Analog Devices Inc./Maxim Integrated MAX8510EXK28+T

Overview

MAX8510EXK28+T from Maxim Integrated is a 2.8V fixed-output, ultra-low-noise LDO linear regulator delivering up to 120mA output current with 120mV dropout at full load, 11μVRMS output noise (100Hz–100kHz), and 78dB PSRR at 1kHz. It uses a P-channel MOSFET pass device, achieves 40μA ground current, and operates from 2V to 6V input - ideal for powering RF sections and precision analog circuitry in portable wireless devices.

For engineers reviewing the MAX8510EXK28+T datasheet, MAX8510EXK28+T pinout, MAX8510EXK28+T application, or MAX8510EXK28+T equivalent, key selection criteria include its guaranteed 2.8V ±1% accuracy over temperature, SC70-5 package footprint, shutdown current <1μA, stability with only 1μF ceramic output capacitance, and BP-pin-enabled noise reduction architecture.

Technical Context

The MAX8510EXK28+T implements a bandgap-referenced error amplifier driving a low-R_DS(ON) P-channel MOSFET pass transistor, enabling low dropout and minimal quiescent current across load and temperature. Its dedicated BP pin connects to a 10nF capacitor to shunt high-frequency noise from the internal reference path, directly enabling the 11μVRMS noise performance.

Shutdown is controlled via a CMOS-compatible SHDN pin (logic low disables regulation, dropping supply current to <1μA), while thermal protection activates at 160°C with 10°C hysteresis. The device is internally compensated and requires no external feedback network - output voltage is factory-trimmed to 2.8V with ±1% initial accuracy.

Key Specifications

Pinout & Package

MAX8510EXK28+T is housed in a RoHS-compliant 5-pin SC70 package (2.0mm × 1.25mm × 0.95mm height), with exposed pad omitted - optimized for space-constrained PCB layouts in mobile and wearable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6219B282MR-G and ADP125ARHZ-2.8-R7, the MAX8510EXK28+T uniquely delivers 2.8V regulation with industry-leading 11μVRMS noise and BP-enabled noise tailoring - making it irreplaceable for RF and high-fidelity analog applications where spectral purity is non-negotiable.

Availability

MAX8510EXK28+T is available at Aetrix Electronics and suitable for cellular handsets, Bluetooth accessories, portable imaging systems, and battery-powered audio equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MAX8510EXK28+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.

The MAX8510 series belongs to Maxim's ultra-low-noise LDO product line, engineered specifically for noise-sensitive RF, audio, and precision analog subsystems in space-constrained portable electronics.

FAQ

What is the output voltage tolerance of the MAX8510EXK28+T over temperature?

The MAX8510EXK28+T guarantees ±2% output voltage accuracy over the full -40°C to +85°C operating range, with ±1% typical accuracy at +25°C. This is achieved through laser-trimmed internal feedback and a stable 1.225V bandgap reference, ensuring reliable 2.8V biasing for temperature-varying circuits without external calibration.

Can the MAX8510EXK28+T operate stably with a 0.47μF ceramic output capacitor?

No - the MAX8510EXK28+T requires a minimum of 1μF ceramic output capacitance for guaranteed stability across all load and temperature conditions. Using 0.47μF may cause oscillation or degraded transient response, as confirmed by the stability region chart in the datasheet (Figure MAX8510 toc20). Always use ≥1μF X5R/X7R dielectric.

Does the MAX8510EXK28+T require an input capacitor, and if so, what value is recommended?

Yes - the MAX8510EXK28+T requires a minimum 1μF ceramic input capacitor placed close to the IN and GND pins. Larger values (e.g., 4.7μF–10μF) improve line-transient response and high-frequency PSRR, especially when powered from noisy switcher outputs. The device is not stable without this input bypass.

How does the BP pin function in the MAX8510EXK28+T, and what happens if it's left unconnected?

The BP pin in the MAX8510EXK28+T connects to an internal noise-reduction node; a 10nF capacitor between BP and OUT shunts high-frequency reference noise, enabling the 11μVRMS specification. If left unconnected, output noise rises to ~230μVRMS (matching MAX8511 behavior), degrading RF and audio performance - it must be used for specified low-noise operation.

Is the MAX8510EXK28+T pin-compatible with other variants in the MAX8510/MAX8511/MAX8512 family?

Yes - all SC70-5 versions (including MAX8510EXK28+T, MAX8511EXK28+T, and MAX8512EXK+T) share identical pinouts and footprints. However, functional differences exist: MAX8510EXK28+T requires the BP capacitor for low noise; MAX8511EXK28+T has BP internally shorted and omits the capacitor; MAX8512EXK+T replaces BP with FB for adjustable output - direct substitution requires circuit review.