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Analog Devices Inc./Maxim Integrated MAX8511EXK15
- Part No.:
- MAX8511EXK15
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK15.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
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Product details
Overview
MAX8511EXK15 from Maxim Integrated is a 1.5V fixed-output, ultra-low-noise, low-dropout linear regulator delivering up to 120mA output current with 120mV dropout at full load, 40µA ground current, and stable operation with only 1µF ceramic input/output capacitors. It targets noise-sensitive RF and analog power rails in portable battery-powered systems such as Bluetooth radios and digital cameras.
For engineers reviewing the MAX8511EXK15 datasheet, MAX8511EXK15 pinout, MAX8511EXK15 application, or MAX8511EXK15 equivalent, key selection criteria include its 1.5V preset output, SC70-5 package footprint, absence of bypass capacitor requirement, 72dB PSRR at 1kHz, and guaranteed 120mA output capability under -40°C to +85°C operating conditions.
Technical Context
The MAX8511EXK15 uses a P-channel MOSFET series pass transistor (1Ω typical RDS(ON)) enabling low dropout and minimal quiescent current-no base drive required unlike PNP-based regulators. Its error amplifier compares a 1.225V bandgap reference against internal feedback to regulate output voltage.
Unlike the MAX8510, it omits the BP pin and bypass capacitor, simplifying layout and reducing board area; unlike the MAX8512, it lacks FB pin and external feedback, offering factory-preset 1.5V output with no adjustment circuitry. Shutdown logic disables reference, error amplifier, and gate drive, reducing supply current below 1µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±3% over load/temperature; eliminates need for external resistor divider and ensures consistent rail for 1.5V logic or analog circuits. |
| Max Output Current | 120mA guaranteed minimum; supports moderate-power RF ICs, sensors, or microcontroller cores without thermal derating in SC70 package. |
| Dropout Voltage | 120mV at 120mA load; enables 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 standby power loss critical for always-on functions in portable devices. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz; suppresses switching noise from DC-DC converters feeding the input, protecting sensitive analog/RF stages. |
| Stability | Guaranteed stable with 1µF ±20% X5R/X7R ceramic capacitors on IN and OUT; eliminates need for tantalum or large bulk capacitance. |
| Shutdown Current | <1µA maximum; allows deep-sleep modes in battery-powered equipment without significant leakage drain. |
Pinout & Package
MAX8511EXK15 is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm × 0.95mm), optimized for space-constrained PCB layouts. The exposed pad variant is not used in this part number; thermal dissipation relies on GND pin conduction through standard copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Unregulated Input Supply | Accepts 2V–6V input; requires 1µF ceramic decoupling close to pin to ensure PSRR and transient response. |
| 2 (GND) | Ground Reference and Thermal Path | Serves as both signal return and primary heat sink; must connect to large copper area for thermal management. |
| 3 (SHDN) | Active-Low Enable Control | Pulled high to IN for normal operation; driven low (<0.4V) to enter sub-1µA shutdown state. |
| 4 (N.C.) | No Internal Connection | Not bonded; must remain unconnected-no routing or stitching vias permitted. |
| 5 (OUT) | Regulated 1.5V Output | Delivers up to 120mA; bypassed with 1µF ceramic to GND; output impedance remains low across 10Hz–1MHz. |
Key Features
| Feature | Design Value |
|---|---|
| No bypass capacitor required | Eliminates BP pin and 10nF CBP component, reducing BOM count and PCB area by ~0.5mm² vs. MAX8510. |
| Ultra-low ground current | 40µA typical at light load ensures >1-year battery life in 10µA average-current IoT sensor nodes. |
| High PSRR at audio frequencies | 72dB rejection at 1kHz prevents audible noise coupling from PMIC switchers into audio codecs or ADC references. |
| Robust protection suite | Integrated current limiting (130–300mA range) and thermal shutdown (160°C trip, 10°C hysteresis) prevent damage during fault conditions. |
| SC70-5 footprint compatibility | Enables drop-in replacement for other 5-pin SC70 LDOs (e.g., TPS76315, MCP1700-15) with identical land pattern and solder profile. |
Applications
| Bluetooth Radio Power Rail | Digital Camera Sensor Bias |
|---|---|
|
Use Scenario: Powers RF transceiver IC (e.g., CC2541) in compact wearable Bluetooth earbuds where EMI and board space are critical. IC Role / Device Role / Timing Role: Provides clean, low-noise 1.5V supply to RF synthesizer VCO and LNA bias networks. Use Value: 11µVRMS noise (shared architecture with MAX8510) and 72dB PSRR prevent reciprocal mixing and phase noise degradation in 2.4GHz band. |
Use Scenario: Supplies image sensor analog front-end (AFE) in ultra-thin point-and-shoot cameras using single-cell lithium battery. IC Role / Device Role / Timing Role: Delivers stable 1.5V reference for column ADC drivers and pixel amplifiers. Use Value: 120mV dropout extends operational time down to 1.62V battery voltage, capturing ~12% more shots per charge vs. higher-dropout alternatives. |
| Portable Audio DAC Reference | Low-Power MCU Core Rail |
|
Use Scenario: Generates precision 1.5V reference for stereo DAC (e.g., PCM5102A) in battery-powered portable music players. IC Role / Device Role / Timing Role: Low-noise analog supply for DAC's internal reference buffer and output op-amps. Use Value: 40µA quiescent current minimizes idle power draw, while 1µF stability enables use of small 0402-case ceramics-reducing total solution size by 30%. |
Use Scenario: Powers ARM Cortex-M0+ core in energy-harvesting wireless sensor nodes where duty-cycled operation demands µA-level sleep current. IC Role / Device Role / Timing Role: Primary regulated supply for processor VDDIO and analog peripherals during active bursts. Use Value: Sub-1µA shutdown current enables multi-year operation on coin-cell batteries when paired with efficient wake-up scheduling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS76315DBVR | 1.5V fixed, 150mA output, 250mV dropout at 150mA, 85µA IQ, SOT-23-5 package. | Higher dropout and IQ reduce battery runtime in deep-discharge scenarios; larger SOT-23 footprint increases board area. | Select when higher output current margin is needed and SC70 size constraint is relaxed. |
| Microchip MCP1700-1502E/TO | 1.5V fixed, 250mA output, 600mV dropout at 250mA, 1.3µA IQ, SOT-23-3 package (no SHDN). | No enable pin limits power sequencing control; higher dropout restricts low-VIN operation; 3-pin package lacks SHDN flexibility. | Select for cost-sensitive designs requiring ultra-low IQ and no shutdown functionality. |
Compared with TPS76315DBVR and MCP1700-1502E/TO, MAX8511EXK15 delivers superior battery efficiency via lower dropout and ground current in the smallest SC70-5 footprint, while retaining active shutdown control-making it optimal for space- and energy-constrained portable RF systems.
Availability
MAX8511EXK15 is available at Aetrix Electronics and suitable for Bluetooth radios, digital camera sensor biasing, portable audio DAC references, low-power MCU core rails, and wireless sensor node power management requiring stable component supply across industrial temperature ranges.
Supply support for MAX8511EXK15 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 ultra-low-noise, low-quiescent-current regulation in space-constrained portable electronics-emphasizing RF cleanliness, battery longevity, and minimal external components.
FAQ
What is the output voltage tolerance of MAX8511EXK15 over temperature and load?
The MAX8511EXK15 guarantees ±3% output voltage accuracy across full load (100µA to 80mA) and temperature (-40°C to +85°C). At +25°C and 1mA load, typical deviation is ±1%. This tight tolerance ensures reliable operation of 1.5V logic interfaces and analog circuits without external trimming.
Does MAX8511EXK15 require an external bypass capacitor like the MAX8510?
No, MAX8511EXK15 does not require an external bypass capacitor. Unlike the MAX8510 (which uses a BP pin and 10nF capacitor to achieve 11µVRMS noise), the MAX8511EXK15 omits the BP pin and achieves 230µVRMS noise (100Hz–100kHz) without additional components-simplifying design and saving PCB area.
What is the minimum input voltage required for MAX8511EXK15 to maintain regulation at 120mA load?
At 120mA load, MAX8511EXK15 requires a minimum input voltage of 1.62V (1.5V + 120mV dropout) to maintain regulation. Below this, the output collapses linearly with input. This enables extended runtime from single-cell alkaline or Li-ion batteries discharging to end-of-life voltages.
Can MAX8511EXK15 be used with X5R or Y5V ceramic capacitors on the output?
MAX8511EXK15 is stable with 1µF X5R or X7R ceramic capacitors across the full -40°C to +85°C range. Y5V dielectrics are not recommended due to large capacitance drift at temperature extremes; if used, ≥2.2µF is required for stability below -10°C per the datasheet's ESR vs. load graph.
How does the shutdown function behave on MAX8511EXK15, and what is the exit delay?
Driving SHDN low disables the reference, error amplifier, and pass transistor, placing OUT in high-impedance state with <1µA supply current. MAX8511EXK15 exits shutdown in ≤300µs (typical) when SHDN rises above 1.5V, allowing fast wake-up in burst-mode systems without external reset timing components.
MAX8511EXK15 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 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
MAX8511EXK15 FAQ
1.How can I place an order for MAX8511EXK15 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK15 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 MAX8511EXK15 reliable?
The price and inventory of MAX8511EXK15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK15 is usually 5 days.
3.What payment methods are accepted for MAX8511EXK15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK15?
MAX8511EXK15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK15 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 MAX8511EXK15?
For technical support, including MAX8511EXK15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK15 requirements.
6.How does Aetrix verify that MAX8511EXK15 is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK15 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 MAX8511EXK15 meets industry standards.
7.What is the process for return or replacement of MAX8511EXK15?
All MAX8511EXK15 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK15, 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 MAX8511EXK15 part is unused and in its original packaging.
Return procedure for MAX8511EXK15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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