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Analog Devices Inc./Maxim Integrated MAX6329TPUT-T
- Part No.:
- MAX6329TPUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX6329TPUT-T.pdf
- Description:
- IC REG LIN POS ADJ 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:4,289
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Product details
Overview
The MAX6329TPUT-T from Maxim Integrated is a 150mA, +3.3V fixed-output low-dropout linear regulator with integrated microprocessor reset circuit, featuring 25µA quiescent current, 180mV dropout at 100mA, and open-drain active-low RESET output - designed for power management and system supervision in portable battery-powered devices such as USB peripherals and handheld instruments.
For engineers reviewing the MAX6329TPUT-T datasheet, MAX6329TPUT-T pinout, MAX6329TPUT-T application, or MAX6329TPUT-T equivalent, key selection criteria include its preset +3.3V output, -5% reset threshold (2.92V min), 100ms minimum reset timeout, shutdown capability, and SOT23-6 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6329TPUT-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 delivers up to 150mA with ±3.0% output accuracy over temperature and load.
The reset circuit monitors VOUT against a factory-trimmed -5% threshold (2.92V for +3.3V output), asserts open-drain RESET low during undervoltage/brownout, and holds reset for ≥100ms after recovery - eliminating need for external RC timing networks or discrete supervisors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +3.3V fixed (±3.0% accuracy over 0°C to +85°C) |
| Max Output Current | 150mA - sufficient to power microcontrollers, sensors, and USB PHYs |
| Dropout Voltage | 180mV at 100mA - enables operation down to VIN = 3.48V while maintaining regulated 3.3V |
| Quiescent Current | 25µA - extends battery life in always-on monitoring circuits |
| Reset Threshold | 2.92V (−5% of 3.3V) - ensures reliable µP reset before supply violation exceeds tolerance |
| Reset Timeout | 100ms minimum - guarantees clock and supply stabilization before processor release |
| Shutdown Current | <1µA - enables ultra-low-power sleep mode when SHDN is pulled low |
| Package | SOT23-6 - 2.9mm × 1.6mm footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6329TPUT-T is housed in a 6-pin SOT23-6 package with exposed thermal pad (GND pin functions as heatsink). Pin 1 is IN; Pin 2 is GND; Pin 3 is SHDN (active-low shutdown); Pin 4 is RESET (open-drain active-low); Pin 5 is SET (tied to GND for +3.3V mode); Pin 6 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.5V–5.5V unregulated supply; must be bypassed with ≥1µF capacitor |
| 2 (GND) | Ground / thermal sink | Reference node for all circuitry; solder to large copper area for thermal dissipation |
| 3 (SHDN) | Active-low shutdown control | Pulling low disables regulator, reducing total supply current to <1µA |
| 4 (RESET) | Open-drain active-low reset output | Drives low during undervoltage; requires external pullup for logic-level interface |
| 5 (SET) | Feedback voltage select | Tied to GND to enable +3.3V fixed output; left floating or misconnected disables regulation |
| 6 (OUT) | Regulated output | Delivers up to 150mA at +3.3V; bypass with ≥1µF ceramic capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reset supervisor | Replaces external RC network or discrete supervisor IC - reduces BOM count and board area |
| Zero reverse leakage protection | Prevents backfeed from OUT to IN when backup battery powers system - eliminates need for external blocking diode |
| Thermal & short-circuit protection | Shuts down pass transistor at 160°C junction temp; recovers after 20°C hysteresis - protects against sustained overload |
| 1µF minimum output capacitance | Enables stable operation with small, low-ESR ceramic caps - simplifies layout and lowers cost vs. larger tantalum solutions |
| Adjustable or fixed output modes | SET pin allows seamless transition from +3.3V fixed to adjustable range (1.23V–5.0V) using external resistor divider |
Applications
| USB Peripheral Power | Handheld Instrument Supply |
|---|---|
Use Scenario: Powering USB 2.0 transceivers and microcontrollers in portable diagnostic tools with single-cell Li-ion input. IC Role / Device Role / Timing Role: Provides clean, regulated +3.3V rail and asserts RESET until VOUT stabilizes post-power-up - ensuring deterministic µP boot sequence. Use Value: 25µA quiescent current extends battery runtime; 180mV dropout enables >90% battery utilization before brownout. | Use Scenario: Supplying analog front-end sensors and low-power MCU in field-deployable multimeters. IC Role / Device Role / Timing Role: Acts as primary LDO regulator and system supervisor - monitors VOUT and triggers hardware reset on battery sag or cold start. Use Value: −5% reset threshold (2.92V) aligns with ARM Cortex-M0+ supply specs; 100ms timeout prevents premature wake-up during oscillator settling. |
| PCMCIA Card Regulation | Cellular Modem Standby |
Use Scenario: Regulating +3.3V for PCMCIA Type II cards in legacy industrial laptops with variable bus voltage. IC Role / Device Role / Timing Role: Delivers stable output across 3.3V–5.5V input range while asserting RESET during hot-insertion transients. Use Value: Input reverse leakage protection prevents card backfeed into host; SHDN pin enables software-controlled power gating. | Use Scenario: Maintaining always-on 3.3V rail for LTE modem real-time clock and wake-up logic during deep-sleep cycles. IC Role / Device Role / Timing Role: Supplies standby power and generates controlled reset pulse upon exit from ultra-low-power mode. Use Value: <1µA shutdown current meets 3GPP TS 27.007 sleep current requirements; open-drain RESET interfaces directly with modem's nRESET pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6330TPUT-T | +3.3V output with −10% reset threshold (2.75V) and push-pull active-high RESET | Suitable where higher reset hysteresis is needed or where active-high reset signaling is required by host µP | Select MAX6330TPUT-T only if system design mandates active-high reset assertion or wider reset window tolerance |
| TPS3808G33DBVR | Separate 3.3V LDO (TPS76333) + independent supervisor (TPS3808); no integrated reset logic or SHDN | Requires two ICs and external timing components; lacks shutdown function and reverse leakage protection | Choose TPS3808G33DBVR only if dual-chip architecture is acceptable and thermal/leakage constraints are less stringent |
Compared with MAX6329TPUT-T, MAX6330TPUT-T offers different reset polarity and threshold but identical regulation performance and package; TPS3808G33DBVR provides comparable supervision but requires external LDO and lacks integrated shutdown or reverse leakage protection - making MAX6329TPUT-T superior for compact, battery-sensitive designs.
Availability
MAX6329TPUT-T is available at Aetrix Electronics and suitable for USB device power, handheld instrumentation, and cellular modem standby applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX6329TPUT-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, and communications systems.
The MAX6329 series belongs to Maxim's micropower supervisory LDO family - engineered specifically for battery-powered portable equipment needing combined regulation and reset functionality in minimal footprint.
FAQ
What is the reset threshold voltage for MAX6329TPUT-T?
The MAX6329TPUT-T features a factory-trimmed −5% reset threshold relative to its +3.3V output, resulting in a nominal VTH of 3.135V and a guaranteed minimum of 2.92V. This threshold is monitored continuously and triggers the open-drain RESET output low whenever VOUT falls below this level, ensuring µP reset before supply violation exceeds specification limits.
Does MAX6329TPUT-T support adjustable output voltage?
Yes, the MAX6329TPUT-T supports adjustable output via the SET pin. While configured as +3.3V fixed output when SET is tied to GND, connecting an external resistor divider between OUT, SET, and GND enables output voltages from 1.23V to 5.0V using VOUT = 1.23V × (1 + R1/R2). The MAX6329TPUT-T automatically detects feedback configuration without additional mode pins.
What is the maximum load current supported by MAX6329TPUT-T?
The MAX6329TPUT-T delivers up to 150mA of continuous output current under specified conditions (VIN ≥ VOUT + dropout, TA ≤ +85°C). Its internal current limit is set to 350mA typical, allowing safe short-circuit operation without damage. For full 150mA performance, use ≥1µF output capacitance and ensure adequate PCB copper for thermal dissipation via the GND pin.
How does the shutdown function work on MAX6329TPUT-T?
The MAX6329TPUT-T includes an active-low SHDN pin (Pin 3) that disables the regulator core when pulled low, reducing total supply current to <1µA. During shutdown, the pass transistor, error amplifier, reference, and bias circuits are powered down. To resume regulation, drive SHDN high (≥0.8×VIN); startup time from shutdown is typically 500µs with 1µF output capacitor.
Is MAX6329TPUT-T compatible with ceramic output capacitors?
Yes, the MAX6329TPUT-T is fully compatible with ceramic output capacitors, requiring only a minimum of 1µF. X7R or X5R dielectrics are recommended for stable ESR across temperature; Z5U/Y5V types may require ≥2.2µF below −10°C. The regulator's stability is optimized for low-ESR ceramics, enabling smaller size, lower cost, and improved transient response versus tantalum alternatives.
MAX6329TPUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-6
MAX6329TPUT-T FAQ
1.How can I place an order for MAX6329TPUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6329TPUT-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 MAX6329TPUT-T reliable?
The price and inventory of MAX6329TPUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6329TPUT-T is usually 5 days.
3.What payment methods are accepted for MAX6329TPUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6329TPUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6329TPUT-T?
MAX6329TPUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6329TPUT-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 MAX6329TPUT-T?
For technical support, including MAX6329TPUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6329TPUT-T requirements.
6.How does Aetrix verify that MAX6329TPUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6329TPUT-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 MAX6329TPUT-T meets industry standards.
7.What is the process for return or replacement of MAX6329TPUT-T?
All MAX6329TPUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6329TPUT-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 MAX6329TPUT-T part is unused and in its original packaging.
Return procedure for MAX6329TPUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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