Analog Devices Inc./Maxim Integrated MAX8530EBTJ2

Overview

MAX8530EBTJ2 from Maxim Integrated is a dual low-dropout linear regulator IC with integrated microprocessor reset circuit, designed for space-constrained battery-powered systems. It delivers 200mA from OUT1 (2.85V) and 150mA from OUT2 (1.8V), features 100mV typical dropout at 100mA, 130µA quiescent current, and open-drain active-low RESET with 100ms minimum timeout - used in baseband power sequencing for cellular handsets.

For engineers reviewing the MAX8530EBTJ2 datasheet, MAX8530EBTJ2 pinout, MAX8530EBTJ2 application, or MAX8530EBTJ2 equivalent, key selection criteria include guaranteed dual-output current capability, UCSP package footprint (1.16 × 1.57 mm), reset threshold accuracy (87% of OUT1), thermal shutdown behavior (160°C), and compatibility with ceramic output capacitors ≥2.2µF.

Technical Context

The MAX8530EBTJ2 integrates two independent LDOs with P-channel MOSFET pass transistors, enabling ultra-low quiescent current (130µA) independent of load or dropout voltage. Its internal 1.25V bandgap reference feeds error amplifiers that regulate both outputs via internal resistor dividers - no external feedback required.

RESET functionality monitors only OUT1 voltage, asserting an open-drain low signal when OUT1 falls below 87% of nominal (2.85V → 2.48V threshold), with 100ms minimum timeout and hysteresis of 0.5%. Shutdown is controlled by a single logic-input (SHDN) that reduces supply current to <1µA.

Key Specifications

Pinout & Package

MAX8530EBTJ2 is packaged in a 6-bump UCSP (1.16 × 1.57 × 0.6 mm, 3 × 2 grid), optimized for ultra-compact PCB layouts in mobile applications. The die attach pad is non-exposed; thermal dissipation relies on solder joint conduction through bumps to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX8530ETTK2, the MAX8530EBTJ2 trades thermal headroom for minimal PCB area - critical in sub-10mm-thick handsets. Versus TPS70245PWPR, it delivers autonomous reset functionality and lower quiescent current, reducing design complexity and extending battery life in always-on portable systems.

Availability

MAX8530EBTJ2 is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, notebook subsystems, and wireless LAN cards requiring stable component supply with long-term lifecycle support.

Supply support for MAX8530EBTJ2 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and consumer applications.

The MAX8530/MAX8531 product line was engineered specifically for ultra-compact, battery-operated portable electronics - delivering dual regulated outputs with integrated power-good monitoring in the industry's smallest UCSP footprint.

FAQ

What output voltages does the MAX8530EBTJ2 provide?

The MAX8530EBTJ2 provides fixed output voltages of 2.85V on OUT1 (guaranteed 200mA) and 1.8V on OUT2 (guaranteed 150mA), as specified in the Output Voltage Selector Guide. These values are factory-trimmed and do not require external resistors. The MAX8530EBTJ2 datasheet confirms ±3% accuracy over -40°C to +85°C and full load range, making it suitable for baseband processor core and I/O rail applications where precision and stability are essential.

Does the MAX8530EBTJ2 include a reset function, and how does it operate?

Yes, the MAX8530EBTJ2 includes an integrated open-drain, active-low RESET output that monitors only the OUT1 (2.85V) rail. It asserts low when OUT1 drops below 87% of nominal (2.48V), with 0.5% hysteresis, and maintains the signal for a minimum of 100ms. The MAX8530EBTJ2 RESET pin requires an external pull-up resistor to interface with microprocessor reset inputs and remains low during shutdown. This eliminates the need for external reset ICs in space-constrained designs.

What package type is used for the MAX8530EBTJ2, and what are its dimensions?

The MAX8530EBTJ2 uses a 6-bump UCSP (Ultra Compact Silicon Package) with a 3 × 2 bump array, measuring 1.16 mm × 1.57 mm × 0.6 mm. Per Maxim's package drawing 21-0097G and ordering information, this leaded (non-lead-free) variant uses pkgcode/variation B6-6*. The UCSP places all terminals on the bottom surface, enabling the smallest possible PCB footprint - approximately 60% smaller than comparable SOT-23 solutions - ideal for slim mobile devices.

What is the quiescent current of the MAX8530EBTJ2, and how does it behave under load?

The MAX8530EBTJ2 draws 130µA quiescent current with both LDOs enabled and zero load, and this value remains constant regardless of load current or dropout voltage - a direct result of its internal P-channel MOSFET pass transistor architecture. At 100mA load per output, total supply current stays at 150µA (typ), confirmed in the Electrical Characteristics table. This stable, ultra-low IQ enables multi-year battery life in always-on portable electronics, distinguishing it from NPN-based LDOs whose quiescent current rises significantly under load.

Can the MAX8530EBTJ2 be used with ceramic output capacitors, and what values are recommended?

Yes, the MAX8530EBTJ2 is optimized for ceramic output capacitors. The datasheet specifies a minimum of 2.2µF for OUT1 (2.85V) and 1µF for OUT2 (1.8V) to ensure stability across temperature and load. X7R or X5R dielectrics are recommended; Z5U/Y5V types require ≥4.7µF below -10°C. Input capacitance must also be ≥2.2µF. Using these values achieves <20mVpp ripple and fast load-transient response - verified in Typical Operating Characteristics graphs like LOAD TRANSIENT and LINE TRANSIENT for the MAX8530EBTJ2.