Analog Devices Inc./Maxim Integrated MAX8517EUB/V+

Overview

MAX8517EUB/V+ 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). It features ±1.4% output accuracy over load/line/temperature (0°C to +85°C), 200mV dropout at 1A, 320μA typical ground current, and integrated power-OK (POK) output for system monitoring in high-density server and optical module power rails.

For engineers reviewing the MAX8517EUB/V+ datasheet, MAX8517EUB/V+ pinout, MAX8517EUB/V+ application, or MAX8517EUB/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed ceramic-capacitor compatibility (1μF IN / 4.7μF OUT), POK timing behavior (50μs fault delay), and real-world transient response data (45mV deviation for 20mA→1A step).

Technical Context

The MAX8517EUB/V+ uses an internal p-channel MOSFET pass device with 100mΩ typical on-resistance, enabling stable regulation down to 1.425V input without base-drive current penalties. Its error amplifier includes inherent soft-start and supports external feedback via FB pin for precise output voltage setting.

It integrates open-drain POK logic that asserts high only when output is within ±10% of nominal value, with 50μs internal delay to prevent chatter during marginal conditions. Shutdown is controlled by EN pin, drawing <25μA quiescent current while disabling output and forcing POK low.

Key Specifications

Pinout & Package

The MAX8517EUB/V+ is housed in a 10-pin μMAX® package (3mm × 5mm) with exposed pad (EP) soldered to PCB ground for optimal thermal dissipation (824mW at TA = +70°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A8300RGRT and MCP1826T-1202E/DB, the MAX8517EUB/V+ uniquely combines 1A adjustability, integrated POK, μMAX footprint, and sub-200mV dropout - making it optimal for space-constrained, sequenced-power systems requiring autonomous status reporting.

Availability

MAX8517EUB/V+ is available at Aetrix Electronics and suitable for server power delivery, optical module biasing, and industrial base station applications requiring stable component supply, RoHS-compliant lead-free packaging, and automotive-grade reliability validation.

Supply support for MAX8517EUB/V+ 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, mixed-signal, and power-management ICs for demanding industrial, communications, and computing applications.

The MAX8516/MAX8517/MAX8518 family targets high-efficiency, low-noise point-of-load regulation in thermally dense systems - emphasizing ceramic-capacitor compatibility, minimal dropout, and integrated system-monitoring features like POK.

FAQ

What is the maximum output current capability of the MAX8517EUB/V+?

The MAX8517EUB/V+ delivers up to 1A of continuous output current with guaranteed 200mV dropout voltage. Its current limit is specified between 1.6A and 2.4A under typical conditions, providing robust short-circuit protection while sustaining full-rated load across the full temperature range (−40°C to +85°C). This makes MAX8517EUB/V+ suitable for powering high-current digital loads such as FPGAs and high-speed SERDES interfaces.

Does the MAX8517EUB/V+ require external components for stable operation?

Yes - the MAX8517EUB/V+ requires a minimum 1μF ceramic capacitor between IN and GND, and a 4.7μF ceramic capacitor between OUT and GND for stable 1A operation. These values ensure loop stability, low ESR performance, and meet transient response specifications (45mV deviation for 20mA→1A step). Larger output capacitance further reduces overshoot but is not mandatory for basic functionality. The MAX8517EUB/V+ does not require external compensation networks.

How does the POK (power-OK) output function on the MAX8517EUB/V+?

The POK output on the MAX8517EUB/V+ is an open-drain signal that transitions high only when the regulated output voltage remains within ±10% of its nominal value. It includes a 50μs internal delay to prevent false triggering during brief excursions. When the device is in shutdown (EN = GND), POK is forced low. An external pullup resistor to IN is required. This behavior enables reliable system power sequencing and fault detection without additional supervisory ICs - a key differentiator of the MAX8517EUB/V+ versus standard LDOs.

What is the significance of the "/V+" suffix in MAX8517EUB/V+?

The "/V+" suffix in MAX8517EUB/V+ indicates two critical qualifications: "V" denotes automotive-grade qualification per AEC-Q100 stress testing, and "+" confirms lead(Pb)-free and RoHS-compliant packaging. This dual designation means the MAX8517EUB/V+ meets stringent reliability, thermal cycling, and contamination standards required for automotive infotainment, ADAS, and telematics modules - while maintaining identical electrical performance to the commercial-grade MAX8517EUB.

Can the MAX8517EUB/V+ be used in adjustable-output configurations?

Yes - the MAX8517EUB/V+ is inherently adjustable via its FB pin. Using two external resistors (R1, R2) in a voltage divider from OUT to GND, the output voltage is set by V_OUT = 0.5V × (1 + R1/R2), supporting outputs from 0.5V to (VIN − 0.2V). The FB threshold is accurate to ±0.6% initially and ±1.4% over temperature, enabling precise core voltage tuning for processors and ASICs. R2 ≤ 5kΩ is recommended to optimize accuracy and PSRR.