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Analog Devices Inc./Maxim Integrated MAX8867EZK50+
- Part No.:
- MAX8867EZK50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8867EZK50+.pdf
- Description:
- IC REG LINEAR 5V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,910
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Product details
Overview
MAX8867EZK50+ from Maxim Integrated is a low-noise, low-dropout linear regulator with 5.0V preset output, 150mA output current capability, 30µVRMS output noise, and 165mV dropout at full load. It uses an internal P-channel MOSFET pass transistor, delivers 100µA operating supply current independent of load or dropout, and features reverse battery protection and thermal shutdown - ideal for space-constrained, battery-powered handheld instruments requiring stable low-noise voltage rails.
For engineers reviewing the MAX8867EZK50+ datasheet, MAX8867EZK50+ pinout, MAX8867EZK50+ application, or MAX8867EZK50+ equivalent, key selection criteria include its thin SOT23-5 package, 5.0V ±1.4% output accuracy, 10nA shutdown current, BP-pin noise filtering architecture, and compatibility with 1µF ceramic output capacitors across -40°C to +85°C.
Technical Context
The MAX8867EZK50+ implements a bandgap-referenced error amplifier driving a P-channel MOSFET pass device with fixed internal feedback, enabling precise 5.0V regulation without external resistors. Its BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter with a 0.01µF capacitor, directly reducing reference noise contribution to output voltage noise.
Thermal shutdown activates at +155°C with +15°C hysteresis, and current limiting holds output at ≥160mA minimum under fault conditions. Reverse battery protection limits reverse current to ≤1mA when IN or SHDN falls below GND, isolating internal circuitry via controlled gate control rather than diode clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±1.4% - factory-preset, no external resistors required; enables drop-in replacement in 5V rail designs. |
| Max Output Current | 150mA - sufficient for RF front-ends, microcontroller cores, and analog sensor biasing in portable devices. |
| Dropout Voltage | 165mV at 150mA - allows operation down to VIN = 5.165V, extending usable battery life in single-cell Li-ion or 3×AA systems. |
| Output Noise | 30µVRMS (10Hz–100kHz) - achieved via BP pin filtering; critical for ADC references and RF synthesizer VCO supplies. |
| Quiescent Current | 100µA - constant across load and dropout; ensures minimal standby drain in always-on subsystems. |
| Shutdown Current | 10nA - logic-controlled active shutdown; enables µA-level system sleep modes without external switches. |
| Input Voltage Range | 2.5V to 6.5V - supports Li-ion, Li-polymer, 3×NiMH, and regulated 5V bus inputs without derating. |
Pinout & Package
MAX8867EZK50+ is housed in a thin 5-pin SOT23 package (JEDEC MO-178AA), with exposed pad not electrically connected. The GND pin serves dual function as electrical ground and thermal path - requires soldering to ≥100mm² copper area for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable input | Logic low disables regulator and reduces IQ to 10nA; on MAX8867 (not MAX8868), no auto-discharge - output floats. |
| 2 - GND | Ground reference & thermal sink | Must connect to large PCB copper pour; junction-to-board thermal resistance θJB = 110°C/W for thin SOT23. |
| 3 - IN | Input voltage supply | 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; requires 1–10µF ceramic output capacitor (X7R/X5R, ESR < 0.2Ω) for stability across temperature. |
| 5 - BP | Noise reduction bypass | Connects to internal 200kΩ resistor; 0.01µF ceramic capacitor here reduces output noise by filtering reference noise. |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current; maintains 100µA IQ in dropout, light-load, and heavy-load conditions - extends battery runtime vs. PNP-based LDOs. |
| Reverse battery protection | Actively disconnects internal circuitry when IN or SHDN < GND; limits reverse current to ≤1mA - prevents damage during incorrect battery insertion. |
| Thermal overload protection | Shuts down at TJ = +155°C with +15°C hysteresis; re-enables after cooling - protects against sustained overloads without external circuitry. |
| BP pin noise filtering | Internal 200kΩ resistor + external 0.01µF capacitor forms 80Hz low-pass filter on reference node - achieves 30µVRMS noise without complex external filtering. |
| Short-circuit robustness | Output can be shorted to GND indefinitely; current limit holds ≥160mA min - enables safe operation in unattended or inaccessible deployments. |
Applications
| Hand-Held Instruments | PCMCIA Cards |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by 2×AA or Li-ion batteries with tight noise budgets. IC Role / Device Role / Timing Role: Primary 5.0V analog supply for precision ADCs, op-amps, and reference buffers. Use Value: 30µVRMS noise and 1.4% output accuracy ensure <1 LSB error in 12-bit ADC conversions without post-calibration. |
Use Scenario: Hot-pluggable PCMCIA memory or modem cards requiring immediate, stable 5.0V upon insertion. IC Role / Device Role / Timing Role: Post-regulator for card-edge 5V bus, providing clean local supply independent of host noise. Use Value: 100µA quiescent current and fast 300µs startup (with BP cap) meet PCMCIA Type II power-on timing requirements. |
| Palmtop Computers | Electronic Planners |
Use Scenario: Compact PDAs with multi-rail power architecture where board space limits use of larger packages. IC Role / Device Role / Timing Role: 5.0V supply for USB transceivers and flash memory I/O interfaces. Use Value: Thin SOT23-5 footprint (1.6mm × 2.9mm) saves >40% board area vs. regular SOT23 while maintaining full 150mA capability. |
Use Scenario: Low-power electronic organizers using coin-cell or button batteries for multi-year operation. IC Role / Device Role / Timing Role: Always-on 5.0V rail for RTC, SRAM backup, and wake-up logic. Use Value: 10nA shutdown current enables >10-year shelf life on CR2032; reverse battery protection prevents field failure from misinsertion. |
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 |
|---|---|---|---|
| TPS76350DBVR | Higher 220mV dropout at 150mA; 50µVRMS noise; no BP pin or reverse battery protection. | Lacks integrated noise filtering and reverse polarity hardening - requires external components for same functionality. | Choose only if cost sensitivity outweighs noise/robustness requirements and layout space permits added filtering caps. |
| MCP1700T-5002E/TT | Lower 125mV dropout at 250mA; 40µVRMS noise; 1.6µA quiescent current but no shutdown pin or thermal protection. | Missing active shutdown and thermal safety - unsuitable for unmonitored or high-ambient environments. | Select only for ultra-low-IQ applications where thermal faults are mitigated externally and shutdown is unnecessary. |
Compared with TPS76350DBVR and MCP1700T-5002E/TT, MAX8867EZK50+ uniquely combines 30µVRMS noise, reverse battery protection, thermal shutdown, and 10nA shutdown in a thin SOT23 - delivering higher functional integration and reliability per mm² in battery-critical designs.
Availability
MAX8867EZK50+ is available at Aetrix Electronics and suitable for hand-held instruments, PCMCIA cards, palmtop computers, and electronic planners requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX8867EZK50+ 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 demanding ultra-low noise, low quiescent current, and robust fault protection in minimal footprints.
FAQ
What is the output voltage tolerance of the MAX8867EZK50+ across temperature and load?
The MAX8867EZK50+ guarantees ±1.4% output voltage accuracy over -40°C to +85°C and 0mA to 150mA load range. Typical deviation is ±0.5% at +25°C, with line regulation of ±0.15%/V and load regulation of ±0.04%/mA - ensuring stable 5.0V operation for precision analog circuits without trimming.
Does the MAX8867EZK50+ require an external BP capacitor, and what happens if it's omitted?
Yes, a 0.01µF ceramic capacitor must be placed between BP and GND to achieve the specified 30µVRMS output noise. Omitting it increases output noise to ~50µVRMS due to unfiltered reference noise; the regulator remains functional but fails noise-sensitive applications like ADC reference supplies or RF VCO biasing.
Can the MAX8867EZK50+ be used with ceramic output capacitors smaller than 1µF?
No - the MAX8867EZK50+ requires ≥1µF ceramic output capacitance (X7R/X5R dielectric, ESR < 0.2Ω) for guaranteed stability across -40°C to +85°C and 0–150mA load. Capacitors below 1µF risk oscillation, especially at low temperatures or high ESR, as confirmed by the "Region of Stable COUT ESR" graph in the datasheet.
How does reverse battery protection work on the MAX8867EZK50+, and what is its current limit?
The MAX8867EZK50+ monitors IN and SHDN pins relative to GND; if either goes < 0V, internal circuitry actively disconnects parasitic paths, limiting reverse current to ≤1mA. This prevents latch-up, gate oxide damage, or electrolyte decomposition in incorrectly inserted batteries - a hardware-level safeguard not requiring external diodes or FETs.
Is the MAX8867EZK50+ pin-compatible with other regulators in the MAX886x family?
Yes - the MAX8867EZK50+ is pin-compatible with MAX8867EUK50+, MAX8868EZK50+, and MAX8868EUK50+ in SOT23-5 packages. It is also pin-compatible with MAX8863/MAX8864 except for the BP pin (absent on MAX8863/64), enabling direct upgrade paths for noise-sensitive designs without PCB changes.
MAX8867EZK50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 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
MAX8867EZK50+ FAQ
1.How can I place an order for MAX8867EZK50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EZK50+ 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 MAX8867EZK50+ reliable?
The price and inventory of MAX8867EZK50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EZK50+ is usually 5 days.
3.What payment methods are accepted for MAX8867EZK50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EZK50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EZK50+?
MAX8867EZK50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EZK50+ 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 MAX8867EZK50+?
For technical support, including MAX8867EZK50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EZK50+ requirements.
6.How does Aetrix verify that MAX8867EZK50+ is sourced from the original manufacturer or authorized distributors?
All MAX8867EZK50+ 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 MAX8867EZK50+ meets industry standards.
7.What is the process for return or replacement of MAX8867EZK50+?
All MAX8867EZK50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EZK50+, 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 MAX8867EZK50+ part is unused and in its original packaging.
Return procedure for MAX8867EZK50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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