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Analog Devices Inc./Maxim Integrated MAX8867EUK30
- Part No.:
- MAX8867EUK30
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8867EUK30.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:10,920
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Product details
Overview
MAX8867EUK30 from Maxim Integrated is a low-noise, low-dropout linear regulator with 3.0V preset output, 150mA output current capability, 30µVRMS output noise, and 165mV dropout at full load. It uses an internal P-channel MOSFET pass transistor and operates from 2.5V to 6.5V input, targeting battery-powered handheld instruments and PCMCIA cards.
For engineers reviewing the MAX8867EUK30 datasheet, MAX8867EUK30 pinout, MAX8867EUK30 application, or MAX8867EUK30 equivalent, key selection criteria include guaranteed ±1.4% output accuracy over temperature, 10nA shutdown current, reverse battery protection, and SOT23-5 package compatibility with MAX8863/MAX8864 footprints.
Technical Context
The MAX8867EUK30 implements a bandgap-referenced error amplifier driving a P-channel MOSFET pass element, enabling ultra-low quiescent current (100µA) independent of load or dropout condition. Its BP pin integrates a 200kΩ resistor forming an 80Hz RC filter with an external 0.01µF capacitor to suppress reference noise.
Thermal shutdown activates at +155°C with +15°C hysteresis, and current limiting clamps output at 160mA minimum (390mA typical). Reverse battery protection limits reverse current to 1mA when VIN or SHDN falls below GND, disconnecting internal circuitry and parasitic paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±1.4% - factory-preset, stable across -40°C to +85°C operating range |
| Max Output Current | 150mA - supports sustained loads in portable instrumentation without thermal derating |
| Dropout Voltage | 165mV at 150mA - enables operation down to 3.165V input for 3.0V output, extending battery life |
| Output Noise | 30µVRMS (10Hz–100kHz) - achieved with 0.01µF BP capacitor, suitable for RF-sensitive analog circuits |
| Quiescent Current | 100µA - constant across load and dropout, critical for long standby time in battery systems |
| Shutdown Current | 10nA - logic-controlled disable reduces system leakage to negligible levels |
| Input Voltage Range | 2.5V to 6.5V - compatible with single Li-ion, dual Alkaline/NiMH, or regulated 3.3V/5V rails |
Pinout & Package
SOT23-5 regular package (JEDEC MO-178AA), 2.9mm × 1.6mm footprint, 1.1mm height, GND pin serves as thermal pad requiring solder connection to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Logic low disables regulator and reduces supply current to 10nA; not auto-discharge (MAX8868 only) |
| 2 - GND | Power ground & thermal path | Electrical return and primary heat dissipation path; must connect to large copper area |
| 3 - IN | Input voltage supply | Accepts 2.5V–6.5V; requires 1µF bypass capacitor to GND for stability and noise rejection |
| 4 - OUT | Regulated output | Delivers up to 150mA at 3.0V; requires 1–10µF output capacitor with ESR < 0.2Ω |
| 5 - BP | Reference noise bypass | Connects to internal 200kΩ resistor; 0.01µF ceramic capacitor reduces output noise by filtering bandgap reference |
Key Features
| Feature | Design Value |
|---|---|
| Reverse battery protection | Limits reverse current to ≤1mA when VIN or SHDN < GND, preventing damage in miswired battery compartments |
| Thermal shutdown with hysteresis | Triggers at +155°C and re-enables only after cooling to +140°C, preventing thermal oscillation during overload |
| P-channel MOSFET pass element | Eliminates base-drive current loss, enabling 100µA quiescent current even in dropout or no-load conditions |
| Factory-trimmed output accuracy | ±1.4% over full -40°C to +85°C range ensures reliable power delivery without external feedback components |
| Stable with low-ESR ceramics | Operates reliably with 1µF X7R/X5R capacitors across full temperature range, reducing BOM count vs. tantalum alternatives |
Applications
| Hand-Held Instruments | PCMCIA Cards |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by two AA batteries with dynamic load switching between measurement and display modes. IC Role / Device Role / Timing Role: Primary 3.0V supply regulator delivering clean, low-noise power to precision ADCs and microcontrollers. Use Value: 30µVRMS noise and 100µA quiescent current extend battery life beyond 100 hours while maintaining measurement integrity. | Use Scenario: Hot-pluggable PCMCIA memory or modem cards requiring immediate, stable 3.0V rail upon insertion into laptop slots. IC Role / Device Role / Timing Role: Local LDO providing regulated 3.0V from host-supplied 3.3V or 5V, with fast startup and load-transient immunity. Use Value: 165mV dropout allows operation from 3.165V input, ensuring regulation even under worst-case slot voltage sag. |
| Cordless Telephones | Electronic Planners |
Use Scenario: Base station and handset subsystems drawing pulsed current during RF transmission and audio playback. IC Role / Device Role / Timing Role: Low-noise 3.0V supply for RF front-end ICs and audio codecs, isolated from noisy digital domains. Use Value: 63dB PSRR at low frequencies suppresses coupling from digital switching noise into sensitive analog signal paths. | Use Scenario: Memory-backed PDAs with real-time clock and SRAM retention during sleep, requiring ultra-low leakage in shutdown. IC Role / Device Role / Timing Role: Always-on 3.0V regulator for RTC and backup memory, controlled via SHDN pin by system controller. Use Value: 10nA shutdown current prevents measurable battery drain over months of storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8863EUK30 | No BP pin; higher 50µVRMS noise; same 3.0V output, 150mA rating, and SOT23-5 footprint | Lacks BP-based noise filtering - unsuitable where sub-50µVRMS noise is required | Select MAX8863EUK30 only if noise budget allows ≥50µVRMS and BP pin is unused in layout |
| MCP1700T-3002E/MB | 3.0V fixed, 250mA rating, 175mV dropout at 250mA, 35µVRMS noise, SOT23-3 package (no BP or SHDN pins) | 3-pin package eliminates shutdown control and noise optimization; higher dropout reduces usable battery range | Choose MCP1700T-3002E/MB only for cost-sensitive, non-shutdown, non-ultra-low-noise applications with ample input headroom |
Compared with MAX8867EUK30, MAX8863EUK30 sacrifices noise performance for pin count reduction, while MCP1700T-3002E/MB trades shutdown control and BP-based noise filtering for lower unit cost and higher current - neither offers drop-in replacement due to pinout or feature gaps.
Availability
MAX8867EUK30 is available at Aetrix Electronics and suitable for hand-held instruments, PCMCIA cards, cordless telephones, and electronic planners requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX8867EUK30 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 high-performance analog and mixed-signal semiconductor solutions for power, interface, sensing, and timing applications.
The MAX8867 series belongs to Maxim's ultra-low-noise LDO portfolio, engineered specifically for battery-powered portable electronics demanding high accuracy, low quiescent current, and robust protection features.
FAQ
What is the output voltage tolerance of the MAX8867EUK30 over temperature?
The MAX8867EUK30 guarantees ±1.4% output voltage accuracy across its full operating temperature range of -40°C to +85°C. This specification is production-tested at +25°C and correlated over temperature using Statistical Quality Control methods. The 3.0V output remains within 2.958V to 3.042V under all specified conditions, ensuring reliable power delivery to precision analog and digital loads without external trimming.
Does the MAX8867EUK30 include reverse battery protection?
Yes, the MAX8867EUK30 includes integrated reverse battery protection that limits reverse current to ≤1mA when either the IN or SHDN pin falls below GND potential. This protection actively disconnects internal circuitry and parasitic conduction paths, preventing damage in cases of incorrect battery insertion or polarity reversal - a critical feature for consumer handheld devices where user error is common.
What capacitor values are required for stable operation of the MAX8867EUK30?
For stable operation, the MAX8867EUK30 requires a 1µF input capacitor (CIN) and a 1µF to 10µF output capacitor (COUT) with ESR < 0.2Ω. A 0.01µF ceramic capacitor must be placed on the BP pin to achieve 30µVRMS noise performance. X7R or X5R dielectric ceramics are recommended for COUT to ensure stable capacitance across temperature; Z5U/Y5V types may require ≥2.2µF for low-temperature stability.
How does the BP pin function in the MAX8867EUK30?
The BP pin in the MAX8867EUK30 connects internally to a 200kΩ resistor, forming an 80Hz low-pass filter with an external 0.01µF capacitor to suppress bandgap reference noise. This configuration reduces output voltage noise to 30µVRMS (10Hz–100kHz). Increasing BP capacitance slightly lowers noise but increases startup time; values above 0.1µF provide no benefit and are not recommended per the datasheet.
Is the MAX8867EUK30 pin-compatible with the MAX8863 series?
The MAX8867EUK30 is pin-compatible with the MAX8863 series in the SOT23-5 package except for the BP pin: MAX8867EUK30 has a dedicated BP pin (Pin 5) for noise filtering, while MAX8863 lacks this pin and routes GND to Pin 5. Layouts designed for MAX8863 cannot directly accommodate MAX8867EUK30 without modifying the PCB to isolate Pin 5 and route it to a 0.01µF capacitor, though both share identical IN, GND, OUT, and SHDN pin assignments.
MAX8867EUK30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- 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
MAX8867EUK30 FAQ
1.How can I place an order for MAX8867EUK30 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EUK30 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 MAX8867EUK30 reliable?
The price and inventory of MAX8867EUK30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EUK30 is usually 5 days.
3.What payment methods are accepted for MAX8867EUK30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EUK30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EUK30?
MAX8867EUK30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EUK30 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 MAX8867EUK30?
For technical support, including MAX8867EUK30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EUK30 requirements.
6.How does Aetrix verify that MAX8867EUK30 is sourced from the original manufacturer or authorized distributors?
All MAX8867EUK30 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 MAX8867EUK30 meets industry standards.
7.What is the process for return or replacement of MAX8867EUK30?
All MAX8867EUK30 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EUK30, 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 MAX8867EUK30 part is unused and in its original packaging.
Return procedure for MAX8867EUK30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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