My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8511EXK33
- Part No.:
- MAX8511EXK33
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK33.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:3,312
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8511EXK33 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 input/output capacitors. It serves as a precision voltage source for noise-sensitive analog circuitry in portable RF and digital systems.
For engineers reviewing the MAX8511EXK33 datasheet, MAX8511EXK33 pinout, MAX8511EXK33 application, or MAX8511EXK33 equivalent, key selection criteria include its 3.3V fixed output, SC70-5 package footprint, no-bypass-capacitor architecture, 72dB PSRR at 1kHz, and guaranteed 120mA output capability under industrial temperature range.
Technical Context
The MAX8511EXK33 uses a P-channel MOSFET pass transistor (1Ω typical RDS(ON)) enabling low quiescent current and minimal dropout across load and temperature. Its error amplifier compares a 1.225V bandgap reference against internal feedback to regulate output without external resistors.
No BP pin is present - unlike the MAX8510 - eliminating need for bypass capacitor and reducing PCB area. Shutdown logic disables reference, error amp, and gate drive, dropping supply current below 1µA while placing OUT in high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% over -40°C to +85°C, enabling direct replacement of standard 3.3V logic rails |
| Max Output Current | 120mA guaranteed minimum, sufficient for powering RF transceivers, ADCs, or microcontroller cores |
| Dropout Voltage | 120mV at 120mA load, allowing operation down to VIN = 3.42V while maintaining regulation |
| Ground Current | 40µA typical at light load, extending battery life in always-on sensor nodes |
| PSRR | 72dB at 1kHz, rejecting switching noise from DC/DC converters feeding the input rail |
| Output Noise | 230µVRMS (100Hz–100kHz), suitable for powering PLLs, VCOs, and audio codecs |
| Input Voltage Range | 2V to 6V, compatible with single Li-ion, dual NiMH, or regulated 5V system rails |
Pinout & Package
MAX8511EXK33 is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm × 0.9mm), optimized for space-constrained portable designs. The exposed pad variant is not used in this orderable part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Unregulated input supply | Accepts 2V–6V input; requires 1µF ceramic decoupling close to pin |
| 2 - GND | Power and signal ground reference | Serves as primary thermal path; must connect to large copper area for thermal management |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.4V to disable regulator; draws <0.01µA bias current when asserted |
| 4 - N.C. | No internal connection | Not bonded; must remain unconnected on PCB to avoid parasitic coupling |
| 5 - OUT | Regulated 3.3V output | Delivers up to 120mA; bypassed with 1µF ceramic capacitor to GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| No-bypass-capacitor architecture | Eliminates BP pin and external 10nF capacitor, reducing component count and board area by ~15% |
| Stable with 1µF ceramic capacitors | Enables use of low-cost, small-footprint X5R/X7R MLCCs without ESR tuning or stability compromises |
| Ultra-low ground current | 40µA typical at light load ensures >1-year battery life in 10µA sleep-mode IoT endpoints |
| Integrated protection | Thermal shutdown (160°C) and current limit (130–300mA) prevent damage during fault conditions |
| High PSRR at audio frequencies | 72dB rejection at 1kHz suppresses ripple from buck converters powering baseband processors |
Applications
| Bluetooth Audio Transmitter | Portable Digital Camera Sensor Supply |
|---|---|
Use Scenario: Powering the RF front-end and codec in a Bluetooth headset with Li-ion battery input. IC Role / Device Role / Timing Role: Low-noise 3.3V LDO supplying VDD_IO and VDD_AFE for CSR8670-based audio SoC. Use Value: 230µVRMS output noise prevents audible hiss; 72dB PSRR blocks 1MHz switching noise from companion DC/DC converter. |
Use Scenario: Providing clean power to CMOS image sensor and ISP in compact action camera. IC Role / Device Role / Timing Role: Primary 3.3V analog supply for OV4689 sensor's analog core and PLL clock generation. Use Value: 120mV dropout extends usable battery range to 3.42V; 40µA ground current minimizes standby drain during video buffering. |
| Industrial Wireless Sensor Node | Medical Pulse Oximeter Analog Front-End |
Use Scenario: Regulating power for sub-GHz RF transceiver (e.g., CC1312) and ultra-low-power MCU in battery-operated condition monitoring node. IC Role / Device Role / Timing Role: Always-on 3.3V rail enabling fast wake-from-sleep response and accurate ADC reference stability. Use Value: Shutdown current <1µA allows multi-year deployment; SC70-5 footprint fits within 8mm² total PCB area budget. |
Use Scenario: Delivering interference-free 3.3V to photodiode transimpedance amplifier and 24-bit delta-sigma ADC in wearable SpO₂ monitor. IC Role / Device Role / Timing Role: Precision analog supply isolating sensitive analog signal chain from digital switching noise. Use Value: 230µVRMS noise floor ensures <1 LSB error in 20-bit ENOB measurements; thermal protection prevents drift during skin-contact operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B332MR-G | 3.3V fixed, 150mA output, 250mV dropout at 150mA, 12µVRMS noise (with BP cap), SC70-5 | Requires 10nF BP capacitor; lower noise but higher dropout limits battery end-of-life | Select when ultra-low noise is critical and board space allows BP cap; not drop-in due to BP pin presence |
| Analog Devices ADP125ARZ-3.3-R7 | 3.3V fixed, 500mA output, 135mV dropout at 500mA, 40µVRMS noise, SOT-23-5 | Higher current, larger SOT-23 footprint, different pinout (SHDN on Pin 1), 45µA quiescent current | Choose for higher load headroom and better noise performance; requires PCB redesign due to package and pinout mismatch |
Compared with the Torex XC6219B332MR-G and ADP125ARZ-3.3-R7, the MAX8511EXK33 offers optimal balance of ultra-small SC70-5 size, no-BP simplicity, and industrial-grade 120mA capability - making it preferred for space- and BOM-constrained 3.3V rail applications where moderate noise performance suffices.
Availability
MAX8511EXK33 is available at Aetrix Electronics and suitable for Bluetooth accessories, portable imaging systems, wireless sensor networks, and medical wearables requiring stable component supply across extended production lifecycles.
Supply support for MAX8511EXK33 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 battery-powered portable electronics needing ultra-low-noise, low-quiescent-current regulation in minimal PCB area - targeting cellular handsets, PDAs, and wireless peripherals.
FAQ
What is the maximum input voltage rating for MAX8511EXK33?
The MAX8511EXK33 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 violating internal device stress limits and is not guaranteed for functionality or reliability. For long-term robustness in 5V system designs, keep VIN ≤ 6V with appropriate derating margins.
Does MAX8511EXK33 require an external bypass capacitor like the MAX8510?
No, the MAX8511EXK33 does not require an external bypass capacitor. Unlike the MAX8510 (which features a BP pin), the MAX8511EXK33 omits the BP function entirely - confirmed by its pinout (Pin 4 = N.C.) and functional description. This simplifies design, reduces component count, and eliminates BP capacitor placement sensitivity, making it ideal for ultra-compact layouts.
What is the shutdown current specification for MAX8511EXK33 at +85°C?
The MAX8511EXK33 guarantees shutdown supply current of ≤0.05µA at +85°C, per Electrical Characteristics table. At +25°C, typical shutdown current is <0.01µA. This ultra-low leakage enables multi-year battery life in always-off or deep-sleep modes, critical for remote sensors and wearables where duty cycling is essential.
Can MAX8511EXK33 be used with ceramic output capacitors smaller than 1µF?
No - the MAX8511EXK33 is characterized and guaranteed stable only with ≥1µF ceramic output capacitance (X5R/X7R dielectric). Using smaller values (e.g., 0.47µF) may cause oscillation or poor transient response, especially near dropout. The datasheet explicitly states "stable with 1µF ceramic capacitor for any load," and stability testing was performed using exactly 1µF.
Is MAX8511EXK33 pin-compatible with other members of the MAX851x family?
The MAX8511EXK33 shares identical SC70-5 pinout with MAX8510 and MAX8512 variants in the same package, but functional pin assignments differ: MAX8510 uses Pin 4 as BP, MAX8511 uses Pin 4 as N.C., and MAX8512 uses Pin 4 as FB. Therefore, while physical footprint matches, electrical connectivity is not interchangeable - swapping requires schematic and layout revision to accommodate missing or repurposed pins.
MAX8511EXK33 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 FAQ
1.How can I place an order for MAX8511EXK33 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK33 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 reliable?
The price and inventory of MAX8511EXK33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK33 is usually 5 days.
3.What payment methods are accepted for MAX8511EXK33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK33?
MAX8511EXK33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK33 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?
For technical support, including MAX8511EXK33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK33 requirements.
6.How does Aetrix verify that MAX8511EXK33 is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK33 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 meets industry standards.
7.What is the process for return or replacement of MAX8511EXK33?
All MAX8511EXK33 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK33, 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 part is unused and in its original packaging.
Return procedure for MAX8511EXK33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8511EXK33 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
