Analog Devices Inc./Maxim Integrated MAX8510EXK45+G65

Overview

MAX8510EXK45+G65 from Maxim Integrated is a 4.5V fixed-output, ultra-low-noise LDO linear regulator with P-channel MOSFET pass element, delivering up to 120mA output current, 120mV dropout at full load, 11μVRMS output noise (100Hz–100kHz), and 78dB PSRR at 1kHz - designed for RF-sensitive analog power rails in portable wireless devices.

For engineers reviewing the MAX8510EXK45+G65 datasheet, MAX8510EXK45+G65 pinout, MAX8510EXK45+G65 application, or MAX8510EXK45+G65 equivalent, key selection criteria include its SC70-5 package footprint, 40μA ground current across temperature, guaranteed ±1% output accuracy at 1mA, and stable operation with only 1μF ceramic output capacitance.

Technical Context

The MAX8510EXK45+G65 implements a precision bandgap reference (1.225V) feeding an error amplifier that drives a low-R_DS(ON) P-channel MOSFET pass transistor - enabling ultra-low quiescent current (40μA typical) and minimal dropout without base-drive losses. Its BP pin supports external 10nF bypass capacitor integration to suppress high-frequency noise via dedicated noise-bypass circuitry.

Shutdown logic disables the reference, error amplifier, and gate driver when SHDN is pulled low, reducing supply current to <1μA. Thermal shutdown activates at +160°C with 10°C hysteresis, and current limiting clamps output to 130–300mA depending on conditions - ensuring robustness under fault or overload.

Key Specifications

Pinout & Package

MAX8510EXK45+G65 is housed in a RoHS-compliant 5-pin SC70 package (2.0mm × 1.25mm × 0.95mm), with exposed pad omitted - optimized for space-constrained portable designs where thermal dissipation is managed via board-level copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS79545DBVR and MCP1703T-4502E/MB, MAX8510EXK45+G65 uniquely balances ultra-low noise (11μV_RMS), low dropout (120mV), and minimal quiescent current (40μA) in the SC70 footprint - making it optimal for space- and noise-constrained portable RF subsystems.

Availability

MAX8510EXK45+G65 is available at Aetrix Electronics and suitable for Bluetooth radios, digital cameras, cellular handsets, portable audio devices, and other battery-powered electronics requiring stable component supply with consistent parametric performance across production lots.

Supply support for MAX8510EXK45+G65 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 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 portable and battery-operated equipment.

FAQ

What is the output voltage tolerance of the MAX8510EXK45+G65 over temperature and load?

The MAX8510EXK45+G65 guarantees ±1% output voltage accuracy at 1mA and +25°C. Over the full operating temperature range (–40°C to +85°C) and load current (100μA to 80mA), accuracy degrades to ±2%, and over 100μA to 80mA across temperature, it is specified as ±3%. This ensures reliable 4.5V regulation for analog circuits even under varying thermal and loading conditions. The MAX8510EXK45+G65 maintains this performance without external trimming components.

Can the MAX8510EXK45+G65 operate stably with a 1μF ceramic output capacitor?

Yes - the MAX8510EXK45+G65 is explicitly characterized and guaranteed stable with a minimum 1μF X7R or X5R ceramic capacitor on the output, regardless of load. This eliminates the need for larger, more expensive tantalum or electrolytic capacitors. However, Y5V or Z5U dielectrics may require ≥2.2μF below –10°C to maintain stability. The MAX8510EXK45+G65 achieves this with internal compensation optimized for low-ESR ceramics.

What is the purpose of the BP pin on the MAX8510EXK45+G65, and how should it be used?

The BP (Bypass) pin on the MAX8510EXK45+G65 connects to an internal noise-reduction circuit that dramatically lowers output voltage noise. It must be connected to the OUT pin via a 10nF ceramic capacitor - this configuration reduces RMS noise from ~230μV (typical for MAX8511/MAX8512) to just 11μV_RMS. During shutdown, BP is internally shorted to OUT, so no special handling is needed. The MAX8510EXK45+G65 relies on this BP network to achieve its ultra-low-noise specification.

Does the MAX8510EXK45+G65 include overcurrent and thermal protection?

Yes - the MAX8510EXK45+G65 integrates both overcurrent limiting and thermal shutdown. Its current limit activates at 130mA (min) to 300mA (max), protecting against short circuits. Thermal shutdown engages at +160°C junction temperature with 10°C hysteresis, cycling the output off/on until cooling occurs. These protections are fully internal and require no external components. The MAX8510EXK45+G65 remains functional after recovery without latch-up or manual reset.

What is the shutdown current consumption of the MAX8510EXK45+G65?

When the SHDN pin is pulled low, the MAX8510EXK45+G65 enters ultra-low-power shutdown mode, drawing less than 1μA total supply current - measured at +25°C and dropping to <0.05μA at +85°C. This enables long-term battery preservation in always-off states. The MAX8510EXK45+G65 exits shutdown within 300μs after SHDN is released, ensuring rapid system wake-up without external timing components.