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Analog Devices Inc./Maxim Integrated MAX8891EXK30+T
- Part No.:
- MAX8891EXK30+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX8891EXK30+T.pdf
- Description:
- IC REG LINEAR 3V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,270
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Product details
Overview
MAX8891EXK30+T from Maxim Integrated is a fixed-output, low-dropout linear regulator delivering 3.0V at up to 150mA with 120mV dropout at 120mA load, 40µA ground current, and 65dB PSRR at 10kHz - designed for space-constrained battery-powered systems such as portable radios and digital cameras.
For engineers reviewing the MAX8891EXK30+T datasheet, MAX8891EXK30+T pinout, MAX8891EXK30+T application, or MAX8891EXK30+T equivalent, key selection criteria include guaranteed 150mA output capability, SC70-5 package footprint, 1µF ceramic capacitor stability, shutdown current <1µA, and preset 3.0V output without external feedback components.
Technical Context
The MAX8891EXK30+T uses an internal p-channel MOSFET pass transistor (RDS(ON) ≈ 1Ω) enabling low dropout and minimal ground current across load and temperature. Its bandgap reference (1.225V) feeds an error amplifier that controls gate drive to maintain regulation without base-drive losses typical of PNP-based LDOs.
It operates within 2V–6V input range and delivers ±3% output voltage accuracy over -40°C to +85°C. Shutdown logic disables the reference, error amplifier, and pass transistor, reducing supply current to <0.05µA at +85°C while placing OUT in high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±3% - factory-trimmed, no external resistors required. |
| Max Output Current | 150mA continuous - supports moderate-power RF and sensor subsystems. |
| Dropout Voltage | 120mV at 120mA - enables operation down to 3.12V input when powering 3.0V loads. |
| Ground Current | 40µA at light load - extends battery life in standby and low-duty-cycle applications. |
| PSRR | 65dB at 10kHz - suppresses switching noise from DC-DC converters feeding its input. |
| Stability | Guaranteed with 1µF ceramic output capacitor - eliminates need for tantalum or large bulk caps. |
| Shutdown Current | <0.05µA at +85°C - meets ultra-low-power system sleep requirements. |
Pinout & Package
MAX8891EXK30+T is housed in a 5-pin SC70 package (2.0mm × 1.25mm × 0.9mm), optimized for minimal PCB area and thermal performance via GND pad conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Unregulated Input Supply | Accepts 2V–6V input; requires 1µF ceramic bypass to GND near pin. |
| 2 - GND | Ground Reference & Thermal Path | Primary return path and main heat dissipation route; must connect to large copper area. |
| 3 - SHDN | Active-Low Enable Control | Pull ≤0.4V to disable regulator; >1.5V for normal operation; draws ≤0.01µA bias current. |
| 4 - N.C. | No Internal Connection | Not bonded; left floating or unconnected on PCB - no routing or pull-up/down required. |
| 5 - OUT | Regulated 3.0V Output | Delivers up to 150mA; bypassed with 1µF ceramic capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| SC70-5 footprint | 2.0mm × 1.25mm package - saves >50% board area vs. SOT-23, ideal for compact handhelds. |
| 1µF ceramic stability | No ESR constraints or minimum capacitance beyond 1µF - simplifies BOM and layout. |
| P-channel pass transistor | Eliminates base-drive current loss - maintains 40µA ground current even at full 150mA load. |
| Overcurrent & thermal protection | 200mA current limit and 160°C thermal shutdown with 10°C hysteresis - enables robust fault tolerance. |
| Low-noise operation | 230µV RMS output noise (100Hz–100kHz) - suitable for analog sensors and RF VCO supplies. |
Applications
| Bluetooth Portable Radio | Digital Camera Core Logic |
|---|---|
|
Use Scenario: Powering Bluetooth baseband IC and RF transceiver in compact wireless headset. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying noise-sensitive RF and digital blocks from single-cell Li-ion. Use Value: 65dB PSRR at 10kHz rejects switching noise from buck converter powering other rails; 120mV dropout extends usable battery range. |
Use Scenario: Regulating 3.0V for image signal processor (ISP) and memory interface in point-and-shoot camera. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO ensuring stable core voltage during burst capture and display refresh. Use Value: 230µV RMS noise prevents image artifacts; 1µF ceramic stability avoids capacitor aging issues common with tantalum. |
| Portable Medical Sensor | Industrial Handheld Terminal |
|
Use Scenario: Supplying precision analog front-end (AFE) and microcontroller in wearable ECG monitor. IC Role / Device Role / Timing Role: Ultra-low-quiescent LDO maintaining 3.0V rail during multi-day battery operation with periodic wake-ups. Use Value: 40µA ground current minimizes standby drain; <0.05µA shutdown current enables multi-week shelf life. |
Use Scenario: Providing regulated 3.0V to barcode scanner engine and touch controller in ruggedized field terminal. IC Role / Device Role / Timing Role: Robust LDO with thermal and overcurrent protection operating across -40°C to +85°C industrial range. Use Value: Guaranteed 150mA output supports pulsed laser driver loads; SC70 package withstands mechanical shock and reflow cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P302MR | 3.0V fixed, 150mA, 250mV dropout at 100mA, SOT-25 package (2.9mm × 2.8mm). | Larger footprint and higher dropout reduce battery runtime in space-critical designs. | Choose only if SC70 assembly is unavailable; verify thermal derating at 150mA in target PCB layout. |
| Diodes Inc. AP2112K-3.0W5 | 3.0V fixed, 600mA, 350mV dropout at 300mA, SOT-25 package, 60dB PSRR at 10kHz. | Higher current rating and PSRR trade-off for larger size and 10× higher ground current (400µA). | Select when future-proofing for higher load or needing margin on transient response; not optimal for ultra-low-power use. |
Compared with XC6206P302MR and AP2112K-3.0W5, the MAX8891EXK30+T uniquely balances ultra-small SC70-5 size, 120mV dropout, and 40µA quiescent current - making it optimal for miniaturized, battery-limited devices where every µA and mm² matters.
Availability
MAX8891EXK30+T is available at Aetrix Electronics and suitable for Bluetooth accessories, digital cameras, portable medical sensors, and industrial handheld terminals requiring stable component supply with RoHS-compliant packaging and automotive-grade traceability options.
Supply support for MAX8891EXK30+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 applications.
The MAX8891/MAX8892 family was engineered for ultra-compact, battery-powered portable electronics - prioritizing minimal quiescent current, small-footprint packaging, and ceramic-capacitor compatibility without sacrificing output accuracy or protection features.
FAQ
What is the output voltage tolerance of the MAX8891EXK30+T over temperature and load?
The MAX8891EXK30+T guarantees ±3% output voltage accuracy across -40°C to +85°C ambient temperature and for load currents from 100μA to 80mA. At room temperature, typical deviation is within ±0.2% over the full 150mA range, as confirmed by load-regulation testing showing 0.003%/mA drift. This ensures reliable operation for 3.0V logic and analog circuits without external trimming.
Can the MAX8891EXK30+T be used with input voltages below 2.5V?
No - the MAX8891EXK30+T requires a minimum input voltage of 2.0V per Absolute Maximum Ratings, but functional regulation at 3.0V output demands VIN ≥ VOUT + dropout. With 120mV dropout at 120mA, the lowest usable input is ~3.12V. Below 2.0V, the device may not power up or could behave unpredictably; operation outside 2V–6V violates specification limits.
Does the MAX8891EXK30+T require an external feedback resistor network?
No - the MAX8891EXK30+T is a factory-preset, fixed-output variant with internal feedback divider set to 3.0V. Unlike the adjustable MAX8892, it has no FB pin and uses Pin 4 as N.C. (not internally connected). No external resistors are needed, simplifying design and reducing BOM count versus adjustable LDOs.
How does the MAX8891EXK30+T behave during thermal overload?
When junction temperature exceeds +160°C, the MAX8891EXK30+T activates thermal shutdown, turning off the pass transistor and forcing output into high-impedance state. After cooling by 10°C (to ~150°C), it automatically resumes regulation. This hiccup-mode behavior protects the device during sustained overload but requires thermal design to avoid continuous cycling in final application.
Is the MAX8891EXK30+T compatible with 100% ceramic output capacitors?
Yes - the MAX8891EXK30+T is explicitly characterized and guaranteed stable with 1µF X7R or X5R ceramic capacitors across all loads and temperatures. The datasheet confirms no ESR minimum requirement, unlike many older LDOs. Z5U/Y5V dielectrics may require ≥2.2µF below -10°C, but standard X7R 1µF parts fully satisfy stability requirements.
MAX8891EXK30+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 120mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (10kHz)
- 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
MAX8891EXK30+T FAQ
1.How can I place an order for MAX8891EXK30+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8891EXK30+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 MAX8891EXK30+T reliable?
The price and inventory of MAX8891EXK30+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8891EXK30+T is usually 5 days.
3.What payment methods are accepted for MAX8891EXK30+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8891EXK30+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8891EXK30+T?
MAX8891EXK30+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8891EXK30+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 MAX8891EXK30+T?
For technical support, including MAX8891EXK30+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8891EXK30+T requirements.
6.How does Aetrix verify that MAX8891EXK30+T is sourced from the original manufacturer or authorized distributors?
All MAX8891EXK30+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 MAX8891EXK30+T meets industry standards.
7.What is the process for return or replacement of MAX8891EXK30+T?
All MAX8891EXK30+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8891EXK30+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 MAX8891EXK30+T part is unused and in its original packaging.
Return procedure for MAX8891EXK30+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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