My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8867EZK25+
- Part No.:
- MAX8867EZK25+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8867EZK25+.pdf
- Description:
- IC REG LIN 2.5V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,823
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8867EZK25+ from Maxim Integrated is a low-noise, low-dropout linear regulator with 2.5V fixed output, 150mA output current capability, 30µVRMS output noise, and 165mV dropout at full load. It uses an internal P-channel MOSFET pass transistor, operates from 2.5V to 6.5V input, and features 10nA logic-controlled shutdown - ideal for battery-powered handheld instruments requiring stable, ultra-low-noise power.
For engineers reviewing the MAX8867EZK25+ datasheet, MAX8867EZK25+ pinout, MAX8867EZK25+ application, or MAX8867EZK25+ equivalent, key selection criteria include output voltage accuracy (±1.4%), thermal shutdown behavior (155°C trip), reverse battery protection, and BP-pin noise-filtering configuration using 0.01µF ceramic capacitor.
Technical Context
The MAX8867EZK25+ implements a bandgap-referenced error amplifier driving a P-channel MOSFET pass element with 1.1Ω typical RDS(ON). Its feedback network is fully internal, setting VOUT = 2.5V without external resistors.
It integrates reverse-battery protection limiting reverse current to ≤1mA, thermal shutdown with 20°C hysteresis, and current limiting (160–390mA range). The BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter when bypassed with 0.01µF, directly reducing output noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1.4% over -40°C to +85°C - eliminates need for external feedback resistors and ensures precision rail generation. |
| Max Output Current | 150mA continuous - supports moderate-power analog/RF sections in portable devices without thermal derating under typical PCB layout. |
| Dropout Voltage | 165mV at 150mA - enables operation down to VIN = 2.665V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz) with 0.01µF BP cap - meets stringent noise requirements for ADC references, RF synthesizers, and low-noise op-amp supplies. |
| Quiescent Current | 100µA across load and dropout - maintains high efficiency at light loads and preserves battery runtime in standby modes. |
| Shutdown Current | 10nA - reduces system leakage to negligible levels during deep sleep, critical for multi-year battery-operated IoT sensors. |
| Thermal Shutdown | 155°C trip with 15°C hysteresis - protects against sustained overload while allowing recovery without manual reset. |
Pinout & Package
SOT23-5 thin package (JEDEC MO-178AA), 2.9mm × 1.6mm × 1.1mm body height, GND pin serves as thermal pad - requires solder connection to large copper area for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Logic-low (≤0.4V) disables regulator and reduces IQ to 10nA; no auto-discharge (MAX8868 feature excluded). |
| 2 - GND | Power ground & thermal path | Primary return path for load current and sole thermal conduction route - must be connected to ≥100mm² copper pour. |
| 3 - IN | Input supply connection | Accepts 2.5V–6.5V; requires 1µF ceramic bypass to GND within 5mm for stability and line-transient immunity. |
| 4 - OUT | Regulated output | Delivers up to 150mA; requires 1–10µF low-ESR ceramic output capacitor - minimum 1µF for stability across full temperature/load range. |
| 5 - BP | Noise-reduction bypass node | Connects to internal 200kΩ resistor; 0.01µF ceramic cap reduces output noise by filtering reference noise - larger values increase startup time. |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss - maintains 100µA quiescent current even in dropout, unlike PNP-based LDOs. |
| Reverse battery protection | Blocks >99% of reverse current (<1mA) when VIN or SHDN falls below GND - prevents damage in miswired battery compartments. |
| Internal feedback network | Enables fixed 2.5V output without external resistors - reduces BOM count, layout area, and resistor tolerance-induced drift. |
| Thermal and short-circuit protection | Self-limiting operation under fault: shuts down at 155°C and limits output current to ≥160mA - allows indefinite short-circuit survival. |
| Low-noise BP pin architecture | 80Hz RC filter formed by internal 200kΩ + external 0.01µF - achieves 30µVRMS noise without complex external filtering. |
Applications
| Hand-Held Instruments | PCMCIA Cards |
|---|---|
|
Use Scenario: Portable multimeters and handheld spectrum analyzers powered by two AA cells. IC Role / Device Role / Timing Role: Primary 2.5V analog supply for 16-bit SAR ADC and precision op-amps. Use Value: 30µVRMS noise ensures <1 LSB noise floor for 16-bit conversion; 165mV dropout extends measurement runtime until cell voltage drops to 2.665V. |
Use Scenario: Hot-pluggable PCMCIA modem cards drawing burst current up to 120mA. IC Role / Device Role / Timing Role: Local 2.5V LDO for RS-232 transceiver and UART interface logic. Use Value: 100µA quiescent current minimizes standby drain; thermal shutdown prevents latch-up during insertion transients. |
| Palmtop Computers | Electronic Planners |
|
Use Scenario: Early-generation PDAs with ARM7TDMI core and monochrome LCD requiring clean 2.5V I/O rail. IC Role / Device Role / Timing Role: Dedicated LDO for memory interface and touch controller logic. Use Value: ±1.4% output accuracy guarantees reliable level-shifting between 2.5V peripherals and 3.3V CPU; SOT23-5 thin footprint saves board space. |
Use Scenario: Battery-powered digital organizers with real-time clock, EEPROM, and LED backlight. IC Role / Device Role / Timing Role: Low-noise 2.5V supply for RTC crystal oscillator and SRAM retention. Use Value: 10nA shutdown current enables >10-year backup battery life; reverse battery protection prevents data corruption during battery replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76325DBVR | 220mV dropout at 150mA; 50µVRMS noise; 85µA IQ; SOT23-5 package | Lacks reverse battery protection and BP noise-filtering pin; higher noise impacts precision analog rails | Choose when cost sensitivity outweighs noise/robustness requirements and board space permits larger output caps. |
| MCP1700T-2502E/MB | 600mV dropout at 250mA; 30µVRMS noise; 1.6µA IQ; SOT23-3 package (no BP or SHDN pins) | No shutdown control or reverse protection; 3-pin package limits flexibility in power sequencing designs | Select only for ultra-low-IQ applications where dropout and enable control are non-critical and layout simplicity is prioritized. |
Compared with TPS76325DBVR and MCP1700T-2502E/MB, the MAX8867EZK25+ uniquely combines ultra-low noise (30µVRMS), reverse battery protection, and BP-enabled noise optimization - making it the preferred choice for space-constrained, battery-powered analog systems demanding both precision and fault resilience.
Availability
MAX8867EZK25+ is available at Aetrix Electronics and suitable for hand-held instruments, PCMCIA cards, palmtop computers, and electronic planners requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for MAX8867EZK25+ 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 MAX8867/MAX8868 series was designed specifically for battery-powered portable electronics needing ultra-low-noise, low-quiescent-current regulation with robust fault protection - targeting handheld test equipment, mobile computing peripherals, and compact embedded systems.
FAQ
What is the output voltage tolerance of the MAX8867EZK25+ over temperature and load?
The MAX8867EZK25+ delivers 2.5V output with ±1.4% accuracy over the full -40°C to +85°C operating temperature range and 0mA to 150mA load current. This specification is production-tested at +25°C and guaranteed across temperature via statistical correlation - ensuring consistent performance in battery-powered handheld instruments and PCMCIA cards without calibration.
Does the MAX8867EZK25+ include reverse battery protection, and how does it function?
Yes, the MAX8867EZK25+ includes integrated reverse battery protection that limits reverse current to ≤1mA when either IN or SHDN falls below GND. Its internal circuitry actively disconnects parasitic paths, preventing damage during incorrect battery insertion - a critical safeguard in consumer handheld instruments and electronic planners where field-replaceable batteries are common.
How does the BP pin on the MAX8867EZK25+ reduce output noise?
The BP pin on the MAX8867EZK25+ connects to an internal 200kΩ resistor, forming an 80Hz low-pass filter with an external 0.01µF ceramic capacitor. This configuration filters reference voltage noise before it reaches the error amplifier, achieving 30µVRMS output noise (10Hz–100kHz). Larger BP capacitors marginally reduce noise but increase startup time - 0.01µF is the optimal value per the MAX8867EZK25+ datasheet.
What is the thermal shutdown behavior of the MAX8867EZK25+, and can it self-recover?
The MAX8867EZK25+ triggers thermal shutdown at +155°C junction temperature and includes +15°C hysteresis (re-enabling at ~140°C). During sustained overload, it cycles ON/OFF to limit average power dissipation - enabling safe, autonomous recovery without external intervention. This behavior is confirmed in the device's absolute maximum ratings and typical operating characteristics plots.
Is the MAX8867EZK25+ pin-compatible with other regulators in the MAX886x family?
Yes, the MAX8867EZK25+ is pin-compatible with the MAX8863/MAX8864 in SOT23-5 packages, differing only in the BP pin functionality. It shares identical IN, GND, OUT, and SHDN pin assignments - allowing drop-in replacement in existing layouts when upgrading to lower noise or improved protection features, provided BP is properly bypassed per the MAX8867EZK25+ design guidelines.
MAX8867EZK25+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- 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:
- TSOT-23-5
MAX8867EZK25+ FAQ
1.How can I place an order for MAX8867EZK25+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EZK25+ 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 MAX8867EZK25+ reliable?
The price and inventory of MAX8867EZK25+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EZK25+ is usually 5 days.
3.What payment methods are accepted for MAX8867EZK25+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EZK25+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EZK25+?
MAX8867EZK25+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EZK25+ 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 MAX8867EZK25+?
For technical support, including MAX8867EZK25+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EZK25+ requirements.
6.How does Aetrix verify that MAX8867EZK25+ is sourced from the original manufacturer or authorized distributors?
All MAX8867EZK25+ 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 MAX8867EZK25+ meets industry standards.
7.What is the process for return or replacement of MAX8867EZK25+?
All MAX8867EZK25+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EZK25+, 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 MAX8867EZK25+ part is unused and in its original packaging.
Return procedure for MAX8867EZK25+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8867EZK25+ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
