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Analog Devices Inc./Maxim Integrated MAX8511EXK15-T
- Part No.:
- MAX8511EXK15-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK15-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
The MAX8511EXK15-T from Maxim Integrated is a 1.5V fixed-output, ultra-low-noise, low-dropout linear regulator featuring a P-channel MOSFET pass device, 120mV dropout at 120mA, 40µA ground current, and stable operation with only 1µF ceramic output capacitance - designed for noise-sensitive RF and analog circuitry in portable battery-powered systems.
For engineers reviewing the MAX8511EXK15-T datasheet, MAX8511EXK15-T pinout, MAX8511EXK15-T application, or MAX8511EXK15-T equivalent, key selection criteria include its no-bypass-capacitor architecture, SC70-5 package footprint, guaranteed 120mA output, shutdown current <1µA, and PSRR of 72dB at 1kHz - critical for LDO selection in space-constrained, low-power signal chains.
Technical Context
The MAX8511EXK15-T 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 eliminates base-drive current, enabling consistent 40µA ground current across load and input voltage.
Unlike the MAX8510 (which requires a 10nF BP-to-OUT capacitor for 11µVRMS noise), the MAX8511EXK15-T omits the BP pin and achieves 230µVRMS output noise (100Hz–100kHz) without external bypass - simplifying layout while maintaining high PSRR (72dB @ 1kHz, 46dB @ 100kHz) and fast load transient response near dropout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±3% over -40°C to +85°C - ensures stable biasing for low-voltage analog sensors and RF ICs. |
| Max Output Current | 120mA guaranteed - sufficient to power multiple low-power ICs (e.g., ADCs, op-amps, RF front-ends) from a single regulator. |
| 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 in always-on subsystems like real-time clocks or wake-up circuits. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz - suppresses switching noise from DC-DC converters feeding the LDO input, protecting sensitive analog stages. |
| Output Noise | 230µVRMS (100Hz–100kHz) - suitable for powering PLLs, VCOs, and precision ADCs where spectral purity is critical. |
| Shutdown Current | <1µA - enables deep-sleep modes in portable devices without compromising system-level power budget. |
| Capacitor Requirement | Stable with 1µF ceramic output cap (X7R/X5R) - eliminates need for tantalum or large electrolytics, reducing BOM cost and board area. |
Pinout & Package
Package: 5-pin SC70 (2.0mm × 1.25mm × 0.95mm, RoHS-compliant). Exposed pad not present - thermal performance relies on GND pin conduction via PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Unregulated input supply | Accepts 2V to 6V input; must be decoupled with ≥1µF ceramic capacitor close to pin. |
| 2 - GND | Ground reference and thermal path | Primary return for all currents; connect to solid ground plane to limit thermal resistance and stabilize regulation. |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.4V to disable regulator; logic-high ≥1.5V enables operation; input bias current <0.1µA minimizes leakage impact. |
| 4 - N.C. | No internal connection | Not bonded; must remain unconnected - floating or tied to GND/IN has no functional effect. |
| 5 - OUT | Regulated 1.5V output | Delivers up to 120mA; bypass with 1µF ceramic to GND; ESR <1Ω required for stability across full load range. |
Key Features
| Feature | Design Value |
|---|---|
| No external bypass capacitor required | Eliminates BP pin and 10nF capacitor - reduces component count, PCB area, and assembly cost vs. MAX8510. |
| Ultra-low ground current | 40µA typical at light load and 220µA in dropout - extends battery runtime in intermittent-use applications like remote controls or wearables. |
| High PSRR at audio frequencies | 72dB rejection at 1kHz - effectively filters ripple from buck converter outputs or noisy shared rails in mixed-signal SoC power domains. |
| Robust protection suite | Integrated current limiting (130–300mA), thermal shutdown (160°C trip, 10°C hysteresis), and indefinite short-circuit tolerance - enables reliable operation in unattended embedded systems. |
| SC70-5 footprint compatibility | Matches industry-standard 5-pin SC70 land pattern (90-0188) - allows drop-in replacement in existing layouts without redesign. |
| Stable with low-ESR ceramics | Validated for 1µF X7R/X5R capacitors across -40°C to +85°C - avoids temperature-dependent instability seen with Z5U/Y5V dielectrics. |
Applications
| Cellular Front-End Power | Portable Audio Codec Supply |
|---|---|
Use Scenario: Powering RF transceiver LNA, mixer, and VCO in GSM/UMTS handset designs where supply noise directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning switched-mode supply rail before analog RF blocks. Use Value: 230µVRMS noise and 72dB PSRR at 1kHz prevent AM-to-PM conversion in VCOs and preserve receiver sensitivity below -105dBm. | Use Scenario: Supplying high-resolution audio DAC and headphone amplifier in Bluetooth earbuds requiring clean 1.5V bias under dynamic load. IC Role / Device Role / Timing Role: Primary analog supply rail decoupling DC-DC converter output for THD+N-critical signal paths. Use Value: 120mV dropout enables operation until battery drops to 1.62V, extending playback time by >12% versus higher-dropout alternatives. |
| Medical Sensor Signal Chain | Industrial IoT Edge Node |
Use Scenario: Biasing low-power instrumentation amplifiers and 24-bit delta-sigma ADCs in wearable ECG monitors where supply-induced offset drift degrades diagnostic accuracy. IC Role / Device Role / Timing Role: Precision analog domain regulator isolating sensitive analog front-end from digital MCU noise. Use Value: 40µA ground current and <1µA shutdown current enable multi-week battery life in continuous monitoring mode. | Use Scenario: Powering LoRaWAN transceiver and ARM Cortex-M0+ microcontroller in battery-operated smart meter sensor nodes deployed for 10+ years. IC Role / Device Role / Timing Role: Main system LDO delivering regulated 1.5V to MCU core and RF IC during active transmission bursts. Use Value: Guaranteed 120mA output supports 200ms transmit peaks without brownout, while SC70-5 size fits constrained 12mm × 12mm PCB footprints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B152MR-G | 1.5V fixed, 150mA output, 120mV dropout, 25µA IQ, but requires 2.2µF min COUT and lacks thermal shutdown. | Suitable for cost-sensitive consumer electronics where extended thermal protection is not required. | Select when lower quiescent current is prioritized and thermal fault conditions are mitigated externally. |
| Analog Devices ADP160ACBZ-1.5-R7 | 1.5V fixed, 150mA, 195mV dropout, 550nA shutdown, 27µVRMS noise, but needs 1µF COUT with specific ESR range (0.03–2Ω). | Better for ultra-low-noise applications like precision data acquisition where 27µVRMS is mandatory. | Choose when noise floor is paramount and board layout allows strict ESR control on output capacitor. |
Compared with the Torex XC6219B152MR-G and ADP160ACBZ-1.5-R7, the MAX8511EXK15-T offers superior thermal protection and simpler capacitor requirements (no ESR constraints), making it more robust for industrial and medical deployments where reliability outweighs marginal IQ or noise improvements.
Availability
The MAX8511EXK15-T is available at Aetrix Electronics and suitable for cellular front-end power, portable audio codec supply, medical sensor signal chains, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MAX8511EXK15-T 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 demanding applications.
The MAX8510/MAX8511/MAX8512 family was engineered for ultra-low-noise, battery-efficient power delivery in space-constrained portable electronics - emphasizing dropout voltage, PSRR, and capacitor simplicity over raw current capacity.
FAQ
What is the maximum input voltage rating for the MAX8511EXK15-T?
The MAX8511EXK15-T has an absolute maximum input voltage of +7V referenced to GND. However, its operational input range is specified from 2V to 6V. Operating above 6V risks exceeding safe power dissipation limits and may trigger thermal shutdown, especially at high ambient temperatures or heavy loads. For reliable long-term use, keep VIN ≤ 6V per the Electrical Characteristics table.
Does the MAX8511EXK15-T require an external feedback resistor network?
No, the MAX8511EXK15-T does not require an external feedback resistor network. It is a fixed-output regulator preset to 1.5V at the factory. Unlike the adjustable MAX8512, the MAX8511EXK15-T uses internal resistive division and has no FB pin - simplifying design and eliminating resistor tolerance errors that affect output accuracy.
Can the MAX8511EXK15-T be used with a 0.47µF output capacitor?
No, the MAX8511EXK15-T is not guaranteed stable with a 0.47µF output capacitor. The datasheet specifies stability with ≥1µF ceramic output capacitance (X7R/X5R dielectric). Using 0.47µF may cause oscillation or poor transient response, particularly under load steps or temperature extremes. Always use 1µF or greater to ensure compliance with the region of stable COUT ESR curve shown in Figure toc20.
What is the thermal shutdown threshold and hysteresis of the MAX8511EXK15-T?
The MAX8511EXK15-T activates thermal shutdown when junction temperature exceeds +160°C and re-enables regulation after cooling by 10°C (i.e., hysteresis = 10°C). This behavior is confirmed in the Electrical Characteristics table under "Thermal Shutdown" and "Thermal-Shutdown Hysteresis." During sustained overload, the device cycles on/off, producing a pulsed output until ambient conditions allow full recovery.
Is the MAX8511EXK15-T pin-compatible with the MAX8510EXK15-T?
No, the MAX8511EXK15-T is not pin-compatible with the MAX8510EXK15-T. While both use the SC70-5 package, the MAX8510EXK15-T has a BP (bypass) pin at position 4, whereas the MAX8511EXK15-T has N.C. (no connection) at pin 4. Swapping them without board revision will leave the BP node unconnected in the MAX8510 case or short the BP function in the MAX8511 layout - compromising noise performance or causing malfunction.
MAX8511EXK15-T 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-T FAQ
1.How can I place an order for MAX8511EXK15-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK15-T 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-T reliable?
The price and inventory of MAX8511EXK15-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK15-T is usually 5 days.
3.What payment methods are accepted for MAX8511EXK15-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK15-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK15-T?
MAX8511EXK15-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK15-T 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-T?
For technical support, including MAX8511EXK15-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK15-T requirements.
6.How does Aetrix verify that MAX8511EXK15-T is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK15-T 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-T meets industry standards.
7.What is the process for return or replacement of MAX8511EXK15-T?
All MAX8511EXK15-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK15-T, 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-T part is unused and in its original packaging.
Return procedure for MAX8511EXK15-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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