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Analog Devices Inc./Maxim Integrated MAX6469TA30BD3+T
- Part No.:
- MAX6469TA30BD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6469TA30BD3+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,224
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Product details
Overview
MAX6469TA30BD3+T from Maxim Integrated is a 3.0V, 300mA low-dropout linear regulator with integrated microprocessor reset circuit, 82µA quiescent current, 114mV dropout at full load, and 150ms minimum reset timeout. It features active-low push-pull RESET, shutdown control (0.1µA), and operates across -40°C to +85°C - designed for battery-powered portable systems requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6469TA30BD3+T datasheet, MAX6469TA30BD3+T pinout, MAX6469TA30BD3+T application, or MAX6469TA30BD3+T equivalent, this device delivers verified fixed-output LDO regulation with integrated supervisor functionality - critical for handheld instruments, USB peripherals, Bluetooth modules, and notebook subsystems where supply stability and deterministic reset timing are mandatory.
Technical Context
The MAX6469TA30BD3+T integrates a precision bandgap-referenced LDO core and a dedicated reset supervisor sharing the same voltage reference. Its regulator uses a PMOS pass device enabling low dropout (55mV @ 150mA, 114mV @ 300mA) and reverse current blocking (0.01µA OUT→IN leakage). The reset circuit monitors VOUT against a -7.5% threshold (suffix 'B') and asserts active-low RESET for ≥150ms after recovery (suffix 'D3').
This variant belongs to the MAX6469–MAX6470 subgroup: it includes SHDN (pin 3), lacks MR, and uses SET (pin 5) for fixed-output selection (tied to GND). It does not support manual reset or remote sense - confirmed by pin function mapping and ordering guide constraints for TA-suffix parts in TDFN-EP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.7% over -40°C to +85°C - ensures stable core logic supply for 3.3V-tolerant microcontrollers. |
| Max Output Current | 300mA guaranteed - sufficient to power baseband processors, RF transceivers, or sensor hubs without external boost. |
| Dropout Voltage | 114mV at 300mA - enables operation down to VIN = 3.114V, extending battery runtime in single-cell Li-ion or 3×alkaline systems. |
| Quiescent Current | 82µA typical - minimizes standby drain; drops to 0.1µA in shutdown mode for ultra-low-power sleep states. |
| Reset Threshold | -7.5% of VOUT (2.775V nominal) - triggers RESET before µP supply violation, meeting JEDEC JESD8-12A tolerance requirements. |
| Reset Timeout | 150ms minimum - provides sufficient hold-off for oscillator stabilization and memory initialization before release. |
| Input Voltage Range | 2.5V to 5.5V - compatible with wide-input sources including USB, DC-DC pre-regulators, and multi-cell batteries. |
Pinout & Package
MAX6469TA30BD3+T is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad (EP) internally connected to GND. Pin 1 is IN; Pin 2 is GND; Pin 3 is SHDN; Pin 4 is RESET; Pin 5 is SET; Pin 6 is OUT; Pins 7–8 are NC (no internal connection); EP must be soldered to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input supply | Accepts 2.5V–5.5V; requires 0.1µF ceramic bypass to GND for stability and transient response. |
| 2 (GND) | Power and thermal reference | Primary ground return; also serves as heatsink - must connect to large copper area or internal ground plane. |
| 3 (SHDN) | Active-low shutdown control | Pulling low disables regulator and reduces supply current to ≤1µA; tied to VIN for normal operation. |
| 4 (RESET) | Active-low push-pull reset output | Asserts low during power-up, brownout, or SHDN activation; remains low ≥150ms after recovery. |
| 5 (SET) | Feedback configuration selector | Connected to GND to enable preset 3.0V output; left floating or driven externally only in adjustable variants. |
| 6 (OUT) | Regulated output | Delivers up to 300mA at 3.0V; requires ≥3.3µF low-ESR ceramic capacitor to GND for loop stability. |
| 7–8 (NC) | No internal connection | Not bonded; electrically isolated - no routing or termination required. |
| EP | Exposed thermal pad | Internally tied to GND; must be soldered to PCB ground pour to achieve θJA ≤ 41°C/W and prevent thermal shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reset supervisor | Eliminates need for discrete supervisor IC - reduces BOM count and layout area while guaranteeing synchronized power-good signaling. |
| Low dropout with PMOS pass device | Enables high-efficiency regulation from marginal input sources (e.g., aging alkaline cells or Li-ion at end-of-discharge). |
| Reverse current protection | 0.01µA typical OUT→IN leakage prevents backfeeding into primary battery when backup source is present. |
| Thermal and short-circuit protection | Auto-recovering shutdown at +180°C junction temperature and 450mA current limit - ensures robustness under fault conditions. |
| Ultra-low quiescent current | 82µA operating / 0.1µA shutdown - extends shelf life and operational runtime in always-on IoT edge nodes and wearables. |
Applications
| Handheld Instruments | USB Peripheral Devices |
|---|---|
|
Use Scenario: Powering PDA main logic and touchscreen controller from dual AA/AAA batteries with dynamic load switching. IC Role / Device Role / Timing Role: Primary 3.0V LDO regulator and system reset initiator - ensures clean boot after battery insertion and brownout recovery. Use Value: 114mV dropout preserves usable battery range down to 3.114V; 150ms RESET timeout aligns with ARM Cortex-M startup sequence. |
Use Scenario: Regulating 3.0V supply for USB-to-serial bridge IC and EEPROM in compact dongle design. IC Role / Device Role / Timing Role: Fixed-output power source with integrated supervisor - replaces separate LDO + reset IC pair on space-constrained PCB. Use Value: 82µA quiescent current meets USB suspend current budget; push-pull RESET drives standard µP reset pin without pullup. |
| Bluetooth Audio Modules | Notebook Subsystem Rails |
|
Use Scenario: Supplying 3.0V to BLE SoC and MEMS microphone in hearing aid or earbud PCB. IC Role / Device Role / Timing Role: Low-noise, low-IQ regulator with deterministic reset - critical for fast wake-from-sleep and RF calibration stability. Use Value: 75µVRMS noise (shared family spec) avoids RF desense; -40°C to +85°C rating supports consumer ambient extremes. |
Use Scenario: Generating auxiliary 3.0V rail for embedded controller (EC), keyboard backlight, or smart battery interface. IC Role / Device Role / Timing Role: Secondary regulated supply with coordinated reset assertion - synchronizes EC firmware boot with main CPU power domain. Use Value: SHDN pin allows EC to disable rail during deep sleep; RESET output feeds EC's WAKE# input for hardware-triggered resume. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76330QDBVRQ1 | 300mA LDO with 120mV dropout at 300mA; reset threshold -10% (fixed); 200ms timeout; no SHDN pin. | Lacks shutdown control; reset accuracy looser (±3% vs ±2.7%); automotive-qualified but higher IQ (110µA). | Choose if AEC-Q100 qualification is required and shutdown is managed externally. |
| NCP1117ST30T3G | 800mA LDO with 1.2V dropout at 300mA; no integrated reset; requires external supervisor (e.g., MAX6315). | Higher current capability but larger solution size and higher cost due to dual-IC implementation. | Choose only if >300mA load or adjustable output is needed - otherwise adds unnecessary complexity. |
Compared with TPS76330QDBVRQ1 and NCP1117ST30T3G, MAX6469TA30BD3+T uniquely combines precise ±2.7% output accuracy, 0.1µA shutdown, and factory-configured 150ms reset timeout in a single 3×3mm TDFN package - minimizing footprint and validation effort for portable designs.
Availability
MAX6469TA30BD3+T is available at Aetrix Electronics and suitable for handheld instruments, USB peripheral devices, Bluetooth audio modules, and notebook subsystem rails requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX6469TA30BD3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
MAX6469TA30BD3+T belongs to the MAX6469–MAX6484 family of integrated LDO + reset supervisors - engineered specifically for battery-powered portable equipment demanding ultra-low quiescent current, tight output accuracy, and deterministic power-on reset behavior.
FAQ
What is the exact output voltage tolerance of MAX6469TA30BD3+T over temperature?
The MAX6469TA30BD3+T guarantees ±2.7% output voltage accuracy over the full -40°C to +85°C operating range, as specified in the Electrical Characteristics table for fixed-output operation (MAX6469–MAX6476 series). This tolerance applies to the 3.0V nominal output set by the '30' suffix and is measured with 1mA ≤ IOUT ≤ 300mA. At +25°C, the tighter ±1.3% typical accuracy is observed.
Does MAX6469TA30BD3+T support manual reset (MR) functionality?
No, MAX6469TA30BD3+T does not support manual reset. Its pinout (IN, GND, SHDN, RESET, SET, OUT) and ordering code structure confirm it belongs to the MAX6469/MAX6470 subgroup, which implements shutdown control instead of MR. Manual reset is only available on MAX6471–MAX6474 and MAX6479–MAX6482 variants, identifiable by different pin 3 assignments and ordering suffixes.
What is the purpose of the SET pin on MAX6469TA30BD3+T?
On MAX6469TA30BD3+T, the SET pin (pin 5) is used exclusively to select fixed-output mode: tying SET to GND activates the internal resistor divider that sets the output to 3.0V. It is not used for adjustable operation - that capability is reserved for MAX6469–MAX6472/MAX6477–MAX6480 variants with different internal feedback architecture and ordering codes.
Can MAX6469TA30BD3+T be used with input voltages below 2.5V?
No, MAX6469TA30BD3+T has a minimum input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V risks undervoltage lockout (VUVLO = 2.25V min), causing regulator disable and RESET assertion. For sub-2.5V inputs, consider alternative LDOs such as the MAX1725 or TPS780xx series.
Is the exposed pad (EP) on MAX6469TA30BD3+T electrically connected?
Yes, the exposed pad (EP) on MAX6469TA30BD3+T is internally connected to GND and must be soldered to the PCB ground plane. It serves as the primary thermal path - not an electrical signal - and omission causes thermal resistance to rise from 41°C/W to >100°C/W, risking thermal shutdown under 300mA load at elevated ambient temperatures.
MAX6469TA30BD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- 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):
- 1.2V (3V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.19V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 136 µA
- Current - Supply (Max):
- 96 µA
- PSRR:
- -
- Control Features:
- Reset, Shutdown
- 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:
- 8-TDFN (3x3)
MAX6469TA30BD3+T FAQ
1.How can I place an order for MAX6469TA30BD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6469TA30BD3+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 MAX6469TA30BD3+T reliable?
The price and inventory of MAX6469TA30BD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6469TA30BD3+T is usually 5 days.
3.What payment methods are accepted for MAX6469TA30BD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6469TA30BD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6469TA30BD3+T?
MAX6469TA30BD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6469TA30BD3+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 MAX6469TA30BD3+T?
For technical support, including MAX6469TA30BD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6469TA30BD3+T requirements.
6.How does Aetrix verify that MAX6469TA30BD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6469TA30BD3+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 MAX6469TA30BD3+T meets industry standards.
7.What is the process for return or replacement of MAX6469TA30BD3+T?
All MAX6469TA30BD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6469TA30BD3+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 MAX6469TA30BD3+T part is unused and in its original packaging.
Return procedure for MAX6469TA30BD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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