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Analog Devices Inc./Maxim Integrated MAX8841ELT26+
- Part No.:
- MAX8841ELT26+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WFDFN
- Datasheet:
-
MAX8841ELT26+.pdf
- Description:
- ULTRA-LOW-NOISE, HIGH PSRR, LOW-
- Quantity:
- Payment:
- Shipping:
Inventory:1,949
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Product details
Overview
MAX8841ELT26+ from Maxim Integrated is a preset 2.6V, ultra-low-noise, low-dropout linear regulator delivering up to 150mA output current with 120mV dropout at 120mA load, 40µA ground current, and stable operation using only 1µF ceramic input/output capacitors. It targets noise-sensitive analog rails in portable RF and audio subsystems.
For engineers reviewing the MAX8841ELT26+ datasheet, MAX8841ELT26+ pinout, MAX8841ELT26+ application, or MAX8841ELT26+ equivalent, key selection criteria include guaranteed 2.6V output accuracy (±3%), absence of bypass capacitor requirement, 72dB PSRR at 1kHz, thermal/overcurrent protection, and µDFN-6 (1.5mm × 1.0mm) footprint compatibility with space-constrained battery-powered designs.
Technical Context
The MAX8841ELT26+ uses a p-channel MOSFET pass transistor (typ. 1Ω RDS(ON)) enabling low quiescent current and no base-drive loss-critical for battery longevity. Its bandgap reference (1.225V) feeds an error amplifier that controls gate drive to maintain regulation without external feedback components.
Unlike the MAX8840 (which requires BP capacitor for noise reduction), the MAX8841ELT26+ omits the BP pin and achieves simplified layout by eliminating the bypass cap-reducing PCB area while retaining 230µVRMS output noise (100Hz–100kHz) and robust transient response under 50mA load steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6V ±3% over -40°C to +85°C - ensures stable bias for 2.5V–2.7V analog circuits without trimming. |
| Max Output Current | 150mA guaranteed minimum - supports moderate-power RF ICs or dual-core microcontrollers. |
| Dropout Voltage | 120mV at 120mA load - enables operation down to VIN = 2.72V, extending usable battery life in single-cell Li-ion systems. |
| Ground Current | 40µA typical at light load - minimizes standby power loss in always-on sensor nodes. |
| PSRR | 72dB at 1kHz - suppresses switching noise from DC-DC converters feeding adjacent digital blocks. |
| Output Noise | 230µVRMS (100Hz–100kHz) - suitable for low-noise op-amp supplies and ADC reference buffers. |
| Shutdown Current | <1µA - enables deep-sleep modes in portable devices without compromising wake-up latency. |
Pinout & Package
MAX8841ELT26+ is housed in a 6-pin µDFN package (1.5mm × 1.0mm × 0.8mm) with exposed thermal pad (GND-connected). The package is RoHS-compliant and lead-free ("+" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Unregulated input supply | Accepts 2V–6V input; must be decoupled with ≥1µF ceramic capacitor close to pin. |
| 2 GND | Ground reference and thermal path | Electrical return and primary heat dissipation path; requires large copper pour or thermal via to internal plane. |
| 3 SHDN | Active-low shutdown control | Pull ≤0.4V to disable regulator; draws <0.01µA; connect to IN for always-on operation. |
| 4 N.C. | No internal connection | Not bonded; must remain unconnected and unstubbed on PCB to avoid parasitic coupling. |
| 5 N.C. | No internal connection | Identical to Pin 4 - unused; leave floating per datasheet guidance. |
| 6 OUT | Regulated 2.6V output | Delivers up to 150mA; bypassed with ≥1µF ceramic capacitor directly to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| No bypass capacitor required | Eliminates BP pin and external 10nF capacitor - reduces BOM count and saves 0.5mm² PCB area vs. MAX8840 variants. |
| Stable with 1µF ceramic capacitors | Enables use of low-cost, small-footprint X5R/X7R MLCCs across full temperature range - no derating needed. |
| Thermal and overcurrent protection | Shuts down at 160°C junction temp with 10°C hysteresis; limits output to 150–300mA - prevents damage during short-circuit events. |
| Low 40µA ground current | Maintains high efficiency at light loads (e.g., sleep mode), extending battery runtime in intermittent-use IoT sensors. |
| Fast shutdown exit delay | 300µs typical - supports rapid wake-up in responsive portable systems without voltage droop. |
Applications
| Bluetooth Audio Transceivers | Digital Camera Image Sensors |
|---|---|
|
Use Scenario: Powering RF front-end and codec sections in Bluetooth headsets and speaker modules. IC Role / Device Role / Timing Role: Low-noise 2.6V supply for VCO bias, LNA, and DAC reference rails. Use Value: 230µVRMS noise and 72dB PSRR prevent AM/FM interference and spurious tones in audio output. |
Use Scenario: Supplying CMOS image sensor analog core and column ADC drivers. IC Role / Device Role / Timing Role: Clean, stable 2.6V rail for pixel readout circuitry and analog signal chain. Use Value: 120mV dropout allows operation through full Li-ion discharge curve (4.2V → 2.7V), preserving dynamic range. |
| Portable Medical Pulse Oximeters | Wearable Biopotential Amplifiers |
|
Use Scenario: Biasing red/IR LED drivers and photodiode transimpedance amplifiers. IC Role / Device Role / Timing Role: Precision 2.6V source for LED current control and analog front-end gain stages. Use Value: ±3% output accuracy ensures consistent LED intensity and calibrated SpO₂ measurements across temperature. |
Use Scenario: Powering ECG/EEG instrumentation amplifiers and anti-aliasing filters. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply for high-gain, low-frequency biopotential acquisition. Use Value: 40µA ground current extends battery life in multi-day continuous monitoring wearables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8840ELT26+ | Same 2.6V output but includes BP pin requiring 10nF capacitor; lower 11µVRMS noise. | Better suited for ultra-low-noise RF synthesizers where 11µVRMS is mandatory. | Select MAX8840ELT26+ only if noise budget demands sub-25µVRMS; otherwise MAX8841ELT26+ saves BOM cost and layout space. |
| Torex XC6219B262MR-G | 2.6V fixed LDO; 150mA rating; 250mV dropout at 100mA; 45µA quiescent current; no thermal shutdown. | Lacks thermal protection and has higher dropout - less robust in thermally constrained enclosures. | Prefer MAX8841ELT26+ for designs requiring guaranteed fault tolerance and extended battery life below 3V input. |
Compared with MAX8840ELT26+, the MAX8841ELT26+ trades 219µVRMS higher noise for zero-bypass simplicity and identical protection features; versus XC6219B262MR-G, it delivers 130mV lower dropout and integrated thermal shutdown-critical for sealed wearable enclosures.
Availability
MAX8841ELT26+ is available at Aetrix Electronics and suitable for Bluetooth accessories, portable medical sensors, digital camera modules, and wearable biometric devices requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8841ELT26+ 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 MAX8840/MAX8841/MAX8842 family was designed specifically for space-constrained, battery-powered systems demanding ultra-low noise, high PSRR, and minimal external components-targeting cellular handsets, portable radios, and imaging equipment.
FAQ
What is the output voltage tolerance of MAX8841ELT26+ over temperature and load?
The MAX8841ELT26+ guarantees ±3% output voltage accuracy across the full operating range: -40°C to +85°C ambient temperature and 100µA to 80mA load current. At room temperature and 1mA load, typical deviation is ±1%. This tolerance ensures reliable operation of 2.5V–2.7V logic and analog circuits without external calibration.
Does MAX8841ELT26+ require an external bypass capacitor like the MAX8840 series?
No, the MAX8841ELT26+ does not require an external bypass capacitor. Unlike the MAX8840ELT26+, which uses a BP pin and 10nF capacitor to achieve 11µVRMS noise, the MAX8841ELT26+ eliminates the BP function entirely-reducing component count and PCB area while maintaining 230µVRMS noise performance suitable for most portable RF and audio applications.
What is the maximum input voltage rating for MAX8841ELT26+?
The MAX8841ELT26+ has an absolute maximum input voltage rating of +7V relative to GND. However, its specified operating input voltage range is 2V to 6V. Operation above 6V risks exceeding safe power dissipation limits and may trigger thermal shutdown; sustained use beyond 6V is not recommended per datasheet specifications.
How does the shutdown functionality work on MAX8841ELT26+?
The MAX8841ELT26+ features an active-low SHDN pin: pulling it to ≤0.4V disables the internal voltage reference, error amplifier, and pass transistor, reducing supply current to <1µA. The output enters high-impedance state. Release SHDN (e.g., tie to IN) to resume regulation; exit delay is typically 300µs, ensuring fast wake-up in responsive portable systems.
Can MAX8841ELT26+ be used with ceramic capacitors smaller than 1µF?
No-stability is guaranteed only with ≥1µF ceramic output capacitance (X5R/X7R dielectric) and ≥1µF input capacitance. Using smaller values risks oscillation or poor transient response. The datasheet explicitly states "stable with 1µF ceramic capacitor for any load," and typical operating characteristics assume this value; derating below 1µF voids stability assurance.
MAX8841ELT26+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Bulk
- Product Status:
- Active
- 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
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- -
- PSRR:
- 72dB ~ 46dB (1kHz ~ 100kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX8841ELT26+ FAQ
1.How can I place an order for MAX8841ELT26+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8841ELT26+ 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 MAX8841ELT26+ reliable?
The price and inventory of MAX8841ELT26+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8841ELT26+ is usually 5 days.
3.What payment methods are accepted for MAX8841ELT26+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8841ELT26+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8841ELT26+?
MAX8841ELT26+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8841ELT26+ 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 MAX8841ELT26+?
For technical support, including MAX8841ELT26+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8841ELT26+ requirements.
6.How does Aetrix verify that MAX8841ELT26+ is sourced from the original manufacturer or authorized distributors?
All MAX8841ELT26+ 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 MAX8841ELT26+ meets industry standards.
7.What is the process for return or replacement of MAX8841ELT26+?
All MAX8841ELT26+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8841ELT26+, 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 MAX8841ELT26+ part is unused and in its original packaging.
Return procedure for MAX8841ELT26+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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