My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6349YPUT-T
- Part No.:
- MAX6349YPUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX6349YPUT-T.pdf
- Description:
- IC REG LIN POS ADJ 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:1,579
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6349YPUT-T from Maxim Integrated is a 150mA low-dropout linear voltage regulator with integrated microprocessor reset circuit, preset +1.8V output (±3.0% accuracy), 25µA quiescent current, and 180mV dropout at 100mA - designed for battery-powered portable electronics requiring stable supply and reliable power-on reset.
For engineers reviewing the MAX6349YPUT-T datasheet, MAX6349YPUT-T pinout, MAX6349YPUT-T application, or MAX6349YPUT-T equivalent, this device delivers verified reset timeout (100ms min), manual reset input (MR), open-drain active-low RESET output, thermal/short-circuit protection, and SOT23-6 compatibility for space-constrained embedded designs.
Technical Context
The MAX6349YPUT-T integrates a P-channel MOSFET LDO regulator core with a precision 1.23V internal reference shared by both regulation and reset functions. Its reset circuit monitors VOUT against a -10% threshold (2.08V to 2.28V for +1.8V output) and asserts open-drain RESET for ≥100ms after recovery.
It features a dedicated MR input with 20kΩ internal pullup to OUT, 120ns glitch rejection, and 500ns MR-to-reset delay - enabling robust manual reset initiation without external components. Reverse leakage protection ensures zero current flow from OUT to IN when VOUT > VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.8V ±3.0% - fixed output set by internal feedback; meets microprocessor supply tolerance requirements. |
| Max Output Current | 150mA - sufficient to power low-power MCUs, sensors, and USB peripherals without external boost. |
| Dropout Voltage | 180mV at 100mA - enables operation down to VIN = 1.98V, extending battery life in single-cell Li-ion or alkaline systems. |
| Quiescent Current | 25µA - ultra-low supply current independent of load, critical for multi-year battery operation in standby mode. |
| Reset Threshold | 2.08V to 2.28V (−10% of 1.8V) - precise brownout detection aligned with processor supply spec. |
| Reset Timeout | 100ms minimum - guarantees clock stabilization and memory initialization before processor release. |
| MR Input Logic | Active-low with 0.2×VOUT VIL, 0.8×VOUT VIH - compatible with standard CMOS/TTL logic and momentary switches. |
Pinout & Package
MAX6349YPUT-T is housed in a 6-pin SOT23-6 package with exposed pad for thermal dissipation. 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 protection prevents backfeed from OUT. |
| 2 GND | Ground / thermal pad | Reference node and primary heat path; must be soldered to large ground plane for thermal reliability. |
| 3 MR | Manual reset input | Active-low input with 20kΩ internal pullup to OUT; initiates reset while VOUT remains in spec. |
| 4 RESET | Open-drain active-low reset output | Sinks 3.2mA at 0.4V; requires external pullup for system-level reset assertion to µP. |
| 5 SET | Feedback reference input | Connected to GND for +1.8V fixed output; unused in this variant - not left floating. |
| 6 OUT | Regulated output | Delivers up to 150mA at +1.8V; bypassed with ≥1µF ceramic capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated manual reset (MR) | Enables operator- or test-initiated reset without external circuitry - eliminates need for RC networks or dedicated supervisors. |
| Zero reverse leakage current | Prevents backup battery discharge through IN pin when main supply fails - no external blocking diode required. |
| Thermal shutdown with 20°C hysteresis | Protects against sustained overload; auto-recovery prevents latch-up during intermittent thermal stress. |
| 1µF minimum output capacitance | Reduces BOM count and board area vs. legacy regulators requiring ≥10µF tantalum - supports compact portable layouts. |
| 100ms reset timeout guarantee | Ensures deterministic system boot timing across temperature and voltage - simplifies firmware startup sequencing. |
Applications
| Hand-Held Instruments | USB Devices |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by coin-cell or AA batteries with strict low-power budget. IC Role / Device Role / Timing Role: Primary 1.8V supply regulator and power-on reset generator for MCU and ADC subsystems. Use Value: 25µA quiescent current extends battery life to multi-year operation; 180mV dropout allows full utilization of declining battery voltage. | Use Scenario: Self-powered USB peripherals such as HID keyboards or sensor dongles drawing <100mA from VBUS. IC Role / Device Role / Timing Role: Local 1.8V rail generation and reset supervision for USB controller IC during plug-in and enumeration. Use Value: MR input enables user-triggered re-enumeration; open-drain RESET interfaces directly with USB controller's reset pin. |
| Cellular Telephones | Palm Top Computers |
Use Scenario: Baseband processor auxiliary rail in feature phones where space and efficiency are constrained. IC Role / Device Role / Timing Role: Secondary LDO supplying 1.8V to RF transceiver I/O or memory interface, with synchronized reset assertion. Use Value: −10% reset threshold (2.08V–2.28V) matches 1.8V supply tolerance; SOT23-6 footprint minimizes layout area. | Use Scenario: Power management in legacy Palm OS PDAs using single-cell Li-ion with tight voltage margins. IC Role / Device Role / Timing Role: Main 1.8V core supply for ARM7-based SoC and coordinated reset signal for bootloader execution. Use Value: 100ms reset timeout exceeds typical oscillator start time; thermal protection prevents failure during extended backlight use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout regulator with manual reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6329YPUT-T | No MR input; includes SHDN instead - shutdown current <1µA vs. MAX6349YPUT-T's 25µA active current. | Used where system-level power gating is preferred over manual reset; unsuitable for field-service reset needs. | Select MAX6329YPUT-T only if shutdown control is prioritized and MR functionality is unnecessary. |
| TPS76318QDBVRQ1 | 150mA LDO with 2% accuracy and 220mV dropout at 150mA; no integrated MR or reset - requires external supervisor (e.g., TPS3809). | Demands additional BOM line and PCB area; reset timing less tightly coupled to VOUT behavior than MAX6349YPUT-T. | Choose only when AEC-Q100 qualification is mandatory and discrete supervisor integration is acceptable. |
Compared with MAX6329YPUT-T, MAX6349YPUT-T trades shutdown capability for field-serviceable reset initiation; versus TPS76318QDBVRQ1, it reduces component count and improves reset timing accuracy by integrating MR and reset logic on-die.
Availability
MAX6349YPUT-T is available at Aetrix Electronics and suitable for hand-held instruments, USB devices, and cellular telephones requiring stable component supply, long-term lifecycle support, and guaranteed reset timing behavior.
Supply support for MAX6349YPUT-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 and mixed-signal ICs for power, sensing, and interface applications.
The MAX6329/MAX6349 family targets battery-powered portable equipment needing integrated regulation and reset - optimized for minimal quiescent current, small footprint, and deterministic power-up sequencing.
FAQ
What is the reset threshold voltage range for MAX6349YPUT-T?
The MAX6349YPUT-T has a −10% reset threshold for its +1.8V output, specified as 2.08V to 2.28V. This range is factory-trimmed and guaranteed over temperature; it reflects the voltage at which the open-drain RESET output asserts low when VOUT drops below tolerance. The threshold tracks the actual output voltage and is derived from the same 1.23V internal reference used for regulation.
Does MAX6349YPUT-T require an external pullup resistor on the RESET pin?
Yes, MAX6349YPUT-T uses an open-drain active-low RESET output, so an external pullup resistor to the monitored supply (typically VOUT or a higher rail) is required to generate a valid logic-high level when reset is inactive. The datasheet specifies sink capability of 3.2mA at 0.4V, supporting standard 10kΩ–100kΩ pullups depending on bus capacitance and rise-time requirements.
Can the SET pin of MAX6349YPUT-T be left unconnected?
No - the SET pin of MAX6349YPUT-T must be connected to GND to configure the +1.8V fixed output. Leaving SET floating may cause undefined regulation behavior or instability. The device detects SET voltage to select between fixed and adjustable modes; for Y-version parts, grounding SET activates the internal 1.8V feedback divider.
What is the maximum input voltage rating for MAX6349YPUT-T?
The absolute maximum input voltage for MAX6349YPUT-T is +7V applied to the IN pin relative to GND. However, the recommended operating range is +2.5V to +5.5V. Exceeding +5.5V risks violating safe operating area limits and may trigger thermal shutdown or damage due to excessive power dissipation, especially at high load currents.
How does the MR input behave during normal operation of MAX6349YPUT-T?
During normal operation, the MR input of MAX6349YPUT-T remains inactive (high) due to its internal 20kΩ pullup to OUT. A logic-low pulse ≥1µs on MR forces RESET low for the full 100ms timeout period, regardless of VOUT status - enabling reliable manual reset even when supply is nominal. Glitch rejection of 120ns prevents false triggering from noise.
MAX6349YPUT-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 (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:
- Manual 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
MAX6349YPUT-T FAQ
1.How can I place an order for MAX6349YPUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6349YPUT-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 MAX6349YPUT-T reliable?
The price and inventory of MAX6349YPUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6349YPUT-T is usually 5 days.
3.What payment methods are accepted for MAX6349YPUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6349YPUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6349YPUT-T?
MAX6349YPUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6349YPUT-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 MAX6349YPUT-T?
For technical support, including MAX6349YPUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6349YPUT-T requirements.
6.How does Aetrix verify that MAX6349YPUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6349YPUT-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 MAX6349YPUT-T meets industry standards.
7.What is the process for return or replacement of MAX6349YPUT-T?
All MAX6349YPUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6349YPUT-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 MAX6349YPUT-T part is unused and in its original packaging.
Return procedure for MAX6349YPUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6349YPUT-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…
