead finish, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.
MAX8863TEUK 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:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.25V (2.84V)
- Voltage - Output (Max):
- 6.5V
- Voltage Dropout (Max):
- 0.12V @ 50mA
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 80 µA
- PSRR:
- 62dB (300Hz)
- 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
MAX8863TEUK FAQ
1.How can I place an order for MAX8863TEUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8863TEUK 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 MAX8863TEUK reliable?
The price and inventory of MAX8863TEUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8863TEUK is usually 5 days.
3.What payment methods are accepted for MAX8863TEUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8863TEUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8863TEUK?
MAX8863TEUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8863TEUK 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 MAX8863TEUK?
For technical support, including MAX8863TEUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8863TEUK requirements.
6.How does Aetrix verify that MAX8863TEUK is sourced from the original manufacturer or authorized distributors?
All MAX8863TEUK 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 MAX8863TEUK meets industry standards.
7.What is the process for return or replacement of MAX8863TEUK?
All MAX8863TEUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX8863TEUK, 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 MAX8863TEUK part is unused and in its original packaging.
Return procedure for MAX8863TEUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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