My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8867EZK40+T
- Part No.:
- MAX8867EZK40+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8867EZK40+T.pdf
- Description:
- IC REG LINEAR 4V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,038
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8867EZK40+T from Maxim Integrated is a low-noise, low-dropout linear regulator with a preset 4.0V output, 150mA output current capability, 30µVRMS output noise, and 165mV dropout at full load. It features an internal P-channel MOSFET pass transistor, 100µA operating supply current (independent of load or dropout), and reverse battery protection. It is used in space-constrained portable electronics requiring stable, clean power from single-cell Li-ion or alkaline batteries.
For engineers reviewing the MAX8867EZK40+T datasheet, MAX8867EZK40+T pinout, MAX8867EZK40+T application, or MAX8867EZK40+T equivalent, key selection criteria include output voltage accuracy (±1.4%), shutdown current (10nA), thermal shutdown threshold (+155°C), BP-capacitor–enabled noise filtering, and SOT23-5 thin-package thermal performance (θJB = 110°C/W).
Technical Context
The MAX8867EZK40+T implements a fixed-output LDO architecture using a 1.25V bandgap reference, error amplifier, and internal resistor divider to set 4.0V output. Its P-channel MOSFET pass device eliminates base-drive current, enabling consistent 100µA quiescent current across all operating conditions-including dropout, light load, and heavy load.
It integrates reverse-battery protection that limits reverse current to ≤1mA when VIN or SHDN falls below GND, plus thermal shutdown (trip at +155°C, hysteresis +15°C) and short-circuit protection. The BP pin accepts a 0.01µF ceramic capacitor to form an 80Hz RC filter that reduces output noise to 30µVRMS (10Hz–100kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.0V ±1.4% over -40°C to +85°C - ensures stable logic supply for 3.3V/4.0V I/O interfaces without external feedback. |
| Max Output Current | 150mA continuous - supports moderate-power RF modules, ADCs, or microcontroller peripherals in handheld devices. |
| Dropout Voltage | 165mV at 150mA - enables operation down to 4.165V input, extending usable life of 4.2V Li-ion batteries to ~3.8V. |
| Output Noise | 30µVRMS (10Hz–100kHz) with 0.01µF BP cap - meets low-noise requirements for precision analog sensors or RF front-ends. |
| Quiescent Current | 100µA typical (load- and dropout-independent) - minimizes standby power loss in always-on battery systems. |
| Shutdown Current | 10nA max - reduces system leakage during deep sleep, critical for multi-year coin-cell or energy-harvesting applications. |
| Thermal Shutdown | +155°C trip, +140°C restart - protects against sustained overload in sealed enclosures without derating design margins. |
Pinout & Package
SOT23-5 thin package (2.9mm × 1.6mm × 0.95mm height), thermally enhanced with GND pin acting as heatsink. Recommended PCB layout uses large copper pour under GND pin for θJA reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Pulls regulator into 10nA shutdown; on MAX8867 (not MAX8868), no auto-discharge - must be tied to IN for always-on operation. |
| 2 - GND | Power ground and thermal path | Electrical return and primary heat conduction path; requires direct connection to ≥100mm² copper area for rated 727mW dissipation. |
| 3 - IN | Input voltage supply | Accepts 2.5V–6.5V; requires ≥1µF low-ESR ceramic bypass to GND within 5mm for stability and line-transient immunity. |
| 4 - OUT | Regulated output | Delivers up to 150mA; requires ≥1µF output capacitor (X7R/X5R dielectric recommended) for load-transient response and ESR-stability margin. |
| 5 - BP | Noise-reduction bypass node | Connects to 0.01µF ceramic cap to reduce output noise; larger values increase startup time without meaningful noise benefit. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 30µVRMS output noise with 0.01µF BP capacitor - enables direct powering of noise-sensitive RF ICs or high-resolution ADCs without additional filtering. |
| Load- and dropout-invariant IQ | 100µA operating current regardless of output load or input-to-output differential - simplifies battery-life modeling across full operating range. |
| Reverse battery protection | ≤1mA reverse current when VIN or SHDN < GND - prevents damage and data corruption in consumer devices with user-replaceable batteries. |
| Thermal and short-circuit robustness | Integrated thermal shutdown (+155°C) and indefinite short-circuit tolerance - eliminates need for external current-limiting or thermal monitoring circuitry. |
| Preset 4.0V output | Factory-trimmed ±1.4% accuracy over temperature - removes external resistor network, saving board space and calibration effort in cost-sensitive designs. |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering baseband processor I/O rails and RF transceiver bias supplies in compact GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary 4.0V LDO delivering clean, low-noise power to sensitive analog sections while maintaining tight voltage regulation during burst-mode transmission. Use Value: Enables reliable RF performance by suppressing switching noise coupling; 165mV dropout extends talk-time by >12% vs. legacy 200mV-dropout regulators. | Use Scenario: Providing regulated 4.0V supply to PCMCIA card controllers and interface logic in laptops and industrial docking stations. IC Role / Device Role / Timing Role: Local point-of-load regulator isolating card logic from noisy host bus voltage, with fast transient response to handle hot-plug events. Use Value: Prevents bus reset or communication errors during insertion/removal; 10nA shutdown current eliminates standby drain when card is ejected. |
| Hand-Held Instruments | Palmtop Computers |
Use Scenario: Supplying precision analog front-end (AFE) and microcontroller core in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Low-noise 4.0V source for ADC reference buffers and op-amp signal chains, rejecting supply ripple from shared battery rail. Use Value: Reduces measurement noise floor by ≥12dB vs. standard LDOs; ±1.4% output accuracy maintains absolute reading traceability without recalibration. | Use Scenario: Powering display driver ICs and memory interfaces in monochrome or grayscale palmtop PDAs. IC Role / Device Role / Timing Role: Compact, thermally efficient 4.0V regulator supporting intermittent high-current bursts during screen refresh or flash write operations. Use Value: SOT23-5 thin package fits narrow board edges; 727mW max power dissipation allows sustained 120mA loads without thermal throttling in confined chassis. |
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 |
|---|---|---|---|
| TPS76340DBVR | 4.0V fixed output, 150mA, 35µVRMS noise, 220mV dropout at 150mA, 85µA IQ, SOT23-5 package | Higher dropout limits usable battery range; lower PSRR above 10kHz | Choose if TI ecosystem alignment or longer production lifecycle is prioritized over lowest noise or dropout. |
| MCP1703T-4002E/MB | 4.0V fixed output, 250mA, 45µVRMS noise, 600mV dropout at 250mA, 4µA IQ, SOT23-5 package | Higher dropout and noise; ultra-low IQ suits long-duration sleep modes but sacrifices dynamic performance | Prefer for energy-harvesting or coin-cell applications where average current dominates over transient fidelity. |
Compared with TPS76340DBVR and MCP1703T-4002E/MB, the MAX8867EZK40+T delivers superior noise performance (30µVRMS), lowest dropout (165mV), and consistent 100µA IQ across all operating states - making it optimal for battery-powered instruments and RF subsystems demanding both precision and efficiency.
Availability
MAX8867EZK40+T is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, hand-held instruments, and palmtop computers requiring stable component supply, long-term manufacturability, and guaranteed parametric compliance over industrial temperature range (-40°C to +85°C).
Supply support for MAX8867EZK40+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 designed specifically for battery-powered portable electronics needing ultra-low noise, minimal quiescent current, and robust protection - targeting space-constrained designs where reliability and efficiency are non-negotiable.
FAQ
What is the output voltage tolerance of the MAX8867EZK40+T over temperature and load?
The MAX8867EZK40+T has a factory-trimmed output voltage of 4.0V with ±1.4% accuracy over the full operating temperature range (-40°C to +85°C) and load current (0–150mA). This specification is production-tested and guaranteed via Statistical Quality Control methods, ensuring consistent performance without external trimming or calibration in end equipment.
Does the MAX8867EZK40+T include auto-discharge functionality during shutdown?
No, the MAX8867EZK40+T does not include auto-discharge. Auto-discharge is exclusive to the MAX8868 family (e.g., MAX8868EZK40+T). When the MAX8867EZK40+T is placed in shutdown (SHDN = low), the output remains floating at its last regulated voltage; external discharge circuitry is required if rapid output decay is needed.
What capacitor values are recommended for stable operation of the MAX8867EZK40+T?
For stable operation, use a 1µF X7R or X5R ceramic capacitor on IN, a 1–10µF X7R/X5R ceramic capacitor on OUT (≥1µF minimum for 150mA loads), and a 0.01µF ceramic capacitor on BP. Avoid Z5U/Y5V dielectrics below -10°C; tantalum capacitors require ≥2.2µF to maintain ESR in the stable region per the Region of Stable COUT ESR graph.
How does the MAX8867EZK40+T achieve low quiescent current across varying load and dropout conditions?
The MAX8867EZK40+T achieves 100µA typical quiescent current independent of load or dropout by using an internal P-channel MOSFET pass transistor - eliminating base-drive current required by PNP-based regulators. This architecture avoids saturation losses and maintains constant IQ whether operating in regulation, dropout, light load, or heavy load, simplifying battery-life estimation.
Is the MAX8867EZK40+T pin-compatible with other regulators in the MAX886x family?
Yes, the MAX8867EZK40+T is pin-compatible with MAX8863/MAX8864 in SOT23-5 packages, except for the BP pin function. It shares identical IN, GND, OUT, and SHDN pin assignments. However, the BP pin on MAX8867EZK40+T is dedicated to noise filtering and must be bypassed with 0.01µF - unlike MAX8863/64 which lack this pin and feature different internal compensation.
MAX8867EZK40+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):
- 4V
- 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
MAX8867EZK40+T FAQ
1.How can I place an order for MAX8867EZK40+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EZK40+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 MAX8867EZK40+T reliable?
The price and inventory of MAX8867EZK40+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EZK40+T is usually 5 days.
3.What payment methods are accepted for MAX8867EZK40+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EZK40+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EZK40+T?
MAX8867EZK40+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EZK40+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 MAX8867EZK40+T?
For technical support, including MAX8867EZK40+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EZK40+T requirements.
6.How does Aetrix verify that MAX8867EZK40+T is sourced from the original manufacturer or authorized distributors?
All MAX8867EZK40+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 MAX8867EZK40+T meets industry standards.
7.What is the process for return or replacement of MAX8867EZK40+T?
All MAX8867EZK40+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EZK40+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 MAX8867EZK40+T part is unused and in its original packaging.
Return procedure for MAX8867EZK40+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8867EZK40+T 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
