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Analog Devices Inc./Maxim Integrated MAX6470TA30BD3+
- Part No.:
- MAX6470TA30BD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6470TA30BD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,940
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Product details
Overview
MAX6470TA30BD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 3.0V output, ±2.0% 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 low quiescent current (82µA) and shutdown capability (0.1µA).
For engineers reviewing the MAX6470TA30BD3+ datasheet, MAX6470TA30BD3+ pinout, MAX6470TA30BD3+ application, or MAX6470TA30BD3+ equivalent, this device is selected for portable embedded systems where supply stability, precise reset assertion timing, low-power shutdown, and compact 8-pin TDFN-EP packaging are critical design requirements.
Technical Context
The MAX6470TA30BD3+ integrates a precision LDO regulator core with a dedicated reset supervisor using a shared voltage reference. Its reset circuit asserts an active-low signal when VOUT drops below −7.5% of nominal (2.775V), with guaranteed 2.5ms minimum timeout after recovery. The regulator operates from 2.5V to 5.5V input and maintains regulation down to 55mV dropout at 150mA.
It features active-low shutdown (SHDN) that disables the pass transistor and reference, reducing supply current to 0.1µA typical. Input reverse-current protection limits OUT-to-IN leakage to 0.01µA typical, preventing battery backfeed during input removal - essential for single-cell Li-ion and alkaline applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.0% over full temperature range - ensures stable µP core voltage without external feedback components. |
| Max Output Current | 300mA guaranteed - supports moderate-power microcontrollers, RF transceivers, and sensor subsystems. |
| Dropout Voltage | 114mV at 300mA load - enables operation from 3.114V input, critical for single-cell battery systems near end-of-life. |
| Supply Current | 82µA operating / 0.1µA shutdown - extends battery life in sleep modes by >800× reduction vs active state. |
| Reset Threshold | −7.5% of VOUT (2.775V) - aligns with standard microprocessor supply tolerance, eliminating need for external supervisor IC. |
| Reset Timeout | 2.5ms (min) - provides sufficient stabilization time for clock oscillators and memory before processor release. |
| Input Voltage Range | 2.5V to 5.5V - compatible with Li-ion, Li-polymer, 3-cell alkaline, and USB-powered systems. |
Pinout & Package
MAX6470TA30BD3+ is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed paddle thermally and electrically connected to GND. The EP pad must be soldered to a PCB ground plane for optimal thermal dissipation and EMI performance.
| 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) | Ground reference & thermal path | Primary electrical return and heatsink; must connect to large copper area or ground plane. |
| 3 (SHDN) | Active-low shutdown control | Pull low to disable regulator and reduce IQ to 0.1µA; tie to IN for normal operation. |
| 4 (RESET) | Active-low push-pull reset output | Asserts low during power-up, brownout, or SHDN activation; holds for ≥2.5ms after recovery. |
| 5 (SET) | Feedback configuration input | Connected to GND to select fixed 3.0V output; left unconnected or pulled to GND per datasheet. |
| 6 (OUT) | Regulated output | Delivers 3.0V @ up to 300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND. |
| 7,8 (EP) | Exposed paddle | Internally tied to GND; mandatory solder connection to PCB ground for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reset supervisor | Eliminates external reset IC; monitors VOUT directly with −7.5% threshold and factory-trimmed 2.5ms timeout. |
| Low-quiescent-current shutdown | Reduces total system current to 0.1µA typical, enabling multi-year battery life in always-on IoT endpoints. |
| Reverse current protection | 0.01µA max OUT-to-IN leakage prevents battery discharge when input is removed or disconnected. |
| Thermal & short-circuit protection | Auto-shutdown at 180°C junction temp with 20°C hysteresis; 450mA current limit protects against sustained overload. |
| Wide input voltage range | 2.5V–5.5V operation supports direct connection to single-cell Li-ion (2.7–4.2V) and 3-cell alkaline (3.0–4.5V). |
Applications
| Handheld Instrument Power | USB Peripheral Regulation |
|---|---|
|
Use Scenario: Powering a handheld multimeter with LCD, ADC, and Bluetooth LE radio from a single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: LDO regulator supplies clean 3.0V to µC and analog front-end; RESET ensures µC remains held until VOUT stabilizes post-power-up. Use Value: 114mV dropout allows >300mA delivery down to 3.114V input, extending usable battery range by ~12% versus higher-dropout alternatives. |
Use Scenario: Regulating 5V USB bus to 3.0V for a USB-C audio dongle with DAC and headphone amp. IC Role / Device Role / Timing Role: Provides low-noise, low-ripple 3.0V rail; RESET synchronizes DAC initialization with stable power, preventing pop/click artifacts. Use Value: 82µA quiescent current minimizes standby drain; 2.5ms reset timeout guarantees DAC reference settling before data streaming begins. |
| Notebook Subsystem Supply | Wireless Module Bias |
|
Use Scenario: Powering a fingerprint sensor and secure element in an ultrabook's lid assembly from a shared 3.3V rail. IC Role / Device Role / Timing Role: Isolates sensitive biometric circuitry from main SoC noise; RESET coordinates secure boot sequence with host processor. Use Value: ±2.0% output accuracy ensures sensor ADC reference stability; shutdown mode cuts leakage during lid-close sleep states. |
Use Scenario: Supplying 3.0V to a Bluetooth 5.0 module (e.g., nRF52840) in a wearable tracker with coin-cell backup. IC Role / Device Role / Timing Role: Primary LDO during main battery operation; reverse-current protection prevents backup cell discharge when main power is absent. Use Value: 0.01µA OUT-to-IN leakage preserves coin-cell life; 300mA rating supports peak BLE transmit current without droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0530PDQNR | No integrated reset; 200mA output; 25µA IQ; 170mV dropout at 200mA. | Lacks reset supervision - requires external supervisor (e.g., TPS3809) for µP sequencing. | Select when reset functionality is handled elsewhere and ultra-low IQ dominates design priority. |
| ADP1621ARMZ-3.0-R7 | 300mA output; no reset; 100µA IQ; 120mV dropout at 300mA; includes enable but no reset output. | Requires discrete reset circuit (e.g., ADM6315) for power-on sequencing compliance. | Choose for industrial environments where ADI's AEC-Q200 qualification or extended temp support (+125°C) is required. |
Compared with TPS7A0530PDQNR and ADP1621ARMZ-3.0-R7, MAX6470TA30BD3+ uniquely integrates a factory-trimmed reset function with 2.5ms timeout and −7.5% threshold in the same 8-pin TDFN footprint - eliminating BOM cost, layout area, and timing validation effort for µP-based portable designs.
Availability
MAX6470TA30BD3+ is available at Aetrix Electronics and suitable for handheld instruments, USB peripherals, notebook subsystems, and wireless modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX6470TA30BD3+ 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 high-performance analog and mixed-signal ICs for power management, sensing, and interface applications in portable, industrial, and communications systems.
MAX6470TA30BD3+ belongs to the MAX6469–MAX6484 family of 300mA LDOs with integrated microprocessor reset - engineered specifically for battery-powered portable equipment demanding low IQ, precise reset timing, and robust protection features.
FAQ
What is the reset threshold voltage for MAX6470TA30BD3+?
The MAX6470TA30BD3+ uses a −7.5% reset threshold relative to its nominal 3.0V output, resulting in a trip point of 2.775V. This threshold is factory-trimmed and guaranteed across −40°C to +85°C. The reset output remains asserted until VOUT rises above 2.775V and holds for a minimum 2.5ms timeout period, ensuring reliable microprocessor initialization.
Does MAX6470TA30BD3+ support adjustable output voltage?
No, MAX6470TA30BD3+ is configured for fixed 3.0V output. Its SET pin is internally connected to GND to select the preset voltage; it does not support external resistor-divider adjustment. For adjustable versions, refer to MAX6470UT30BD3+ (SOT23-6) or MAX6477–MAX6484 series with SET pin enabled for external feedback.
What package type is used for MAX6470TA30BD3+?
MAX6470TA30BD3+ is supplied in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed paddle. The EP pad is internally connected to GND and must be soldered to a PCB ground plane for thermal management and electrical performance. This package offers lower thermal resistance (41°C/W) than SOT23-6 alternatives.
How does MAX6470TA30BD3+ behave during input power removal?
When input power is removed, MAX6470TA30BD3+ asserts RESET immediately and maintains low output current (<40µA) from OUT to GND. Its reverse-current protection limits OUT-to-IN leakage to 0.01µA typical, preventing backfeed into a depleted battery. This behavior enables safe use with supercapacitor or backup battery hold-up circuits.
Is MAX6470TA30BD3+ RoHS-compliant and lead-free?
Yes, MAX6470TA30BD3+ is manufactured in a lead(Pb)-free and RoHS-compliant package. The "+" suffix in the part number explicitly denotes compliance with JEDEC J-STD-020D reflow profiles (peak 260°C) and EU RoHS Directive 2011/65/EU. No lead-containing variants are offered for this ordering code.
MAX6470TA30BD3+ 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:
- 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:
- 8-TDFN (3x3)
MAX6470TA30BD3+ FAQ
1.How can I place an order for MAX6470TA30BD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6470TA30BD3+ 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 MAX6470TA30BD3+ reliable?
The price and inventory of MAX6470TA30BD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6470TA30BD3+ is usually 5 days.
3.What payment methods are accepted for MAX6470TA30BD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6470TA30BD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6470TA30BD3+?
MAX6470TA30BD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6470TA30BD3+ 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 MAX6470TA30BD3+?
For technical support, including MAX6470TA30BD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6470TA30BD3+ requirements.
6.How does Aetrix verify that MAX6470TA30BD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6470TA30BD3+ 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 MAX6470TA30BD3+ meets industry standards.
7.What is the process for return or replacement of MAX6470TA30BD3+?
All MAX6470TA30BD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6470TA30BD3+, 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 MAX6470TA30BD3+ part is unused and in its original packaging.
Return procedure for MAX6470TA30BD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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