My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6329ZHUT+
- Part No.:
- MAX6329ZHUT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX6329ZHUT+.pdf
- Description:
- FIXED/ADJUSTABLE POSITIVE LDO
- Quantity:
- Payment:
- Shipping:
Inventory:205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6329ZHUT+ from Maxim Integrated is a 150mA, low-dropout linear voltage regulator with integrated microprocessor reset circuit, preset for +1.8V output and -10% reset threshold (Z variant), housed in a 6-pin SOT23 package. It delivers 25µA quiescent current, 180mV dropout at 100mA, and 100ms minimum reset timeout-designed for power-critical portable systems requiring reliable brownout detection and clean startup sequencing.
For engineers reviewing the MAX6329ZHUT+ datasheet, MAX6329ZHUT+ pinout, MAX6329ZHUT+ application, or MAX6329ZHUT+ equivalent, this page provides verified technical context, exact pin functions, real-world use cases in battery-powered microprocessor systems, and validated alternative options for supply chain continuity and design flexibility.
Technical Context
The MAX6329ZHUT+ integrates a P-channel MOSFET LDO regulator core with a precision bandgap reference shared by both regulation and reset supervision. Its SET pin enables dual-mode operation: grounded for fixed +1.8V output (±3.0% accuracy), or connected to an external resistor divider for adjustable outputs from 1.23V to 5.0V.
The internal reset circuit monitors VOUT against a -10% threshold (1.62V nominal for 1.8V output), asserts active-low open-drain RESET for ≥100ms after recovery, and includes built-in glitch rejection, thermal shutdown at +160°C with 20°C hysteresis, and reverse leakage protection eliminating need for external blocking diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.8V ±3.0% (fixed, SET = GND); ensures stable core logic supply for 1.8V microcontrollers and FPGAs |
| Dropout Voltage | 180mV at 100mA load; enables operation down to VIN = 1.98V, extending usable battery life in single-cell Li-ion or alkaline systems |
| Supply Current | 25µA typical (load-independent); minimizes standby drain in always-on portable devices |
| Reset Threshold | -10% of VOUT (1.62V min); triggers reset before critical undervoltage causes processor corruption |
| Reset Timeout | 100ms minimum; guarantees clock oscillator and memory stabilization before CPU release |
| Shutdown Current | <1µA max (SHDN = low); reduces system sleep current to nanoampere range for long-term battery retention |
| Output Capacitor | 1µF ceramic minimum; supports compact layout with low-ESR stability across -40°C to +85°C |
Pinout & Package
Package: 6-pin SOT23-6 (JEDEC MO-178AA), 2.9mm × 1.6mm footprint, exposed pad not present; GND pin serves as primary thermal path-requires soldering to PCB ground plane for full thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 2.5V–5.5V input; reverse leakage protection prevents backfeed when OUT > IN |
| 2 GND | Power and thermal ground | Reference node for all circuits; must connect to large copper area for thermal dissipation and noise control |
| 3 SHDN | Active-low shutdown control | Pulls regulator into sub-1µA sleep mode; compatible with 0.3×VIN/0.8×VIN logic thresholds |
| 4 RESET | Active-low open-drain reset output | Drives µP reset pin directly; requires external pullup; asserts during power-up, brownout, and shutdown exit |
| 5 SET | Feedback reference input | Grounded for +1.8V fixed output; connects to resistor divider for adjustable mode; 1.23V internal reference |
| 6 OUT | Regulated output | Delivers up to 150mA; bypassed with ≥1µF capacitor; short-circuit protected and thermally limited |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reset supervisor | Eliminates discrete RC network or external supervisor IC-reduces BOM count and board area by 3–5 components |
| Zero reverse leakage | Prevents backup battery discharge through IN pin when main supply fails-no external Schottky diode required |
| Thermal + short-circuit protection | Auto-recovering shutdown at +160°C and 350mA current limit enable robust operation under fault conditions |
| 1.8V fixed output with -10% reset | Optimized for modern ultra-low-voltage SoCs and memory interfaces where tight tolerance and fast recovery are mandatory |
| Sub-1µA shutdown mode | Enables multi-year battery life in IoT sensors and wearables by reducing system sleep current to nanoampere levels |
Applications
| Hand-Held Instruments | USB-Powered Peripherals |
|---|---|
|
Use Scenario: Portable multimeters and data loggers powered by single-cell Li-ion or AA batteries. IC Role / Device Role / Timing Role: Primary 1.8V supply regulator and power-on reset generator for ARM Cortex-M0/M3 microcontrollers. Use Value: 25µA quiescent current extends battery life beyond 12 months in sleep mode; 180mV dropout allows operation until battery reaches 1.98V. |
Use Scenario: USB audio adapters and HID devices drawing power exclusively from USB 5V bus. IC Role / Device Role / Timing Role: Step-down LDO and supervisor for 1.8V FPGA configuration logic and USB PHY interface. Use Value: Open-drain RESET synchronizes FPGA initialization with USB enumeration; 100ms timeout meets USB 2.0 suspend/resume timing requirements. |
| Palm-Top Computers | PCMCIA Cards |
|
Use Scenario: Legacy PDAs with 1.8V application processors and SRAM-based memory subsystems. IC Role / Device Role / Timing Role: Core voltage regulator and brownout detector ensuring deterministic boot after battery insertion or voltage sag. Use Value: -10% reset threshold (1.62V) prevents spurious resets during transient load surges while guaranteeing safe restart below functional voltage. |
Use Scenario: Hot-pluggable PCMCIA modems and storage cards requiring immediate power validation on slot insertion. IC Role / Device Role / Timing Role: Regulator and reset source for PCMCIA controller ASIC and serial EEPROM configuration storage. Use Value: SHDN pin enables software-controlled power gating; RESET assertion during card insertion ensures clean state initialization before host enumeration. |
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 |
|---|---|---|---|
| MAX6328ZHUT+ | Same package and pinout; identical +1.8V output but -5% reset threshold (1.71V) | Suitable where tighter reset window is needed to avoid premature reset during light-load transients | Select MAX6328ZHUT+ if system requires earlier reset assertion before 1.71V; otherwise MAX6329ZHUT+ provides greater noise margin |
| TPS76318QDBVRQ1 | Automotive-grade 1.8V LDO (±2% accuracy) with active-high push-pull RESET; no integrated reset threshold adjustment | Requires external resistor network for reset monitoring; lacks SHDN pin and reverse leakage protection | Choose TPS76318QDBVRQ1 only for AEC-Q100 automotive designs needing extended temperature range; MAX6329ZHUT+ offers superior integration for consumer/portable use |
Compared with MAX6328ZHUT+, the MAX6329ZHUT+ delays reset assertion until VOUT falls to 1.62V, improving immunity to brief line sags; versus TPS76318QDBVRQ1, it eliminates external reset components and supports true zero-current shutdown-critical for battery longevity in portable electronics.
Availability
MAX6329ZHUT+ is available at Aetrix Electronics and suitable for hand-held instruments, USB-powered peripherals, palm-top computers, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX6329ZHUT+ 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 precision analog and mixed-signal ICs for power management, sensing, and communication applications.
The MAX6329 series belongs to Maxim's micropower supervisory regulator product line, engineered specifically for battery-operated portable electronics demanding ultra-low quiescent current, integrated reset functionality, and minimal external components.
FAQ
What output voltage does the MAX6329ZHUT+ deliver, and how is it set?
The MAX6329ZHUT+ delivers a fixed +1.8V output with ±3.0% accuracy over temperature and load. This is achieved by connecting the SET pin to GND, which selects the internal feedback resistors calibrated for 1.8V. No external resistors are required-making it ideal for space-constrained designs where simplicity and reliability are paramount. The MAX6329ZHUT+ does not support adjustable output mode unless modified externally, which voids factory calibration.
How does the reset function work on the MAX6329ZHUT+?
The MAX6329ZHUT+ features an integrated -10% reset circuit that monitors its own 1.8V output. When VOUT drops below 1.62V (10% below nominal), the open-drain RESET pin pulls low and remains asserted for a minimum of 100ms after VOUT recovers above threshold. This ensures microprocessors and memory have sufficient time to stabilize before execution resumes. RESET is active-low and requires an external pullup resistor.
Does the MAX6329ZHUT+ include shutdown capability, and what is its current draw?
Yes, the MAX6329ZHUT+ includes an active-low SHDN pin. When pulled low, the regulator enters shutdown mode with total supply current reduced to less than 1µA maximum-verified across temperature and input voltage ranges. This feature enables deep-sleep states in battery-powered devices. During normal operation, SHDN must be tied to IN or driven high via a logic signal compatible with 0.8×VIN threshold.
What is the minimum input voltage required for the MAX6329ZHUT+ to maintain regulation?
The MAX6329ZHUT+ maintains regulation as long as the input voltage exceeds the dropout voltage plus the 1.8V output. At 100mA load, its typical dropout is 180mV, so VIN must remain ≥1.98V. At 150mA, dropout rises to ≤360mV per datasheet, requiring VIN ≥2.16V. Below these thresholds, output voltage collapses linearly-enabling precise end-of-battery-life detection without additional circuitry.
Can the MAX6329ZHUT+ be used with ceramic output capacitors, and what value is recommended?
Yes, the MAX6329ZHUT+ is stable with 1µF minimum X7R or X5R ceramic capacitors-verified across -40°C to +85°C. Larger values (e.g., 4.7µF–10µF) improve PSRR and transient response but are not required for stability. Avoid Z5U/Y5V dielectrics below -10°C unless capacitance is increased to ≥2.2µF. The device does not require ESR tuning, simplifying capacitor selection and reducing bill-of-materials cost.
MAX6329ZHUT+ 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 Output
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6329ZHUT+ FAQ
1.How can I place an order for MAX6329ZHUT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6329ZHUT+ 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 MAX6329ZHUT+ reliable?
The price and inventory of MAX6329ZHUT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6329ZHUT+ is usually 5 days.
3.What payment methods are accepted for MAX6329ZHUT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6329ZHUT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6329ZHUT+?
MAX6329ZHUT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6329ZHUT+ 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 MAX6329ZHUT+?
For technical support, including MAX6329ZHUT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6329ZHUT+ requirements.
6.How does Aetrix verify that MAX6329ZHUT+ is sourced from the original manufacturer or authorized distributors?
All MAX6329ZHUT+ 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 MAX6329ZHUT+ meets industry standards.
7.What is the process for return or replacement of MAX6329ZHUT+?
All MAX6329ZHUT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6329ZHUT+, 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 MAX6329ZHUT+ part is unused and in its original packaging.
Return procedure for MAX6329ZHUT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6329ZHUT+ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
