Analog Devices Inc./Maxim Integrated MAX6482BL18BD3

Overview

MAX6482BL18BD3 from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, preset 1.8V output, -12.5% reset threshold, and 150ms minimum reset timeout. It delivers ±2.5% output accuracy over -40°C to +85°C, consumes only 82µA quiescent current, and features manual reset input (MR) for system-level reset initiation during valid supply conditions. Used in battery-powered digital cameras and Bluetooth modules.

For engineers reviewing the MAX6482BL18BD3 datasheet, MAX6482BL18BD3 pinout, MAX6482BL18BD3 application, or MAX6482BL18BD3 equivalent, this page provides verified electrical parameters, UCSP package layout, MR/RESET timing behavior, dropout voltage at 300mA load, and real-world selection guidance against comparable LDO+reset ICs.

Technical Context

The MAX6482BL18BD3 implements a dual-path regulation architecture: its LDO core uses an internal reference and feedback loop to maintain 1.8V output across 2.5V–5.5V input range, while its independent reset supervisor monitors VOUT directly using the same reference. The device integrates a 40kΩ internal pullup on MR and asserts RESET low both on VOUT undervoltage and MR assertion.

Its UCSP package enables compact placement in space-constrained portable designs; thermal shutdown activates at +180°C with 20°C hysteresis, and reverse current protection limits OUT-to-IN leakage to 0.01µA typical when VOUT > VIN. Shutdown current drops to 0.1µA when SHDN is pulled low.

Key Specifications

Pinout & Package

MAX6482BL18BD3 is housed in a 3 × 3 mm UCSP (Ultra-Compact Silicon Package) with 6 active bumps and exposed paddle (EP) internally connected to GND. The package requires JEDEC J-STD-020A-compliant reflow profile and prohibits hand/wave soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO-with-reset applications.

Compared with TPS79918YZTT and ADP196ACBZ-1.8-R7, MAX6482BL18BD3 uniquely combines 300mA drive, MR input, -12.5% precision reset threshold, and 82µA IQ in a UCSP package - making it optimal for battery-powered systems requiring autonomous reset initiation and minimal board area.

Availability

MAX6482BL18BD3 is available at Aetrix Electronics and suitable for digital camera power management, Bluetooth module core supply, and handheld instrument microcontroller supply requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6482BL18BD3 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 management, sensing, and connectivity applications.

The MAX6469–MAX6484 product line was engineered specifically for space- and power-constrained portable electronics requiring integrated voltage regulation and microprocessor supervision in a single chip.

FAQ

What is the exact reset timeout period for MAX6482BL18BD3?

The MAX6482BL18BD3 has a minimum reset timeout period of 150ms, as indicated by the "D3" suffix in its part number. This value is guaranteed over -40°C to +85°C and ensures sufficient time for microprocessor clocks and memory to stabilize before releasing reset. The actual timeout may extend up to 300ms under worst-case conditions per datasheet Table 3.

Does MAX6482BL18BD3 support adjustable output voltage?

No, MAX6482BL18BD3 does not support adjustable output voltage. It is a fixed 1.8V output device. Adjustable operation is only available on MAX6469–MAX6472 and MAX6477–MAX6480 variants that include the SET pin; MAX6482BL18BD3 belongs to the MR-enabled group (MAX6473–MAX6474/MAX6481–MAX6482) and uses MR instead of SET.

What package type is used for MAX6482BL18BD3 and what assembly constraints apply?

MAX6482BL18BD3 uses a 3 × 3 mm UCSP package with 6 active bumps and exposed thermal paddle. It requires JEDEC J-STD-020A-compliant infrared or convection reflow only - hand soldering and wave soldering are prohibited due to thermal sensitivity. Preheating is mandatory, and peak reflow temperature must not exceed +235°C.

How does the manual reset (MR) function interact with the power-on reset behavior of MAX6482BL18BD3?

The MR input operates independently of power-on reset: asserting MR low forces RESET low regardless of VOUT status, and RESET remains low for the full 150ms timeout after MR returns high. During power-up, RESET is also asserted until VOUT reaches 1.575V (–12.5% of 1.8V) and remains asserted for 150ms thereafter - ensuring deterministic reset sequencing whether triggered by power or user action.

What is the maximum input voltage rating for MAX6482BL18BD3 and what protection features prevent damage during overvoltage events?

MAX6482BL18BD3 has an absolute maximum input voltage rating of +7V. It includes input undervoltage lockout (UVLO) triggering at 2.25V (falling), thermal shutdown at +180°C with 20°C hysteresis, short-circuit current limiting (450mA min), and reverse current protection limiting OUT-to-IN leakage to 0.01µA typical - collectively preventing damage during battery insertion errors, thermal overload, or output short circuits.