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Analog Devices Inc./Maxim Integrated MAX8511EXK33-T
- Part No.:
- MAX8511EXK33-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK33-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
The MAX8511EXK33-T from Maxim Integrated is a preset 3.3V, 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 capacitors-ideal for noise-sensitive RF and analog circuitry in portable battery-powered systems.
For engineers reviewing the MAX8511EXK33-T datasheet, MAX8511EXK33-T pinout, MAX8511EXK33-T application, or MAX8511EXK33-T equivalent, key selection criteria include its no-bypass-capacitor architecture, guaranteed 120mA output, 3.3V fixed output, SC70-5 package footprint, and thermal/overcurrent protection for compact, reliable power management in space-constrained designs.
Technical Context
The MAX8511EXK33-T uses a P-channel MOSFET series pass transistor (1Ω typical RDS(ON)) enabling low quiescent current and minimal dropout voltage across load and temperature. Its internal feedback network fixes the output at 3.3V without external resistors, eliminating the FB pin function present in the adjustable MAX8512 variant.
No BP (bypass) capacitor is required-unlike the MAX8510-due to its optimized internal noise-reduction architecture. Shutdown control is implemented via the SHDN pin, which reduces supply current to <1µA when pulled low, and the device enters high-impedance output state during disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% over -40°C to +85°C; eliminates need for external feedback resistors and saves PCB area. |
| Max Output Current | 120mA continuous; supports moderate-power analog/RF ICs such as Bluetooth transceivers or ADCs without derating. |
| Dropout Voltage | 120mV at 120mA load; enables operation down to VIN = 3.42V while maintaining regulation-critical for single-cell Li-ion end-of-life voltage. |
| Ground Current | 40µA typical at light load; extends battery life in always-on or low-duty-cycle portable applications. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz; suppresses switching noise from upstream DC-DC converters feeding sensitive analog stages. |
| Stability | Guaranteed stable with ≥1µF ceramic output capacitor (X5R/X7R); avoids costly tantalum or large electrolytic caps. |
| Shutdown Current | <1µA; enables deep-sleep modes in microcontroller-based systems without compromising system-level standby power. |
Pinout & Package
MAX8511EXK33-T is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm × 0.95mm), RoHS-compliant and lead-free, with exposed pad omitted (SC70 variant has no EP). The package requires standard reflow profiles and supports high-density layout.
| 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 for stability and noise rejection. |
| 2 - GND | Ground reference and thermal path | Serves as primary return path and heat sink; connect to solid ground plane to maintain thermal performance and low-noise integrity. |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.4V to disable regulator; connect to MCU GPIO or logic signal; open or pulled high (≥1.5V) enables operation. |
| 4 - N.C. | No internal connection | Not bonded; must remain unconnected-no routing or stitching vias allowed to avoid parasitic coupling. |
| 5 - OUT | Regulated 3.3V output | Delivers low-noise 3.3V; bypass with ≥1µF ceramic capacitor to GND; trace length minimized to preserve PSRR and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| No external bypass capacitor required | Eliminates BP pin and associated 10nF capacitor-reducing BOM count, PCB area, and assembly cost vs. MAX8510. |
| Ultra-low ground current | 40µA typical at light load ensures >1-year battery life in coin-cell–powered sensors operating at 1% duty cycle. |
| Thermal and overcurrent protection | Shuts down at 160°C junction temp with 10°C hysteresis; limits output to ≤300mA peak-enables robust operation under fault conditions. |
| Low-noise operation | 230µVRMS output noise (100Hz–100kHz); suitable for powering VCOs, PLLs, and precision ADCs without additional filtering. |
| SC70-5 footprint compatibility | Standard 5-pin SC70 land pattern (90-0188) allows drop-in replacement with other SC70 LDOs in existing layouts. |
Applications
| Bluetooth Audio Transmitter | Portable Medical Sensor Node |
|---|---|
Use Scenario: Powers Bluetooth audio codec and RF section in wireless earbuds with single Li-ion cell (3.0V–4.2V). IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying clean bias to RF front-end and audio DAC, rejecting switcher ripple from buck converter. Use Value: 72dB PSRR at 1kHz prevents audible switching artifacts; 120mV dropout extends playback time by 18 minutes at end-of-discharge. | Use Scenario: Supplies 3.3V to ultra-low-power ECG analog front-end and BLE SoC in wearable patch monitor. IC Role / Device Role / Timing Role: Always-on LDO delivering regulated rail during sleep and active sensing phases; shutdown controlled by host MCU. Use Value: 40µA ground current enables >30-day battery life on CR2032; 1µF ceramic stability simplifies layout in tight flex PCB area. |
| Digital Camera Image Sensor Bias | Industrial Handheld Scanner |
Use Scenario: Provides low-noise 3.3V bias to CMOS image sensor and timing controller in compact barcode scanner module. IC Role / Device Role / Timing Role: Noise-critical analog supply rail; operates alongside high-speed digital core powered by separate DC-DC. Use Value: 230µVRMS noise prevents fixed-pattern noise in captured images; SC70-5 size fits within 8mm × 8mm sensor module footprint. | Use Scenario: Powers laser driver, decoder ASIC, and touch interface in ruggedized handheld inventory scanner. IC Role / Device Role / Timing Role: Main system LDO handling intermittent 100mA bursts during scan trigger and decode cycles. Use Value: Guaranteed 120mA output supports simultaneous laser + decoder + display backlight; thermal protection prevents latch-up during extended use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS78233DRVR | 3.3V fixed, 150mA, 175mV dropout @150mA, 25µA IQ, 5-pin WSON (2mm × 2mm) | Larger dropout and higher max current; requires 2.2µF output cap for stability | Select when higher output current headroom or WSON package compatibility is needed; not pin-compatible. |
| MCP1700T-3302E/TT | 3.3V fixed, 250mA, 600mV dropout @250mA, 1.6µA IQ, SOT-23-5 | Higher dropout, lower noise rejection (55dB @1kHz), no thermal shutdown | Choose for ultra-low IQ in always-on monitoring; avoid in noise-sensitive or thermally constrained designs. |
Compared with TPS78233DRVR and MCP1700T-3302E/TT, the MAX8511EXK33-T delivers superior noise performance (230µVRMS vs. ≥450µVRMS), tighter dropout (120mV vs. ≥175mV), and integrated thermal protection-making it optimal for compact, battery-powered RF/analog systems where power integrity and reliability are critical.
Availability
MAX8511EXK33-T is available at Aetrix Electronics and suitable for Bluetooth accessories, portable medical devices, digital camera modules, and industrial handheld scanners requiring stable component supply with consistent parametric performance and long-term lifecycle support.
Supply support for MAX8511EXK33-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 industrial, communications, and consumer applications.
The MAX8510/MAX8511/MAX8512 family was designed specifically for ultra-low-noise, low-quiescent-current power delivery in space-constrained portable electronics-emphasizing minimal external components, ceramic capacitor compatibility, and robust protection features.
FAQ
What is the maximum input voltage rating for the MAX8511EXK33-T?
The MAX8511EXK33-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 may cause excessive power dissipation or violate safe operating area limits-even if within absolute maximum ratings-so design must ensure VIN stays ≤6V under all conditions including transients.
Does the MAX8511EXK33-T require an external bypass capacitor on the BP pin?
No, the MAX8511EXK33-T does not have a BP (bypass) pin and requires no external bypass capacitor. Unlike the MAX8510, the MAX8511 uses an internal architecture that achieves low output noise (230µVRMS) without external BP capacitance-reducing component count and board area while maintaining stability with only input and output ceramic capacitors.
What is the shutdown exit delay time for the MAX8511EXK33-T?
The MAX8511EXK33-T exhibits a typical shutdown exit delay of 300µs (measured from SHDN rising to 90% of final VOUT). This value is confirmed across temperature and load conditions per the datasheet's Electrical Characteristics table and applies directly to the MAX8511EXK33-T variant, enabling predictable power-up sequencing in microcontroller-based systems.
Can the MAX8511EXK33-T be used with X5R ceramic output capacitors?
Yes, the MAX8511EXK33-T is fully compatible with 1µF X5R ceramic output capacitors across its full operating temperature range (-40°C to +85°C). The datasheet explicitly confirms stability with X5R/X7R dielectrics at 1µF, unlike Z5U/Y5V types which require ≥2.2µF for low-temperature stability-making X5R ideal for compact, reliable designs.
Is the MAX8511EXK33-T pin-compatible with other SC70-5 LDOs like the TPS79533?
No, the MAX8511EXK33-T is not pin-compatible with the TPS79533. While both use SC70-5 packages, their pinouts differ: MAX8511EXK33-T assigns Pin 4 as N.C., whereas TPS79533 uses Pin 4 for EN. Direct substitution would cause functional failure or damage. Always verify pin mapping and electrical characteristics before replacement.
MAX8511EXK33-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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 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
MAX8511EXK33-T FAQ
1.How can I place an order for MAX8511EXK33-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK33-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 MAX8511EXK33-T reliable?
The price and inventory of MAX8511EXK33-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK33-T is usually 5 days.
3.What payment methods are accepted for MAX8511EXK33-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK33-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK33-T?
MAX8511EXK33-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK33-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 MAX8511EXK33-T?
For technical support, including MAX8511EXK33-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK33-T requirements.
6.How does Aetrix verify that MAX8511EXK33-T is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK33-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 MAX8511EXK33-T meets industry standards.
7.What is the process for return or replacement of MAX8511EXK33-T?
All MAX8511EXK33-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK33-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 MAX8511EXK33-T part is unused and in its original packaging.
Return procedure for MAX8511EXK33-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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