Analog Devices Inc./Maxim Integrated MAX8510EXK28-G104

Overview

MAX8510EXK28-G104 from Maxim Integrated is a preset 2.8V ultra-low-noise, low-dropout 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 employs a P-channel MOSFET pass transistor, achieves 40µA ground current, and operates from 2V to 6V input - ideal for powering RF front-ends and precision analog circuitry in portable radios.

For engineers reviewing the MAX8510EXK28-G104 datasheet, MAX8510EXK28-G104 pinout, MAX8510EXK28-G104 application, or MAX8510EXK28-G104 equivalent, key selection criteria include its SC70-5 package footprint, BP pin noise-bypass capability, guaranteed ±3% output voltage accuracy over temperature and load, and sub-1µA shutdown current - critical for battery runtime optimization in Bluetooth accessories and digital cameras.

Technical Context

The MAX8510EXK28-G104 uses an integrated 1.225V bandgap reference and error amplifier to regulate a fixed 2.8V output via internal resistor divider. Its P-channel MOSFET pass transistor (typ. R_DS(ON) = 1Ω) enables low dropout and eliminates base-drive current, reducing quiescent consumption across load conditions.

Noise performance is enhanced by the dedicated BP pin, which accepts a 10nF capacitor to shunt high-frequency noise from the error amplifier's bias network - enabling 11µVRMS output noise. Shutdown logic disables the reference, error amp, and gate driver, dropping supply current below 1µA while placing OUT in high-impedance state.

Key Specifications

Pinout & Package

MAX8510EXK28-G104 is housed in a RoHS-compliant 5-pin SC70 package (2.0mm × 1.25mm × 0.9mm), with exposed pad omitted - optimized for compact layouts in handheld devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise LDO applications.

Compared with TPS79528DBVR and MCP1703T-2802E/MB, MAX8510EXK28-G104 delivers the lowest output noise (11µVRMS) and highest PSRR at 1kHz (78dB) in SC70-5, making it uniquely suited for RF and precision analog applications where spectral purity is non-negotiable - despite lower output current rating.

Availability

MAX8510EXK28-G104 is available at Aetrix Electronics and suitable for Bluetooth portable radios, digital cameras, and portable medical equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MAX8510EXK28-G104 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 consumer applications - emphasizing low power, small size, and high reliability.

The MAX8510 series belongs to Maxim's ultra-low-noise LDO product line, engineered specifically for noise-sensitive RF, imaging, and portable medical systems where traditional LDOs introduce unacceptable signal degradation.

FAQ

What is the exact output voltage tolerance of MAX8510EXK28-G104 over temperature and load?

The MAX8510EXK28-G104 guarantees ±3% output voltage accuracy across -40°C to +85°C ambient temperature and for load currents from 100µA to 80mA. At 25°C and 1mA load, typical deviation is ±1%. This specification ensures predictable biasing for 2.8V-tolerant analog circuits without requiring post-regulation trimming. The MAX8510EXK28-G104 maintains this accuracy due to its trimmed bandgap reference and low-drift error amplifier design.

Can MAX8510EXK28-G104 operate stably with a 0.47µF output capacitor?

No - the MAX8510EXK28-G104 is only guaranteed stable with ≥1µF ceramic output capacitance (X7R or X5R dielectric). Using 0.47µF violates the minimum C_OUT requirement and risks oscillation, especially under light loads or near dropout. The device's compensation is optimized for 1µF, and the stability region chart (Figure toc20) confirms instability below 1µF across all load currents. Always use 1µF or higher for reliable operation. The MAX8510EXK28-G104 datasheet explicitly states "stable with 1µF ceramic capacitor for any load."

Does MAX8510EXK28-G104 require the BP pin to be used for basic functionality?

No - the MAX8510EXK28-G104 functions as a standard LDO without the BP pin connected; however, omitting the 10nF BP-to-OUT capacitor degrades output noise from 11µVRMS to 230µVRMS. The BP pin is optional for general-purpose use but mandatory when ultra-low noise is required - such as powering VCOs or high-speed ADC references. The MAX8510EXK28-G104's BP circuitry is internally disabled in shutdown mode, so no leakage path exists when the device is off.

What is the maximum allowable input voltage for MAX8510EXK28-G104?

The absolute maximum input voltage for MAX8510EXK28-G104 is +7V, but the recommended operating range is 2V to 6V per the Electrical Characteristics table. Exceeding 6V risks violating the input-to-ground stress rating and may accelerate parametric drift or reduce long-term reliability. The MAX8510EXK28-G104's internal P-MOSFET and bandgap circuitry are characterized and guaranteed only within the 2V–6V range, and thermal dissipation rises sharply above VIN = 5.5V at full load.

How does MAX8510EXK28-G104 behave during shutdown?

When SHDN is pulled low (<0.4V), the MAX8510EXK28-G104 disables its voltage reference, error amplifier, gate driver, and pass transistor - reducing supply current to <1µA. The OUT pin enters a high-impedance state with no active discharge path, so external circuitry must manage output voltage decay. Startup delay is typically 300µs (to 90% of 2.8V) with CBP = 10nF. The MAX8510EXK28-G104's shutdown exit timing is independent of load and input voltage within spec.