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Analog Devices Inc./Maxim Integrated MAX6481BL30BD4-T
- Part No.:
- MAX6481BL30BD4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-UFBGA, CSPBGA
- Datasheet:
-
MAX6481BL30BD4-T.pdf
- Description:
- IC REG LINEAR 6UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6481BL30BD4-T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, delivering a precise 3.0V output voltage, ±2.5% accuracy over -40°C to +85°C, and a 12.5% reset threshold with 1200ms (min) timeout. It features 82µA quiescent current, 114mV dropout at 300mA load, and active-low push-pull RESET output - designed for battery-powered portable systems requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6481BL30BD4-T datasheet, MAX6481BL30BD4-T pinout, MAX6481BL30BD4-T application, or MAX6481BL30BD4-T equivalent, key selection criteria include fixed 3.0V output, 12.5% reset tolerance, UCSP package compatibility, shutdown functionality, and integration of reset supervision without external components.
Technical Context
The MAX6481BL30BD4-T implements a fully integrated LDO regulator core with internal feedback resistors set for 3.0V output and a precision reset supervisor sharing the same reference. Its reset circuit asserts active-low RESET when VOUT falls below 87.5% of nominal (i.e., 2.625V), holding assertion for ≥1200ms after recovery - eliminating need for discrete supervisors in µP-based power domains.
This device belongs to the MAX6477–MAX6484 subfamily, packaged in a 3×3mm UCSP™ chip-scale package with exposed die pad, supporting thermal dissipation up to 840mW at +70°C ambient. It includes shutdown control (SHDN), reverse current protection (<0.01µA OUT→IN leakage), and operates across 2.5V–5.5V input range with guaranteed 300mA output current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.5% over -40°C to +85°C - ensures stable supply for 3.3V-tolerant logic and memory interfaces. |
| Reset Threshold | -12.5% of VOUT (2.625V) - triggers reset before microprocessor supply violation per JEDEC JESD8-12A spec. |
| Reset Timeout | 1200ms minimum - provides sufficient hold time for system initialization and clock stabilization. |
| Dropout Voltage | 114mV at 300mA load - enables operation down to VIN = 3.114V, critical for single-cell Li-ion or 3-cell alkaline systems. |
| Quiescent Current | 82µA typical - extends battery life in always-on monitoring or sleep-mode applications. |
| Shutdown Current | 0.1µA typical - reduces standby power to negligible levels during deep-sleep or storage modes. |
| Package | 3×3mm UCSP™ (chip-scale) - supports ultra-compact PCB layouts in space-constrained portable devices. |
Pinout & Package
MAX6481BL30BD4-T is housed in a 6-bump UCSP™ (Ultra Compact Silicon Package) with exposed die pad, optimized for thermal performance in handheld and battery-powered designs. Pin assignments follow the MAX6481/MAX6482 UCSP configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Regulator input | Accepts 2.5V–5.5V supply; requires 0.1µF bypass capacitor to GND for stability. |
| GND | Ground / thermal pad | Primary electrical ground and thermal path; must be soldered to large PCB copper area for heat dissipation. |
| SHDN | Active-low shutdown control | Pulling low disables regulator and reduces supply current to 0.1µA; connect to VIN for normal operation. |
| RESET | Active-low push-pull reset output | Asserts low during power-up, brownout, or shutdown; remains low ≥1200ms after VOUT recovery. |
| SET | Feedback select input | Connected to GND to enable fixed 3.0V output; left unconnected or tied to divider for adjustable mode. |
| OUT | Regulated output | Delivers up to 300mA at 3.0V; requires ≥3.3µF low-ESR ceramic capacitor to GND for transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated microprocessor reset | Eliminates external supervisor IC and reduces BOM count while guaranteeing deterministic reset timing. |
| Low 82µA quiescent current | Enables >1-year battery life in coin-cell–powered IoT sensors operating at 10µA average system current. |
| Reverse current protection | 0.01µA max OUT→IN leakage prevents backup capacitor or battery discharge when main supply is removed. |
| Thermal shutdown with hysteresis | 180°C trip point with 20°C hysteresis prevents latch-up and enables safe recovery under sustained overload. |
| UCSP™ package footprint | 3×3mm area (≈9mm²) saves >60% board space vs. SOT23-6, enabling miniaturized PDA and Bluetooth module designs. |
Applications
| Handheld Instruments | PCMCIA/USB Devices |
|---|---|
Use Scenario: Power management in palm-sized multimeters with LCD display, data logging, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Primary 3.0V supply regulator with built-in reset supervision ensuring clean µC boot after battery insertion or wake-from-sleep. Use Value: Eliminates need for separate reset IC and reduces startup delay by synchronizing VOUT stabilization and RESET deassertion. |
Use Scenario: Compact USB-to-serial adapter card requiring regulated 3.0V for UART IC and EEPROM, powered from USB 5V bus. IC Role / Device Role / Timing Role: LDO + supervisor combo providing fault-tolerant 3.0V rail and brownout detection during USB hot-plug events. Use Value: 1200ms reset timeout ensures firmware bootloader completes before host enumeration begins. |
| Cellular Telephones | Digital Cameras |
Use Scenario: Baseband processor auxiliary rail in dual-SIM feature phones with intermittent battery disconnection during SIM swap. IC Role / Device Role / Timing Role: Regulator with reverse-current blocking and SHDN-controlled power gating during SIM change sequence. Use Value: 0.01µA OUT→IN leakage prevents battery drain when main supply is disconnected but backup cap holds VOUT. |
Use Scenario: Image sensor and ISP core supply in compact action cameras with aggressive power cycling between capture bursts. IC Role / Device Role / Timing Role: Fast-starting 3.0V LDO with <20µs startup time and precise reset coordination for sensor initialization. Use Value: 82µA IQ minimizes idle current draw during preview mode, extending recording time per charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6481BL30BD3-T | Same 3.0V output and 12.5% reset threshold, but 150ms reset timeout instead of 1200ms. | Suitable for faster-boot systems where extended reset hold time is unnecessary. | Select only if system firmware initializes in <150ms; MAX6481BL30BD4-T required for full bootloader safety margin. |
| TPS76330QDBVRQ1 | Automotive-grade 3.0V LDO (±2%) with 120ms reset timeout; no shutdown pin; SOT-23-5 package. | Designed for AEC-Q100 automotive modules; lacks SHDN and longer reset timeout. | Use only in automotive environments requiring qualification; not drop-in due to different pinout and missing SHDN. |
Compared with MAX6481BL30BD3-T and TPS76330QDBVRQ1, the MAX6481BL30BD4-T uniquely combines 1200ms reset hold time, active-low SHDN, UCSP packaging, and 0.01µA reverse leakage - making it optimal for space-constrained, battery-backed portable electronics demanding robust power sequencing.
Availability
MAX6481BL30BD4-T 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 RoHS-compliant packaging.
Supply support for MAX6481BL30BD4-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for industrial, communications, and consumer applications.
The MAX6469–MAX6484 product line was engineered specifically for battery-powered portable equipment needing ultra-low IQ, integrated reset supervision, and compact packaging - targeting PDAs, digital cameras, and wireless modules.
FAQ
What is the exact reset threshold voltage for MAX6481BL30BD4-T?
The MAX6481BL30BD4-T has a -12.5% reset threshold, meaning RESET asserts when VOUT drops below 87.5% of its nominal 3.0V output - i.e., 2.625V. This threshold is guaranteed over -40°C to +85°C and is implemented using the same precision bandgap reference as the LDO, ensuring tight correlation between regulation and supervision accuracy.
Does MAX6481BL30BD4-T support adjustable output voltage?
Yes, the MAX6481BL30BD4-T supports adjustable output via the SET pin. When SET is disconnected from GND and connected to an external resistor divider between OUT and GND, the output can be set from 1.25V to 5.0V using VOUT = 1.229V × (1 + R1/R2). However, for fixed 3.0V operation - the default configuration - SET must be tied to GND.
What package type is used for MAX6481BL30BD4-T?
The MAX6481BL30BD4-T uses a 3×3mm UCSP™ (Ultra Compact Silicon Package) with 6 solder bumps and an exposed die pad. This chip-scale package provides superior thermal performance versus SOT23-6 and occupies ~60% less PCB area - confirmed in Maxim's Ordering Information table for MAX6481/MAX6482 UCSP variants.
Can MAX6481BL30BD4-T be used with a backup supercapacitor?
Yes, the MAX6481BL30BD4-T supports backup capacitor operation. Its reverse-current protection limits OUT→IN leakage to 0.01µA, allowing a supercapacitor at OUT to maintain system state when the main battery is removed. RESET remains asserted until IN exceeds OUT and VOUT recovers above 2.625V, enabling controlled low-power retention.
Is there a manual reset input (MR) on MAX6481BL30BD4-T?
No, the MAX6481BL30BD4-T does not include a manual reset (MR) input. It belongs to the MAX6481/MAX6482 subgroup, which uses SHDN for reset initiation - asserting SHDN low forces RESET assertion regardless of VOUT level. MR is only present on MAX6471–MAX6474 and MAX6479–MAX6482 variants, as confirmed in the Pin Description tables.
MAX6481BL30BD4-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-UFBGA, CSPBGA
- 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 (3V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.19V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 136 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Manual Reset, 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:
- 6-UCSP (1.52x1.52)
MAX6481BL30BD4-T FAQ
1.How can I place an order for MAX6481BL30BD4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6481BL30BD4-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 MAX6481BL30BD4-T reliable?
The price and inventory of MAX6481BL30BD4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6481BL30BD4-T is usually 5 days.
3.What payment methods are accepted for MAX6481BL30BD4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6481BL30BD4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6481BL30BD4-T?
MAX6481BL30BD4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6481BL30BD4-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 MAX6481BL30BD4-T?
For technical support, including MAX6481BL30BD4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6481BL30BD4-T requirements.
6.How does Aetrix verify that MAX6481BL30BD4-T is sourced from the original manufacturer or authorized distributors?
All MAX6481BL30BD4-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 MAX6481BL30BD4-T meets industry standards.
7.What is the process for return or replacement of MAX6481BL30BD4-T?
All MAX6481BL30BD4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6481BL30BD4-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 MAX6481BL30BD4-T part is unused and in its original packaging.
Return procedure for MAX6481BL30BD4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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