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Analog Devices Inc./Maxim Integrated MAX6470UT33AD3#C6U
- Part No.:
- MAX6470UT33AD3#C6U
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX6470UT33AD3#C6U.pdf
- Description:
- 300MA, LDO LINEAR REGULATOR WITH
- Quantity:
- Payment:
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Inventory:7,295
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Product details
Overview
MAX6470UT33AD3#C6U from Maxim Integrated is a 300mA, 3.3V fixed-output low-dropout linear regulator with integrated microprocessor reset circuit, 114mV dropout at full load, 82µA quiescent current, and 150ms minimum reset timeout. It operates from 2.5V to 5.5V input and delivers stable power to microprocessors in battery-powered portable systems.
For engineers reviewing the MAX6470UT33AD3#C6U datasheet, MAX6470UT33AD3#C6U pinout, MAX6470UT33AD3#C6U application, or MAX6470UT33AD3#C6U equivalent, this device supports critical power sequencing, brownout detection, and shutdown control in space-constrained handheld instruments and wireless modules where supply current, dropout voltage, and reset timing are design-critical.
Technical Context
The MAX6470UT33AD3#C6U integrates a precision LDO regulator core with a dedicated reset supervisor sharing the same reference. Its reset circuit monitors VOUT against a -7.5% threshold (suffix 'A') and asserts an active-low push-pull RESET for ≥150ms after recovery (suffix 'D3'). The device uses internal feedback for fixed 3.3V output and includes active-low SHDN for 0.1µA shutdown mode.
It features reverse current protection (0.01µA OUT→IN leakage), thermal shutdown at +180°C with 20°C hysteresis, and current limiting at 450mA. The SOT23-6 package enables compact layout while maintaining 727mW max power dissipation at +70°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2.7% over -40°C to +85°C - ensures compatibility with 3.3V logic and memory interfaces without external resistors. |
| Max Output Current | 300mA guaranteed - sufficient to power ARM Cortex-M microcontrollers, RF transceivers, or small FPGA I/O banks. |
| Dropout Voltage | 114mV at 300mA - enables operation down to VIN = 3.414V, supporting single-cell Li-ion or 3× alkaline battery inputs. |
| Quiescent Current | 82µA typical - extends battery life in always-on monitoring circuits such as Bluetooth LE sensors. |
| Reset Threshold | -7.5% of VOUT (i.e., 3.0525V) - meets standard microprocessor supply tolerance requirements for reliable boot initialization. |
| Reset Timeout | 150ms minimum - provides adequate hold-off time for clock oscillator stabilization before processor release. |
| Shutdown Current | 0.1µA typical - reduces system standby power to nanoampere levels during deep sleep modes. |
Pinout & Package
MAX6470UT33AD3#C6U is housed in a 6-pin SOT23-6 package with exposed paddle (EP) internally connected to GND. Thermal performance is optimized by soldering EP to a PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts 2.5V–5.5V input; requires 0.1µF bypass capacitor to GND for stability and noise suppression. |
| 2 GND | Ground / Thermal Pad | Primary return path and thermal conduction path; must be connected to large copper area for heat 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 asserts low during power-up, brownout, or shutdown; holds for ≥150ms after recovery. |
| 5 SET | Feedback Selection Terminal | Connected to GND to enable fixed 3.3V output; floating or externally biased enables adjustable mode (not used here). |
| 6 OUT | Regulated Output | Delivers 3.3V/300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Microprocessor Reset | Eliminates need for external supervisor IC; provides deterministic 150ms reset hold time synchronized to VOUT regulation. |
| Low Dropout Performance | 114mV dropout at 300mA enables use with weak or depleting batteries while maintaining 3.3V rail integrity. |
| Ultra-Low Quiescent Current | 82µA operating current minimizes battery drain in portable devices with intermittent wake cycles. |
| Reverse Current Protection | 0.01µA typical OUT→IN leakage prevents back-powering of source during battery swap or backup scenarios. |
| Thermal & Short-Circuit Protection | Auto-recovering thermal shutdown at +180°C and 450mA current limit ensure robustness under fault conditions. |
Applications
| Handheld Instruments | PCMCIA/USB Devices |
|---|---|
Use Scenario: Power management in palm-sized test meters with LCD, ADC, and BLE radio. IC Role / Device Role / Timing Role: Primary 3.3V supply regulator with integrated reset for controlled MCU boot sequence. Use Value: 82µA quiescent current extends battery life beyond 12 months in low-duty-cycle measurement mode. |
Use Scenario: Compact USB peripheral requiring clean, sequenced power for controller and interface logic. IC Role / Device Role / Timing Role: Regulator and supervisor for VCC rail; RESET ensures USB PHY initializes only after stable 3.3V. Use Value: 150ms reset timeout guarantees crystal oscillator startup before enumeration begins. |
| Cellular Telephones | Digital Cameras |
Use Scenario: Baseband processor power in feature phones with removable battery and manual reset button. IC Role / Device Role / Timing Role: Main LDO with SHDN-controlled sleep mode and MR-compatible reset (though MR not present on MAX6470). Use Value: 0.1µA shutdown current preserves battery charge during storage; -7.5% reset threshold matches GSM baseband voltage specs. |
Use Scenario: Image sensor and ISP core power in compact digital still cameras. IC Role / Device Role / Timing Role: Stable 3.3V rail generator with brownout detection to prevent corrupted frame capture during battery sag. Use Value: 114mV dropout allows operation until battery drops to 3.414V, maximizing usable capacity per charge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333QDBVRQ1 | 300mA, 3.3V LDO with 200ms reset timeout and -10% threshold; 120µA IQ; SOT23-5 (no SET pin) | Lacks adjustable mode and manual reset; automotive-grade (-40°C to +125°C) but no UCSP option | Preferred for AEC-Q100-compliant automotive body electronics where extended temperature range is mandatory. |
| NCP114AMX33T2G | 300mA, 3.3V LDO with 200ms reset, -7.5% threshold, 60µA IQ; SOT23-5; no SHDN pin | No shutdown control; lower quiescent current but fixed pinout excludes enable functionality | Suitable for cost-sensitive consumer wearables where shutdown is managed externally and board space is extremely limited. |
Compared with MAX6470UT33AD3#C6U, TPS76333QDBVRQ1 offers higher temperature rating but longer reset timeout and no SHDN, while NCP114AMX33T2G saves 22µA IQ but sacrifices system-level power control-making MAX6470UT33AD3#C6U optimal for balanced performance in portable industrial tools.
Availability
MAX6470UT33AD3#C6U is available at Aetrix Electronics and suitable for handheld instruments, PCMCIA/USB peripherals, and cellular telephone subsystems requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance.
Supply support for MAX6470UT33AD3#C6U 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 and mixed-signal ICs for power, sensing, and connectivity applications in industrial, medical, and portable systems.
The MAX6469–MAX6484 family was engineered specifically for battery-powered microprocessor systems needing integrated power regulation and reliable reset supervision in minimal footprint.
FAQ
What output voltage does the MAX6470UT33AD3#C6U deliver?
The MAX6470UT33AD3#C6U delivers a fixed 3.3V output with ±2.7% accuracy over -40°C to +85°C. This is set by internal resistor dividers; the SET pin is tied to GND in this variant, disabling adjustable mode. The '33' in the part number explicitly denotes the 3.3V nominal output voltage.
Does the MAX6470UT33AD3#C6U include a manual reset input (MR)?
No, the MAX6470UT33AD3#C6U does not include a manual reset input. Per the family datasheet, MR functionality is only present on MAX6471–MAX6474 and MAX6479–MAX6482 variants. The MAX6470UT33AD3#C6U uses pins IN, GND, SHDN, RESET, SET, and OUT - with no dedicated MR terminal.
What is the reset timeout period for the MAX6470UT33AD3#C6U?
The MAX6470UT33AD3#C6U has a 150ms minimum reset timeout period, indicated by the 'D3' suffix in the part number. This means RESET remains asserted for at least 150ms after VOUT rises above the -7.5% threshold (3.0525V), ensuring sufficient time for clock oscillators and peripherals to stabilize before processor release.
Can the MAX6470UT33AD3#C6U be used with a 2.5V input supply?
Yes, the MAX6470UT33AD3#C6U supports input voltages from 2.5V to 5.5V. However, with a 2.5V input and 3.3V output, regulation is impossible - the device will be in dropout. Minimum functional VIN is VOUT + dropout voltage: 3.3V + 0.114V = 3.414V. Below that, output collapses and RESET asserts.
What package type is used for the MAX6470UT33AD3#C6U?
The MAX6470UT33AD3#C6U uses a 6-pin SOT23-6 package with exposed thermal pad (EP). This is confirmed by the 'UT' prefix in the ordering code (e.g., MAX6470UTxxx), which denotes the SOT23-6 variant per Maxim's Ordering Information table. The EP is internally connected to GND and must be soldered to PCB ground for thermal performance.
MAX6470UT33AD3#C6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6470UT33AD3#C6U FAQ
1.How can I place an order for MAX6470UT33AD3#C6U through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6470UT33AD3#C6U 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 MAX6470UT33AD3#C6U reliable?
The price and inventory of MAX6470UT33AD3#C6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6470UT33AD3#C6U is usually 5 days.
3.What payment methods are accepted for MAX6470UT33AD3#C6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6470UT33AD3#C6U transactions.
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4.How is shipping managed for MAX6470UT33AD3#C6U?
MAX6470UT33AD3#C6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6470UT33AD3#C6U 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 MAX6470UT33AD3#C6U?
For technical support, including MAX6470UT33AD3#C6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6470UT33AD3#C6U requirements.
6.How does Aetrix verify that MAX6470UT33AD3#C6U is sourced from the original manufacturer or authorized distributors?
All MAX6470UT33AD3#C6U 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 MAX6470UT33AD3#C6U meets industry standards.
7.What is the process for return or replacement of MAX6470UT33AD3#C6U?
All MAX6470UT33AD3#C6U units undergo pre-shipment inspection (PSI). If there is an issue with MAX6470UT33AD3#C6U, 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 MAX6470UT33AD3#C6U part is unused and in its original packaging.
Return procedure for MAX6470UT33AD3#C6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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