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Analog Devices Inc./Maxim Integrated MAX8511EXK35+
- Part No.:
- MAX8511EXK35+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK35+.pdf
- Description:
- IC REG LINEAR ULTRA LO NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:3,090
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Product details
Overview
MAX8511EXK35+ from Maxim Integrated is a 3.5V fixed-output, ultra-low-noise, low-dropout linear regulator featuring a P-channel MOSFET pass element, 120mV dropout at 120mA, 40µA ground current, and stable operation with only 1µF ceramic output capacitance. It delivers precision regulation for noise-sensitive analog circuitry in portable RF and audio subsystems.
For engineers reviewing the MAX8511EXK35+ datasheet, MAX8511EXK35+ pinout, MAX8511EXK35+ application, or MAX8511EXK35+ equivalent, key selection criteria include its no-bypass-capacitor architecture, guaranteed 120mA output, ±3% output voltage accuracy over load/temperature, and SC70-5 package compatibility with space-constrained battery-powered designs.
Technical Context
The MAX8511EXK35+ uses an internal 1.225V bandgap reference and error amplifier to regulate output against load and line variations, with shutdown logic disabling the reference and pass transistor to achieve <1µA quiescent current. Its P-channel MOSFET pass device eliminates base-drive current, enabling consistent 40µA ground current across load conditions.
No BP (bypass) pin is present-unlike the MAX8510-so noise reduction relies solely on inherent architecture and external 1µF ceramic output capacitance. The device integrates thermal shutdown (160°C trip, 10°C hysteresis) and current limiting (130–300mA range), operating from 2V to 6V input across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.5V ±3% over full temperature/load range-ensures stable bias for RF front-end ICs and ADC references. |
| Max Output Current | 120mA continuous-supports moderate-power analog subsystems without thermal derating in SC70 package. |
| Dropout Voltage | 120mV at 120mA load-enables operation down to 3.62V input when powering 3.5V circuits from single-cell Li-ion. |
| Ground Current | 40µA typical at light load-extends battery life in always-on sensor nodes and standby audio stages. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz-rejects switching noise from DC-DC converters feeding mixed-signal SoCs. |
| Stability | Guaranteed with 1µF ceramic output capacitor-eliminates need for larger or higher-ESR capacitors, reducing BOM count and board area. |
| Shutdown Current | <1µA-enables deep-sleep modes in portable devices without leakage-induced battery drain. |
Pinout & Package
MAX8511EXK35+ is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm × 0.95mm, 0.65mm pitch), with exposed pad not present-unlike TDFN variants. The package is RoHS-compliant and lead-free (+ suffix).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Unregulated Input Supply | Accepts 2V–6V input; requires 1µF ceramic decoupling close to pin for stability and PSRR performance. |
| 2 (GND) | Ground Reference and Thermal Path | Serves as primary return path and primary heat sink-must connect to solid ground plane for thermal reliability. |
| 3 (SHDN) | Active-Low Shutdown 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 or connected internally-must remain unconnected on PCB; no routing or stitching required. |
| 5 (OUT) | Regulated 3.5V Output | Delivers low-noise 3.5V supply; bypassed with 1µF ceramic to GND; high-impedance during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| No external bypass capacitor required | Eliminates BP pin and associated 10nF capacitor-reduces component count and layout complexity vs. MAX8510. |
| Ultra-low ground current | 40µA typical across load range-minimizes quiescent power loss in battery-critical applications like Bluetooth headsets. |
| Stable with minimal output capacitance | 1µF ceramic sufficient for all loads-avoids use of larger, less reliable tantalum or electrolytic capacitors. |
| Integrated protection | Thermal shutdown (160°C) and current limit (130–300mA)-enables robust operation without external fault management circuitry. |
| High PSRR at audio frequencies | 72dB at 1kHz-suppresses ripple from buck converter switching frequencies interfering with audio DACs or op-amps. |
Applications
| Cellular Front-End Power | Portable Audio Codec Bias |
|---|---|
Use Scenario: Powers LNA, mixer, and IF amplifier stages in GSM/UMTS handset RF transceivers where supply noise directly impacts EVM and adjacent channel rejection. IC Role / Device Role / Timing Role: Low-noise 3.5V bias rail generator with fast transient response to handle burst-mode TX current spikes. Use Value: 120mV dropout enables >95% battery utilization; 72dB PSRR at 1kHz prevents switching noise from PMU DC-DC from modulating RF signals. | Use Scenario: Supplies clean 3.5V reference and analog core voltage to stereo audio codecs in Bluetooth speakers and wireless earbuds. IC Role / Device Role / Timing Role: Primary analog supply regulator ensuring low THD+N in DAC output paths and microphone preamp biasing. Use Value: 40µA ground current extends playback time; 1µF stability simplifies layout in tight acoustic module spaces. |
| Digital Camera Sensor Interface | WLAN Baseband Processor Core |
Use Scenario: Provides regulated 3.5V to CMOS image sensor interface circuitry and timing controllers in compact digital cameras and action cams. IC Role / Device Role / Timing Role: Precision analog rail for sensor ADC reference and PLL VCO tuning voltage generation. Use Value: ±3% output accuracy ensures consistent exposure calibration; SC70 footprint fits alongside small-format sensors. | Use Scenario: Powers 3.5V I/O and analog PHY sections of IEEE 802.11a/b/g/n baseband processors in portable routers and client adapters. IC Role / Device Role / Timing Role: Noise-immune supply for WLAN RF synthesizer and analog front-end blocks sensitive to supply perturbations. Use Value: 46dB PSRR at 100kHz suppresses 2.4GHz harmonics from switching regulators; 120mA capacity supports burst data transmission peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS78235DRVR | 3.5V fixed, 150mA, 250mV dropout at 150mA, 1.3µA IQ, requires 2.2µF output cap | Higher dropout limits usable battery range; lower IQ benefits ultra-low-power sleep modes | Select when sub-µA shutdown current is critical and board space allows larger output capacitor. |
| MCP1700T-3502E/TT | 3.5V fixed, 250mA, 600mV dropout at 250mA, 1.6µA IQ, stable with 1µF | Higher dropout and lower PSRR (55dB @ 1kHz) reduce noise immunity in RF/audio systems | Select for cost-sensitive industrial sensors where noise performance is secondary to current capability. |
Compared with TPS78235DRVR and MCP1700T-3502E/TT, MAX8511EXK35+ delivers superior noise suppression (72dB PSRR @ 1kHz) and lower dropout (120mV) in the same SC70 footprint-making it optimal for RF and high-fidelity audio supply rails where supply integrity directly impacts signal fidelity.
Availability
MAX8511EXK35+ is available at Aetrix Electronics and suitable for cellular front-end power, portable audio codec bias, and digital camera sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8511EXK35+ 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 industrial, communications, and consumer applications.
The MAX8510/MAX8511/MAX8512 family was designed specifically for space-constrained, battery-powered systems requiring ultra-low noise, high PSRR, and minimal external components-targeting RF, audio, and imaging subsystems in portable electronics.
FAQ
What is the output voltage tolerance of MAX8511EXK35+ over temperature and load?
The MAX8511EXK35+ guarantees ±3% output voltage accuracy across –40°C to +85°C ambient temperature and for output currents from 100µA to 80mA. At 120mA, deviation remains within specification due to low dropout and stable internal feedback. This tolerance ensures reliable operation of 3.3V–3.6V tolerant analog circuits without external trimming.
Does MAX8511EXK35+ require a bypass capacitor on the BP pin?
No, MAX8511EXK35+ does not have a BP (bypass) pin and requires no external bypass capacitor. Unlike the MAX8510, its architecture achieves low output noise (230µVRMS) without BP pin support-simplifying design and reducing component count. The 3.5V output is stabilized using only 1µF ceramic output capacitance.
What is the maximum input voltage rating for MAX8511EXK35+?
The absolute maximum input voltage for MAX8511EXK35+ is +7V referenced to GND. However, the recommended operating input range is 2V to 6V. Exceeding 6V risks exceeding power dissipation limits in the SC70 package, especially at high ambient temperatures or heavy loads-designs should maintain VIN ≤ 6V for reliable long-term operation.
How does MAX8511EXK35+ behave during shutdown?
When SHDN is pulled low (<0.4V), MAX8511EXK35+ disables its voltage reference, error amplifier, and pass transistor, reducing supply current to <1µA. The OUT pin enters high-impedance state-no reverse current flows, and output voltage collapses passively through system load. Exit delay is 300µs typical, enabling fast wake-up in responsive portable systems.
Can MAX8511EXK35+ be used with X5R or Y5V ceramic capacitors?
MAX8511EXK35+ is fully stable with 1µF X7R or X5R ceramic capacitors across –40°C to +85°C. Y5V dielectrics are not recommended: their large capacitance and ESR variation below –10°C may compromise stability. For guaranteed performance across full temperature range, X5R or X7R dielectrics with 1µF nominal value are preferred per Maxim's application guidance.
MAX8511EXK35+ 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):
- 3.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 120mA
- Current - Output:
- 120mA
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- -
- PSRR:
- 72dB ~ 46dB (1kHz ~ 100kHz)
- Control Features:
- Enable
- 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
MAX8511EXK35+ FAQ
1.How can I place an order for MAX8511EXK35+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK35+ 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 MAX8511EXK35+ reliable?
The price and inventory of MAX8511EXK35+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK35+ is usually 5 days.
3.What payment methods are accepted for MAX8511EXK35+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK35+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK35+?
MAX8511EXK35+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK35+ 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 MAX8511EXK35+?
For technical support, including MAX8511EXK35+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK35+ requirements.
6.How does Aetrix verify that MAX8511EXK35+ is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK35+ 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 MAX8511EXK35+ meets industry standards.
7.What is the process for return or replacement of MAX8511EXK35+?
All MAX8511EXK35+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK35+, 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 MAX8511EXK35+ part is unused and in its original packaging.
Return procedure for MAX8511EXK35+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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