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Analog Devices Inc./Maxim Integrated MAX8868EUK30+T
- Part No.:
- MAX8868EUK30+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8868EUK30+T.pdf
- Description:
- IC REG LINEAR 3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,895
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Product details
Overview
MAX8868EUK30+T from Maxim Integrated is a low-noise, low-dropout linear regulator with 3.0V preset output, 150mA output current capability, 30µVRMS output noise, 165mV dropout at full load, and integrated auto-discharge functionality. It operates from 2.5V to 6.5V input and targets battery-powered portable electronics requiring stable, quiet voltage regulation.
For engineers reviewing the MAX8868EUK30+T datasheet, MAX8868EUK30+T pinout, MAX8868EUK30+T application, or MAX8868EUK30+T equivalent, key selection criteria include its 10nA shutdown current, reverse battery protection, thermal shutdown at +155°C, SOT23-5 package compatibility, and BP-pin noise-filtering architecture for ultra-low-noise operation in sensitive analog and RF subsystems.
Technical Context
The MAX8868EUK30+T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) enabling low quiescent current (100µA) independent of load or dropout condition. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
Unlike the MAX8867, the MAX8868EUK30+T integrates active auto-discharge via internal NMOS between OUT and GND during SHDN assertion, reducing output decay time. The BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter with an external 0.01µF capacitor to suppress reference noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.00V ±1.4% - factory-preset, no external resistors required; enables compact layout in space-constrained portable designs. |
| Max Output Current | 150mA - sufficient for powering baseband processors, RF front-ends, or sensor signal chains without external current boosting. |
| Dropout Voltage | 165mV at 150mA - allows operation down to VIN = 3.165V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz) - achieved with 0.01µF BP capacitor; critical for noise-sensitive ADCs, PLLs, and audio codecs. |
| Shutdown Current | 10nA - reduces system standby power to negligible levels; supports multi-week battery shelf life in always-on IoT endpoints. |
| Auto-Discharge | Active OUT-to-GND discharge during SHDN - eliminates residual output voltage that could interfere with downstream power sequencing or cause latch-up. |
| Thermal Shutdown | +155°C with 15°C hysteresis - protects against sustained overload or poor PCB thermal design while permitting pulsed operation under transient overloads. |
Pinout & Package
SOT23-5 regular package (JEDEC MO-178AA), 2.9mm × 1.6mm footprint, 1.1mm height; GND pin serves dual role as electrical ground and thermal path - requires direct connection to large copper pour for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable/discharge control | Logic low (≤0.4V) disables regulator and activates internal discharge FET on MAX8868EUK30+T; connect to IN for always-on operation. |
| 2 - GND | Power ground and thermal sink | Must be soldered to ≥100mm² copper area to maintain junction temperature below +150°C at full load and ambient +85°C. |
| 3 - IN | Input supply connection | Accepts 2.5V–6.5V; requires ≥1µF ceramic bypass capacitor close to pin to suppress line transients and ensure stability. |
| 4 - OUT | Regulated output | Delivers up to 150mA; requires 1µF–10µF low-ESR output capacitor; auto-discharged to GND when SHDN = low. |
| 5 - BP | Noise-reduction bypass node | Connects to internal 200kΩ resistor; 0.01µF ceramic capacitor here reduces reference noise and achieves 30µVRMS output noise. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 30µVRMS output noise with 0.01µF BP cap - enables clean power for high-resolution SAR ADCs and low-phase-noise VCOs. |
| P-channel pass transistor | 1.1Ω RDS(ON), zero base-drive current - maintains 100µA quiescent current across all load and dropout conditions, maximizing battery runtime. |
| Reverse battery protection | Limits reverse current to ≤1mA if VIN or SHDN falls below GND - prevents damage during incorrect battery insertion in consumer handhelds. |
| Thermal and short-circuit protection | Self-limiting behavior at +155°C junction temp and indefinite output short - eliminates need for external fuses or current monitors in cost-sensitive designs. |
| Auto-discharge function | Internal NMOS actively pulls OUT to GND in shutdown - avoids floating outputs that could bias downstream CMOS inputs or trigger unintended wake events. |
Applications
| Cellular Baseband Power | RF Front-End Biasing |
|---|---|
|
Use Scenario: Supplying core voltage to GSM/UMTS baseband processors in smartphones and feature phones during active call mode and sleep states. IC Role / Device Role / Timing Role: Primary 3.0V LDO delivering regulated power to processor I/O and memory interfaces; auto-discharge ensures clean reset sequencing. Use Value: 10nA shutdown current extends standby time beyond 30 days; 30µVRMS noise prevents bit errors in high-speed serial links. |
Use Scenario: Providing clean bias to low-noise amplifiers (LNAs), mixers, and VCOs in cellular and Wi-Fi transceivers. IC Role / Device Role / Timing Role: Low-noise post-regulator after switching DC/DC converter; BP pin filtering suppresses switching ripple coupling into RF signal paths. Use Value: 63dB PSRR at 1kHz and 30µVRMS broadband noise minimize phase jitter and adjacent-channel interference in 5G FR1 bands. |
| Portable Medical Sensors | Industrial Handheld Terminals |
|
Use Scenario: Powering precision analog front-ends (AFE) in ECG, pulse oximeter, and glucose meter modules operating from coin cells. IC Role / Device Role / Timing Role: Ultra-low-quiescent LDO supplying 3.0V to 24-bit delta-sigma ADCs and instrumentation amplifiers; reverse battery protection guards against user-insertion errors. Use Value: 100µA operating IQ and 165mV dropout allow >90% battery utilization from 3.0V to 2.5V; ±1.4% output accuracy ensures calibrated measurement integrity. |
Use Scenario: Regulating power to microcontrollers, display drivers, and barcode scanners in ruggedized warehouse terminals and field service tools. IC Role / Device Role / Timing Role: Main system LDO with thermal shutdown and short-circuit resilience; SOT23-5 footprint supports automated assembly on dense 4-layer PCBs. Use Value: +155°C thermal shutdown and indefinite short-circuit tolerance eliminate field failures due to accidental probe shorts or ESD-induced latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8867EUK30+T | No auto-discharge; identical pinout, noise, dropout, and quiescent current - differs only in absence of OUT discharge FET. | Suitable where output hold-up is required during shutdown (e.g., preserving SRAM state); not appropriate for strict power sequencing. | Select MAX8867EUK30+T only if auto-discharge introduces timing conflicts with downstream power-good signals. |
| Torex XC6206P302MR | 300mA output, 250mV dropout at 150mA, 40µVRMS noise, no BP pin or auto-discharge; SOT23-5 compatible but different pin mapping (SHDN on pin 3). | Better current capacity but higher noise and no reverse battery protection - fits cost-driven consumer wearables with less stringent noise requirements. | Choose XC6206P302MR only when >150mA load headroom is mandatory and 10nA shutdown is not required. |
Compared with MAX8867EUK30+T, the MAX8868EUK30+T adds essential auto-discharge for robust power sequencing in multi-rail systems, while the XC6206P302MR trades noise performance and protection features for higher output current - making MAX8868EUK30+T optimal for noise-critical, battery-constrained portable instrumentation.
Availability
MAX8868EUK30+T is available at Aetrix Electronics and suitable for cellular telephones, portable medical sensors, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX8868EUK30+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 markets.
The MAX8867/MAX8868 product line was designed specifically for ultra-low-noise, low-quiescent-current regulation in space- and battery-constrained portable electronics - emphasizing dropout efficiency, shutdown integrity, and robustness in real-world battery reversal and thermal overload scenarios.
FAQ
What is the exact output voltage tolerance of the MAX8868EUK30+T?
The MAX8868EUK30+T has a factory-trimmed output voltage of 3.00V with ±1.4% accuracy over the full operating temperature range (-40°C to +85°C) and load current (0–150mA). This specification is production-tested and guaranteed per the datasheet's Electrical Characteristics table, ensuring consistent performance across units without external calibration.
Does the MAX8868EUK30+T require an external BP capacitor to achieve rated noise performance?
Yes - the MAX8868EUK30+T requires a 0.01µF ceramic capacitor connected between the BP pin and GND to achieve its specified 30µVRMS output noise (10Hz–100kHz). Omitting this capacitor increases noise to ~70µVRMS; using >0.1µF degrades startup time without further noise reduction, as confirmed in the Typical Operating Characteristics graphs.
How does the auto-discharge function operate in the MAX8868EUK30+T during shutdown?
When the SHDN pin is pulled low, the MAX8868EUK30+T disables the pass transistor and simultaneously turns on an internal NMOS switch between the OUT and GND pins. This provides a controlled discharge path with ~300Ω typical resistance, bringing the output voltage to <100mV within 1–2ms - preventing residual voltage from interfering with downstream logic or causing false wake events.
Can the MAX8868EUK30+T be used with input voltages below 2.5V?
No - the absolute minimum input voltage for the MAX8868EUK30+T is 2.5V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V may result in unregulated output, increased dropout, or failure to maintain regulation; the device is not characterized or guaranteed for sub-2.5V operation.
Is the MAX8868EUK30+T pin-compatible with the MAX8863/MAX8864 series?
Yes - the MAX8868EUK30+T is pin-compatible with the MAX8863 and MAX8864 in SOT23-5 packages, except for the BP pin (pin 5), which is a no-connect on MAX8863/64 but functional on MAX8868EUK30+T. All other pins (IN, GND, OUT, SHDN) share identical functions and placement, enabling drop-in replacement where BP functionality is unused or externally managed.
MAX8868EUK30+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 150mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 63dB (10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX8868EUK30+T FAQ
1.How can I place an order for MAX8868EUK30+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8868EUK30+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 MAX8868EUK30+T reliable?
The price and inventory of MAX8868EUK30+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8868EUK30+T is usually 5 days.
3.What payment methods are accepted for MAX8868EUK30+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8868EUK30+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8868EUK30+T?
MAX8868EUK30+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8868EUK30+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 MAX8868EUK30+T?
For technical support, including MAX8868EUK30+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8868EUK30+T requirements.
6.How does Aetrix verify that MAX8868EUK30+T is sourced from the original manufacturer or authorized distributors?
All MAX8868EUK30+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 MAX8868EUK30+T meets industry standards.
7.What is the process for return or replacement of MAX8868EUK30+T?
All MAX8868EUK30+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8868EUK30+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 MAX8868EUK30+T part is unused and in its original packaging.
Return procedure for MAX8868EUK30+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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