My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6469UT285AD3-T
- Part No.:
- MAX6469UT285AD3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX6469UT285AD3-T.pdf
- Description:
- IC REG LINEAR LDO WITH MPU RESET
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6469UT285AD3-T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 2.85V output, -7.5% reset threshold, and 150ms minimum reset timeout. It features 82µA quiescent current, 55mV dropout at 150mA, and active-low push-pull RESET output. Designed for battery-powered portable equipment including Bluetooth modules and digital cameras.
For engineers reviewing the MAX6469UT285AD3-T datasheet, MAX6469UT285AD3-T pinout, MAX6469UT285AD3-T application, or MAX6469UT285AD3-T equivalent, this device delivers verified 2.85V regulation, guaranteed 300mA load capability, ±2.0% output accuracy over -40°C to +85°C, integrated shutdown (0.1µA), and thermal/short-circuit protection - all in a 6-pin SOT23 package.
Technical Context
The MAX6469UT285AD3-T integrates an LDO regulator core and a precision reset supervisor sharing the same reference. Its regulator operates from 2.5V to 5.5V input, delivering 2.85V at up to 300mA with dropout as low as 55mV at 150mA. The reset circuit monitors VOUT directly and asserts active-low RESET when voltage falls below 92.5% of nominal (–7.5% tolerance), holding assertion for ≥150ms after recovery.
This variant belongs to the MAX6469/MAX6470/MAX6473–MAX6478/MAX6481–MAX6484 subgroup featuring SHDN control (not MR or FB), confirming its active-low shutdown input and push-pull RESET configuration. Pinout matches the 6-pin SOT23 layout with IN, GND, SHDN, RESET, SET, and OUT terminals - no manual reset or remote sense functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85V - precisely trimmed and stable across temperature and load for powering 2.8V–3.0V logic rails. |
| Output Accuracy | ±2.0% over –40°C to +85°C - ensures reliable microprocessor supply compliance without external calibration. |
| Max Load Current | 300mA guaranteed - sufficient for mid-power microcontrollers, RF transceivers, and sensor interfaces. |
| Dropout Voltage | 55mV at 150mA - enables operation with <3.0V input while maintaining 2.85V output, critical for single-cell Li-ion systems. |
| Quiescent Current | 82µA typical - minimizes battery drain during active operation; drops to 0.1µA in shutdown mode. |
| Reset Threshold | –7.5% (92.5% of 2.85V = 2.64V) - triggers RESET before microprocessor brownout, meeting standard µP supply tolerance. |
| Reset Timeout | 150ms minimum - provides sufficient hold time for clock stabilization and processor initialization sequences. |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (2.7–4.2V), 3-cell alkaline (3.0–4.5V), and USB-powered designs. |
Pinout & Package
MAX6469UT285AD3-T is housed in a 6-pin SOT23 package (JEDEC MO-178AA), with exposed die pad not present. Thermal performance relies on GND pad soldering to PCB ground plane.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Regulator input - requires 0.1µF ceramic bypass to GND; accepts 2.5V–5.5V supply. |
| 2 | GND | Power and thermal ground - must connect to large PCB copper area for heat dissipation and noise control. |
| 3 | SHDN | Active-low shutdown control - tie to VIN for normal operation; pulls supply current to 0.1µA when low. |
| 4 | RESET | Active-low push-pull reset output - asserts low during power-up, brownout, or SHDN activation; holds ≥150ms. |
| 5 | SET | Feedback select - grounded internally for fixed 2.85V output; open or floating disables regulation. |
| 6 | OUT | Regulated 2.85V output - requires ≥3.3µF low-ESR ceramic capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated µP Reset Supervisor | Eliminates need for external supervisor IC by providing factory-trimmed –7.5% threshold and 150ms timeout. |
| Ultra-Low Quiescent Current | 82µA operating / 0.1µA shutdown - extends battery life in always-on portable devices like wireless sensors. |
| Low Dropout Performance | 55mV @ 150mA - enables >98% efficiency at light loads and supports operation down to 2.905V input. |
| Full Protection Suite | Includes thermal shutdown (180°C), short-circuit current limit (450mA min), and reverse current blocking (<0.01µA). |
| Robust Power Sequencing | RESET remains asserted until VOUT stabilizes above 2.64V and holds for full 150ms - ensures deterministic boot. |
| Industrial Temperature Range | Specified from –40°C to +85°C - suitable for automotive infotainment peripherals and industrial handhelds. |
Applications
| Bluetooth Module Power | Digital Camera Core Logic |
|---|---|
|
Use Scenario: Powers baseband processor and RF transceiver in compact Bluetooth headsets and audio accessories. IC Role / Device Role: Primary 2.85V LDO with integrated reset - replaces discrete regulator + supervisor combo. Use Value: 82µA quiescent current extends talk time; 150ms RESET guarantees clean boot after battery insertion or wake-from-sleep. |
Use Scenario: Supplies image signal processor (ISP) and memory interface in consumer digital cameras. IC Role / Device Role: Stable 2.85V rail generator with brownout detection - prevents corrupted frame capture during voltage sag. Use Value: ±2.0% accuracy maintains ISP timing margins; 55mV dropout preserves headroom during flash LED surge loading. |
| PCMCIA Card Regulation | USB-Powered Sensor Hub |
|
Use Scenario: Provides regulated 2.85V to PCMCIA Wi-Fi or GPS cards inserted into laptops or field terminals. IC Role / Device Role: Hot-swap capable LDO with undervoltage lockout - prevents card malfunction during partial insertion. Use Value: Input UVLO at 2.25V blocks operation below safe margin; SHDN allows host-controlled power gating. |
Use Scenario: Powers multi-sensor fusion hub (accelerometer, gyroscope, environmental) in USB-C powered IoT edge nodes. IC Role / Device Role: Primary system rail LDO - handles dynamic load steps from sensor sampling bursts. Use Value: 300mA rating supports concurrent sensor actuation; 75µVRMS noise (typ) avoids analog measurement interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76328DBVR | 2.8V fixed output, no integrated reset, 85µA IQ, 300mA, SOT23-5 | Requires external reset IC (e.g., TPS3809) for supervisor function | Select when reset timing or threshold flexibility is needed, or when board space permits separate supervisor. |
| NCP1117ST28T3G | 2.85V fixed output, no reset, 6mA IQ, 800mA, SOT223 | Lacks reset supervision and shutdown; higher quiescent current limits battery use | Choose for cost-sensitive, non-battery applications where reset is handled elsewhere or unnecessary. |
Compared with MAX6469UT285AD3-T, TPS76328DBVR offers identical package and load capability but requires external reset circuitry, increasing BOM count and layout complexity. NCP1117ST28T3G delivers higher current and lower cost but lacks supervision, shutdown, and ultra-low IQ - making it unsuitable for portable or safety-critical embedded systems.
Availability
MAX6469UT285AD3-T is available at Aetrix Electronics and suitable for Bluetooth modules, digital cameras, PCMCIA cards, and USB-powered sensor hubs requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance.
Supply support for MAX6469UT285AD3-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 demanding industrial, communications, and portable applications.
MAX6469–MAX6484 belong to Maxim's ultra-low-IQ LDO family targeting battery-powered microprocessor systems, integrating regulation, reset supervision, and protection in minimal footprint packages.
FAQ
What output voltage does the MAX6469UT285AD3-T deliver?
The MAX6469UT285AD3-T delivers a fixed 2.85V output voltage, factory-trimmed to ±2.0% accuracy over –40°C to +85°C. This value is encoded in the part number suffix "285" and cannot be adjusted - the SET pin must be tied to GND for proper operation of the MAX6469UT285AD3-T.
Does the MAX6469UT285AD3-T include a shutdown feature?
Yes, the MAX6469UT285AD3-T includes an active-low shutdown input (SHDN, Pin 3). When pulled low, it reduces total supply current to 0.1µA (typ), disabling regulation and RESET assertion. For normal operation, SHDN must be tied to IN. This feature is confirmed for MAX6469UT285AD3-T per the MAX6469–MAX6470/MAX6473–MAX6478 subgroup specification.
What is the reset timeout duration for the MAX6469UT285AD3-T?
The MAX6469UT285AD3-T has a 150ms minimum reset timeout period, indicated by the "D3" suffix in the part number. RESET remains asserted for ≥150ms after VOUT rises above the –7.5% threshold (2.64V), ensuring sufficient time for clock stabilization and processor initialization before release.
Is the MAX6469UT285AD3-T compatible with single-cell Li-ion batteries?
Yes, the MAX6469UT285AD3-T supports input voltages from 2.5V to 5.5V, covering the full discharge range of a single-cell Li-ion battery (2.7V–4.2V). With only 55mV dropout at 150mA, it maintains 2.85V output down to 2.905V input - enabling >95% usable battery capacity in portable designs using MAX6469UT285AD3-T.
What protection features are built into the MAX6469UT285AD3-T?
The MAX6469UT285AD3-T integrates thermal shutdown (180°C trip, 20°C hysteresis), short-circuit current limiting (450mA min), reverse current blocking (<0.01µA OUT-to-IN leakage), and input undervoltage lockout (2.25V). These protections are fully specified in the Absolute Maximum Ratings and Electrical Characteristics tables for MAX6469UT285AD3-T.
MAX6469UT285AD3-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):
- 1.2V (2.85V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 136 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6469UT285AD3-T FAQ
1.How can I place an order for MAX6469UT285AD3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6469UT285AD3-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 MAX6469UT285AD3-T reliable?
The price and inventory of MAX6469UT285AD3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6469UT285AD3-T is usually 5 days.
3.What payment methods are accepted for MAX6469UT285AD3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6469UT285AD3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6469UT285AD3-T?
MAX6469UT285AD3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6469UT285AD3-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 MAX6469UT285AD3-T?
For technical support, including MAX6469UT285AD3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6469UT285AD3-T requirements.
6.How does Aetrix verify that MAX6469UT285AD3-T is sourced from the original manufacturer or authorized distributors?
All MAX6469UT285AD3-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 MAX6469UT285AD3-T meets industry standards.
7.What is the process for return or replacement of MAX6469UT285AD3-T?
All MAX6469UT285AD3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6469UT285AD3-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 MAX6469UT285AD3-T part is unused and in its original packaging.
Return procedure for MAX6469UT285AD3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6469UT285AD3-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…
