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Analog Devices Inc./Maxim Integrated MAX8867EUK36
- Part No.:
- MAX8867EUK36
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8867EUK36.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,471
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Product details
Overview
MAX8867EUK36 from Maxim Integrated is a low-noise, low-dropout linear regulator with a factory-preset 3.6V 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 MAX8867EUK36 datasheet, MAX8867EUK36 pinout, MAX8867EUK36 application, or MAX8867EUK36 equivalent, key selection criteria include its SOT23-5 package, 10nA shutdown current, reverse-battery protection, BP-pin noise-filtering architecture, and compatibility with 1µF ceramic output capacitors across -40°C to +85°C.
Technical Context
The MAX8867EUK36 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 feedback loop integrates a 1.25V bandgap reference and error amplifier driving the pass gate, with output voltage set by internal resistor divider.
Noise suppression relies on a dedicated BP pin connected to an external 0.01µF capacitor forming an 80Hz RC filter with an internal 200kΩ resistor; thermal shutdown activates at +155°C with +15°C hysteresis, and reverse-battery protection limits reverse current to ≤1mA when VIN or SHDN falls below GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.6V ±1.4% - factory-trimmed, no external resistors required |
| Max Output Current | 150mA - supports moderate-power analog/digital loads without thermal derating in SOT23-5 |
| Dropout Voltage | 165mV at 150mA - enables operation down to VIN = 3.76V while maintaining regulation |
| Output Noise | 30µVRMS (10Hz–100kHz) - suitable for noise-sensitive RF, ADC, or PLL supply rails |
| Quiescent Current | 100µA - constant across load, dropout, and temperature; extends battery life in always-on systems |
| Shutdown Current | 10nA - enables deep-sleep modes in portable devices with minimal leakage |
| Input Voltage Range | 2.5V to 6.5V - compatible with single Li-ion, dual Alkaline/NiMH, or regulated intermediate rails |
Pinout & Package
SOT23-5 regular package (5-pin, 1.6mm × 2.9mm × 1.1mm body height), thermally enhanced with GND pin serving as primary heatsink - requires solder connection to PCB ground plane for rated power dissipation (571mW at +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable control | Pulls device into 10nA shutdown; logic low must be ≤0.4V (VIH threshold); tied to IN for always-on operation |
| 2 - GND | Power and signal reference | Primary thermal path and return for all currents; must connect to large copper area for thermal management |
| 3 - IN | Unregulated input 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 at 3.6V; requires ≥1µF low-ESR ceramic capacitor to GND for load-transient response |
| 5 - BP | Noise-reduction bypass node | Connects to 0.01µF ceramic capacitor to reduce output noise; forms 80Hz low-pass filter with internal 200kΩ resistor |
Key Features
| Feature | Design Value |
|---|---|
| Reverse battery protection | Limits reverse current to ≤1mA when VIN or SHDN < GND - prevents damage during incorrect battery insertion |
| Thermal shutdown with hysteresis | Activates at +155°C, re-enables after cooling by +15°C - protects against sustained overload without latch-up |
| Load-independent quiescent current | Maintains 100µA IQ from no-load through 150mA and across dropout - eliminates battery drain variability |
| Internal current limiting | Guarantees ≥160mA minimum current limit (typ. 390mA) - allows safe short-circuit testing and fault tolerance |
| Precision output accuracy | ±1.4% over -40°C to +85°C - eliminates need for post-assembly calibration in cost-sensitive consumer designs |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering RF transceiver bias rails and baseband processor I/O supplies in GSM/EDGE handsets operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-noise LDO delivering clean 3.6V to sensitive analog front-end circuitry while maintaining regulation down to end-of-life battery voltage (~3.4V). Use Value: 30µVRMS noise and 165mV dropout extend talk time and prevent RF desense; reverse-battery protection avoids field returns from user-insertion errors. | Use Scenario: Providing isolated, stable 3.6V supply to memory controllers and interface logic in hot-pluggable PCMCIA Type II cards. IC Role / Device Role / Timing Role: Primary voltage regulator for card-side logic, activated only when host slot applies power and asserts enable. Use Value: 10nA shutdown current ensures zero standby drain when card is ejected; SOT23-5 footprint fits tight card-edge layouts. |
| Palmtop Computers | Electronic Planners |
Use Scenario: Supplying core logic voltage to ARM-based application processors and SRAM in handheld PDAs with limited PCB area and thermal mass. IC Role / Device Role / Timing Role: Main system LDO for 3.6V domain, sequenced after main DC-DC converter and before processor reset assertion. Use Value: 100µA quiescent current preserves battery life during suspend-to-RAM; thermal shutdown prevents overheating during CPU burst loads. | Use Scenario: Powering real-time clock (RTC), LCD controller, and touch-screen interface in compact electronic organizers with coin-cell backup capability. IC Role / Device Role / Timing Role: Primary regulated supply for digital logic, enabled only during active user session via microcontroller GPIO. Use Value: BP-pin noise filtering ensures accurate RTC timekeeping; 2.5V–6.5V input range accepts both main battery and backup cell sources. |
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 |
|---|---|---|---|
| TPS76336DBVR | Higher 250mV dropout at 150mA; 50µVRMS noise; 85µA quiescent current; same SOT23-5 package | Lacks reverse-battery protection and BP-pin noise filtering; requires external compensation for some capacitors | Choose when lower BOM cost outweighs noise and protection requirements |
| MCP1700T-3602E/MB | 150mV dropout at 250mA; 30µVRMS noise; 1.6µA quiescent current; SOT23-3 package (no BP or SHDN pins) | Fixed 3.6V output but no shutdown or noise-bypass capability; smaller footprint but less design flexibility | Choose for ultra-low-IQ always-on sensors where shutdown and noise filtering are unnecessary |
Compared with TPS76336DBVR and MCP1700T-3602E/MB, the MAX8867EUK36 uniquely combines ultra-low noise, reverse-battery protection, and BP-pin programmable filtering in a pin-configurable SOT23-5 - making it optimal for portable RF and precision analog systems where reliability and spectral purity are critical.
Availability
MAX8867EUK36 is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, palmtop computers, and electronic planners requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for MAX8867EUK36 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 noise, minimal quiescent current, robust fault protection, and compact packaging without sacrificing output accuracy or thermal resilience.
FAQ
What is the exact output voltage tolerance of the MAX8867EUK36 over temperature?
The MAX8867EUK36 guarantees ±1.4% output voltage accuracy over the full operating temperature range of -40°C to +85°C, as confirmed in the Electrical Characteristics table. This specification includes initial trim error, line regulation, load regulation, and temperature drift - eliminating need for external calibration in most consumer-grade portable designs.
Does the MAX8867EUK36 require an external capacitor on the BP pin, and what happens if it's omitted?
Yes, the MAX8867EUK36 requires a 0.01µF ceramic capacitor between BP and GND to achieve its specified 30µVRMS output noise. If omitted, output noise increases significantly - typically exceeding 100µVRMS - due to unfiltered reference noise coupling into the error amplifier. The device remains functional but fails to meet low-noise design targets for RF or precision analog circuits.
Can the MAX8867EUK36 be used with ceramic output capacitors, and what ESR range is supported?
Yes, the MAX8867EUK36 is fully stable with ceramic output capacitors ranging from 1µF to 10µF and ESR as low as 0.02Ω. The datasheet confirms stability across the full -40°C to +85°C range using X7R/X5R dielectrics; Z5U/Y5V types may require ≥2.2µF at low temperatures to maintain phase margin. No series resistance is needed.
How does the MAX8867EUK36 behave during thermal shutdown, and is it latch-off or auto-recover?
The MAX8867EUK36 features auto-recovering thermal shutdown: it disables the pass transistor when junction temperature exceeds +155°C, then automatically resumes regulation once the die cools by +15°C (hysteresis). This results in pulsed output during sustained overload - protecting the device without requiring manual reset or external intervention.
Is the MAX8867EUK36 pin-compatible with other regulators in the MAX886x family, and which pins differ?
The MAX8867EUK36 is pin-compatible with MAX8863/MAX8864 in SOT23-5, except for the BP pin (pin 5), which is unused on MAX8863/64. All other pins - IN (3), GND (2), OUT (4), and SHDN (1) - share identical functions and placement. This allows drop-in replacement in existing layouts when upgrading to lower-noise operation.
MAX8867EUK36 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3.6V
- 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
MAX8867EUK36 FAQ
1.How can I place an order for MAX8867EUK36 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EUK36 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 MAX8867EUK36 reliable?
The price and inventory of MAX8867EUK36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EUK36 is usually 5 days.
3.What payment methods are accepted for MAX8867EUK36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EUK36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EUK36?
MAX8867EUK36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EUK36 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 MAX8867EUK36?
For technical support, including MAX8867EUK36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EUK36 requirements.
6.How does Aetrix verify that MAX8867EUK36 is sourced from the original manufacturer or authorized distributors?
All MAX8867EUK36 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 MAX8867EUK36 meets industry standards.
7.What is the process for return or replacement of MAX8867EUK36?
All MAX8867EUK36 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EUK36, 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 MAX8867EUK36 part is unused and in its original packaging.
Return procedure for MAX8867EUK36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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