My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6329SPUT+T
- Part No.:
- MAX6329SPUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX6329SPUT+T.pdf
- Description:
- IC REG LDO 3.3V/ADJ SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,384
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6329SPUT+T from Maxim Integrated is a 150mA, +2.5V fixed-output low-dropout linear regulator with integrated microprocessor reset circuit, 25µA quiescent current, 180mV dropout at 100mA, and open-drain active-low RESET output - designed for battery-powered handheld instruments and USB devices requiring stable supply and reliable power-on reset.
For engineers reviewing the MAX6329SPUT+T datasheet, MAX6329SPUT+T pinout, MAX6329SPUT+T application, or MAX6329SPUT+T equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios, and validated alternative options for portable power management design.
Technical Context
The MAX6329SPUT+T integrates a P-channel MOSFET LDO regulator core with an independent reset supervisor sharing the same 1.23V internal reference. It operates from 2.5V to 5.5V input, delivers ±3.0% output accuracy over 0°C to +85°C, and asserts reset when VOUT falls below −5% of nominal (2.375V) with 100ms minimum timeout.
Its SHDN pin enables active-low digital shutdown (<1µA supply current), while SET = GND configures fixed +2.5V output. The device uses no external components for reset timing and replaces discrete RC-based supervisors in space-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +2.5V fixed (±3.0% accuracy over full temp/load range) |
| Max Output Current | 150mA - sufficient to power microcontrollers, sensors, and USB peripherals |
| Dropout Voltage | 180mV at 100mA load - enables operation down to VIN = 2.68V for full regulation |
| Quiescent Current | 25µA - minimizes battery drain in always-on portable systems |
| Reset Threshold | 2.375V (−5% of 2.5V) - matches standard µP supply tolerance requirements |
| Reset Timeout | 100ms minimum - ensures clock oscillators and supply rails stabilize before processor release |
| Shutdown Current | <1µA - enables ultra-low-power sleep modes in handheld devices |
| Output Capacitor | 1µF min ceramic - supports compact layout with no ESR constraints |
Pinout & Package
MAX6329SPUT+T is housed in a 6-pin SOT23-6 package with exposed pad thermal enhancement. Pin 2 (GND) 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 protected - safe for backup-battery biasing |
| 2 GND | Ground / thermal pad | Primary return path and heat dissipation node; must be soldered to large ground plane |
| 3 SHDN | Active-low shutdown control | Pulls regulator core offline; reduces total supply current to <1µA when logic low |
| 4 RESET | Open-drain active-low reset output | Sinks 3.2mA at 0.4V max; requires external pullup for µP reset interface |
| 5 SET | Feedback configuration input | Grounded to select +2.5V fixed output; floating or divider-connected for adjustable mode |
| 6 OUT | Regulated output | Delivers up to 150mA; bypassed with ≥1µF capacitor for stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reset supervisor | Eliminates external RC network and discrete supervisor IC - saves board space and BOM count |
| Zero reverse leakage | Prevents backfeed from OUT to IN - enables seamless backup battery switchover without external diodes |
| Thermal & short-circuit protection | Auto-shutdown at 160°C junction temp with 20°C hysteresis - protects against sustained overload |
| Low-noise LDO architecture | PSRR >40dB at 1kHz (COUT = 1µF) - suppresses input ripple for noise-sensitive analog/mixed-signal loads |
| 1µF minimum output capacitor | Enables use of small, low-ESR ceramic caps - reduces solution size vs. legacy 10µF tantalum designs |
Applications
| Hand-Held Instruments | USB Devices |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by two AA cells (2.4–3.2V range) with microcontroller, ADC, and LCD display. IC Role / Device Role / Timing Role: Primary 2.5V supply regulator and power-on reset generator for MSP430 or similar ultra-low-power MCU. Use Value: 25µA quiescent current extends battery life beyond 1 year; 180mV dropout allows full regulation until battery drops to 2.68V. | Use Scenario: Self-powered USB audio interface with embedded ARM Cortex-M0, DAC, and USB PHY. IC Role / Device Role / Timing Role: Local 2.5V rail for analog front-end and reset signal synchronized to VBUS presence detection. Use Value: Open-drain RESET interfaces directly with USB PHY reset pin; zero reverse leakage prevents VBUS-to-VDD backfeed during suspend. |
| Electronic Planners | Palm Top Computers |
Use Scenario: Memory-based PDAs with SRAM retention, real-time clock, and touch controller - operating from single Li-ion cell (2.7–4.2V). IC Role / Device Role / Timing Role: Main system regulator and brownout detector ensuring clean boot after voltage sag during RF transmission. Use Value: −5% reset threshold (2.375V) triggers before critical SRAM data loss; 100ms timeout covers worst-case oscillator startup. | Use Scenario: Early Palm OS devices using DragonBall MC68328 CPU, requiring tightly regulated 2.5V I/O supply and deterministic reset timing. IC Role / Device Role / Timing Role: Dual-function power manager: supplies 2.5V logic rail and generates synchronous reset pulse aligned to VDD ramp. Use Value: SHDN pin enables deep-sleep mode with <1µA system standby current; SOT23-6 footprint fits tight QWERTY keyboard 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 |
|---|---|---|---|
| TPS76325DBVR | 250mA output, 120mV dropout at 150mA, no integrated reset - requires external supervisor (e.g., TPS3809) | Higher current capability but adds component count and board area; lacks built-in reset timeout coordination | Select when >150mA load or lower dropout is required, and external reset timing is acceptable |
| ADM6315-25ARTZ-R7 | 200mA output, 200mV dropout at 100mA, push-pull active-high RESET, no SHDN pin | Fixed +2.5V output with reset, but no shutdown control - unsuitable for ultra-low-power sleep modes | Select when active-high reset interface is needed and shutdown functionality is not required |
Compared with TPS76325DBVR and ADM6315-25ARTZ-R7, the MAX6329SPUT+T uniquely combines 150mA delivery, 25µA quiescent current, active-low open-drain RESET, and SHDN control in a single SOT23-6 package - enabling minimal-component, battery-optimized power sequencing.
Availability
MAX6329SPUT+T is available at Aetrix Electronics and suitable for hand-held instruments, USB devices, electronic planners, and palm top computers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX6329SPUT+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 precision analog, mixed-signal, and power management ICs for industrial, medical, communications, and consumer applications.
The MAX6329 series belongs to Maxim's micropower LDO regulator family with integrated reset - engineered specifically for battery-operated portable equipment where ultra-low quiescent current, small footprint, and guaranteed power-on sequencing are critical.
FAQ
What is the exact reset threshold voltage for MAX6329SPUT+T?
The MAX6329SPUT+T has a −5% reset threshold, meaning it asserts RESET when the regulated 2.5V output falls below 2.375V. This threshold is factory-trimmed and guaranteed over temperature; the device holds RESET active for a minimum of 100ms after VOUT rises above 2.375V, ensuring robust power-up sequencing for microprocessors in the MAX6329SPUT+T application.
Does MAX6329SPUT+T support adjustable output voltage?
No, MAX6329SPUT+T is configured for fixed +2.5V output only. Its suffix "S" denotes the 2.5V preset version, and the SET pin must be connected to GND per datasheet guidance. For adjustable output, select a MAX6329 variant with "W", "V", "Y", or "Z" suffix and use an external resistor divider on the SET pin - the MAX6329SPUT+T itself does not support voltage adjustment.
What is the maximum input voltage rating for MAX6329SPUT+T?
The absolute maximum input voltage for MAX6329SPUT+T is +7V, but the recommended operating range is +2.5V to +5.5V. Exceeding +5.5V may cause excessive power dissipation or thermal stress, especially at high load currents. Within the 2.5V–5.5V range, the MAX6329SPUT+T maintains full regulation, ±3.0% output accuracy, and guaranteed reset functionality across its 0°C to +85°C temperature range.
Can MAX6329SPUT+T be used with ceramic output capacitors?
Yes, MAX6329SPUT+T is fully stable with 1µF (minimum) X7R or X5R ceramic capacitors - no ESR requirements or damping resistors needed. The device's internal compensation eliminates the need for high-ESR tantalum or aluminum electrolytic caps. Using a 1µF X7R ceramic ensures optimal transient response, PSRR, and footprint reduction in portable designs using the MAX6329SPUT+T.
Is the RESET output of MAX6329SPUT+T compatible with 3.3V microcontrollers?
Yes, the open-drain RESET output of MAX6329SPUT+T is compatible with 3.3V µCs. When pulled up to 3.3V via an external resistor, RESET sinks ≤0.4V at 3.2mA - well within standard 3.3V logic low thresholds. The MAX6329SPUT+T RESET pin has no internal pullup, so proper external pullup (typically 10–100kΩ to 3.3V) is required to interface reliably with 3.3V microcontroller reset inputs.
MAX6329SPUT+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 (3.3V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.36V @ 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
MAX6329SPUT+T FAQ
1.How can I place an order for MAX6329SPUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6329SPUT+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 MAX6329SPUT+T reliable?
The price and inventory of MAX6329SPUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6329SPUT+T is usually 5 days.
3.What payment methods are accepted for MAX6329SPUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6329SPUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6329SPUT+T?
MAX6329SPUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6329SPUT+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 MAX6329SPUT+T?
For technical support, including MAX6329SPUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6329SPUT+T requirements.
6.How does Aetrix verify that MAX6329SPUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6329SPUT+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 MAX6329SPUT+T meets industry standards.
7.What is the process for return or replacement of MAX6329SPUT+T?
All MAX6329SPUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6329SPUT+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 MAX6329SPUT+T part is unused and in its original packaging.
Return procedure for MAX6329SPUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6329SPUT+T 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…
