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Analog Devices Inc./Maxim Integrated MAX8867EZK25+T
- Part No.:
- MAX8867EZK25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8867EZK25+T.pdf
- Description:
- IC REG LIN 2.5V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,124
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Product details
Overview
MAX8867EZK25+T 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 - designed for battery-powered portable electronics requiring stable, clean power under light-to-moderate load.
For engineers reviewing the MAX8867EZK25+T datasheet, MAX8867EZK25+T pinout, MAX8867EZK25+T application, or MAX8867EZK25+T equivalent, key selection criteria include its SOT23-5 thin-package footprint, 10nA shutdown current, reverse-battery protection, BP-pin noise-filtering architecture, and factory-preset 2.5V output with ±1.4% accuracy across -40°C to +85°C.
Technical Context
The MAX8867EZK25+T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) enabling ultra-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.
Noise reduction is implemented via a dedicated BP pin connected to an external 0.01µF capacitor, forming an 80Hz low-pass filter with an internal 200kΩ resistor; this achieves 30µVRMS integrated noise (10Hz–100kHz) with COUT = 10µF. Thermal shutdown activates at +155°C with 15°C hysteresis, and short-circuit protection sustains indefinite ground shorts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1.4% over -40°C to +85°C - eliminates external feedback resistors and ensures precision without calibration. |
| Max Output Current | 150mA continuous - supports moderate-power RF modules, LCD bias, and microcontroller peripherals in space-constrained designs. |
| 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 CBP = 0.01µF - meets stringent analog/RF supply requirements for ADCs, VCOs, and low-noise amplifiers. |
| Quiescent Current | 100µA operating / 10nA shutdown - minimizes standby drain in always-on sensor nodes and battery-backed real-time clocks. |
| Input Voltage Range | 2.5V to 6.5V - accommodates single-cell Li-ion (2.7–4.2V), two-cell alkaline (2.4–3.2V), and regulated 3.3V/5V rails. |
| Protection Features | Reverse-battery protection (≤1mA reverse current), thermal shutdown (+155°C), short-circuit survival - enables robust deployment in consumer handhelds without external protection circuitry. |
Pinout & Package
SOT23-5 thin package (JEDEC MO-178AA), 2.9mm × 1.6mm × 1.1mm body height, GND pin serves as thermal pad - requires soldering to PCB ground plane for optimal thermal performance and power dissipation up to 727mW at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low shutdown control | Pulls supply current to 10nA; on MAX8867 (not MAX8868), no auto-discharge - connect to IN for always-on operation. |
| 2 - GND | Power ground and thermal path | Electrical return and primary heat sink - must be connected to large copper area to maintain junction temperature below +150°C. |
| 3 - IN | Regulator input | Accepts 2.5V–6.5V; requires ≥1µF ceramic bypass to GND near pin for stability and line-transient immunity. |
| 4 - OUT | Regulated output | Delivers up to 150mA at 2.5V; requires 1µF–10µF low-ESR ceramic capacitor to GND for load-transient response and PSRR optimization. |
| 5 - BP | Noise-reduction bypass | Connects to 0.01µF ceramic capacitor to reduce output noise; larger values increase startup time without meaningful noise benefit. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 30µVRMS output noise enabled by dedicated BP pin and internal 200kΩ–0.01µF RC filter - critical for powering sensitive analog signal chains. |
| P-channel MOSFET pass element | 1.1Ω typical RDS(ON) eliminates base-drive current, ensuring 100µA quiescent current regardless of load or dropout - extends battery runtime in portable devices. |
| Reverse-battery protection | Limits reverse current to ≤1mA when VIN or SHDN falls below GND - prevents damage during battery insertion errors in consumer handsets and modems. |
| Thermal and short-circuit resilience | Auto-cycles during thermal overload (+155°C trip, +140°C recovery); survives indefinite output short - removes need for external fusing or current limiting. |
| Factory-preset output | 2.5V trimmed to ±1.4% accuracy across full temperature range - eliminates external resistor network, saving board space and BOM cost. |
Applications
| Cellular Handset Power Rail | PCMCIA Card LDO Supply |
|---|---|
Use Scenario: Providing clean 2.5V bias to RF front-end ICs and baseband processors in GSM/CDMA handsets with single-cell Li-ion input. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering stable voltage to noise-sensitive transceivers and ADCs. Use Value: 30µVRMS noise and 63dB PSRR at 1kHz prevent AM suppression and phase noise degradation in RF signal paths. |
Use Scenario: Powering 3.3V-tolerant I/O buffers and controller logic in hot-pluggable PCMCIA Type II cards. IC Role / Device Role / Timing Role: Local point-of-load regulator converting host 5V bus to isolated 2.5V domain with reverse-polarity fault tolerance. Use Value: Reverse-battery protection and 10nA shutdown enable safe insertion/removal without risk of card or host damage. |
| Palmtop Computer Core Logic | Hand-Held Instrument Sensor Bias |
Use Scenario: Supplying 2.5V to microcontroller cores and SRAM in battery-operated palmtops with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, low-thermal-footprint LDO supporting burst-mode CPU operation and sleep-state retention. Use Value: 100µA quiescent current and SOT23-5 thin package minimize self-heating and extend standby time beyond 72 hours. |
Use Scenario: Generating precision 2.5V reference for 16-bit sigma-delta ADCs and bridge-sensor excitation in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Low-drift, low-noise analog supply rail decoupled from digital switching noise via BP-capacitor filtering. Use Value: ±1.4% output accuracy and <0.04%/mA load regulation ensure measurement repeatability across battery discharge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-dropout LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8863EUK25+T | Same 2.5V output, but lacks BP pin and delivers 45µVRMS noise; 120mV dropout at 150mA; shares SOT23-5 regular package. | Lower noise performance limits use in RF/analog sections; suitable for digital-only rails where size and cost outweigh noise needs. | Select when BP-based noise filtering is unnecessary and board space allows regular (not thin) SOT23-5. |
| MCP1700T-2502E/MB | 2.5V fixed output, 250mA rating, 65µVRMS noise, 178mV dropout at 250mA; SOT23-3 package (no BP or SHDN pins). | Higher max current but no shutdown or noise-bypass capability; requires external enable logic and higher-noise design margin. | Choose for cost-sensitive, non-shutdown applications needing >150mA - but verify noise impact on downstream analog circuits. |
Compared with MAX8867EZK25+T, MAX8863EUK25+T trades noise performance for pin count reduction and lower cost, while MCP1700T-2502E/MB offers higher current at the expense of noise control and programmable shutdown - making MAX8867EZK25+T optimal for compact, battery-powered analog-intensive systems demanding guaranteed 30µVRMS noise and 10nA shutdown.
Availability
MAX8867EZK25+T is available at Aetrix Electronics and suitable for cellular telephones, PCMCIA cards, palmtop computers, and hand-held instruments requiring stable component supply, long-lifecycle support, and guaranteed parametric compliance across industrial temperature range.
Supply support for MAX8867EZK25+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 MAX8867/MAX8868 product line was engineered specifically for battery-powered portable electronics - prioritizing ultra-low quiescent current, low-noise regulation, and robust fault protection in minimal SOT23 footprints.
FAQ
What is the output voltage tolerance of the MAX8867EZK25+T over temperature?
The MAX8867EZK25+T delivers 2.5V output with ±1.4% accuracy across the full -40°C to +85°C operating range. This specification is production-tested and guaranteed using Statistical Quality Control methods - not derived from room-temperature typicals or extrapolation. The MAX8867EZK25+T maintains this tolerance without external trimming or calibration components.
Does the MAX8867EZK25+T include auto-discharge functionality during shutdown?
No, the MAX8867EZK25+T does not provide auto-discharge. That feature is exclusive to the MAX8868 variant (e.g., MAX8868EZK25+T). When the MAX8867EZK25+T is placed in shutdown (SHDN = low), it reduces supply current to 10nA but leaves the output floating - external discharge circuitry is required if rapid VOUT decay is needed.
What capacitor values are recommended for stable operation of the MAX8867EZK25+T?
For stable operation, use ≥1µF X7R/X5R ceramic capacitor on IN, 1µF–10µF low-ESR ceramic on OUT, and exactly 0.01µF ceramic on BP. Larger COUT improves transient response and PSRR; exceeding 0.1µF on BP increases startup time without reducing noise. Avoid Z5U/Y5V dielectrics below -10°C unless capacitance is doubled.
Can the MAX8867EZK25+T operate from a 2.5V input?
Yes - the MAX8867EZK25+T supports VIN as low as 2.5V. At 2.5V input and 2.5V output, it operates in dropout mode with 165mV headroom required at 150mA, meaning minimum functional VIN is 2.665V. Below that, regulation is lost. For true 2.5V-in operation, load must be reduced to maintain sufficient headroom per the dropout vs. load curve.
Is the MAX8867EZK25+T pin-compatible with other regulators in the MAX886x family?
The MAX8867EZK25+T is pin-compatible with MAX8863/MAX8864 in SOT23-5 regular packages, except for the BP pin (pin 5), which is unused on MAX8863/64. It is not pin-compatible with MAX8868 due to different internal discharge circuitry - though both share identical pinout, MAX8868's SHDN behavior differs significantly during shutdown.
MAX8867EZK25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 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+T FAQ
1.How can I place an order for MAX8867EZK25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EZK25+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 MAX8867EZK25+T reliable?
The price and inventory of MAX8867EZK25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EZK25+T is usually 5 days.
3.What payment methods are accepted for MAX8867EZK25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EZK25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EZK25+T?
MAX8867EZK25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EZK25+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 MAX8867EZK25+T?
For technical support, including MAX8867EZK25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EZK25+T requirements.
6.How does Aetrix verify that MAX8867EZK25+T is sourced from the original manufacturer or authorized distributors?
All MAX8867EZK25+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 MAX8867EZK25+T meets industry standards.
7.What is the process for return or replacement of MAX8867EZK25+T?
All MAX8867EZK25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EZK25+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 MAX8867EZK25+T part is unused and in its original packaging.
Return procedure for MAX8867EZK25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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