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Analog Devices Inc./Maxim Integrated MAX8860EUA33
- Part No.:
- MAX8860EUA33
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX8860EUA33.pdf
- Description:
- IC REG LINEAR 300MA
- Quantity:
- Payment:
- Shipping:
Inventory:4,887
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Product details
Overview
MAX8860EUA33 from Maxim Integrated is a fixed-output, low-noise, low-dropout linear regulator delivering 3.3V at up to 300mA from a 2.5V–6.5V input. It features 60µVRMS output noise, 105mV dropout at 200mA, 120µA no-load supply current, and reverse battery protection. Designed for space-constrained portable electronics, it powers DSP cores and handheld instrument logic rails.
For engineers reviewing the MAX8860EUA33 datasheet, MAX8860EUA33 pinout, MAX8860EUA33 application, or MAX8860EUA33 equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters across temperature, and real-world design implications for battery-powered LDO selection.
Technical Context
The MAX8860EUA33 uses an internal P-channel MOSFET pass transistor (RDS(ON) ≈ 0.5Ω) to achieve low dropout and eliminate base-drive current loss. Its Dual Mode™ architecture selects between fixed 3.3V output (SET = GND) and adjustable mode (1.25V–6.5V) via SET pin voltage threshold (60mV).
Regulation relies on a 1.25V bandgap reference, error amplifier, and external 33nF compensation capacitor (CC pin) to stabilize transient response and minimize load/line regulation error. Fault detection monitors input-to-output differential voltage (130mV threshold at 200mA) and asserts open-drain FAULT when regulation is lost.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.30V (±3% over –40°C to +85°C); enables direct replacement of 3.3V logic supplies without external resistors. |
| Max Output Current | 300mA continuous; supports moderate-power digital ICs like DSPs and microcontrollers in portable systems. |
| Dropout Voltage | 105mV at 200mA; allows operation down to VIN = 3.405V while maintaining 3.3V output - critical for Li-ion end-of-discharge use. |
| Output Noise | 60µVRMS (10Hz–100kHz); ensures clean power for noise-sensitive analog circuitry and RF front-ends. |
| Quiescent Current | 120µA typical at no load; extends battery life in always-on or low-duty-cycle applications. |
| Shutdown Current | 10nA logic-controlled; reduces system standby power to negligible levels during sleep modes. |
| Fault Detection | Open-drain FAULT pin asserts low when VIN–VOUT < 130mV (at 200mA) or during thermal shutdown/current limit - enables host-system fault logging. |
Pinout & Package
MAX8860EUA33 is housed in an 8-pin µMAX package (2.1mm × 2.1mm, 1.1mm max height), optimized for high-density PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 - OUT | Regulated output | Delivers 3.3V; requires 2.2µF low-ESR ceramic capacitor to GND for stability and transient response. |
| 2 - IN | Input supply | Accepts 2.5V–6.5V; bypass with 2.2µF capacitor to GND to suppress input ripple and improve PSRR. |
| 3 - GND | Power ground | Common return path for IN, OUT, and internal circuitry; must be low-impedance connection to minimize noise coupling. |
| 5 - SET | Mode select / feedback | Grounded for fixed 3.3V output; floating or externally biased above 60mV enables adjustable mode - critical for correct operation. |
| 6 - CC | Compensation node | Connects 33nF capacitor to GND to set integrator pole; determines loop stability, load transient recovery, and noise filtering. |
| 7 - SHDN | Logic enable | Driven low (≤0.4V) to enter 10nA shutdown; tied to IN for active operation - enables hardware-controlled power sequencing. |
| 8 - FAULT | Open-drain fault indicator | Asserts low during dropout, thermal shutdown, or overload; requires external pull-up (e.g., to OUT) for active-high signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ configuration | Single device supports both fixed 3.3V output (SET = GND) and adjustable 1.25V–6.5V range - reduces BOM count and simplifies design reuse. |
| P-channel MOSFET pass element | Eliminates base-drive current; maintains 120µA quiescent current across all load conditions including dropout - maximizes battery runtime. |
| Reverse battery protection | Limits reverse current to <1mA if VIN or SHDN falls below GND - prevents damage from misinserted batteries in consumer handhelds. |
| Integrated fault detection | Monitors VIN–VOUT differential and asserts FAULT before regulation fails - enables predictive system-level power management. |
| Thermal shutdown with hysteresis | Shuts down at +170°C junction temperature and re-enables after ~20°C cooldown - prevents latch-up during sustained overload. |
Applications
| Wireless Handsets | DSP Core Power |
|---|---|
Use Scenario: Powering baseband processor and RF transceiver subsystems in GSM/UMTS handsets with single-cell Li-ion input. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying noise-sensitive analog and mixed-signal blocks. Use Value: 60µVRMS noise and 105mV dropout extend usable battery voltage range and prevent RF desense during transmit bursts. |
Use Scenario: Delivering stable 3.3V to TI C5000 or Analog Devices SHARC DSP cores in portable audio analyzers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source for DSP I/O and memory interfaces. Use Value: 67dB PSRR at low frequencies suppresses switching noise from adjacent DC/DC converters, preserving signal integrity. |
| PCMCIA Cards | Hand-Held Instruments |
Use Scenario: Regulating 3.3V for PCMCIA Type II card logic in laptop expansion slots with variable input from host supply. IC Role / Device Role / Timing Role: Compact, thermally robust LDO meeting PCMCIA power envelope and hot-swap requirements. Use Value: µMAX package fits tight card-edge constraints; thermal shutdown protects against slot overheating during extended operation. |
Use Scenario: Supplying 3.3V to microcontroller, display driver, and sensor interface in battery-operated multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Main system rail regulator with fault reporting for self-diagnostics and low-power sleep mode control. Use Value: 10nA shutdown current enables multi-year battery life in storage mode; FAULT pin alerts firmware of input undervoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333DBVR | Higher 250mV dropout at 300mA; 170µA quiescent current; no reverse battery protection. | Requires higher minimum input voltage (≥3.55V); less suitable for deep-discharge Li-ion systems. | Choose when cost sensitivity outweighs ultra-low dropout and reverse polarity robustness. |
| MCP1700T-3302E/MB | Lower 250mA max output; 2.0µA quiescent current; no FAULT pin or thermal hysteresis. | Targeted at ultra-low-power MCU peripherals, not DSP or RF loads requiring 300mA. | Prefer for sub-100mA applications where nanoscale IQ dominates design priority. |
Compared with TPS76333DBVR and MCP1700T-3302E/MB, MAX8860EUA33 uniquely combines 300mA capability, 105mV dropout, reverse battery protection, and integrated fault reporting - making it optimal for compact, battery-critical systems demanding reliability and headroom.
Availability
MAX8860EUA33 is available at Aetrix Electronics and suitable for wireless handsets, DSP core power, and hand-held instruments requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across industrial temperature range.
Supply support for MAX8860EUA33 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX8860 series was developed specifically for battery-powered portable electronics requiring low-noise, low-dropout regulation with fault visibility and reverse-polarity resilience - targeting handheld instrumentation, wireless infrastructure, and embedded computing.
FAQ
What is the guaranteed output voltage tolerance for MAX8860EUA33 over temperature?
The MAX8860EUA33 guarantees 3.3V output within ±3% over the full –40°C to +85°C operating range, with typical accuracy of ±1.5% at +25°C. This is confirmed by electrical characteristics tables showing min/max values of 3.21V to 3.38V across temperature, enabling reliable logic-level compatibility in portable systems.
Can MAX8860EUA33 operate with input voltages below 2.5V?
No - MAX8860EUA33 has an absolute minimum input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics. Operation below 2.5V violates specification and may result in loss of regulation, unpredictable FAULT behavior, or failure to maintain 3.3V output. The device is designed for single-cell Li-ion (2.7V–4.2V) and regulated 3.3V/5V supply inputs.
Does MAX8860EUA33 require an external resistor network to deliver 3.3V output?
No - MAX8860EUA33 is factory-configured for fixed 3.3V output. Simply connect the SET pin to GND to activate preset mode. No external resistors are needed, unlike adjustable LDOs. This eliminates component count, layout area, and tolerance-induced output drift in production designs.
What is the purpose of the CC pin on MAX8860EUA33, and what capacitor value is required?
CC is the compensation capacitor terminal. A 33nF capacitor must be connected from CC to GND to stabilize the control loop, minimize load- and line-regulation errors, and reduce output noise. Using incorrect values or omitting this capacitor risks oscillation, poor transient response, or degraded PSRR - as verified in Typical Operating Characteristics graphs.
How does the FAULT pin behave during thermal shutdown?
During thermal shutdown, the FAULT pin goes low to indicate loss of regulation - consistent with its behavior during dropout or current limit. The pin remains low until junction temperature cools by ~20°C and regulation resumes. FAULT is open-drain, so a pull-up resistor (e.g., 100kΩ to OUT) is required to generate a valid logic-high level when regulation is active.
MAX8860EUA33 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.25V (3.3V)
- Voltage - Output (Max):
- 6.5V
- Voltage Dropout (Max):
- 0.155V @ 300mA (Typ)
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 270 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Fault Output
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX8860EUA33 FAQ
1.How can I place an order for MAX8860EUA33 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8860EUA33 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 MAX8860EUA33 reliable?
The price and inventory of MAX8860EUA33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8860EUA33 is usually 5 days.
3.What payment methods are accepted for MAX8860EUA33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8860EUA33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8860EUA33?
MAX8860EUA33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8860EUA33 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 MAX8860EUA33?
For technical support, including MAX8860EUA33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8860EUA33 requirements.
6.How does Aetrix verify that MAX8860EUA33 is sourced from the original manufacturer or authorized distributors?
All MAX8860EUA33 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 MAX8860EUA33 meets industry standards.
7.What is the process for return or replacement of MAX8860EUA33?
All MAX8860EUA33 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8860EUA33, 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 MAX8860EUA33 part is unused and in its original packaging.
Return procedure for MAX8860EUA33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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