Analog Devices Inc./Maxim Integrated MAX8516EUB/GG8

Overview

MAX8516EUB/GG8 from Maxim Integrated is a 1A, low-dropout linear regulator with PMOS pass transistor, operating from 1.425V to 3.6V input and delivering adjustable output from 0.5V to (VIN − 0.2V) with ±1.4% accuracy over 0°C to +85°C. It features 200mV max dropout at 1A, 320μA typical ground current, and supports ceramic input/output capacitors (1μF/4.7μF) for high transient response in space-constrained server and optical module power rails.

For engineers reviewing the MAX8516EUB/GG8 datasheet, MAX8516EUB/GG8 pinout, MAX8516EUB/GG8 application, or MAX8516EUB/GG8 equivalent, key selection criteria include dropout voltage at full load, FB threshold stability across temperature, shutdown quiescent current, thermal shutdown thresholds, and compatibility with compact μMAX® packaging for high-density PCB layouts.

Technical Context

The MAX8516EUB/GG8 uses an internal p-channel MOSFET pass device with 100mΩ typical on-resistance, eliminating base-drive current and enabling stable operation down to 1.425V input without sacrificing transient performance. Its error amplifier includes inherent soft-start and delivers ±0.6% initial FB threshold accuracy (500mV nominal).

It integrates undervoltage lockout (1.35V typ, 70mV hysteresis), short-circuit protection (2A current limit), and thermal shutdown (165°C trip, 150°C recovery). Unlike PNP-based LDOs, supply current remains low (340μA typ in dropout) and independent of load or headroom.

Key Specifications

Pinout & Package

The MAX8516EUB/GG8 is housed in a 10-pin μMAX® package (3mm × 5mm) with exposed pad (EP) soldered to PCB ground for optimal thermal dissipation. Pin 10 is internally pulled down to GND via 10kΩ resistor and must be left floating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS7A4700RGWR and MCP1826T-1202E/OT, the MAX8516EUB/GG8 uniquely balances 1A capability, 200mV dropout, adjustable output, and μMAX® footprint-making it optimal for thermally dense, multi-rail embedded systems needing design flexibility and high efficiency at low VIN.

Availability

MAX8516EUB/GG8 is available at Aetrix Electronics and suitable for server power delivery, optical module biasing, and base station RF front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX8516EUB/GG8 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 ICs for industrial, communications, and computing markets.

The MAX8516EUB/GG8 belongs to Maxim's low-input, low-dropout LDO family designed specifically for high-current, low-headroom applications in space-constrained infrastructure equipment where thermal efficiency and output accuracy are critical.

FAQ

What is the minimum input voltage required for stable regulation with MAX8516EUB/GG8?

The MAX8516EUB/GG8 requires a minimum input voltage of 1.425V to maintain stable regulation and specified output accuracy. Below this threshold, undervoltage lockout activates and disables regulation. This enables direct use with single-cell Li-ion batteries (nominal 3.7V, discharged to ~2.8V) and low-voltage logic rails such as 1.5V or 1.8V domains, provided the dropout margin (≥200mV at 1A) is maintained for the target output voltage. The device will not operate below 1.425V.

Does MAX8516EUB/GG8 support adjustable output voltage, and how is it configured?

Yes, the MAX8516EUB/GG8 supports fully adjustable output voltage from 0.5V to (VIN − 0.2V) using an external resistor divider connected to the FB pin. The feedback threshold is 500mV ±0.6% initial accuracy, and the output is calculated as V_OUT = 0.5V × (1 + R1/R2). R2 should be ≤5kΩ to optimize accuracy and PSRR. For example, setting V_OUT = 1.2V requires R1 = 14kΩ and R2 = 10kΩ. No internal DAC or digital interface is involved - it is purely analog resistor-based configuration.

What thermal management provisions does MAX8516EUB/GG8 include, and how should the exposed pad be handled?

The MAX8516EUB/GG8 includes thermal shutdown at +165°C (trip) with +15°C hysteresis (recovery at +150°C) and relies on its exposed pad (EP) for effective heat conduction. The EP must be soldered directly to a large PCB ground plane or multiple thermal vias to minimize θ_JA. At T_A = +70°C, the package supports 824mW continuous dissipation (derating 10.3mW/°C above +70°C). Failure to connect EP results in rapid junction overheating under 1A load, triggering thermal shutdown and potential reliability degradation.

Can MAX8516EUB/GG8 be used with ceramic capacitors only, and what are the minimum values?

Yes, the MAX8516EUB/GG8 is fully stable with ceramic capacitors only: a minimum 1μF X5R/X7R ceramic capacitor between IN and GND, and a minimum 4.7μF ceramic capacitor between OUT and GND for 1A operation. Smaller output capacitance (e.g., 2.2μF) may be used for loads <500mA, scaled per C_OUT = I_OUT(MAX) × (1μF/200mA). Electrolytic or tantalum capacitors are unnecessary and not recommended, as the internal compensation is optimized for low-ESR ceramics.

How does the enable (EN) pin function, and what is its logic threshold?

EN is a logic-controlled enable input: pulling EN low (≤0.4V) places MAX8516EUB/GG8 in shutdown mode, reducing supply current to <25μA; pulling EN high (≥1.2V) enables normal operation. EN can be tied directly to IN for always-on use. During shutdown, the output is actively pulled low via an internal 10kΩ resistor. The pin has ±1μA bias current and is compatible with standard CMOS logic levels, including 1.2V, 1.8V, and 3.3V GPIO interfaces without level-shifting.