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Analog Devices Inc./Maxim Integrated MAX8511EXK26+
- Part No.:
- MAX8511EXK26+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK26+.pdf
- Description:
- IC REG LINEAR 2.6V 120MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,547
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Product details
Overview
MAX8511EXK26+ from Maxim Integrated is a 2.6V fixed-output, ultra-low-noise, low-dropout linear regulator with P-channel MOSFET pass element, delivering up to 120mA output current, 120mV dropout at full load, 40μA ground current, and stable operation with only 1μF ceramic output capacitance. It serves as a precision power supply for noise-sensitive analog and RF circuitry in portable battery-powered systems.
For engineers reviewing the MAX8511EXK26+ datasheet, MAX8511EXK26+ pinout, MAX8511EXK26+ application, or MAX8511EXK26+ equivalent, key selection criteria include its 2.6V preset output, SC70-5 package footprint, absence of bypass capacitor requirement, 72dB PSRR at 1kHz, and guaranteed thermal/overcurrent protection - all critical for compact, low-power, high-PSRR LDO deployments.
Technical Context
The MAX8511EXK26+ uses an internal 1.225V bandgap reference and error amplifier to regulate output against load and line variations, with shutdown logic disabling the reference, amplifier, and gate driver to achieve sub-1μA quiescent current. Its P-channel MOSFET pass transistor (typ. 1Ω RDS(ON)) eliminates base-drive current, enabling consistent 40μA ground current across light loads and dropout conditions.
No BP pin is present - unlike the MAX8510 - so noise reduction relies solely on inherent architecture and external 1μF COUT; PSRR is 72dB at 1kHz and 46dB at 100kHz, and output voltage accuracy is ±2% over 100μA–80mA load at +25°C. Thermal shutdown activates at +160°C with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6V ±2% (100μA–80mA, +25°C); enables direct replacement of 2.6V logic rails without feedback network design. |
| Max Output Current | 120mA guaranteed - supports moderate-current analog sensors, RF front-ends, or microcontroller I/O domains. |
| Dropout Voltage | 135mV at 120mA (for 2.5V ≤ VOUT < 3V) - allows operation down to VIN = 2.735V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Ground Current | 40μA typical at light load - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up receivers. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz - suppresses switching noise from adjacent DC-DC converters feeding mixed-signal SoCs. |
| Input Voltage Range | 2V to 6V - compatible with 2-cell alkaline, single-cell Li-ion (with protection), or regulated 3.3V/5V system rails. |
| Thermal Shutdown | Activates at +160°C with 10°C hysteresis - provides autonomous fault recovery during sustained overload or poor PCB thermal layout. |
Pinout & Package
MAX8511EXK26+ is housed in a RoHS-compliant 5-pin SC70 package (2.0mm × 1.25mm × 0.95mm height), with exposed pad omitted - thermal path relies on GND pin connection to board copper. Pin 1 is IN, Pin 2 is GND, Pin 3 is SHDN, Pin 4 is NC (not internally connected), and Pin 5 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Unregulated input supply | Accepts 2V–6V input; requires ≥1μF ceramic capacitor to GND for stability and transient suppression. |
| 2 - GND | Ground reference and thermal path | Primary return for load current and regulator control circuitry; must connect to low-impedance ground plane for thermal performance. |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.4V to disable regulator (IQ < 1μA); tie to IN for always-on operation; logic-high threshold ≥1.5V. |
| 4 - NC | No connection | Not bonded or connected internally; leave unconnected on PCB - no routing or soldering required. |
| 5 - OUT | Regulated 2.6V output | Delivers up to 120mA; bypassed with ≥1μF ceramic capacitor to GND; high-impedance when SHDN is asserted. |
Key Features
| Feature | Design Value |
|---|---|
| No bypass capacitor required | Eliminates BP pin and external 10nF capacitor - reduces BOM count and PCB area vs. MAX8510, ideal for space-constrained wearables. |
| Stable with 1μF ceramic output cap | Enables use of small, low-ESR X5R/X7R MLCCs across full temperature range - avoids larger capacitors or tantalum alternatives. |
| Ultra-low ground current | 40μA typical at light load ensures >1-year battery life in coin-cell-powered IoT sensors with periodic wake-up cycles. |
| Integrated protection | Current limit (130–300mA) and thermal shutdown (+160°C) prevent damage during short-circuit or ambient overheating - no external components needed. |
| High PSRR at audio frequencies | 72dB rejection at 1kHz suppresses ripple from buck converter switching harmonics, preserving SNR in audio DACs or ADC references. |
Applications
| Bluetooth Audio Transceivers | Digital Camera Image Sensors |
|---|---|
Use Scenario: Powering 2.6V analog front-end and RF synthesizer in Bluetooth earbud transceivers. IC Role / Device Role / Timing Role: Low-noise LDO supplying clean bias to VCOs and LNA stages, rejecting noise from shared 3.3V DC-DC rail. Use Value: 72dB PSRR at 1kHz prevents switching artifacts from modulating RF carrier, maintaining EVM compliance under dynamic load. |
Use Scenario: Providing regulated 2.6V to CMOS image sensor analog core and column ADC drivers. IC Role / Device Role / Timing Role: Precision voltage source for sensor pixel bias and analog signal chain, minimizing fixed-pattern noise. Use Value: 40μA ground current extends runtime during preview mode; 120mV dropout enables operation until battery reaches 2.735V. |
| Portable Medical Pulse Oximeters | Industrial Handheld Scanners |
Use Scenario: Supplying 2.6V to photodiode transimpedance amplifier and LED driver in battery-operated oximeters. IC Role / Device Role / Timing Role: Ultra-low-noise power rail ensuring minimal baseline drift in weak optical current measurements. Use Value: Absence of BP capacitor simplifies layout near sensitive analog inputs; 11μV RMS noise (MAX8510) not applicable - MAX8511 achieves 230μV RMS, still sufficient for 12-bit resolution. |
Use Scenario: Powering 2.6V logic interface between barcode scanner ASIC and host MCU in rugged handheld terminals. IC Role / Device Role / Timing Role: Robust local regulator handling load transients from laser diode pulsing and motor actuation. Use Value: Guaranteed 120mA output and thermal shutdown protect against momentary shorts during connector mating or ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B262MR-G | 2.6V fixed, 150mA, 120mV dropout, 25μA IQ, SOT-25 package (larger than SC70) | Lacks thermal shutdown; lower PSRR (60dB @ 1kHz); requires 2.2μF output cap for stability | Choose for lower quiescent current where thermal protection is handled externally and board space permits SOT-25. |
| Analog Devices ADP160ACBZ-2.6-R7 | 2.6V fixed, 150mA, 195mV dropout @ 150mA, 1.4μA IQ, 5-ball WLCSP | Higher dropout limits battery end-of-life; no integrated current limit; smaller WLCSP footprint but requires reflow-compatible layout | Choose for ultra-low IQ in always-on sensing nodes where dropout margin is acceptable and WLCSP assembly is available. |
Compared with MAX8511EXK26+, the XC6219B262MR-G offers lower ground current but sacrifices protection and PSRR, while the ADP160ACBZ-2.6-R7 achieves nanoscale IQ at the cost of higher dropout and no current limiting - making MAX8511EXK26+ optimal for balanced performance in compact, protected, mid-current portable designs.
Availability
MAX8511EXK26+ is available at Aetrix Electronics and suitable for Bluetooth accessories, digital imaging modules, portable medical diagnostics, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8511EXK26+ 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 MAX8510/MAX8511/MAX8512 family was designed specifically for space-constrained, battery-powered devices demanding ultra-low noise, high PSRR, and minimal external components - targeting cellular handsets, PDAs, and portable RF equipment.
FAQ
What is the output voltage tolerance of MAX8511EXK26+ over temperature and load?
The MAX8511EXK26+ guarantees ±3% output voltage accuracy over full load (100μA to 80mA) and operating temperature (-40°C to +85°C). At +25°C and 1mA load, accuracy tightens to ±1%. This ensures reliable 2.6V rail integrity for logic interfaces and analog circuits across environmental extremes without external trimming.
Does MAX8511EXK26+ require an external bypass capacitor on the BP pin?
No - MAX8511EXK26+ does not include a BP (bypass) pin. Unlike the MAX8510, it achieves its specified noise performance (230μV RMS, 100Hz–100kHz) using internal architecture alone. The pinout omits BP entirely, simplifying layout and reducing component count compared to MAX8510 variants.
What is the maximum allowable input voltage for MAX8511EXK26+?
The absolute maximum input voltage for MAX8511EXK26+ is +7V (IN to GND), but the recommended operating range is 2V to 6V. Exceeding 6V risks exceeding junction temperature limits under load, especially in the SC70 package; sustained operation above 6V is not characterized and may compromise reliability or parametric performance.
How does MAX8511EXK26+ behave during shutdown?
When SHDN is pulled low (<0.4V), MAX8511EXK26+ disables its voltage reference, error amplifier, and gate driver, placing the OUT pin in high-impedance state with total supply current dropping below 1μA. The device exits shutdown in ≤300μs after SHDN rises above 1.5V, with output settling to 2.6V within specification.
Can MAX8511EXK26+ be used with ceramic capacitors smaller than 1μF?
No - MAX8511EXK26+ is characterized and guaranteed stable only with ≥1μF ceramic output capacitance (X5R/X7R dielectric). Using smaller values risks oscillation or degraded transient response. Input capacitance also requires ≥1μF ceramic; both values are minimums validated across temperature and load per the datasheet stability region plot.
MAX8511EXK26+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.135V @ 120mA (Typ)
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 72dB ~ 46dB (1kHz ~ 100kHz)
- Control Features:
- Shutdown
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX8511EXK26+ FAQ
1.How can I place an order for MAX8511EXK26+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK26+ 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 MAX8511EXK26+ reliable?
The price and inventory of MAX8511EXK26+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK26+ is usually 5 days.
3.What payment methods are accepted for MAX8511EXK26+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK26+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK26+?
MAX8511EXK26+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK26+ 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 MAX8511EXK26+?
For technical support, including MAX8511EXK26+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK26+ requirements.
6.How does Aetrix verify that MAX8511EXK26+ is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK26+ 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 MAX8511EXK26+ meets industry standards.
7.What is the process for return or replacement of MAX8511EXK26+?
All MAX8511EXK26+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK26+, 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 MAX8511EXK26+ part is unused and in its original packaging.
Return procedure for MAX8511EXK26+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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