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Analog Devices Inc./Maxim Integrated MAX8867EUK27
- Part No.:
- MAX8867EUK27
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8867EUK27.pdf
- Description:
- LOW-NOISE, LOW-DROPOUT, 150MILLI
- Quantity:
- Payment:
- Shipping:
Inventory:1,616
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Product details
Overview
MAX8867EUK27 from Maxim Integrated is a low-noise, low-dropout linear regulator with a preset 2.7V output, 2.5V–6.5V input range, 150mA max output current, 30µVRMS output noise, and 165mV dropout at full load. It uses an internal P-channel MOSFET pass transistor and operates in battery-powered portable electronics requiring stable, quiet voltage regulation.
For engineers reviewing the MAX8867EUK27 datasheet, MAX8867EUK27 pinout, MAX8867EUK27 application, or MAX8867EUK27 equivalent, key selection criteria include output noise performance, shutdown quiescent current (10nA), thermal and short-circuit protection, reverse battery tolerance, and SOT23-5 package compatibility with legacy MAX8863/64 designs.
Technical Context
The MAX8867EUK27 implements a fixed-output LDO architecture with a 1.25V bandgap reference, error amplifier, and internal resistor divider setting VOUT = 2.7V. Its P-channel MOSFET pass device delivers 100µA operating supply current independent of load or dropout condition.
It features dedicated BP pin for noise filtering via external 0.01µF capacitor, logic-controlled active-low SHDN with 10nA shutdown current, and integrated protections including thermal shutdown (155°C trip), current limit (160–390mA), and reverse battery protection limiting reverse current to 1mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.7V ±1.4% - factory-preset, no external feedback required |
| Input Voltage Range | 2.5V to 6.5V - supports single Li-ion, dual Alkaline/NiMH, or regulated 3.3/5V rails |
| Max Output Current | 150mA - sufficient for RF front-ends, microcontroller cores, and sensor interfaces |
| Dropout Voltage | 165mV at 150mA - enables operation down to ~2.865V input for 2.7V output |
| Output Noise | 30µVRMS (10Hz–100kHz) - low enough for ADC references and RF power amplifiers |
| Quiescent Current | 100µA (operating), 10nA (shutdown) - extends battery life in sleep modes |
| Protection Features | Thermal shutdown (155°C), short-circuit, reverse battery (≤1mA reverse current) |
Pinout & Package
SOT23-5 regular package (JEDEC MO-178AA), 5-pin surface-mount, 2.9mm × 1.6mm footprint, 1.1mm height. GND pin serves as electrical ground and thermal heatsink - requires soldering to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Pulls supply current to 10nA when low; no auto-discharge (MAX8868 only) |
| 2 - GND | Ground reference & thermal path | Must connect to large copper area for heat dissipation and noise reduction |
| 3 - IN | Input voltage supply | Accepts 2.5V–6.5V; bypass with ≥1µF ceramic capacitor to GND |
| 4 - OUT | Regulated output | Delivers up to 150mA; requires ≥1µF low-ESR output capacitor |
| 5 - BP | Noise filter bypass node | Connects to 0.01µF ceramic capacitor to reduce output noise to 30µVRMS |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 30µVRMS output noise with 0.01µF BP capacitor - enables clean analog/RF supply rails |
| P-channel MOSFET pass element | 100µA quiescent current independent of load or dropout - maximizes battery runtime |
| Reverse battery protection | Limits reverse current to ≤1mA when VIN or SHDN < 0V - prevents damage in miswired battery compartments |
| Thermal and short-circuit safety | 155°C thermal shutdown with 15°C hysteresis and indefinite short-circuit tolerance - ensures robust field operation |
| Preset output accuracy | ±1.4% over -40°C to +85°C - eliminates need for external resistors or trimming |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering baseband processor core and RF transceiver sections in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary 2.7V LDO supplying noise-sensitive analog blocks and digital logic domains. Use Value: 30µVRMS noise and 165mV dropout extend usable battery voltage range while maintaining signal integrity for ADCs and PLLs. | Use Scenario: Providing regulated 2.7V supply to PCMCIA card controllers and interface logic in laptops. IC Role / Device Role / Timing Role: Standby and active-mode voltage regulator with ultra-low shutdown current. Use Value: 10nA shutdown current minimizes battery drain during card ejection or host sleep states. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Supplying precision analog front-end (AFE) and microcontroller in portable multimeters or data loggers. IC Role / Device Role / Timing Role: Low-drift, low-noise bias source for op-amps and reference buffers. Use Value: ±1.4% output accuracy and minimal load/line regulation (0.01%/mA, 0.15%/V) ensure measurement repeatability across battery discharge. | Use Scenario: Regulating 2.7V for LCD controller and memory interface in early PDAs and palmtops. IC Role / Device Role / Timing Role: Compact, thermally efficient voltage source in space-constrained SMT layouts. Use Value: SOT23-5 footprint and GND-as-heatsink design allow reliable 150mA delivery without thermal derating in sealed enclosures. |
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 |
|---|---|---|---|
| MAX8863EUK27 | Same pinout and 2.7V output, but lacks BP pin and achieves 50µVRMS noise; higher 200µA quiescent current | No BP capacitor needed; less suitable for ultra-low-noise analog rails | Select when board space or BOM count must be minimized and 50µVRMS noise is acceptable |
| MCP1700T-2702E/MB | 2.7V fixed output, 250mA rating, 60µVRMS noise, 1.6µA quiescent current, SOT23-3 package (no BP or SHDN pins) | Lower IQ but no shutdown control or BP noise filtering; incompatible pinout | Select for cost-sensitive, always-on applications where shutdown and ultra-low noise are not required |
Compared with MAX8863EUK27, the MAX8867EUK27 provides superior noise performance and lower operating current; compared with MCP1700T-2702E/MB, it offers active shutdown, BP-based noise reduction, and tighter output accuracy - critical for portable RF and precision analog systems.
Availability
MAX8867EUK27 is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, hand-held instruments, and palmtop computers requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for MAX8867EUK27 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 ICs for power, sensing, connectivity, and security applications.
The MAX8867 series belongs to Maxim's low-noise LDO regulator product line, engineered specifically for battery-powered portable electronics demanding ultra-low noise, low quiescent current, and robust protection in compact SOT23 packages.
FAQ
What is the output voltage tolerance of the MAX8867EUK27 over temperature and load?
The MAX8867EUK27 guarantees ±1.4% output voltage accuracy over the full -40°C to +85°C operating temperature range and for load currents from 0mA to 150mA. This specification includes initial accuracy, line regulation (±0.15%/V), and load regulation (±0.04%/mA), ensuring stable 2.7V delivery across battery discharge and varying system loads without external trimming.
Does the MAX8867EUK27 include reverse battery protection, and how does it function?
Yes, the MAX8867EUK27 includes integrated reverse battery protection that limits reverse current to ≤1mA when either the IN or SHDN pin falls below ground potential. This is achieved by disconnecting internal circuitry and parasitic paths, preventing damage during incorrect battery insertion - a critical feature for consumer handheld devices where user-replaceable batteries are common.
What capacitor values are required for stable operation of the MAX8867EUK27?
The MAX8867EUK27 requires a minimum 1µF ceramic input capacitor (CIN) and a 1µF–10µF ceramic output capacitor (COUT) with ESR < 0.2Ω. A 0.01µF ceramic capacitor must be placed on the BP pin to achieve 30µVRMS noise. X7R or X5R dielectrics are recommended for stable capacitance across temperature; Z5U/Y5V types may require ≥2.2µF for low-temperature stability.
How does the MAX8867EUK27 behave during thermal overload conditions?
When junction temperature exceeds +155°C, the MAX8867EUK27 activates thermal shutdown, turning off the pass transistor. After cooling by 15°C (hysteresis), it automatically resumes regulation. During sustained overload, this results in pulsed output - protecting the device without latch-up. The GND pin must be soldered to a large PCB copper area to maintain safe junction temperatures under 150mA load.
Is the MAX8867EUK27 pin-compatible with other regulators in the MAX886x family?
Yes, the MAX8867EUK27 is pin-compatible with the MAX8863 and MAX8864 in SOT23-5 packages, except for the BP pin (not present on MAX8863/64). This allows drop-in replacement in existing designs when enhanced noise performance is needed, provided the BP capacitor is added and layout accommodates the fifth pin.
MAX8867EUK27 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.7V
- 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
MAX8867EUK27 FAQ
1.How can I place an order for MAX8867EUK27 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EUK27 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 MAX8867EUK27 reliable?
The price and inventory of MAX8867EUK27 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EUK27 is usually 5 days.
3.What payment methods are accepted for MAX8867EUK27?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EUK27 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EUK27?
MAX8867EUK27 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EUK27 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 MAX8867EUK27?
For technical support, including MAX8867EUK27 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EUK27 requirements.
6.How does Aetrix verify that MAX8867EUK27 is sourced from the original manufacturer or authorized distributors?
All MAX8867EUK27 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 MAX8867EUK27 meets industry standards.
7.What is the process for return or replacement of MAX8867EUK27?
All MAX8867EUK27 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EUK27, 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 MAX8867EUK27 part is unused and in its original packaging.
Return procedure for MAX8867EUK27:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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