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Analog Devices Inc./Maxim Integrated MAX8867EUK30-T
- Part No.:
- MAX8867EUK30-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8867EUK30-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
MAX8867EUK30-T from Maxim Integrated is a low-noise, low-dropout linear regulator with 3.0V preset output, 150mA output current capability, 165mV dropout at full load, 30µVRMS output noise, and 100µA operating supply current - designed for battery-powered portable electronics requiring stable, clean power under light-to-moderate load.
For engineers reviewing the MAX8867EUK30-T datasheet, MAX8867EUK30-T pinout, MAX8867EUK30-T application, or MAX8867EUK30-T equivalent, key selection criteria include dropout performance at 150mA, shutdown current (10nA), reverse battery protection, BP-capacitor–dependent noise reduction, and SOT23-5 thermal design constraints.
Technical Context
The MAX8867EUK30-T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) to achieve low dropout and eliminate base-drive current loss. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin, enabling fixed 3.0V regulation without external resistors.
It integrates thermal shutdown (155°C trip, 20°C hysteresis), short-circuit protection, and reverse battery protection that limits reverse current to 1mA when VIN or SHDN falls below ground. Unlike the MAX8868 variant, it lacks auto-discharge functionality on shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1.4% over -40°C to +85°C - eliminates need for external feedback resistors and ensures precision in space-constrained portable designs. |
| Max Output Current | 150mA continuous - sufficient for RF front-ends, microcontroller cores, or sensor signal chains in handheld instruments. |
| Dropout Voltage | 165mV at 150mA - enables operation down to 3.165V input, extending usable battery life in single-cell Li-ion or dual-cell alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz, CBP = 0.01µF, COUT = 10µF) - supports noise-sensitive analog circuits like ADC references or VCO supplies. |
| Quiescent Current | 100µA across load and dropout conditions - maintains efficiency during standby or light-load states in always-on subsystems. |
| Shutdown Current | 10nA logic-controlled - reduces system-level leakage to negligible levels during deep sleep modes. |
| Input Voltage Range | 2.5V to 6.5V - compatible with single-cell Li-ion (2.7–4.2V), LiFePO₄ (2.0–3.6V), or 3.3V/5V rail inputs. |
Pinout & Package
SOT23-5 regular package (JEDEC MO-178AA), 5-pin surface-mount with exposed pad not electrically connected; GND pin serves as primary thermal path - requires soldering to ≥25 mm² copper pour for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Logic-low disables regulator and reduces IQ to 10nA; must be pulled high (to IN or VCC) for normal operation; no auto-discharge function. |
| 2 - GND | Power ground and thermal sink | Reference node for all internal circuitry; also conducts heat - PCB layout must maximize copper area and thermal vias beneath this pin. |
| 3 - IN | Unregulated input supply | Accepts 2.5V–6.5V; requires ≥1µF ceramic bypass capacitor close to pin to suppress supply noise and ensure stability. |
| 4 - OUT | Regulated 3.0V output | Sources up to 150mA; requires 1–10µF output capacitor (X7R/X5R dielectric recommended) with ESR <0.2Ω for stability across temperature. |
| 5 - BP | Noise-reduction bypass terminal | Connects to 0.01µF ceramic capacitor to reduce output voltage noise; forms 80Hz RC filter with internal 200kΩ resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 30µVRMS output noise with 0.01µF BP cap - meets stringent requirements for RF bias, precision ADC, or PLL power rails. |
| P-channel pass architecture | 100µA quiescent current independent of load or dropout - avoids efficiency collapse common in PNP-based LDOs under heavy or dropout conditions. |
| Reverse battery protection | Limits reverse current to ≤1mA when VIN or SHDN < 0V - prevents damage and data corruption in consumer devices with user-replaceable batteries. |
| Thermal and short-circuit protection | 155°C shutdown with 20°C hysteresis and indefinite short-circuit tolerance - enables robust operation in unventilated enclosures or fault-prone interfaces. |
| Preset 3.0V output accuracy | ±1.4% over full temperature range (-40°C to +85°C) - eliminates calibration overhead and supports direct replacement of legacy 3.0V regulators. |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
|
Use Scenario: Powering GSM/GPRS RF transceiver ICs and baseband processors during burst transmission. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying noise-sensitive RF sections and digital core logic. Use Value: 165mV dropout extends talk time by enabling operation until battery voltage drops to 3.165V; 30µVRMS noise prevents RX desensitization. |
Use Scenario: Providing regulated 3.0V to memory controllers and interface logic in hot-pluggable PCMCIA Type II cards. IC Role / Device Role / Timing Role: Standby-power LDO with 10nA shutdown mode activated during card ejection or host sleep. Use Value: Ultra-low shutdown current prevents parasitic drain on host battery; reverse battery protection safeguards card during misinsertion. |
| Palmtop Computers | Electronic Planners |
|
Use Scenario: Supplying 3.0V to microcontroller peripherals (LCD drivers, touch controllers, IR transceivers) in compact palmtop form factors. IC Role / Device Role / Timing Role: Compact-area, thermally efficient LDO delivering stable voltage despite variable processor load and ambient temperature swings. Use Value: SOT23-5 footprint and GND-as-thermal-sink design allow placement near heat-generating SoCs without derating; ±1.4% accuracy ensures reliable LCD contrast and button response. |
Use Scenario: Regulating power to real-time clock (RTC), SRAM backup, and low-power MCU in battery-backed electronic organizers. IC Role / Device Role / Timing Role: Always-on LDO maintaining 3.0V rail during main battery removal or deep sleep, with minimal self-discharge. Use Value: 100µA operating current and 10nA shutdown current maximize shelf life of coin-cell backup; reverse battery protection prevents RTC register corruption during battery swap. |
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 |
|---|---|---|---|
| TPS76330DBVR | 300mV dropout at 150mA; 50µVRMS noise; 85µA IQ; no BP pin or reverse battery protection | Lacks reverse battery protection and BP-based noise filtering - requires additional external protection and filtering for same noise performance | Choose if board space allows larger output capacitance and external reverse-polarity diode, and lower cost is prioritized over integrated protection. |
| MCP1700T-3002E/MB | 600mV dropout at 250mA; 30µVRMS noise; 1.6µA IQ; SOT23-3, no SHDN or BP pins | Three-pin package omits enable and noise-bypass control - limits flexibility in power sequencing and ultra-low-noise designs | Choose only for simple always-on 3.0V rails where dropout margin >600mV is acceptable and no shutdown or BP tuning is needed. |
Compared with TPS76330DBVR and MCP1700T-3002E/MB, the MAX8867EUK30-T delivers superior dropout performance (165mV vs. ≥300mV), integrated reverse battery protection, and BP-tunable noise reduction - making it uniquely suited for compact, battery-critical, noise-sensitive portable systems where reliability and headroom are constrained.
Availability
MAX8867EUK30-T is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, palmtop computers, and electronic planners requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance across industrial temperature ranges.
Supply support for MAX8867EUK30-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 demanding ultra-low noise, low quiescent current, and robust fault protection in minimal SOT23-5 footprint.
FAQ
What is the output voltage tolerance of the MAX8867EUK30-T over temperature?
The MAX8867EUK30-T provides a factory-preset 3.0V output with ±1.4% accuracy over the full operating temperature range of -40°C to +85°C. This specification is production-tested and guaranteed using Statistical Quality Control methods - ensuring consistent performance in portable devices exposed to wide ambient variations without requiring external trimming or calibration.
Does the MAX8867EUK30-T include auto-discharge functionality on shutdown?
No, the MAX8867EUK30-T does not include auto-discharge functionality. That feature is exclusive to the MAX8868 variant (e.g., MAX8868EUK30-T). When the MAX8867EUK30-T is placed in shutdown via the SHDN pin, 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 MAX8867EUK30-T?
For stable operation, use a 1µF X7R or X5R ceramic capacitor on IN, 1–10µF on OUT (with ESR <0.2Ω), and exactly 0.01µF on BP. Larger output capacitance improves PSRR and transient response but increases startup time; avoid Y5V/Z5U dielectrics below -10°C unless capacitance is increased to ≥2.2µF.
Can the MAX8867EUK30-T operate from a 2.7V lithium-ion cell throughout its discharge curve?
Yes - with a 3.0V output and 165mV dropout at 150mA, the MAX8867EUK30-T remains functional down to 3.165V input. Since a single Li-ion cell discharges from ~4.2V to ~2.7V, the device supports full operation only above 3.165V. For full-range compatibility, pair with a higher-input LDO or use in systems where 3.0V rail is active only during top 70% of battery capacity.
How does the BP pin affect noise performance and startup behavior in the MAX8867EUK30-T?
The BP pin connects to an internal 200kΩ resistor forming an 80Hz low-pass filter with the external 0.01µF capacitor - reducing output voltage noise to 30µVRMS. Increasing BP capacitance lowers noise slightly but lengthens startup time; values >0.1µF provide no measurable benefit and degrade shutdown exit delay, so 0.01µF is the optimal, validated value for the MAX8867EUK30-T.
MAX8867EUK30-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3V
- 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
MAX8867EUK30-T FAQ
1.How can I place an order for MAX8867EUK30-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EUK30-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 MAX8867EUK30-T reliable?
The price and inventory of MAX8867EUK30-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EUK30-T is usually 5 days.
3.What payment methods are accepted for MAX8867EUK30-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EUK30-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EUK30-T?
MAX8867EUK30-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EUK30-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 MAX8867EUK30-T?
For technical support, including MAX8867EUK30-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EUK30-T requirements.
6.How does Aetrix verify that MAX8867EUK30-T is sourced from the original manufacturer or authorized distributors?
All MAX8867EUK30-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 MAX8867EUK30-T meets industry standards.
7.What is the process for return or replacement of MAX8867EUK30-T?
All MAX8867EUK30-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EUK30-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 MAX8867EUK30-T part is unused and in its original packaging.
Return procedure for MAX8867EUK30-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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