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Analog Devices Inc./Maxim Integrated MAX8860EUA27
- Part No.:
- MAX8860EUA27
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX8860EUA27.pdf
- Description:
- IC REG LINEAR 300MA
- Quantity:
- Payment:
- Shipping:
Inventory:4,272
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Product details
Overview
MAX8860EUA27 from Maxim Integrated is a low-noise, low-dropout linear regulator with fixed 2.77V output, delivering up to 300mA from 2.5V–6.5V input. It features 60µVRMS output noise, 105mV dropout at 200mA, and 120µA no-load supply current. Designed for battery-powered DSP core power and handheld instrumentation where stable low-voltage rail integrity is critical.
For engineers reviewing the MAX8860EUA27 datasheet, MAX8860EUA27 pinout, MAX8860EUA27 application, or MAX8860EUA27 equivalent, this page delivers verified technical context, exact pin functions, real-world load-transient behavior, fault-detection thresholds, and validated alternative options for fixed-output LDO selection in space-constrained portable systems.
Technical Context
The MAX8860EUA27 uses an internal P-channel MOSFET pass transistor (RDS(ON) ≈ 0.5Ω) enabling ultra-low quiescent current across load conditions and eliminating base-drive losses inherent in PNP-based regulators. Its Dual Mode™ architecture selects between fixed 2.77V output (SET = GND) and adjustable mode (1.25V–6.5V) via SET pin voltage threshold (60mV).
Fault detection monitors both regulation loss (dropout, thermal shutdown, current limit) and insufficient input-to-output differential - FAULT asserts low when VIN–VOUT falls below 130mV at 200mA load, tracking dropout voltage across temperature and load. Compensation uses a dedicated 33nF capacitor on CC pin to stabilize loop response and suppress noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.77V (±2.5% over –40°C to +85°C); guarantees ≥2.70V minimum under full load and temperature extremes. |
| Max Output Current | 300mA continuous; supports high-pulse loads in DSP cores without thermal derating in µMAX package. |
| Dropout Voltage | 105mV at 200mA; enables operation down to VIN = 2.875V while maintaining regulation - extends battery life in single-cell Li-ion systems. |
| Output Noise | 60µVRMS (10Hz–100kHz); low enough for noise-sensitive analog/RF sections powered from same rail. |
| Quiescent Current | 120µA typical at no load; remains stable across input voltage (2.5V–6.5V) and temperature - critical for standby power budgeting. |
| Shutdown Current | 10nA logic-controlled; reduces system leakage during deep sleep without external discharge paths. |
| FAULT Threshold | Detects VIN–VOUT < 130mV @ 200mA; provides early warning of impending dropout before output droop affects downstream logic. |
Pinout & Package
Package: 8-pin µMAX (2.1mm × 2.1mm, 1.1mm max height), thermally enhanced for PCB heat spreading via exposed pad (not electrically connected per datasheet).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 - OUT | Regulated output node | Two pins paralleled for lower impedance; requires 2.2µF low-ESR ceramic capacitor to GND for stability and transient response. |
| 2 - IN | Main power input | Accepts 2.5V–6.5V; bypassed with 2.2µF capacitor to GND; reverse battery protection limits reverse current to <1mA if VIN < GND. |
| 3 - GND | Analog/digital ground reference | Common return for all internal blocks; must be low-impedance connection to minimize noise coupling into error amplifier. |
| 5 - SET | Mode selection & feedback node | Connected to GND for fixed 2.77V output; >60mV triggers adjustable mode; input leakage <0.5nA preserves resistor-divider accuracy. |
| 6 - CC | Compensation node | Connects 33nF capacitor to GND; sets integrator pole to minimize load/line regulation error and suppress output noise. |
| 7 - SHDN | Logic-controlled enable | Active-low; drives low to reduce supply current to 10nA; connect to IN for always-on operation; input threshold VIL = 0.4V, VIH = 2.0V. |
| 8 - FAULT | Open-drain fault indicator | Asserts low during dropout, thermal shutdown, or current limit; requires external pull-up to OUT; sink capability 20mA. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Mode™ configuration | Single device supports fixed 2.77V output (SET = GND) or adjustable 1.25V–6.5V (external resistor divider), reducing BOM count across product variants. |
| P-channel MOSFET pass element | 0.5Ω RDS(ON) eliminates base-drive current, enabling 120µA quiescent current independent of load - extends battery runtime in always-on sensors. |
| Integrated fault detection | Monitors both regulation loss and VIN–VOUT margin; FAULT pin alerts host processor before output deviation exceeds 1%, enabling graceful system response. |
| Reverse battery protection | Blocks reverse current <1mA when VIN or SHDN falls below GND - prevents damage and thermal runaway in field-replaceable battery compartments. |
| Thermal hysteresis control | Shuts down at +170°C junction temperature and re-enables after cooling by 20°C - prevents oscillation during sustained overload while protecting die integrity. |
Applications
| Wireless Handset Baseband Power | DSP Core Supply |
|---|---|
|
Use Scenario: Powers baseband processor core in GSM/EDGE handsets operating from single-cell Li-ion (2.8V–4.2V). IC Role / Device Role / Timing Role: Low-noise, low-dropout LDO providing clean 2.77V rail for digital signal processing blocks sensitive to supply ripple. Use Value: 60µVRMS noise and 105mV dropout allow full utilization of battery voltage range down to 2.875V, extending talk time by ~12% versus higher-dropout alternatives. |
Use Scenario: Supplies voltage to fixed-point DSP core in portable medical ultrasound devices requiring stable clock domain references. IC Role / Device Role / Timing Role: Regulator for DSP I/O and memory interface; FAULT signal feeds watchdog timer to trigger safe state transition on supply degradation. Use Value: FAULT detection at 130mV VIN–VOUT margin provides 25mV headroom above actual dropout, enabling predictive brownout handling before timing violations occur. |
| PCMCIA Card Logic Rail | Hand-Held Instrument ADC Reference |
|
Use Scenario: Generates 2.77V logic supply for PCMCIA Type II cards inserted into industrial data loggers with variable bus voltage (3.3V ±10%). IC Role / Device Role / Timing Role: Isolates card logic from noisy host bus; SHDN pin synchronized to card insertion detection for zero-power standby. Use Value: 10nA shutdown current prevents parasitic drain on logger's backup coin cell during storage; µMAX footprint fits tight 54mm × 43mm card area. |
Use Scenario: Powers precision 16-bit SAR ADC in handheld multimeter where reference stability directly impacts measurement accuracy. IC Role / Device Role / Timing Role: Clean analog supply for ADC reference buffer and internal bandgap; low 60µVRMS noise minimizes code spread in DC measurements. Use Value: Output voltage tolerance (±2.5%) and <0.01%/V line regulation ensure <0.5 LSB error contribution across 2.5V–6.5V input range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS763275DBVT | 2.75V fixed output (±2%), 150mA max, 120mV dropout at 150mA, 85µA IQ, SOT-23-5 package. | Limited to 150mA; lacks FAULT indicator and reverse battery protection; smaller footprint but higher thermal resistance (θJA = 299°C/W). | Select when board space is constrained and load current ≤150mA; verify FAULT functionality is not required for system safety. |
| MCP1825-2702E/DB | 2.7V fixed output (±1.5%), 300mA max, 220mV dropout at 300mA, 85µA IQ, SOT-23-5 package. | Higher dropout reduces usable battery range; no FAULT pin or reverse battery protection; tighter initial tolerance but wider tempco. | Choose for cost-sensitive designs where 220mV dropout is acceptable and fault monitoring is handled externally. |
Compared with TPS763275DBVT and MCP1825-2702E/DB, the MAX8860EUA27 uniquely combines 300mA capability, 105mV dropout, integrated FAULT signaling, and reverse battery protection in a thermally optimized µMAX package - making it the only option among the three suitable for high-reliability, battery-critical DSP core applications demanding predictive fault awareness.
Availability
MAX8860EUA27 is available at Aetrix Electronics and suitable for wireless handset baseband power, DSP core supply, and hand-held instrument ADC reference requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across –40°C to +85°C.
Supply support for MAX8860EUA27 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 MAX8860 series was designed specifically for battery-powered portable electronics requiring ultra-low quiescent current, low-noise regulation, and intelligent fault monitoring in minimal PCB area - targeting DSP, RF, and precision analog subsystems.
FAQ
What is the guaranteed minimum output voltage for MAX8860EUA27 over temperature and load?
The MAX8860EUA27 guarantees a minimum output voltage of 2.70V across –40°C to +85°C ambient temperature and 0–300mA load current, as specified in the Electrical Characteristics table under "Output Voltage" parameter for MAX8860EUA27. This ensures reliable operation of 2.7V-tolerant logic even at end-of-battery-life conditions.
Does MAX8860EUA27 require an external capacitor on the CC pin, and what happens if it's omitted?
Yes, MAX8860EUA27 requires a 33nF capacitor connected between CC pin and GND. Omitting it degrades loop stability, increases output noise beyond 60µVRMS, worsens load-transient response (overshoot >50mV), and causes poor line regulation - potentially leading to output droop during fast input changes as shown in Typical Operating Characteristic Figure MAX8860 toc12.
Can MAX8860EUA27 be used with input voltages above 5.5V, and what design constraint applies?
Yes, MAX8860EUA27 supports input voltages up to 6.5V, but when VIN > 5.5V in preset mode (SET = GND), a minimum load current of 50µA is required to maintain regulation and stability. This is due to internal biasing constraints - omitting the minimum load may cause output voltage drift or oscillation, especially at temperature extremes.
How does the FAULT pin behave during thermal shutdown, and what external components are needed?
During thermal shutdown, the FAULT pin goes low (open-drain N-MOS active) to indicate loss of regulation. To generate a logic-level signal, a pull-up resistor from FAULT to OUT is required; a 100kΩ resistor is recommended to minimize current draw while ensuring clean logic transition. FAULT remains high-impedance during shutdown mode (SHDN = low).
Is MAX8860EUA27 pin-compatible with other MAX8860 variants like MAX8860EUA28 or MAX8860EUA30?
Yes, MAX8860EUA27 is fully pin-compatible with all other MAX8860 variants (e.g., MAX8860EUA28, MAX8860EUA30) in the 8-pin µMAX package. They share identical pinout, electrical characteristics (except output voltage), thermal specs, and functional behavior - enabling drop-in replacement across voltage variants without PCB modification.
MAX8860EUA27 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 (2.77V)
- 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
MAX8860EUA27 FAQ
1.How can I place an order for MAX8860EUA27 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8860EUA27 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 MAX8860EUA27 reliable?
The price and inventory of MAX8860EUA27 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8860EUA27 is usually 5 days.
3.What payment methods are accepted for MAX8860EUA27?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8860EUA27 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8860EUA27?
MAX8860EUA27 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8860EUA27 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 MAX8860EUA27?
For technical support, including MAX8860EUA27 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8860EUA27 requirements.
6.How does Aetrix verify that MAX8860EUA27 is sourced from the original manufacturer or authorized distributors?
All MAX8860EUA27 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 MAX8860EUA27 meets industry standards.
7.What is the process for return or replacement of MAX8860EUA27?
All MAX8860EUA27 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8860EUA27, 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 MAX8860EUA27 part is unused and in its original packaging.
Return procedure for MAX8860EUA27:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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