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Analog Devices Inc./Maxim Integrated MAX8867EUK33+T
- Part No.:
- MAX8867EUK33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8867EUK33+T.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
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Product details
Overview
MAX8867EUK33+T from Maxim Integrated is a low-noise, low-dropout linear regulator with 3.3V preset output, 150mA output current capability, 30µVRMS output noise, and 165mV dropout at full load. It uses an internal P-channel MOSFET pass transistor and operates from 2.5V to 6.5V input, targeting battery-powered portable electronics requiring stable, quiet voltage regulation.
For engineers reviewing the MAX8867EUK33+T datasheet, MAX8867EUK33+T pinout, MAX8867EUK33+T application, or MAX8867EUK33+T equivalent, key selection criteria include output noise performance, shutdown current (10nA), thermal/short-circuit protection, reverse battery tolerance, and SOT23-5 package compatibility with legacy MAX8863/64 designs.
Technical Context
The MAX8867EUK33+T implements a fixed-output LDO architecture with a 1.25V bandgap reference, error amplifier, and internal feedback divider. Its P-channel MOSFET pass element enables ultra-low quiescent current (100µA) independent of load or dropout condition.
It integrates BP-pin-based noise filtering (via 0.01µF capacitor), logic-controlled active shutdown (10nA), reverse battery protection (<1mA reverse current), and thermal shutdown at +155°C with 15°C hysteresis. Unlike the MAX8868 variant, it lacks auto-discharge functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±1.4% - factory-preset, no external resistors required |
| Max Output Current | 150mA - supports moderate-power RF/baseband ICs in portable devices |
| Dropout Voltage | 165mV at 150mA - enables operation down to ~3.465V input for 3.3V rail |
| Output Noise | 30µVRMS (10Hz–100kHz) - suitable for noise-sensitive analog/RF circuitry |
| Quiescent Current | 100µA - constant across load and dropout, extends battery life |
| Shutdown Current | 10nA - enables deep-sleep power management in handheld systems |
| Input Voltage Range | 2.5V to 6.5V - compatible with single Li-ion, multi-cell alkaline, or USB-powered systems |
Pinout & Package
SOT23-5 regular package (5-pin, 1.6mm × 2.9mm × 1.1mm body height), thermally enhanced with GND pin serving as heatsink. Requires PCB ground plane connection for thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Logic low disables regulator and reduces supply current to 10nA; connect to IN for always-on operation |
| 2 - GND | Power ground & thermal path | Electrical return and primary heat dissipation path; must be soldered to large copper area |
| 3 - IN | Input voltage supply | Accepts 2.5V–6.5V; requires ≥1µF bypass capacitor to GND for stability |
| 4 - OUT | Regulated output | Delivers up to 150mA at 3.3V; requires ≥1µF low-ESR output capacitor |
| 5 - BP | Noise reduction bypass | Connects to 0.01µF ceramic capacitor to reduce output noise via internal 200kΩ filter |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 30µVRMS output noise with 0.01µF BP cap - meets stringent analog/RF supply requirements |
| P-channel pass transistor | 1.1Ω typical RDS(ON) - eliminates base-drive loss, enabling 100µA IQ across all operating conditions |
| Reverse battery protection | Limits reverse current to <1mA when VIN or SHDN falls below GND - prevents damage in misinserted battery scenarios |
| Thermal & short-circuit protection | Shuts down at +155°C with 15°C hysteresis; survives indefinite output short - ensures robust field operation |
| Preset voltage accuracy | ±1.4% over -40°C to +85°C - eliminates calibration overhead in production |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering baseband processor core and RF transceiver sections in GSM/EDGE handsets with single Li-ion battery. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying noise-sensitive analog front-end and digital I/O domains. Use Value: 30µVRMS noise and 165mV dropout extend usable battery range while maintaining RF signal integrity. | Use Scenario: Providing regulated 3.3V to PCMCIA Type II card controllers and interface logic in laptop expansion slots. IC Role / Device Role / Timing Role: Standby and active-mode voltage regulator with fast load-transient response for hot-plug detection circuits. Use Value: 10nA shutdown current enables zero-power card presence detection; 150mA capacity supports burst data transfers. |
| Palmtop Computers | Modems |
Use Scenario: Supplying 3.3V to microcontroller, display driver, and touch controller in battery-operated palmtop PDAs. IC Role / Device Role / Timing Role: Main system LDO with integrated reverse battery protection for user-replaceable battery compartments. Use Value: Reverse battery tolerance prevents damage during incorrect AA/AAA cell insertion; 100µA IQ maximizes idle time between sync sessions. | Use Scenario: Regulating 3.3V for V.34/V.90 analog modem line drivers and codec sections powered from AC adapters or USB. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning switching supply ripple before analog signal paths. Use Value: 63dB PSRR at low frequencies suppresses adapter noise; BP-capacitor filtering further attenuates high-frequency interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8863EUK33+T | Same pinout and 3.3V output, but lacks BP pin and achieves 45µVRMS noise; higher 150µA quiescent current | Noise-sensitive RF sections require MAX8867EUK33+T; cost-sensitive digital-only rails may use MAX8863EUK33+T | Select MAX8867EUK33+T when BP-filtered noise performance or lower IQ is mandatory |
| MCP1700T-3302E/MB | SOT23-3 package (no SHDN/BP pins), 250mA rating, 30µVRMS noise, but only 1.6µA IQ in shutdown (not 10nA) | Requires external enable logic and lacks reverse battery protection; suited for simpler, non-battery-reversal-prone designs | Choose MCP1700T-3302E/MB only if board space is constrained and reverse protection is handled externally |
Compared with MAX8863EUK33+T, the MAX8867EUK33+T delivers superior noise filtering and lower operating current; versus MCP1700T-3302E/MB, it provides integrated shutdown control, reverse battery safety, and BP-based noise optimization-critical for compact, user-serviceable portable systems.
Availability
MAX8867EUK33+T is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, palmtop computers, and modem designs requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance over industrial temperature range.
Supply support for MAX8867EUK33+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 demanding ultra-low noise, minimal quiescent current, and robust fault protection in space-constrained SOT23 packages.
FAQ
What is the output voltage tolerance of the MAX8867EUK33+T over temperature?
The MAX8867EUK33+T guarantees ±1.4% output voltage accuracy over the full -40°C to +85°C operating temperature range. This specification is production-tested at +25°C and correlated across temperature using Statistical Quality Control methods, ensuring consistent 3.3V regulation in handheld and automotive-infotainment environments where thermal cycling occurs.
Does the MAX8867EUK33+T include reverse battery protection?
Yes, the MAX8867EUK33+T includes integrated reverse battery protection that limits reverse current to less than 1mA when either the IN or SHDN pin falls below ground potential. This feature protects the device and downstream circuitry during incorrect battery installation in consumer handheld products, eliminating the need for external series diodes or MOSFETs.
What capacitor values are recommended for stable operation of the MAX8867EUK33+T?
For stable operation, the MAX8867EUK33+T requires a minimum 1µF input capacitor (CIN) and 1µF output capacitor (COUT) with low ESR. A 0.01µF ceramic capacitor on the BP pin is mandatory for achieving the specified 30µVRMS noise. X7R/X5R dielectrics are preferred; Z5U/Y5V types may require ≥2.2µF for low-temperature stability.
How does the MAX8867EUK33+T behave during thermal overload?
When junction temperature exceeds +155°C, the MAX8867EUK33+T activates thermal shutdown, turning off the pass transistor. After cooling by 15°C, it automatically resumes regulation. This hiccup-mode behavior prevents permanent damage during sustained overload or poor PCB thermal design, and is fully characterized per the Absolute Maximum Ratings table in the datasheet.
Is the MAX8867EUK33+T pin-compatible with other regulators in the same family?
Yes, the MAX8867EUK33+T is pin-compatible with the MAX8863 and MAX8864 families in SOT23-5 packages, except for the BP pin which is unique to MAX8867/MAX8868. This allows drop-in replacement in existing layouts when upgrading from MAX8863 designs to achieve lower noise and reduced quiescent current without PCB revision.
MAX8867EUK33+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- 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
MAX8867EUK33+T FAQ
1.How can I place an order for MAX8867EUK33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EUK33+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 MAX8867EUK33+T reliable?
The price and inventory of MAX8867EUK33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EUK33+T is usually 5 days.
3.What payment methods are accepted for MAX8867EUK33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EUK33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EUK33+T?
MAX8867EUK33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EUK33+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 MAX8867EUK33+T?
For technical support, including MAX8867EUK33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EUK33+T requirements.
6.How does Aetrix verify that MAX8867EUK33+T is sourced from the original manufacturer or authorized distributors?
All MAX8867EUK33+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 MAX8867EUK33+T meets industry standards.
7.What is the process for return or replacement of MAX8867EUK33+T?
All MAX8867EUK33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EUK33+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 MAX8867EUK33+T part is unused and in its original packaging.
Return procedure for MAX8867EUK33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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