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 featuring 11µV_RMS output noise, 78dB PSRR at 1kHz, and 120mV dropout at 120mA load. It uses a P-channel MOSFET pass element, delivers up to 120mA, and maintains only 40µA ground current - ideal for powering RF front-ends and precision analog circuitry in battery-constrained portable devices.

For engineers reviewing the MAX8510EXK28-T datasheet, MAX8510EXK28-T pinout, MAX8510EXK28-T application, or MAX8510EXK28-T equivalent, key selection criteria include its SC70-5 package footprint, BP pin noise-bypass capability, guaranteed ±3% output accuracy over temperature, and compatibility with 1µF ceramic output capacitors without external compensation.

Technical Context

The MAX8510EXK28-T employs an internal 1.225V bandgap reference and error amplifier driving a low-R_DS(ON) P-channel MOSFET pass transistor, enabling stable regulation with minimal quiescent current across input voltages from 2V to 6V. Its BP pin connects to an external 10nF capacitor to shunt high-frequency noise from the reference node, directly enabling the 11µV_RMS noise performance.

Shutdown is controlled via the SHDN pin (logic-low active), reducing supply current to <1µA; during shutdown, the BP pin is shorted to OUT. Thermal protection activates at +160°C with 10°C hysteresis, and current limiting is set between 130mA (min) and 300mA (max), with guaranteed 120mA continuous output under all operating conditions.

Key Specifications

Pinout & Package

MAX8510EXK28-T is housed in a RoHS-compliant 5-pin SC70-5 package (2.0mm × 1.25mm × 0.9mm), optimized for space-constrained portable designs. The exposed pad is absent in SC70; thermal dissipation relies on PCB copper area connected to GND via standard trace routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6219B282MR-G and ADP125ARZ-2.8-R7, the MAX8510EXK28-T uniquely delivers 11µV_RMS noise in SC70-5 while maintaining 120mV dropout and 40µA quiescent current - making it irreplaceable for miniaturized, noise-critical RF and precision analog systems where both size and spectral purity are constrained.

Availability

MAX8510EXK28-T is available at Aetrix Electronics and suitable for cellular handsets, Bluetooth accessories, and portable medical sensors requiring stable component supply, long-term lifecycle support, and guaranteed 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 industrial, communications, and consumer applications.

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

FAQ

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

The MAX8510EXK28-T guarantees ±3% output voltage accuracy over the full operating range of -40°C to +85°C and for output currents from 100µA to 80mA. At 25°C and 1mA load, the tolerance tightens to ±1%. This specification ensures reliable operation of 2.8V logic interfaces and analog circuits without external trimming or calibration in the MAX8510EXK28-T design.

Can the MAX8510EXK28-T operate stably with less than 1µF output capacitance?

No - the MAX8510EXK28-T is characterized and guaranteed stable only with ≥1µF ceramic output capacitance. Reducing C_OUT below this value risks oscillation or degraded transient response, especially near dropout. The device's internal compensation is optimized for 1µF, and the datasheet explicitly states "stable with 1µF ceramic capacitor for any load" - making lower values non-compliant per design specifications for the MAX8510EXK28-T.

Is the BP pin on the MAX8510EXK28-T required for basic operation?

The BP pin is not required for basic regulation but is essential to achieve the MAX8510EXK28-T's specified 11µV_RMS output noise. Without the 10nF BP-to-OUT capacitor, output noise rises to ~230µV_RMS. For applications where noise is not critical (e.g., digital I/O rails), the BP pin may be left unconnected - however, the MAX8510EXK28-T datasheet confirms that full performance validation assumes BP is properly implemented.

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

The absolute maximum input voltage for the MAX8510EXK28-T is +7V, but the recommended operating range is 2V to 6V. Exceeding 6V risks violating the internal voltage ratings of the P-channel pass transistor and bandgap reference circuitry. Operation at 6V is permissible only if power dissipation remains within thermal limits - for example, at 120mA load and 2.8V output, P_D = 120mA × (6V − 2.8V) = 384mW, which exceeds the SC70-5 package's 247mW limit at +70°C ambient.

Does the MAX8510EXK28-T support reverse current protection?

No - the MAX8510EXK28-T does not integrate reverse current protection. When the output voltage exceeds the input (e.g., during hot-swap or backup battery scenarios), current can flow backward from OUT to IN through the body diode of the internal P-channel MOSFET. System-level protection (e.g., an external Schottky diode in series with IN) is required if reverse current must be blocked in the MAX8510EXK28-T application.