My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6470TA33AD3+T
- Part No.:
- MAX6470TA33AD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6470TA33AD3+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,984
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6470TA33AD3+T from Maxim Integrated is a 300mA, 3.3V fixed-output low-dropout linear regulator with integrated microprocessor reset circuit, 82µA quiescent current, -12.5% reset threshold, and 150ms minimum reset timeout - designed for battery-powered portable equipment requiring stable supply and reliable power-on reset.
For engineers reviewing the MAX6470TA33AD3+T datasheet, MAX6470TA33AD3+T pinout, MAX6470TA33AD3+T application, or MAX6470TA33AD3+T equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options for embedded power management design.
Technical Context
The MAX6470TA33AD3+T integrates an LDO regulator core with ±2.0% output voltage accuracy over -40°C to +85°C and a dedicated reset supervisor using the same internal reference. Its shutdown input (SHDN) reduces supply current to 0.1µA (typ), enabling ultra-low-power sleep modes in portable systems.
It features a push-pull active-low RESET output with 150ms timeout, -12.5% VOUT reset threshold tolerance, and 114mV dropout at 300mA load - optimized for 3.3V logic rails supplied from single-cell Li-ion or 3-cell alkaline sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2.0% over full temperature range - ensures compatibility with 3.3V microcontrollers and peripherals without external feedback. |
| Max Output Current | 300mA guaranteed - sufficient to power baseband processors, RF transceivers, or sensor subsystems in handheld devices. |
| Dropout Voltage | 114mV at 300mA - enables operation down to VIN = 3.414V, supporting single-cell Li-ion (3.0–4.2V) or 3×alkaline (3.2–4.5V) inputs. |
| Quiescent Current | 82µA typical - minimizes battery drain during active operation; drops to 0.1µA in shutdown mode. |
| Reset Threshold | -12.5% of nominal VOUT (i.e., 2.8875V for 3.3V output) - provides conservative brownout detection aligned with µP supply tolerance requirements. |
| Reset Timeout | 150ms minimum - satisfies boot-time stabilization requirements for clock oscillators and memory initialization before processor release. |
| Input Voltage Range | 2.5V to 5.5V - accommodates wide battery chemistries and upstream DC-DC stages without external regulation. |
Pinout & Package
MAX6470TA33AD3+T is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad. The EP is internally connected to GND and must be soldered to PCB ground plane for thermal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.5–5.5V supply; requires 0.1µF bypass capacitor to GND for stability. |
| 2 (GND) | Ground / thermal sink | Primary electrical return and thermal conduction path; must connect to large copper area. |
| 3 (SHDN) | Active-low shutdown control | Pulling low disables regulator and reduces IQ to 0.1µA; connect to VIN for normal operation. |
| 4 (RESET) | Active-low push-pull reset output | Asserts low during power-up, brownout, or SHDN activation; remains low for ≥150ms after recovery. |
| 5 (SET) | Feedback select input | Connected to GND to enable fixed 3.3V output; left floating or pulled high disables regulator. |
| 6 (OUT) | Regulated output | Delivers up to 300mA at 3.3V; requires ≥3.3µF low-ESR ceramic capacitor to GND. |
| EP | Exposed thermal pad | Internally tied to GND; mandatory connection to PCB ground plane for thermal performance and reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated µP reset supervisor | Eliminates need for discrete supervisor IC; uses shared reference for tight tracking between VOUT and reset threshold. |
| Low dropout at full load | 114mV at 300mA enables >96% efficiency at 3.3V output from 3.45V input - critical for battery runtime extension. |
| Ultra-low quiescent current | 82µA operating / 0.1µA shutdown - extends shelf life and standby time in always-on portable instruments. |
| Reverse current protection | 0.01µA typ OUT-to-IN leakage prevents backfeeding when external voltage appears at OUT (e.g., backup cap). |
| Thermal & short-circuit protection | Auto-shutdown at 180°C junction temp with 20°C hysteresis; 450mA current limit protects against sustained overload. |
Applications
| Handheld Instruments | PCMCIA/USB Devices |
|---|---|
|
Use Scenario: Powering ARM-based PDA mainboard with real-time clock, touchscreen controller, and NAND flash. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying µP core and peripherals; RESET ensures deterministic boot after battery insertion or wake-from-sleep. Use Value: 114mV dropout allows uninterrupted operation until battery reaches 3.414V; 150ms reset hold-off guarantees oscillator stabilization before CPU release. |
Use Scenario: Compact USB audio interface requiring clean 3.3V for DAC, USB PHY, and FPGA configuration. IC Role / Device Role / Timing Role: Single-chip power + reset solution replacing dual-component layout; SHDN enables host-controlled power gating. Use Value: 82µA IQ minimizes parasitic drain during USB suspend; push-pull RESET drives FPGA PROG_B directly without pull-up resistor. |
| Cellular Telephones | Digital Cameras |
|
Use Scenario: Baseband power rail in GSM/GPRS feature phone with RF front-end and PMIC sequencing. IC Role / Device Role / Timing Role: Secondary 3.3V regulator for modem subsystem; RESET synchronizes with PMIC power-good signals. Use Value: -12.5% reset threshold provides margin against transient droop during RF transmit bursts; TDFN package saves board space in slim form factor. |
Use Scenario: Image sensor and ISP power in compact point-and-shoot camera with lithium coin-cell backup. IC Role / Device Role / Timing Role: Main 3.3V supply with reverse-current blocking; RESET asserts when main battery is removed to trigger backup mode. Use Value: 0.01µA OUT-to-IN leakage preserves backup capacitor charge; SHDN allows firmware-controlled shutdown during lens retraction. |
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 fixed, 120mV dropout @300mA, 85µA IQ, open-drain RESET, 200ms timeout | Lacks SHDN pin; RESET is open-drain only - requires external pull-up for µP interface | Choose when system already includes pull-up on RESET line and shutdown is managed externally. |
| NCP1117ST33T3G | 1A, 3.3V fixed, 1.2V dropout @800mA, 6mA IQ, no integrated reset or shutdown | Higher current but no reset function - requires separate supervisor (e.g., MCP102) and external enable logic | Choose only if higher output current is mandatory and board area permits discrete reset IC + enable circuitry. |
Compared with TPS76333QDBVRQ1 and NCP1117ST33T3G, MAX6470TA33AD3+T uniquely combines 300mA capability, 82µA quiescent current, active-low push-pull RESET, and SHDN in a single 3×3mm TDFN - reducing BOM count and PCB footprint while enabling lowest-system-power sleep states.
Availability
MAX6470TA33AD3+T is available at Aetrix Electronics and suitable for handheld instruments, PCMCIA/USB devices, and cellular telephones requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6470TA33AD3+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 portable applications.
MAX6470TA33AD3+T belongs to the MAX6469–MAX6484 family of ultra-low-IQ LDOs with integrated reset - engineered specifically for battery-powered portable equipment where runtime, reliability, and board space are critical constraints.
FAQ
What is the exact reset timeout period for MAX6470TA33AD3+T?
The MAX6470TA33AD3+T has a 150ms minimum reset timeout period, as indicated by the "D3" suffix in its part number. This value is guaranteed across -40°C to +85°C and ensures sufficient hold-off time for microprocessor clock stabilization and memory initialization before release from reset.
Does MAX6470TA33AD3+T support adjustable output voltage?
No, MAX6470TA33AD3+T is configured for fixed 3.3V output. Its SET pin must be connected to GND to enable this preset mode. Unlike variants such as MAX6470UT33AD3+T (SOT23), the TA suffix denotes TDFN packaging and does not alter the fixed-output functionality of this specific variant.
What is the maximum input voltage rating for MAX6470TA33AD3+T?
The absolute maximum input voltage for MAX6470TA33AD3+T is +7V, but the recommended operating range is 2.5V to 5.5V per the Electrical Characteristics table. Operation above 5.5V risks exceeding safe power dissipation limits and may trigger thermal shutdown under load.
How does the shutdown function behave in MAX6470TA33AD3+T?
When SHDN is pulled low, MAX6470TA33AD3+T disables the pass transistor, reference, and control circuitry, reducing total supply current to 0.1µA (typ). The RESET output remains asserted low during shutdown and deasserts only after VIN rises above UVLO and VOUT stabilizes above the -12.5% threshold.
Is MAX6470TA33AD3+T compatible with lead-free soldering processes?
Yes, MAX6470TA33AD3+T is offered in RoHS-compliant, lead(Pb)-free packaging. The "+T" suffix explicitly denotes lead-free construction, qualified for JEDEC J-STD-020C reflow profiles with peak temperature up to +260°C - matching standard lead-free assembly requirements.
MAX6470TA33AD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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 (3.3V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.18V @ 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)
MAX6470TA33AD3+T FAQ
1.How can I place an order for MAX6470TA33AD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6470TA33AD3+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 MAX6470TA33AD3+T reliable?
The price and inventory of MAX6470TA33AD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6470TA33AD3+T is usually 5 days.
3.What payment methods are accepted for MAX6470TA33AD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6470TA33AD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6470TA33AD3+T?
MAX6470TA33AD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6470TA33AD3+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 MAX6470TA33AD3+T?
For technical support, including MAX6470TA33AD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6470TA33AD3+T requirements.
6.How does Aetrix verify that MAX6470TA33AD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6470TA33AD3+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 MAX6470TA33AD3+T meets industry standards.
7.What is the process for return or replacement of MAX6470TA33AD3+T?
All MAX6470TA33AD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6470TA33AD3+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 MAX6470TA33AD3+T part is unused and in its original packaging.
Return procedure for MAX6470TA33AD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6470TA33AD3+T Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
