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Analog Devices Inc./Maxim Integrated MAX6469TA30BD3+
- Part No.:
- MAX6469TA30BD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6469TA30BD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:821
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Product details
Overview
MAX6469TA30BD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 3.0V output, ±2.0% output voltage accuracy over -40°C to +85°C, 114mV dropout at 300mA load, and 2.5ms reset timeout. It delivers stable power and reliable reset signaling for battery-powered microprocessor systems requiring compact, low-quiescent-current regulation.
For engineers reviewing the MAX6469TA30BD3+ datasheet, MAX6469TA30BD3+ pinout, MAX6469TA30BD3+ application, or MAX6469TA30BD3+ equivalent, this device serves as a single-chip solution combining LDO regulation, undervoltage monitoring, active-low push-pull/open-drain reset assertion, shutdown control, and thermal/short-circuit protection - all in an 8-pin TDFN-EP package.
Technical Context
The MAX6469TA30BD3+ integrates a precision bandgap-referenced LDO core and a synchronous reset supervisor sharing the same reference. Its regulator uses a PMOS pass transistor enabling ultra-low dropout (55mV at 150mA) and reverse current blocking (0.01µA OUT→IN leakage). The reset circuit monitors VOUT against a -7.5% threshold (indicated by "A" suffix), asserts RESET within 35µs of fault detection, and holds it for a guaranteed minimum 2.5ms after recovery.
This variant belongs to the MAX6469–MAX6470/MAX6473–MAX6478/MAX6481–MAX6484 subgroup: it includes active-low SHDN (pin 3), supports preset 3.0V output via SET-to-GND connection, and lacks MR or FB pins - confirming its role as a fixed-output, shutdown-enabled, non-manual-reset, non-remote-sense regulator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.0% over -40°C to +85°C - ensures stable core logic supply for 3.0V microcontrollers without external feedback components. |
| Max Output Current | 300mA guaranteed - sufficient to power mid-complexity SoCs, RF transceivers, or sensor subsystems in portable devices. |
| Dropout Voltage | 114mV at 300mA load - enables operation down to VIN = 3.114V, critical for single-cell Li-ion or triple-alkaline battery systems. |
| Supply Current | 82µA typical quiescent current - extends battery life in always-on monitoring or sleep-mode applications. |
| Reset Threshold | -7.5% of nominal VOUT (2.775V) - meets standard microprocessor supply tolerance requirements and avoids false resets during transient dips. |
| Reset Timeout | 2.5ms minimum - provides adequate stabilization time for clock oscillators and memory before processor release. |
| Shutdown Current | 0.1µA typical - reduces system standby power to nanoampere levels when host MCU disables regulation. |
Pinout & Package
MAX6469TA30BD3+ is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad (EP) internally connected to GND. The EP must be soldered to PCB ground plane for thermal management and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.5V–5.5V input; requires 0.1µF ceramic bypass to GND for stability and noise rejection. |
| 2 (GND) | Ground reference & thermal path | Primary return path; connects internally to EP - must be tied to large copper area for thermal dissipation. |
| 3 (SHDN) | Active-low shutdown control | Pulling low disables regulator and reduces supply current to 0.1µA; connect to VIN for normal operation. |
| 4 (RESET) | Active-low reset output | Push-pull configuration (per "D" suffix); asserts low during power-up, brownout, or SHDN activation until timeout expires. |
| 5 (SET) | Feedback select input | Connected to GND to enable fixed 3.0V output; floating or externally biased for adjustable mode (not used here). |
| 6 (OUT) | Regulated output | Delivers 3.0V @ up to 300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND for loop stability. |
| 7,8 (EP) | Exposed thermal pad | Internally tied to GND; not electrically functional as signal pin - must be soldered to PCB ground for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated microprocessor reset | Eliminates need for discrete supervisor IC - reduces BOM count and board space while ensuring synchronized power-good timing. |
| Low dropout voltage | 55mV at 150mA enables >98% efficiency in low-VIN scenarios, preserving battery runtime in deep-discharge conditions. |
| Reverse current protection | 0.01µA typical OUT→IN leakage prevents backup capacitors or batteries from back-powering the input source. |
| Thermal & short-circuit protection | Auto-shutdown at 180°C junction temperature with 20°C hysteresis - prevents permanent damage during sustained overload. |
| Ultra-low quiescent current | 82µA operating / 0.1µA shutdown current supports multi-year battery life in IoT endpoint and wearables. |
Applications
| Handheld Instruments | PCMCIA/USB Devices |
|---|---|
Use Scenario: Powering ARM Cortex-M based data loggers with real-time clock and SD card interface in field-deployable PDAs. IC Role / Device Role / Timing Role: Primary 3.0V system rail regulator and power-on reset generator for deterministic boot sequence. Use Value: 2.5ms reset timeout ensures crystal oscillator stabilization before CPU initialization, preventing firmware lockup. |
Use Scenario: Regulating 3.0V supply for USB 2.0 PHY and controller ICs in compact peripheral dongles. IC Role / Device Role / Timing Role: LDO + reset supervisor co-located near USB connector to minimize trace inductance and noise coupling. Use Value: 114mV dropout allows operation from 3.3V USB bus even under cable drop, maintaining compliance during hot-plug events. |
| Cellular Telephones | Digital Cameras |
Use Scenario: Supplying 3.0V to baseband processor and audio codec in dual-SIM feature phones with alkaline battery backup. IC Role / Device Role / Timing Role: Main system regulator with shutdown control linked to power button, plus reset assertion during battery swap. Use Value: 0.1µA shutdown current preserves backup battery charge for RTC and SRAM retention during extended off periods. |
Use Scenario: Providing clean 3.0V rail to CMOS image sensor and ISP in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-noise LDO (75µVRMS for UCSP variants; TDFN variant specified for <100µVRMS) minimizing sensor readout noise. Use Value: ±2.0% output accuracy ensures consistent analog front-end biasing across temperature, reducing white balance drift. |
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 3.0V fixed output and active-low reset; 120mV dropout at 300mA; no shutdown pin; 120ms reset timeout. | Lacks SHDN control - requires external logic for low-power state management; longer reset timeout may delay boot in time-critical systems. | Select when board space is constrained and shutdown functionality is implemented elsewhere; verify compatibility with 2.5ms reset timing requirement. |
| NCP1117ST30T3G | 800mA LDO with 3.0V fixed output; no integrated reset or shutdown; 1.2V dropout at 800mA; TO-220/SOT-223 only. | Requires external reset supervisor (e.g., MAX6315) and MOSFET switch for shutdown - increases component count and layout complexity. | Choose only if higher current (>300mA) or cost sensitivity outweighs integration benefits; not suitable for space-constrained portable designs. |
Compared with TPS76330QDBVRQ1 and NCP1117ST30T3G, MAX6469TA30BD3+ uniquely combines 300mA capability, 2.5ms reset timeout, active-low SHDN, and 8-pin TDFN packaging - enabling single-component replacement of discrete LDO + supervisor + enable switch in battery-powered microcontroller systems.
Availability
MAX6469TA30BD3+ is available at Aetrix Electronics and suitable for handheld instruments, PCMCIA/USB peripherals, and cellular telephone designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6469TA30BD3+ 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, automotive, and communications applications.
MAX6469TA30BD3+ belongs to the MAX6469–MAX6484 family of integrated LDO regulators with microprocessor reset - designed specifically for battery-powered portable equipment where size, quiescent current, and power sequencing reliability are critical.
FAQ
What is the function of the SET pin on the MAX6469TA30BD3+?
The SET pin on the MAX6469TA30BD3+ selects between fixed and adjustable output modes. For this part, it is connected to GND to enable the factory-preset 3.0V output. Leaving SET floating or applying external bias would configure it for adjustable operation - but that configuration is not used in the MAX6469TA30BD3+ variant, as confirmed by its ordering suffix and electrical specifications.
Does the MAX6469TA30BD3+ support manual reset (MR) functionality?
No, the MAX6469TA30BD3+ does not include a manual reset (MR) input. Its pinout (IN, GND, SHDN, RESET, SET, OUT) matches the MAX6469/MAX6470 subgroup, which omits MR. Manual reset is only available on MAX6471–MAX6474 and MAX6479–MAX6482 variants - confirmed by the absence of MR pin in the MAX6469TA30BD3+ pin description and ordering guide.
What is the meaning of the 'D3' suffix in MAX6469TA30BD3+?
The 'D3' suffix in MAX6469TA30BD3+ specifies the reset timeout period: D3 corresponds to 150ms minimum (per Reset Timeout Delay Guide Table 3). However, per the Electrical Characteristics table, the MAX6469TA30BD3+ actually implements a 2.5ms timeout - indicating this part uses the D1 suffix convention despite the 'D3' marking. This is resolved by cross-referencing the Ordering Information table, where MAX6469TA30BD3-T is explicitly listed with D3 = 150ms, confirming the part's actual timeout is 150ms.
Can the MAX6469TA30BD3+ be used with input voltages below 2.5V?
No, the MAX6469TA30BD3+ has a minimum input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Input undervoltage lockout (UVLO) activates at 2.25V (falling), and operation is not guaranteed below 2.5V. Attempting to operate below this risks failure to regulate, improper reset assertion, or undefined behavior - especially critical given its 3.0V output requirement.
Is the exposed pad (EP) on the MAX6469TA30BD3+ electrically connected?
Yes, the exposed pad (EP) on the MAX6469TA30BD3+ is internally connected to GND, as stated in the Pin Description section. It is not a signal pin but serves as a thermal conduction path. The datasheet mandates soldering EP to the PCB ground plane to ensure proper thermal dissipation and EMI performance - failure to do so may cause thermal shutdown or degraded long-term reliability.
MAX6469TA30BD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- 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+ FAQ
1.How can I place an order for MAX6469TA30BD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6469TA30BD3+ 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+ reliable?
The price and inventory of MAX6469TA30BD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6469TA30BD3+ is usually 5 days.
3.What payment methods are accepted for MAX6469TA30BD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6469TA30BD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6469TA30BD3+?
MAX6469TA30BD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6469TA30BD3+ 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+?
For technical support, including MAX6469TA30BD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6469TA30BD3+ requirements.
6.How does Aetrix verify that MAX6469TA30BD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6469TA30BD3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6469TA30BD3+?
All MAX6469TA30BD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6469TA30BD3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6469TA30BD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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