My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8511EXK29+
- Part No.:
- MAX8511EXK29+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK29+.pdf
- Description:
- IC REG LINEAR ULTRA LO NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:1,161
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8511EXK29+ from Maxim Integrated is a preset 2.85V, 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. It targets noise-sensitive analog and RF power rails in portable battery-powered systems.
For engineers reviewing the MAX8511EXK29+ datasheet, MAX8511EXK29+ pinout, MAX8511EXK29+ application, or MAX8511EXK29+ equivalent, key selection criteria include guaranteed 120mA output, 2.85V fixed output, SC70-5 package footprint, absence of bypass capacitor requirement, and PSRR performance at 1kHz and 100kHz.
Technical Context
The MAX8511EXK29+ uses a P-channel MOSFET pass transistor (typical RDS(ON) = 1Ω) enabling low dropout and minimal ground current across load and temperature. Its architecture omits the BP pin-unlike the MAX8510-eliminating need for an external bypass capacitor while maintaining 230µVRMS output noise (100Hz–100kHz).
Shutdown control is implemented via a CMOS-compatible SHDN pin with logic-low threshold ≤0.4V and leakage <0.01µA; when asserted, quiescent current drops below 1µA and output enters high-impedance state. Internal thermal shutdown activates at +160°C with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85V ±3% over -40°C to +85°C; enables direct replacement of 2.85V rails without feedback resistor network. |
| Max Output Current | 120mA guaranteed minimum; supports moderate-power analog ICs, RF front-ends, and sensor signal chains. |
| Dropout Voltage | 120mV at 120mA load; allows operation down to VIN = 2.97V, extending usable battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Ground Current | 40µA typical at light load; contributes negligible drain during standby, critical for multi-day battery operation. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz; suppresses switching noise from DC-DC converters feeding intermediate supply rails. |
| Output Noise | 230µVRMS (100Hz–100kHz); suitable for powering ADC references, VCOs, and low-noise op-amps without additional filtering. |
| Input Voltage Range | 2.0V to 6.0V; compatible with Li-ion (2.7–4.2V), LiFePO4 (2.0–3.6V), and regulated 3.3V/5V supplies. |
Pinout & Package
MAX8511EXK29+ is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm × 0.9mm, RoHS-compliant). The exposed pad is absent-only available in TDFN variants. Pin 1 is IN; Pin 2 is GND; Pin 3 is SHDN; Pin 4 is N.C.; Pin 5 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Unregulated input supply | Accepts 2.0V–6.0V; requires 1µF ceramic input capacitor for stability and line-transient suppression. |
| 2 - GND | Ground reference and thermal path | Must connect to PCB ground plane; serves as primary heat conduction path in SC70 package. |
| 3 - SHDN | Active-low enable/disable control | Pull ≤0.4V to disable; draws <0.01µA; connects to IN for always-on operation. |
| 4 - N.C. | No internal connection | Not bonded; must remain unconnected-no routing or soldering required. |
| 5 - OUT | Regulated 2.85V output | Delivers up to 120mA; requires 1µF ceramic output capacitor; high-impedance when SHDN asserted. |
Key Features
| Feature | Design Value |
|---|---|
| No BP capacitor required | Eliminates 10nF bypass cap and associated layout area-reduces BOM count and simplifies design vs. MAX8510. |
| Stable with 1µF ceramic capacitors | Enables use of small, low-cost X5R/X7R MLCCs on both input and output-no ESR tuning or tantalum substitution needed. |
| Ultra-low ground current | 40µA typical at light load and 220µA in dropout-minimizes battery depletion during idle or partial-load conditions. |
| Integrated protection | Current limit (130–300mA), thermal shutdown (+160°C), and safe short-circuit tolerance-no external protection circuitry required. |
| SC70-5 footprint | 2.0mm × 1.25mm body size-fits dense portable layouts where space is constrained, e.g., Bluetooth earbuds or wearables. |
Applications
| Wireless Audio Transceivers | Portable Medical Sensors |
|---|---|
Use Scenario: Powering 2.4GHz Bluetooth audio transceivers (e.g., CSR8675, Qualcomm QCC3040) in true wireless stereo (TWS) earbuds. IC Role / Device Role / Timing Role: Primary LDO supplying clean 2.85V to RF synthesizer, baseband processor I/O, and DAC analog core. Use Value: 72dB PSRR at 1kHz suppresses switching noise from buck converter powering digital subsystem; 230µVRMS noise prevents EVM degradation in 2-Mbps LE audio streams. |
Use Scenario: Regulating power for low-power ECG/PPG analog front-end ICs (e.g., AD8233, MAX30102) in wearable patch monitors. IC Role / Device Role / Timing Role: Dedicated analog rail LDO isolating sensitive biopotential amplifiers and optical sensor bias from noisy digital supply domains. Use Value: 40µA ground current extends battery life beyond 7 days on coin cell; 120mV dropout enables operation until battery voltage falls to 2.97V. |
| Digital Camera Image Sensors | Industrial Handheld Scanners |
Use Scenario: Supplying 2.85V to CMOS image sensor analog core and column ADC in compact action cameras. IC Role / Device Role / Timing Role: Low-noise bias source for pixel readout circuitry and correlated double sampling (CDS) stages. Use Value: 230µVRMS output noise directly limits temporal noise floor-critical for low-light SNR; SC70-5 footprint fits tight sensor module layouts. |
Use Scenario: Powering laser diode driver and CCD line-scan sensor in battery-operated barcode scanners. IC Role / Device Role / Timing Role: Stable 2.85V rail for precision current regulation and analog signal conditioning prior to digitization. Use Value: Guaranteed 120mA output supports pulsed laser drive; thermal shutdown prevents damage during extended trigger-hold events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS780285DRVR | 2.85V fixed, 150mA, 250mV dropout @150mA, 500nA IQ in shutdown, 30µVRMS noise (10Hz–100kHz), WSON-6 package. | Lower noise and deeper shutdown, but larger 2.0mm × 2.0mm package and higher dropout reduce battery runtime in space-constrained designs. | Select when ultra-low noise (<30µVRMS) is mandatory and board area permits WSON-6; avoid if SC70 footprint or <120mV dropout is required. |
| MCP1700-285TOE/MB | 2.85V fixed, 250mA, 600mV dropout @250mA, 1.3µA IQ, 40µVRMS noise (10Hz–100kHz), SOT-23-3 package. | Higher dropout and lower PSRR (60dB @1kHz); lacks shutdown pin-requires external FET for enable control. | Select for cost-sensitive, non-shutdown applications where dropout margin >600mV is acceptable; not suitable for noise-critical RF or precision analog rails. |
Compared with TPS780285DRVR and MCP1700-285TOE/MB, the MAX8511EXK29+ uniquely balances ultra-low ground current (40µA), SC70-5 footprint, no-bypass-capability, and 120mV dropout-making it optimal for compact, battery-limited RF and sensor systems where layout area and efficiency are co-prioritized.
Availability
MAX8511EXK29+ is available at Aetrix Electronics and suitable for wireless audio transceivers, portable medical sensors, digital camera image sensors, and industrial handheld scanners requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX8511EXK29+ 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 space-constrained, battery-powered devices demanding ultra-low noise, high PSRR, and minimal quiescent current-targeting cellular handsets, Bluetooth accessories, and portable instrumentation.
FAQ
What is the output voltage tolerance of the MAX8511EXK29+ over temperature and load?
The MAX8511EXK29+ guarantees ±3% output voltage accuracy over load current (100µA to 80mA) and temperature (-40°C to +85°C). At +25°C and 1mA load, typical deviation is ±1%. This ensures reliable operation of downstream 2.85V-tolerant circuits without external trimming or calibration.
Does the MAX8511EXK29+ require an external bypass capacitor on the BP pin?
No-the MAX8511EXK29+ does not include a BP (bypass) pin and requires no external bypass capacitor. Unlike the MAX8510, its architecture achieves stable 2.85V regulation using only input and output 1µF ceramic capacitors, reducing component count and PCB area.
What is the maximum allowable input voltage for the MAX8511EXK29+?
The MAX8511EXK29+ supports an absolute maximum input voltage of +7V, but its operational input range is specified from 2.0V to 6.0V. Operating above 6.0V risks exceeding absolute maximum ratings and may cause permanent damage-even briefly.
How does the MAX8511EXK29+ behave during shutdown?
When the SHDN pin is pulled low (<0.4V), the MAX8511EXK29+ disables its voltage reference, error amplifier, and pass transistor. Output goes high-impedance, and supply current drops below 1µA. The device exits shutdown within 300µs after SHDN rises above 1.5V.
Can the MAX8511EXK29+ be used with ceramic capacitors smaller than 1µF?
No-stability is guaranteed only with ≥1µF ceramic output capacitance (X5R/X7R dielectric). Using smaller values (e.g., 0.47µF) risks oscillation under certain load conditions, as confirmed by the "Region of Stable COUT ESR vs. Load Current" plot in the datasheet.
MAX8511EXK29+ 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):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.135V @ 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
MAX8511EXK29+ FAQ
1.How can I place an order for MAX8511EXK29+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK29+ 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 MAX8511EXK29+ reliable?
The price and inventory of MAX8511EXK29+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK29+ is usually 5 days.
3.What payment methods are accepted for MAX8511EXK29+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK29+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK29+?
MAX8511EXK29+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK29+ 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 MAX8511EXK29+?
For technical support, including MAX8511EXK29+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK29+ requirements.
6.How does Aetrix verify that MAX8511EXK29+ is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK29+ 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 MAX8511EXK29+ meets industry standards.
7.What is the process for return or replacement of MAX8511EXK29+?
All MAX8511EXK29+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK29+, 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 MAX8511EXK29+ part is unused and in its original packaging.
Return procedure for MAX8511EXK29+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8511EXK29+ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
