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Analog Devices Inc./Maxim Integrated MAX6470TA15BD3+T
- Part No.:
- MAX6470TA15BD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6470TA15BD3+T.pdf
- Description:
- IC REG LDO 1.5V/ADJ 0.3A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,825
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Product details
Overview
MAX6470TA15BD3+T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed +1.5V output, -12.5% reset threshold accuracy, 150ms minimum reset timeout, and active-low push-pull RESET output. It operates from 2.5V to 5.5V input, delivers ±2.0% output voltage accuracy over temperature, and consumes only 82µA quiescent current - ideal for battery-powered portable electronics requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6470TA15BD3+T datasheet, MAX6470TA15BD3+T pinout, MAX6470TA15BD3+T application, or MAX6470TA15BD3+T equivalent, this device serves as a single-chip solution combining precision LDO regulation, undervoltage lockout (2.25V), thermal/short-circuit protection, shutdown control (0.1µA), and deterministic reset timing - critical for handheld instruments, Bluetooth modules, and USB peripherals where supply stability and system initialization integrity are non-negotiable.
Technical Context
The MAX6470TA15BD3+T implements a fully integrated LDO core with a PMOS pass transistor enabling 55mV dropout at 150mA and 114mV at 300mA, paired with a precision bandgap reference shared between regulation and reset functions. Its reset supervisor monitors VOUT directly using a -12.5% threshold (i.e., asserts when output falls below 1.3125V for a 1.5V nominal output) and guarantees a minimum 150ms timeout after recovery.
This variant belongs to the MAX6469–MAX6484 family's TDFN-EP 8-pin package group and includes active-low SHDN for ultra-low-power shutdown (0.1µA typ), reverse current protection (0.01µA OUT→IN leakage), and thermal shutdown at +180°C with 20°C hysteresis - all specified across -40°C to +85°C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.5V fixed, ±2.0% accuracy over -40°C to +85°C - ensures stable core logic supply for 1.5V I/O domains. |
| Max Output Current | 300mA guaranteed - sufficient to power microcontrollers, RF transceivers, and sensor interfaces in portable systems. |
| Dropout Voltage | 114mV at 300mA load - enables operation from single-cell Li-ion (3.0V min) or triple-alkaline (4.5V min) sources with margin. |
| Supply Current | 82µA typical operating, 0.1µA in shutdown - extends battery life in sleep-mode applications like PDAs and wireless modules. |
| Reset Threshold | -12.5% of VOUT (1.3125V), with 150ms minimum timeout - meets MIL-STD-704 and JEDEC JESD8-12B brownout recovery requirements. |
| Input Voltage Range | 2.5V to 5.5V - supports wide-input battery chemistries and USB-powered designs without external pre-regulation. |
| Protection Features | Thermal shutdown (+180°C), short-circuit current limit (450mA min), reverse current blocking (0.01µA), and UVLO (2.25V) - eliminates need for discrete protection circuitry. |
Pinout & Package
MAX6470TA15BD3+T is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed paddle thermally connected to GND. The EP pad must be soldered to a PCB ground plane for optimal thermal dissipation (θJA = 41°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.5V–5.5V supply; requires 0.1µF bypass capacitor to GND for stability. |
| 2 (GND) | Power and thermal ground | Primary return path and heatsink; must connect to large copper area or ground plane. |
| 3 (SHDN) | Active-low shutdown control | Pull low to disable regulator and reduce supply current to 0.1µA; internal pullup not present. |
| 4 (RESET) | Active-low push-pull reset output | Drives µP reset pin directly; asserts low during power-up, brownout, or SHDN activation. |
| 5 (SET) | Feedback reference input | Connected to GND for fixed 1.5V output; open or floating not allowed. |
| 6 (OUT) | Regulated output | Delivers 1.5V @ up to 300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND. |
| 7,8 (EP) | Exposed thermal paddle | Internally tied to GND; mandatory connection to PCB ground plane for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated microprocessor reset | Eliminates external supervisor IC; provides deterministic 150ms reset hold time after VOUT recovery. |
| Low-quiescent-current shutdown | Reduces total system standby current to 0.1µA - critical for multi-year battery life in IoT sensors. |
| Reverse current blocking | 0.01µA max OUT→IN leakage prevents backup capacitor or battery discharge into inactive input rail. |
| Thermal and short-circuit protection | Auto-recovering shutdown at +180°C and 450mA current limit prevent damage during fault conditions. |
| Ultra-low output noise | 75µVRMS (10Hz–100kHz) - suitable for noise-sensitive analog circuits and RF front-ends. |
Applications
| Handheld Instruments | USB Peripheral Devices |
|---|---|
|
Use Scenario: Powering ARM Cortex-M0+ MCU and capacitive touchscreen controller in a ruggedized PDA. IC Role / Device Role / Timing Role: Primary 1.5V core supply with synchronized reset assertion before clock stabilization and firmware execution. Use Value: Guarantees processor enters known state only after VOUT reaches 1.425V and remains stable for ≥150ms - preventing boot failures in cold-temperature field use. |
Use Scenario: Regulating 1.5V supply for USB 2.0 PHY and EEPROM in a bus-powered dongle. IC Role / Device Role / Timing Role: LDO + reset generator ensuring clean enumeration sequence when host port powers up. Use Value: 2.25V UVLO prevents erratic behavior during USB hot-plug transients; 150ms reset timeout satisfies USB 2.0 suspend/resume timing budgets. |
| Bluetooth Audio Modules | Digital Camera Sensor Subsystem |
|
Use Scenario: Supplying 1.5V to BLE SoC (e.g., nRF52832) and MEMS microphone in hearing aid design. IC Role / Device Role / Timing Role: Low-noise, low-IQ regulator with brownout detection to maintain audio stream integrity during battery sag. Use Value: 75µVRMS noise avoids audible artifacts; -12.5% reset threshold triggers graceful firmware save before voltage collapse. |
Use Scenario: Providing 1.5V bias to CMOS image sensor interface logic and ADC reference buffer. IC Role / Device Role / Timing Role: Precision LDO with fast startup (<20µs) and tight load regulation to minimize image noise and banding. Use Value: ±2.0% output accuracy over temperature maintains consistent ADC gain calibration; 0.2% load regulation prevents pixel-level intensity 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 |
|---|---|---|---|
| TPS76315QDBVRQ1 | Fixed 1.5V, 150mA output, 300ms reset timeout, no shutdown pin, SOT-23-5 package. | Limited current drive and no SHDN limits use in high-dynamic-load or ultra-low-power sleep scenarios. | Select when board space is constrained and 150mA suffices; verify reset timing compatibility with target µP. |
| ADP160ACBZ-1.5-R7 | 1.5V, 150mA LDO only - no integrated reset circuit; requires external supervisor (e.g., ADM6315). | Increases BOM count and layout complexity; adds uncertainty in reset timing coordination. | Choose only if existing design already uses ADI ecosystem and reset timing can be externally managed. |
Compared with TPS76315QDBVRQ1 and ADP160ACBZ-1.5-R7, MAX6470TA15BD3+T uniquely combines 300mA drive, 0.1µA shutdown, and factory-programmed 150ms reset in a single 8-pin TDFN - reducing component count, improving power-up reliability, and simplifying compliance testing for portable medical and industrial devices.
Availability
MAX6470TA15BD3+T is available at Aetrix Electronics and suitable for handheld instruments, USB peripheral devices, Bluetooth audio modules, and digital camera subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6470TA15BD3+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, automotive, and communications applications.
The MAX6469–MAX6484 product line was engineered specifically for battery-powered portable equipment needing integrated power regulation and deterministic reset functionality - eliminating discrete supervisors and reducing PCB footprint without compromising reliability.
FAQ
What is the exact reset timeout duration for MAX6470TA15BD3+T?
The MAX6470TA15BD3+T features a factory-programmed reset timeout of 150ms (minimum), as indicated by the 'D3' suffix in its part number. This value is guaranteed over -40°C to +85°C and ensures the RESET signal remains asserted for at least 150ms after VOUT recovers above the -12.5% threshold (1.3125V), satisfying JEDEC JESD8-12B requirements for microprocessor initialization.
Does MAX6470TA15BD3+T support adjustable output voltage?
No, MAX6470TA15BD3+T is configured for fixed +1.5V output only. Its SET pin must be connected to GND per datasheet requirements; leaving it floating or applying external resistors will result in undefined regulation. Adjustable output capability is exclusive to variants like MAX6469UT15BD3+T (SOT23-6) or MAX6477TA15BD3+T (UCSP), which share the same family architecture but different pinouts and internal feedback routing.
What is the maximum allowable input voltage for MAX6470TA15BD3+T?
The absolute maximum input voltage for MAX6470TA15BD3+T is +7V, but the recommended operating range is 2.5V to 5.5V. Exceeding 5.5V risks violating the device's safe operating area, especially under high load or elevated temperature. Input voltages above 5.5V require external clamping or pre-regulation to ensure long-term reliability and avoid overstress of the internal PMOS pass transistor.
How does the shutdown function behave on MAX6470TA15BD3+T?
MAX6470TA15BD3+T features an active-low SHDN pin (Pin 3). When pulled low, it disables the LDO pass transistor, reference, and control circuitry, reducing total supply current to 0.1µA (typical). During shutdown, RESET is asserted low, and OUT is unregulated. To resume operation, SHDN must be driven high (≥0.7×VIN); the device then initiates a 20µs startup response before VOUT reaches regulation.
Can MAX6470TA15BD3+T be used with ceramic output capacitors?
Yes, MAX6470TA15BD3+T is optimized for ceramic output capacitors. The datasheet specifies a minimum 3.3µF low-ESR ceramic capacitor on the OUT pin (Pin 6), and stability is guaranteed across the ESR range of 5mΩ to 300mΩ. Using X5R or X7R dielectrics with appropriate voltage rating (≥6.3V) ensures robust transient response and avoids oscillation - confirmed in Typical Operating Characteristics Figure toc06.
MAX6470TA15BD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- 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 (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-EP (3x3)
MAX6470TA15BD3+T FAQ
1.How can I place an order for MAX6470TA15BD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6470TA15BD3+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 MAX6470TA15BD3+T reliable?
The price and inventory of MAX6470TA15BD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6470TA15BD3+T is usually 5 days.
3.What payment methods are accepted for MAX6470TA15BD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6470TA15BD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6470TA15BD3+T?
MAX6470TA15BD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6470TA15BD3+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 MAX6470TA15BD3+T?
For technical support, including MAX6470TA15BD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6470TA15BD3+T requirements.
6.How does Aetrix verify that MAX6470TA15BD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6470TA15BD3+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 MAX6470TA15BD3+T meets industry standards.
7.What is the process for return or replacement of MAX6470TA15BD3+T?
All MAX6470TA15BD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6470TA15BD3+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 MAX6470TA15BD3+T part is unused and in its original packaging.
Return procedure for MAX6470TA15BD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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