Analog Devices Inc./Maxim Integrated MAX8869EUE10+

Overview

MAX8869EUE10+ from Maxim Integrated is a 1A, low-dropout linear regulator with fixed +1.0V output, operating from +2.7V to +5.5V input, featuring ±1% output voltage accuracy, 200mV dropout at 1A, and Microcap® stability with only 1µF output capacitance. It delivers regulated power in space-constrained telecom and notebook applications where precision, low quiescent current (500µA), and thermal robustness are critical.

For engineers reviewing the MAX8869EUE10+ datasheet, MAX8869EUE10+ pinout, MAX8869EUE10+ application, or MAX8869EUE10+ equivalent, key selection considerations include its fixed 1.0V output configuration, TSSOP-EP package with exposed pad for thermal management, reset output with 3ms delay, adjustable soft-start, and guaranteed 1A continuous output under industrial temperature range (–40°C to +85°C).

Technical Context

The MAX8869EUE10+ uses an internal P-channel MOSFET pass transistor enabling low 500µA quiescent current and stable operation without base-drive losses. Its Dual Mode architecture selects between factory-preset output (via SET = GND) and adjustable mode (via external resistor divider), with the +1.0V variant hardwired to the internal feedback network.

It integrates a 0.8V reference, error amplifier, MOSFET driver, thermal shutdown (trip at +170°C), foldback current limiting (1.0A short-circuit, 2.0A in-regulation), and open-drain RST output asserting when VOUT falls 8% below nominal with 3ms release delay. The RST remains valid down to VIN = 1.0V.

Key Specifications

Pinout & Package

The MAX8869EUE10+ is housed in a 16-pin TSSOP-EP (Exposed Pad) package rated for 1.5W dissipation, measuring 5.0mm × 4.4mm × 1.1mm with 0.65mm pitch. The exposed pad must be soldered to a large PCB ground plane for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Compared with TPS7A4701RGWR and LT3080IMSE#PBF, the MAX8869EUE10+ uniquely combines fixed 1.0V output, integrated RST with 3ms delay, soft-start control, and TSSOP-EP thermal performance - making it optimal for space-constrained, sequenced, and reset-critical 1.0V applications without adding discrete supervision circuitry.

Availability

MAX8869EUE10+ is available at Aetrix Electronics and suitable for telecom hardware, notebook computers, and mobile phone base stations requiring stable component supply, RoHS-compliant packaging, and guaranteed industrial temperature operation.

Supply support for MAX8869EUE10+ 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 high-performance analog and mixed-signal ICs for power management, sensing, and communications applications.

The MAX8869 product line delivers Microcap®-enabled, high-current LDOs optimized for space-constrained, thermally demanding applications in networking, telecom, and portable computing where low dropout, small output capacitance, and integrated supervision are essential.

FAQ

What output voltage does the MAX8869EUE10+ provide?

The MAX8869EUE10+ provides a factory-preset, fixed +1.0V output voltage. This is achieved by internal resistor-divider feedback configured at manufacture; the SET pin must be connected to GND (≤10kΩ impedance) to maintain preset mode. It does not support adjustable output - unlike other variants in the MAX8869 family such as the MAX8869EUE25+, the MAX8869EUE10+ is specifically trimmed and tested for 1.0V with ±1% accuracy over –40°C to +85°C.

Does the MAX8869EUE10+ include a reset output, and how does it function?

Yes, the MAX8869EUE10+ includes an open-drain RST output (Pin 6) that asserts low when the regulated output falls 8% below its nominal 1.0V value (i.e., ≤920mV). RST remains low for at least 3ms after VOUT recovers to regulation. A 100kΩ pull-up resistor to OUT or another logic supply is required for proper logic-level signaling. This RST output is active during shutdown and valid down to VIN = 1.0V, making it suitable for microcontroller power-on-reset sequencing.

What package type and thermal characteristics does the MAX8869EUE10+ use?

The MAX8869EUE10+ uses a 16-pin TSSOP-EP (Exposed Pad) package measuring 5.0mm × 4.4mm × 1.1mm. Its exposed thermal pad must be soldered to a large PCB ground plane (≥1 in² recommended) to achieve the specified 1.5W power dissipation rating and thermal shutdown threshold of +170°C. Junction-to-ambient thermal resistance depends on board layout, but the EP significantly lowers θJA compared to standard TSSOP, enabling reliable 1A operation in compact industrial layouts.

Can the MAX8869EUE10+ operate with a 1µF output capacitor, and why is this significant?

Yes, the MAX8869EUE10+ is Microcap®-designed to remain stable with only a 1µF ceramic output capacitor - verified across temperature and load. This eliminates the need for larger, higher-ESR capacitors traditionally required by older LDO architectures. In practice, it reduces solution size, cost, and board area, especially valuable in thin-profile notebooks and telecom modules where space and layer count are constrained.

How does the MAX8869EUE10+ handle overcurrent and thermal faults?

The MAX8869EUE10+ features dual-foldback current limiting: 2.0A in-regulation limit and 1.0A short-circuit limit when VOUT drops 8% below 1.0V. It also includes thermal shutdown at +170°C with +20°C hysteresis. During sustained overload, the device cycles on/off to limit average power dissipation. Continuous 1A operation is safe only within the calculated power derating envelope - exceeding it risks thermal shutdown or long-term reliability degradation.