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Analog Devices Inc./Maxim Integrated MAX6469TA15BD3+
- Part No.:
- MAX6469TA15BD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6469TA15BD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,059
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Product details
Overview
The MAX6469TA15BD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, configured for +1.5V fixed output, -7.5% reset threshold accuracy (suffix 'A'), and 150ms minimum reset timeout (suffix 'D3'). It delivers 82µA quiescent current, 55mV dropout at 150mA, and operates across -40°C to +85°C - ideal for battery-powered portable systems requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6469TA15BD3+ datasheet, MAX6469TA15BD3+ pinout, MAX6469TA15BD3+ application, or MAX6469TA15BD3+ equivalent, key selection criteria include its 8-pin TDFN-EP package with exposed pad, active-low push-pull or open-drain RESET output, SHDN-controlled shutdown (0.1µA), and compatibility with microprocessor supply tolerance monitoring in space-constrained handheld and wireless modules.
Technical Context
This device integrates an LDO regulator core and a precision reset supervisor sharing the same reference voltage. The regulator supports fixed +1.5V output via internal feedback and features dual-mode SET pin operation - grounded for preset voltage or externally biased for adjustable outputs up to 5.0V. Its reset circuit asserts when VOUT falls below −7.5% of nominal and holds RESET low for ≥150ms after recovery.
It includes undervoltage lockout (2.25V min), thermal shutdown (180°C), short-circuit and reverse-current protection, and operates from 2.5V to 5.5V input. The SHDN pin enables digital control of regulator enable/disable, reducing supply current to 0.1µA typical while maintaining reset functionality during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.5V fixed - matches low-voltage logic rails (e.g., 1.5V DDR I/O, FPGA core aux supplies) |
| Max Output Current | 300mA guaranteed - sufficient for mid-power microcontrollers and RF transceivers |
| Dropout Voltage | 55mV at 150mA - enables stable regulation even with <2.5V input (e.g., single Li-ion cell under load) |
| Quiescent Current | 82µA - extends battery life in always-on sensor nodes and standby modes |
| Reset Threshold | −7.5% of VOUT (±2.5% accuracy) - ensures robust detection before microprocessor supply violation |
| Reset Timeout | 150ms minimum - satisfies boot-time stabilization requirements for ARM Cortex-M and similar MCUs |
| Shutdown Current | 0.1µA typical - enables true zero-power sleep states in portable equipment |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion, 3.3V/5V system rails, and USB-powered designs |
Pinout & Package
MAX6469TA15BD3+ uses 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 electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Bypass with 0.1µF ceramic capacitor to GND; accepts 2.5–5.5V input |
| 2 (GND) | Ground reference & thermal path | Primary return path; connects to EP for enhanced heat dissipation |
| 3 (SHDN) | Active-low shutdown control | Pull low to disable regulator; reduces IQ to 0.1µA; connect to VIN for normal operation |
| 4 (RESET) | Active-low reset output | Push-pull or open-drain configuration; asserts when VOUT < 1.3875V or during power-up/brownout |
| 5 (SET) | Feedback select input | Grounded for +1.5V fixed output; used with external divider for adjustable mode |
| 6 (OUT) | Regulated output | Delivers +1.5V @ ≤300mA; bypass with ≥3.3µF low-ESR capacitor to GND |
| 7, 8 (NC) | No-connect terminals | Not bonded; left unconnected per datasheet pinout for MAX6469TA variants |
| EP | Exposed thermal pad | Internally tied to GND; must be soldered to large copper area for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated microprocessor reset | Eliminates need for discrete supervisor IC; saves board space and BOM count |
| 150ms reset timeout | Ensures clock oscillators and memory stabilize before processor release - meets ARM/Intel boot timing |
| Low 55mV dropout at 150mA | Enables operation down to ~1.55V input - critical for aging batteries in handheld instruments |
| 0.1µA shutdown current | Supports multi-year battery life in IoT edge sensors with periodic wake/sleep cycles |
| Reverse current protection | 0.01µA OUT-to-IN leakage prevents backup capacitor discharge into depleted battery |
| Thermal shutdown with hysteresis | 180°C trip / 20°C hysteresis enables safe fault recovery without latch-up in compact enclosures |
Applications
| Handheld Instruments | Bluetooth Modules |
|---|---|
Use Scenario: Powering ARM-based PDA mainboard with real-time clock, touchscreen controller, and SD card interface. IC Role / Device Role / Timing Role: Primary 1.5V LDO supplying microcontroller I/O bank and reset supervision during cold start and battery swap. Use Value: 150ms reset hold-off guarantees stable 1.5V rail before CPU initialization, preventing boot failure from transient droop. |
Use Scenario: Regulating 1.5V supply for Bluetooth 5.0 baseband processor and RF front-end biasing in wearable earbuds. IC Role / Device Role / Timing Role: Low-noise, low-IQ power source with synchronized reset assertion during battery insertion or low-VIN events. Use Value: 82µA quiescent current extends talk time; integrated reset avoids external supervisor footprint in 3×3mm module layout. |
| Notebook Subsystem | USB Peripheral Devices |
Use Scenario: Providing 1.5V auxiliary rail for embedded controller (EC) and keyboard backlight driver in ultrabook platform. IC Role / Device Role / Timing Role: Secondary LDO with shutdown control linked to EC power state machine for dynamic power gating. Use Value: SHDN-driven 0.1µA shutdown eliminates leakage during S3/S5 sleep, meeting ACPI power budget targets. |
Use Scenario: Powering 1.5V logic in USB-C dock companion chip handling PD negotiation and display data routing. IC Role / Device Role / Timing Role: Input-tolerant LDO (2.5–5.5V) accepting variable USB bus voltage while delivering clean 1.5V with brownout reset. Use Value: −7.5% reset threshold detects USB voltage sag before host enumeration fails, enabling graceful disconnect handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79915YZTR | 150mA max output, no integrated reset, 1.5V fixed, 2.7–6.5V input range | Requires external reset IC (e.g., TPS3808) for supervisor function | Select when lower cost and smaller footprint outweigh need for integrated reset |
| ADP196ACBZ-1.5-R7 | 300mA output, no reset, 1.5V fixed, 2.5–5.5V input, 100µA IQ | Lacks reset circuitry and shutdown control; requires separate supervisor and enable logic | Choose for high-PSRR noise-sensitive analog subsystems where reset is handled elsewhere |
Compared with TPS79915YZTR and ADP196ACBZ-1.5-R7, the MAX6469TA15BD3+ uniquely combines 300mA drive, integrated −7.5% reset with 150ms timeout, and 0.1µA shutdown in one 8-pin TDFN - eliminating two external components and simplifying power sequencing in space-constrained portable designs.
Availability
MAX6469TA15BD3+ is available at Aetrix Electronics and suitable for handheld instruments, Bluetooth modules, and USB peripheral devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6469TA15BD3+ 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 solutions for industrial, communications, and consumer markets.
The MAX6469–MAX6484 product line was designed specifically for battery-powered portable electronics needing tightly integrated power regulation and microprocessor supervision in minimal footprint - addressing size, efficiency, and reliability constraints in handheld and wireless applications.
FAQ
What is the exact output voltage tolerance of the MAX6469TA15BD3+ over temperature?
The MAX6469TA15BD3+ guarantees ±2.7% output voltage accuracy over the full −40°C to +85°C operating range. At +25°C, the tolerance tightens to ±1.3%. This specification applies specifically to fixed-output operation (SET = GND), and the +1.5V nominal output remains within 1.4595V to 1.5405V across temperature extremes - critical for interfacing with 1.5V I/O standards like LPDDR2.
Does the MAX6469TA15BD3+ support open-drain RESET output?
Yes, the MAX6469TA15BD3+ offers both push-pull and open-drain RESET configurations. The specific variant is determined by ordering suffix - the 'B' in the second position (e.g., MAX6469**T**A15**B**D3+) denotes open-drain RESET. For MAX6469TA15BD3+, RESET is open-drain active-low with 0.4V max VOL at 3.2mA sink, enabling wired-OR reset bus architectures common in multi-rail systems.
Can the MAX6469TA15BD3+ be used with a remote sense configuration?
No - the MAX6469TA15BD3+ does not support remote sensing. Remote feedback (FB pin) is only available on MAX6475/MAX6476/MAX6483/MAX6484 variants. The MAX6469TA15BD3+ uses the SET pin for fixed/adjustable mode selection and lacks an FB terminal. For remote sense applications requiring voltage regulation at point-of-load, consider MAX6475TA15BD3+ instead.
What is the minimum input voltage required for the MAX6469TA15BD3+ to regulate +1.5V output?
The MAX6469TA15BD3+ requires a minimum input voltage of 1.555V to maintain regulation at 150mA load (55mV dropout), and 1.614V at 300mA (114mV dropout). However, the device incorporates undervoltage lockout (UVLO) that disables regulation if VIN falls below 2.25V (min). Therefore, functional operation begins at VIN ≥ 2.25V, ensuring stable startup and preventing erratic behavior near dropout.
Is the exposed pad (EP) on the MAX6469TA15BD3+ electrically connected?
Yes - the exposed pad (EP) on the MAX6469TA15BD3+ is internally connected to GND and must be soldered to the PCB ground plane. It serves dual roles: providing a low-thermal-resistance path (24.4mW/°C derating above +70°C) and establishing a solid ground reference. Leaving EP unconnected degrades thermal performance and may cause instability or premature thermal shutdown under load.
MAX6469TA15BD3+ 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 (1.5V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- -
- 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)
MAX6469TA15BD3+ FAQ
1.How can I place an order for MAX6469TA15BD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6469TA15BD3+ 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 MAX6469TA15BD3+ reliable?
The price and inventory of MAX6469TA15BD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6469TA15BD3+ is usually 5 days.
3.What payment methods are accepted for MAX6469TA15BD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6469TA15BD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6469TA15BD3+?
MAX6469TA15BD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6469TA15BD3+ 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 MAX6469TA15BD3+?
For technical support, including MAX6469TA15BD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6469TA15BD3+ requirements.
6.How does Aetrix verify that MAX6469TA15BD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6469TA15BD3+ 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 MAX6469TA15BD3+ meets industry standards.
7.What is the process for return or replacement of MAX6469TA15BD3+?
All MAX6469TA15BD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6469TA15BD3+, 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 MAX6469TA15BD3+ part is unused and in its original packaging.
Return procedure for MAX6469TA15BD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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