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Analog Devices Inc./Maxim Integrated MAX6329ZLUT+T
- Part No.:
- MAX6329ZLUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX6329ZLUT+T.pdf
- Description:
- IC REG LDO 2.5V/ADJ SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,053
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Product details
Overview
MAX6329ZLUT+T from Maxim Integrated is a 150mA, low-dropout linear voltage regulator with integrated microprocessor reset circuit, preset for +2.5V output and -10% reset threshold (Z), open-drain active-low reset (L), in SOT23-6 package. It delivers 25µA quiescent current, 180mV dropout at 100mA, and 100ms minimum reset timeout-designed for battery-powered handheld instruments and USB devices requiring stable low-power supply supervision.
For engineers reviewing the MAX6329ZLUT+T datasheet, MAX6329ZLUT+T pinout, MAX6329ZLUT+T application, or MAX6329ZLUT+T equivalent, key selection criteria include fixed +2.5V regulation accuracy (±3.0%), shutdown capability (<1µA), reverse leakage protection, thermal/short-circuit safety, and compatibility with 1µF ceramic output capacitors.
Technical Context
The MAX6329ZLUT+T integrates a P-channel MOSFET LDO regulator core and a precision reset supervisor sharing the same 1.23V internal reference. Its regulator operates from 2.5V to 5.5V input and maintains ±3.0% output accuracy over 0°C to +85°C while delivering up to 150mA load current.
The reset circuit monitors VOUT against a -10% threshold (2.21V to 2.41V at +2.5V nominal), asserts open-drain RESET low during brownout/power-up, and holds reset for ≥100ms after recovery. The SHDN pin enables full regulator shutdown, reducing supply current to <1µA without affecting reset logic state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +2.5V fixed, ±3.0% accuracy ensures reliable µP core supply within tolerance limits |
| Dropout Voltage | 180mV at 100mA load enables operation down to VIN = 2.68V-critical for single-cell Li-ion end-of-life |
| Quiescent Current | 25µA independent of load extends battery life in always-on portable systems |
| Reset Threshold | -10% of VOUT (2.21V–2.41V) provides conservative brownout detection before µP malfunction |
| Reset Timeout | ≥100ms guarantees clock oscillator and supply stabilization before processor release |
| Shutdown Current | <1µA allows deep-sleep mode in battery-backed applications without parasitic drain |
| Output Capacitor | 1µF min ceramic ensures stability across full temperature range and 150mA load |
Pinout & Package
MAX6329ZLUT+T is housed in a 6-pin SOT23-6 package with exposed pad for thermal dissipation. GND (Pin 2) serves dual role as electrical ground and heatsink-requires connection to large PCB copper area for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 2.5V–5.5V supply; reverse leakage protection prevents backfeed from OUT |
| 2 GND | Ground / thermal pad | Reference node and primary heat path-must be soldered to large ground plane |
| 3 SHDN | Active-low shutdown control | Pull low to disable regulator and reduce total current to <1µA; connect to IN for normal operation |
| 4 RESET | Open-drain active-low reset output | Sinks 3.2mA at 0.4V max; requires external pullup for µP reset interface compatibility |
| 5 SET | Feedback reference input | Connected to GND to select +2.5V fixed output; leakage <±10nA avoids divider error |
| 6 OUT | Regulated output | Delivers up to 150mA; bypassed with ≥1µF ceramic capacitor for full stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reset supervisor | Eliminates external RC network or discrete supervisor IC-reduces BOM count and board space |
| Zero reverse leakage current | Enables backup battery operation without blocking diodes-no power loss when main supply fails |
| Thermal & short-circuit protection | Auto-recovery hysteresis (20°C) prevents latch-up during overload-supports robust field deployment |
| 1µF minimum output capacitor | Reduces solution size and cost vs. legacy regulators requiring ≥10µF tantalum |
| 100ms reset timeout | Guarantees system clocks and memory initialization complete before µP execution resumes |
Applications
| Hand-Held Instruments | USB Devices |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by single-cell Li-ion batteries with tight space constraints. IC Role / Device Role / Timing Role: Provides regulated +2.5V supply to ADC and µP while asserting RESET until voltage stabilizes post-power-up. Use Value: 25µA quiescent current extends battery runtime; 180mV dropout enables >95% battery utilization before shutdown. | Use Scenario: Self-powered USB peripherals (e.g., HID keyboards) drawing from 5V bus with brownout risk during cable disconnect. IC Role / Device Role / Timing Role: Regulates local +2.5V rail for USB transceiver logic and generates clean reset pulse on VBUS dip. Use Value: Open-drain RESET interfaces directly with USB controller's active-low reset pin; -10% threshold prevents spurious resets during minor noise. |
| Electronic Planners | Palm Top Computers |
Use Scenario: Low-power PDAs with real-time clock and flash memory requiring deterministic boot sequence. IC Role / Device Role / Timing Role: Supplies +2.5V to RTC and memory controller; SHDN pin synchronizes with host sleep/wake signals. Use Value: Shutdown current <1µA eliminates standby drain-enables multi-week calendar retention on coin cell. | Use Scenario: Compact palmtop PCs using +2.5V core voltage for early-generation ARM processors. IC Role / Device Role / Timing Role: Delivers 150mA regulated output while monitoring for brownout during LCD backlight activation surges. Use Value: Thermal shutdown (160°C) protects against localized heating in sealed enclosures; 1µF capacitor fits tight layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout regulator with integrated reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6328ZLUT+T | Same package and pinout; differs only in reset threshold (-5% instead of -10%) | Better suited for systems requiring tighter supply tolerance monitoring before reset assertion | Select MAX6328ZLUT+T if µP requires reset at -5% VOUT deviation rather than -10% |
| TPS76325DBVR | 250mA output, no integrated reset; requires external supervisor (e.g., TPS3809) | Higher current capacity but increases component count and board area | Choose TPS76325DBVR only if >150mA load or separate reset timing control is needed |
Compared with MAX6329ZLUT+T, MAX6328ZLUT+T offers earlier reset assertion for tighter supply monitoring, while TPS76325DBVR trades integration for higher current and design flexibility-neither is pin-compatible nor drop-in, requiring layout changes and BOM revision.
Availability
MAX6329ZLUT+T is available at Aetrix Electronics and suitable for hand-held instruments, USB devices, and electronic planners requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX6329ZLUT+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) designs high-performance analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX6329 series targets battery-powered portable electronics needing combined regulation and reset functionality in minimal footprint-optimized for reliability, low IQ, and ease of integration.
FAQ
What output voltage does the MAX6329ZLUT+T provide?
The MAX6329ZLUT+T provides a fixed +2.5V regulated output with ±3.0% accuracy over 0°C to +85°C. This is selected by connecting the SET pin to GND. The device uses an internal resistor divider and 1.23V reference to achieve this precise voltage, making it suitable for powering microcontrollers and analog circuitry requiring stable low-noise supply rails.
Does the MAX6329ZLUT+T include a shutdown function?
Yes, the MAX6329ZLUT+T includes an active-low SHDN pin (Pin 3) that reduces total supply current to less than 1µA when asserted. This feature enables ultra-low-power sleep modes in portable equipment. During shutdown, the regulator output is disabled, but the reset circuit remains functional-ensuring valid reset state is maintained even when the output is off.
What is the reset configuration of the MAX6329ZLUT+T?
The MAX6329ZLUT+T features an open-drain, active-low RESET output (Pin 4) with a -10% reset threshold relative to its +2.5V output (i.e., 2.21V–2.41V). Reset remains asserted for a minimum of 100ms after VOUT rises above threshold, ensuring system stability. An external pullup resistor is required to interface with standard µP reset inputs.
What minimum output capacitor is required for stable operation of the MAX6329ZLUT+T?
The MAX6329ZLUT+T requires a minimum 1µF ceramic output capacitor for stable operation across the full temperature range and up to 150mA load. X7R or X5R dielectrics are recommended for consistent ESR and capacitance; Z5U/Y5V types may require ≥2.2µF below -10°C. This low capacitance requirement reduces solution size and cost compared to legacy regulators.
How does reverse leakage protection work in the MAX6329ZLUT+T?
The MAX6329ZLUT+T incorporates internal reverse leakage protection that disables the pass transistor when VOUT exceeds VIN-preventing current flow from output to input. This allows safe operation with auxiliary supplies (e.g., backup batteries) without external blocking diodes. Measured reverse leakage is effectively zero, eliminating standby power loss in dual-supply configurations.
MAX6329ZLUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.23V (2.5V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.4V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Reset
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6329ZLUT+T FAQ
1.How can I place an order for MAX6329ZLUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6329ZLUT+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 MAX6329ZLUT+T reliable?
The price and inventory of MAX6329ZLUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6329ZLUT+T is usually 5 days.
3.What payment methods are accepted for MAX6329ZLUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6329ZLUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6329ZLUT+T?
MAX6329ZLUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6329ZLUT+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 MAX6329ZLUT+T?
For technical support, including MAX6329ZLUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6329ZLUT+T requirements.
6.How does Aetrix verify that MAX6329ZLUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6329ZLUT+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 MAX6329ZLUT+T meets industry standards.
7.What is the process for return or replacement of MAX6329ZLUT+T?
All MAX6329ZLUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6329ZLUT+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 MAX6329ZLUT+T part is unused and in its original packaging.
Return procedure for MAX6329ZLUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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