Analog Devices Inc./Maxim Integrated MAX8530EBTJO-T

Overview

MAX8530EBTJO-T from Maxim Integrated is a dual low-dropout linear regulator IC with integrated microprocessor reset circuit, housed in a 6-bump UCSP (1.16 × 1.57 × 0.6 mm) package. It delivers 200mA on OUT1 and 150mA on OUT2, features 100mV typical dropout at 100mA, 130µA quiescent current, and an open-drain active-low RESET output triggered when OUT1 falls below 87% of nominal voltage - used for reliable power-on sequencing in portable baseband subsystems.

For engineers reviewing the MAX8530EBTJO-T datasheet, MAX8530EBTJO-T pinout, MAX8530EBTJO-T application, or MAX8530EBTJO-T equivalent, key selection criteria include guaranteed dual-output current capability, UCSP footprint constraints, reset timeout timing (≥100ms), dropout behavior under light/heavy load, and thermal shutdown threshold (160°C).

Technical Context

The MAX8530EBTJO-T integrates two independent LDO regulators with P-channel MOSFET pass transistors, enabling ultra-low quiescent current (130µA) independent of load or dropout condition. Its internal 1.25V bandgap reference feeds error amplifiers that regulate both outputs via internal resistor dividers - no external feedback required for fixed-voltage variants like this part (OUT1 = 2.85V, OUT2 = 2.6V per Output Voltage Selector Guide).

Reset functionality is tightly coupled to OUT1 monitoring only, asserting an open-drain low signal for ≥100ms upon undervoltage detection, with hysteresis of 0.5% and leakage <0.01µA at 6.5V. Shutdown control is shared across both regulators via a single logic-input SHDN pin with sub-1nA off-state current.

Key Specifications

Pinout & Package

MAX8530EBTJO-T uses a 6-bump UCSP package (1.16 × 1.57 × 0.6 mm, 3 × 2 grid), optimized for space-constrained portable designs. The die is flip-chip mounted; bumps serve as electrical terminals and mechanical attachment points. Thermal performance relies on solder joint conduction to PCB copper - no exposed pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX8530ETTKO-T, the MAX8530EBTJO-T trades thermal headroom for ultra-compact size - ideal for space-limited modules where peak power is <300mW. Versus TPS70245PWPR, it delivers self-contained reset timing without external components but lacks independent enable control.

Availability

MAX8530EBTJO-T is available at Aetrix Electronics and suitable for cellular handset design, portable instrumentation, and digital camera power management requiring stable component supply, long-term lifecycle support, and lead-free-compliant sourcing.

Supply support for MAX8530EBTJO-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 and mixed-signal ICs for power management, sensing, and communications.

The MAX8530/MAX8531 product line was designed specifically for space- and power-constrained portable electronics, delivering dual regulated outputs with integrated supervision in the industry's smallest packages.

FAQ

What output voltages does the MAX8530EBTJO-T provide?

The MAX8530EBTJO-T provides fixed output voltages of 2.85V on OUT1 and 2.6V on OUT2, as indicated by the "JO" suffix in the part number per Maxim's Output Voltage Selector Guide. These values are factory-trimmed and require no external feedback components. Output voltage accuracy is guaranteed at ±3% over the full operating temperature range (-40°C to +85°C), ensuring reliable operation in portable environments where thermal cycling occurs frequently. The MAX8530EBTJO-T does not support adjustable outputs.

Does the MAX8530EBTJO-T include thermal protection?

Yes, the MAX8530EBTJO-T includes thermal-overload protection that activates at a junction temperature of 160°C, with 10°C hysteresis. When triggered, the thermal sensor disables both LDO pass transistors, allowing the die to cool before automatically resuming regulation. This feature protects the MAX8530EBTJO-T during sustained overload or poor PCB thermal design. The UCSP package has a maximum continuous power dissipation of 308mW at +70°C ambient, so proper copper pour under the device is essential to avoid repeated thermal cycling in high-current applications.

How does the RESET function work on the MAX8530EBTJO-T?

The RESET output on the MAX8530EBTJO-T is an open-drain, active-low signal that monitors only OUT1 voltage. It asserts (goes low) when OUT1 falls below 87% of its nominal value (e.g., <2.48V for 2.85V output), with 0.5% hysteresis to prevent chatter. After power-up, RESET remains low for ≥100ms once OUT1 reaches regulation, then releases high. During shutdown (SHDN = low), RESET is also forced low. The MAX8530EBTJO-T requires an external pull-up resistor (typically 10–100kΩ to VCC or another supply) to generate a valid logic-high level for the host microprocessor's reset input.

What is the minimum input voltage required for regulation on the MAX8530EBTJO-T?

The MAX8530EBTJO-T requires a minimum input voltage equal to the desired output voltage plus the dropout voltage. At 100mA load, typical dropout is 100mV, so for OUT1 (2.85V), the minimum functional input is ~2.95V. However, the device incorporates undervoltage lockout (UVLO) that disables regulation entirely if IN falls below ~2.25V (typ), preventing erratic behavior during brownout. Therefore, while regulation can technically begin near 2.95V, stable operation across temperature and load requires maintaining VIN ≥3.0V - especially critical in single-cell Li-ion systems nearing end-of-discharge.

Can the MAX8530EBTJO-T be used with ceramic output capacitors?

Yes, the MAX8530EBTJO-T is explicitly optimized for ceramic output capacitors, with stability guaranteed using ≥2.2µF on OUT1 and ≥1µF on OUT2. X7R or X5R dielectrics are recommended for full-temperature-range stability; Z5U or Y5V types require ≥4.7µF to maintain phase margin below -10°C. Tantalum capacitors are not recommended due to potential instability and reliability concerns. Input capacitance should also be ≥2.2µF ceramic, placed as close as possible to the IN and GND pins to suppress line transients and improve PSRR performance.