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Analog Devices Inc./Maxim Integrated MAX8841ELT15+
- Part No.:
- MAX8841ELT15+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WFDFN
- Datasheet:
-
MAX8841ELT15+.pdf
- Description:
- IC REG LINEAR ULTRA LO NOISE LDO
- Quantity:
- Payment:
- Shipping:
Inventory:5,012
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Product details
Overview
MAX8841ELT15+ from Maxim Integrated is a 1.5V fixed-output, 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 battery-powered systems such as Bluetooth radios and digital cameras.
For engineers reviewing the MAX8841ELT15+ datasheet, MAX8841ELT15+ pinout, MAX8841ELT15+ application, or MAX8841ELT15+ equivalent, key selection criteria include guaranteed 150mA output capability, absence of bypass capacitor requirement (simplifying layout), 1.5V preset output voltage, and µDFN-6 package compatibility with space-constrained PCB designs.
Technical Context
The MAX8841ELT15+ uses a p-channel MOSFET series pass transistor with 1Ω typical RDS(ON), enabling low dropout and eliminating base-drive current loss. Its bandgap reference (1.225V) feeds an error amplifier that controls the pass transistor gate to maintain regulation without external feedback components.
No BP (bypass) pin is present - unlike the MAX8840 - and no FB pin is used - unlike the MAX8842 - confirming its role as a fully self-contained, factory-preset LDO. Shutdown logic reduces supply current below 1µA, and thermal shutdown activates at +160°C with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±3% over -40°C to +85°C; enables direct replacement for 1.5V logic/analog rails without resistor network. |
| Max Output Current | Guaranteed 150mA minimum; supports moderate-power RF ICs or sensor signal chains without derating. |
| Dropout Voltage | 120mV at 120mA load; allows operation down to VIN = 1.62V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Ground Current | 40µA typical at light load; minimizes quiescent power loss critical for always-on subsystems. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz; suppresses switching noise from DC-DC converters feeding adjacent circuitry. |
| Stability | Guaranteed with 1µF ceramic CIN/COUT; eliminates need for tantalum or large bulk capacitors, reducing BOM count and board area. |
| Shutdown Current | <1µA; enables deep-sleep modes in portable devices without compromising system-level standby power budget. |
Pinout & Package
MAX8841ELT15+ is housed in a 1.0mm × 1.5mm × 0.8mm, 6-pin µDFN package with exposed thermal pad (pin 2 = GND). 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 & Thermal Path | Primary return path and main thermal conduction route; requires direct connection to large copper pour or ground plane. |
| 3 SHDN | Active-Low Enable Control | Pull ≤0.4V to disable regulator; logic-high ≥1.5V enables operation; draws <0.1µA bias current. |
| 4 N.C. | No Internal Connection | Not bonded; must remain unconnected on PCB; no routing or soldering required. |
| 5 N.C. | No Internal Connection | Not bonded; must remain unconnected on PCB; no routing or soldering required. |
| 6 OUT | Regulated Output | Delivers stable 1.5V; requires ≥1µF ceramic capacitor to GND; high-impedance during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Space-saving µDFN | 1.0mm × 1.5mm footprint with 0.5mm pitch; fits into <1.5mm² PCB area, ideal for wearables and compact modules. |
| No bypass capacitor required | Eliminates BP pin and external 10nF capacitor - simplifies layout, reduces component count, and avoids BP leakage sensitivity. |
| Low ground current | 40µA typical at light load and 220µA in dropout; extends battery runtime in intermittent-use applications. |
| Overcurrent & thermal protection | Current limit set at 150–300mA range; thermal shutdown at +160°C with automatic recovery after 10°C cooldown. |
| Stable with minimal capacitance | Operates robustly with 1µF X7R/X5R ceramic capacitors across full temperature range; no ESR tuning needed. |
Applications
| Bluetooth Audio Transceivers | Digital Camera Image Sensors |
|---|---|
|
Use Scenario: Powering RF transceiver ICs and audio codecs in Bluetooth headsets and speaker docks where RF noise coupling degrades SNR. IC Role / Device Role: Clean 1.5V supply for VDD_IO or reference voltage inputs of 2.4GHz transceivers and DACs. Use Value: 72dB PSRR at 1kHz suppresses switching noise from nearby DC-DC converters, preserving 90+ dB SNR in audio paths. |
Use Scenario: Biasing CMOS image sensor analog front-end (AFE) and column ADC circuits requiring ultra-stable low-noise voltage. IC Role / Device Role: Dedicated 1.5V LDO for sensor analog core, isolated from noisy digital domains. Use Value: 40µA ground current and 120mV dropout enable long-duration capture modes on coin-cell or single-cell Li-ion batteries. |
| Portable Medical Sensors | Industrial Handheld Terminals |
|
Use Scenario: Supplying precision analog signal conditioning stages (e.g., instrumentation amplifiers, sigma-delta ADC references) in wearable biosensors. IC Role / Device Role: Low-drift, low-noise 1.5V rail for reference buffers and PGA bias networks. Use Value: ±3% output accuracy over -40°C to +85°C ensures consistent gain calibration across environmental conditions. |
Use Scenario: Powering NFC controllers, secure elements, and display driver ICs in ruggedized handheld terminals operating in variable-temperature field environments. IC Role / Device Role: Primary 1.5V supply for security co-processors and interface logic with strict voltage tolerance. Use Value: Guaranteed 150mA output and thermal shutdown ensure reliable operation during extended barcode scanning or wireless communication bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0515PDBVR | 1.5V fixed, 200mA output, 170mV dropout at 150mA, 25µA IQ, SOT-23-5 package (2.9mm × 1.6mm). | Larger footprint; higher dropout limits usable input range in low-VIN battery scenarios. | Choose when board space permits larger package and lower IQ is prioritized over dropout performance. |
| MCP1700T-1502E/TT | 1.5V fixed, 250mA output, 600mV dropout at 250mA, 1.6µA IQ, SOT-23-3 package (no enable pin). | No SHDN pin; higher dropout restricts use to >2.1V input; ultra-low IQ suits multi-year battery life requirements. | Choose for always-on, ultra-low-power sensor nodes where enable control and tight dropout are not required. |
Compared with TPS7A0515PDBVR and MCP1700T-1502E/TT, MAX8841ELT15+ delivers superior dropout (120mV vs. 170mV/600mV) and integrated enable functionality in a 60% smaller footprint, making it optimal for miniaturized, noise-sensitive, battery-critical designs.
Availability
MAX8841ELT15+ is available at Aetrix Electronics and suitable for Bluetooth portable radios, digital camera modules, and portable medical sensors requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8841ELT15+ 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 ultra-low-noise, space-constrained battery-powered systems - emphasizing minimal external components, low quiescent current, and robust transient response in portable electronics.
FAQ
What is the maximum input voltage rating for MAX8841ELT15+?
The MAX8841ELT15+ has an absolute maximum input voltage of +7V relative to GND. However, its specified operating input range is 2V to 6V. Operation above 6V is not guaranteed and may compromise reliability or parametric performance. For sustained operation, keep VIN within 2V–6V, especially under load or elevated temperature.
Does MAX8841ELT15+ require an external feedback resistor network?
No, MAX8841ELT15+ does not require an external feedback resistor network. It is a factory-preset 1.5V LDO with internal voltage division. Unlike the adjustable MAX8842, the MAX8841ELT15+ integrates all regulation circuitry - including the 1.225V bandgap reference and error amplifier feedback - internally, eliminating external resistors and associated layout complexity.
Can MAX8841ELT15+ be used with X7R ceramic capacitors?
Yes, MAX8841ELT15+ is fully compatible with X7R ceramic capacitors for both input and output. The datasheet explicitly confirms stability with 1µF X7R or X5R dielectrics across the full -40°C to +85°C temperature range. X7R offers excellent capacitance retention and low ESR, making it ideal for minimizing board area while ensuring transient response and PSRR performance.
What is the thermal shutdown behavior of MAX8841ELT15+?
MAX8841ELT15+ activates thermal shutdown when junction temperature exceeds +160°C. It then disables the pass transistor and enters high-impedance output state. After cooling by 10°C (to ~+150°C), the device automatically resumes regulation. This hysteresis prevents oscillation during thermal overload and protects against permanent damage during sustained high-power dissipation.
Is MAX8841ELT15+ pin-compatible with other variants in the MAX884x family?
MAX8841ELT15+ shares the same 6-pin µDFN package and pinout as MAX8840 and MAX8842, but functional pin assignments differ: Pin 4 is N.C. on MAX8841ELT15+, whereas it is BP (bypass) on MAX8840 and FB (feedback) on MAX8842. Therefore, while physical mounting is identical, PCB layout must match the specific variant's pin function - MAX8841ELT15+ cannot be substituted without verifying pin mapping and external circuit compatibility.
MAX8841ELT15+ 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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-uDFN (1.5x1)
MAX8841ELT15+ FAQ
1.How can I place an order for MAX8841ELT15+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8841ELT15+ 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 MAX8841ELT15+ reliable?
The price and inventory of MAX8841ELT15+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8841ELT15+ is usually 5 days.
3.What payment methods are accepted for MAX8841ELT15+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8841ELT15+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8841ELT15+?
MAX8841ELT15+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8841ELT15+ 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 MAX8841ELT15+?
For technical support, including MAX8841ELT15+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8841ELT15+ requirements.
6.How does Aetrix verify that MAX8841ELT15+ is sourced from the original manufacturer or authorized distributors?
All MAX8841ELT15+ 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 MAX8841ELT15+ meets industry standards.
7.What is the process for return or replacement of MAX8841ELT15+?
All MAX8841ELT15+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8841ELT15+, 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 MAX8841ELT15+ part is unused and in its original packaging.
Return procedure for MAX8841ELT15+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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