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Analog Devices Inc./Maxim Integrated MAX8511EXK26-T
- Part No.:
- MAX8511EXK26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8511EXK26-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX8511EXK26-T from Maxim Integrated is a preset 2.6V 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 using only 1µF ceramic input/output capacitors. It targets noise-sensitive analog and RF power rails in portable wireless devices.
For engineers reviewing the MAX8511EXK26-T datasheet, MAX8511EXK26-T pinout, MAX8511EXK26-T application, or MAX8511EXK26-T equivalent, key selection criteria include its no-bypass-capacitor architecture, guaranteed 120mA output, 2.6V fixed output, SC70-5 package footprint, and PSRR of 72dB at 1kHz for RF supply filtering.
Technical Context
The MAX8511EXK26-T uses a P-channel MOSFET pass transistor (typical RDS(ON) = 1Ω) enabling low dropout and minimal ground current across load and temperature. Its error amplifier compares a 1.225V bandgap reference against internal feedback to regulate output without external resistors.
No BP (bypass) pin is present - unlike the MAX8510 - eliminating need for external bypass capacitor and reducing PCB area. Shutdown logic disables reference, error amp, and gate drive, dropping quiescent current below 1µA while placing OUT in high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6V ±3% over -40°C to +85°C - ensures stable bias for 2.5V–2.7V logic or RF ICs without trimming. |
| Max Output Current | 120mA guaranteed - supports moderate-power analog circuits like ADC drivers or low-power transceivers. |
| Dropout Voltage | 120mV at 120mA load - enables operation down to VIN = 2.72V, extending battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Ground Current | 40µA typical at light load - minimizes standby power loss in always-on sensor or Bluetooth subsystems. |
| PSRR | 72dB at 1kHz, 46dB at 100kHz - suppresses switching noise from DC/DC converters feeding sensitive RF front-ends. |
| Input Voltage Range | 2V to 6V - compatible with Li-ion (2.7–4.2V), LiFePO4 (2.0–3.6V), and regulated 3.3V/5V rails. |
| Shutdown Current | <1µA - enables deep-sleep modes in portable equipment without compromising wake-up latency. |
Pinout & Package
MAX8511EXK26-T is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm × 0.95mm, 0.65mm pitch), with exposed pad omitted - distinct from TDFN variants. The package is RoHS-compliant and tape-and-reel ready.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Unregulated input supply | Accepts 2V–6V; requires 1µF ceramic decoupling close to pin for stability and noise rejection. |
| 2 - GND | Ground reference and thermal path | Primary return for load current and regulator core; must connect to solid ground plane for thermal performance. |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.4V to disable regulator; logic-high ≥1.5V enables operation; draws <0.01µA when asserted. |
| 4 - N.C. | No internal connection | Not bonded; must be left floating - no routing or soldering required. |
| 5 - OUT | Regulated 2.6V output | Delivers up to 120mA; requires 1µF ceramic capacitor to GND; high-impedance during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| No external bypass capacitor required | Eliminates BP pin and 10nF capacitor - reduces BOM count and PCB area by ~0.5mm² vs. MAX8510. |
| Stable with 1µF ceramic capacitors | Enables use of small, low-ESR X5R/X7R MLCCs on both IN and OUT - avoids larger tantalum or polymer caps. |
| Ultra-low ground current | 40µA typical at light load - extends battery runtime in intermittent-sensing applications like wearables. |
| Integrated protection | Thermal shutdown (160°C trigger, 10°C hysteresis) and current limit (130–300mA) prevent damage during fault conditions. |
| Fast shutdown exit | 300µs typical delay from SHDN high to 90% VOUT - supports rapid wake-up in duty-cycled systems. |
Applications
| Bluetooth Audio Transmitter | Portable Digital Camera Sensor Bias |
|---|---|
Use Scenario: Powers RF power amplifier and baseband IC in compact Bluetooth earpiece with single Li-ion cell. IC Role / Device Role / Timing Role: Low-noise 2.6V supply rail isolating RF section from noisy digital domains. Use Value: 72dB PSRR at 1kHz rejects switching noise from buck converter powering MCU, preventing audio artifacts. | Use Scenario: Supplies image sensor analog front-end requiring clean, stable voltage in space-constrained camera module. IC Role / Device Role / Timing Role: Fixed-output LDO providing precision bias for CCD/CMOS sensor analog circuitry. Use Value: 120mV dropout allows operation until battery drops to 2.72V, maximizing usable capacity per charge cycle. |
| Wireless LAN Client Module | Low-Power Industrial Sensor Node |
Use Scenario: Powers WLAN transceiver IC in IoT gateway with intermittent connectivity and long sleep intervals. IC Role / Device Role / Timing Role: Always-on 2.6V rail for crystal oscillator and RF synthesizer during deep-sleep mode. Use Value: <1µA shutdown current enables multi-year battery life in battery-operated Wi-Fi clients. | Use Scenario: Delivers regulated 2.6V to MEMS accelerometer and ultra-low-power microcontroller in predictive maintenance node. IC Role / Device Role / Timing Role: Primary analog supply for signal conditioning and ADC reference buffer. Use Value: 40µA ground current ensures sub-10µA system sleep current when MCU and sensor are idle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS78226DRVR | 2.6V fixed, 150mA output, 175mV dropout at 150mA, 1.5µA IQ, requires 2.2µF min COUT | Higher dropout and higher quiescent current - less suitable for single-cell Li-ion end-of-life operation. | Choose if higher output current margin is needed and board space allows larger output capacitor. |
| MCP1702T-2602E/MB | 2.6V fixed, 250mA output, 600mV dropout at 250mA, 2.5µA IQ, stable with 1µF COUT | Significantly higher dropout limits usable input range; lower PSRR (60dB @ 1kHz) reduces noise rejection. | Choose only for cost-sensitive, non-noise-critical applications where 2.6V regulation is primary requirement. |
Compared with TPS78226DRVR and MCP1702T-2602E/MB, the MAX8511EXK26-T offers superior dropout performance (120mV vs. ≥175mV), lower ground current (40µA vs. ≥1.5µA), and higher PSRR (72dB @ 1kHz), making it optimal for battery-powered RF and precision analog systems where efficiency and noise immunity are critical.
Availability
MAX8511EXK26-T is available at Aetrix Electronics and suitable for Bluetooth accessories, portable imaging modules, wireless LAN clients, and industrial sensor nodes requiring stable component supply with tight voltage tolerance and low-noise operation.
Supply support for MAX8511EXK26-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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, communications, and consumer applications.
The MAX8510/MAX8511/MAX8512 family was engineered specifically for space-constrained, battery-powered systems needing ultra-low-noise, low-quiescent-current regulation - targeting RF, audio, and sensor signal chains.
FAQ
What is the output voltage tolerance of the MAX8511EXK26-T over temperature and load?
The MAX8511EXK26-T guarantees ±3% output voltage accuracy over -40°C to +85°C and for load currents from 100µA to 80mA. At 25°C and 1mA load, typical deviation is ±1%. This tolerance ensures reliable operation of 2.5V–2.7V logic and analog circuits without external trimming. The MAX8511EXK26-T maintains this specification across its full operating range without requiring calibration.
Does the MAX8511EXK26-T require an external bypass capacitor?
No, the MAX8511EXK26-T does not require an external bypass capacitor. Unlike the MAX8510, it omits the BP pin and associated 10nF capacitor, simplifying layout and reducing component count. This design choice is confirmed in the General Description and Pin Description sections of the datasheet, which explicitly state "MAX8511 does not require a bypass capacitor." The MAX8511EXK26-T achieves low noise through internal architecture rather than external bypassing.
What is the minimum input voltage required for the MAX8511EXK26-T to maintain regulation at 120mA load?
The minimum input voltage for the MAX8511EXK26-T to maintain 2.6V regulation at 120mA load is 2.72V, calculated as VOUT + dropout = 2.6V + 0.12V. This value is derived from the Electrical Characteristics table, which specifies 120mV dropout at 120mA load. The MAX8511EXK26-T remains functional down to 2V input but enters dropout below 2.72V, causing output voltage to track input minus dropout.
Can the MAX8511EXK26-T be used with ceramic capacitors smaller than 1µF?
No - the MAX8511EXK26-T is specified and guaranteed stable only with ≥1µF ceramic output capacitance (X5R/X7R dielectric). The datasheet states "stable with 1µF ceramic capacitor for any load" and warns that Z5U/Y5V dielectrics may require ≥2.2µF below -10°C. Using smaller capacitors risks instability, oscillation, or degraded transient response. The MAX8511EXK26-T's compensation is optimized for 1µF, and deviation voids performance guarantees.
How does the shutdown function behave on the MAX8511EXK26-T?
When SHDN is pulled low (≤0.4V), the MAX8511EXK26-T disables its voltage reference, error amplifier, gate drive, and pass transistor, reducing supply current to <1µA and placing the OUT pin in high-impedance state. Pulling SHDN high (≥1.5V) restores regulation with 300µs typical startup delay. The MAX8511EXK26-T draws <0.01µA from SHDN pin itself, enabling direct GPIO control without loading the driver.
MAX8511EXK26-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):
- 2.6V
- 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
MAX8511EXK26-T FAQ
1.How can I place an order for MAX8511EXK26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8511EXK26-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 MAX8511EXK26-T reliable?
The price and inventory of MAX8511EXK26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8511EXK26-T is usually 5 days.
3.What payment methods are accepted for MAX8511EXK26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8511EXK26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8511EXK26-T?
MAX8511EXK26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8511EXK26-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 MAX8511EXK26-T?
For technical support, including MAX8511EXK26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8511EXK26-T requirements.
6.How does Aetrix verify that MAX8511EXK26-T is sourced from the original manufacturer or authorized distributors?
All MAX8511EXK26-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 MAX8511EXK26-T meets industry standards.
7.What is the process for return or replacement of MAX8511EXK26-T?
All MAX8511EXK26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8511EXK26-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 MAX8511EXK26-T part is unused and in its original packaging.
Return procedure for MAX8511EXK26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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