Diodes Incorporated AP7315-30W5-7

Overview

AP7315-30W5-7 from Diodes Incorporated is a 3.0V fixed-output, 150mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply rails in compact portable electronics.

For engineers reviewing the AP7315-30W5-7 datasheet, AP7315-30W5-7 pinout, AP7315-30W5-7 application, or AP7315-30W5-7 equivalent, this page delivers verified electrical specs, SOT25 package layout guidance, EN-controlled enable functionality, and real-world use cases in battery-powered wireless subsystems.

Technical Context

The AP7315-30W5-7 employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its enable input (EN) provides precise on/off control with defined logic thresholds (V_IL ≤ 0.5V, V_IH ≥ 1.3V), and it operates across 1.7V–5.25V input range while maintaining regulation down to 210mV dropout at 150mA for 3.0V output.

It features non-discharge operation (no internal output discharge FET), thermal shutdown protection, and short-circuit current limiting (~55mA fold-back). Stability is ensured with ≥0.47µF ceramic output capacitance and low-ESR requirements validated across –40°C to +85°C ambient.

Key Specifications

Pinout & Package

SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm) package with exposed thermal pad (not electrically connected); optimized for high-density portable PCBs requiring minimal footprint and efficient heat dissipation via GND-connected copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-3002E/TT and XC6206P302MR-G, the AP7315-30W5-7 uniquely balances RF-grade noise suppression (60µV_rms), high PSRR (75dB), precision output (±1%), and active enable control - making it the only viable choice for noise-sensitive 3.0V analog/RF subsystems in space-constrained designs.

Availability

AP7315-30W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, Wi-Fi transceiver core supply, camera module analog front-end, and wireless adapter USB interface logic requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AP7315-30W5-7 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design and manufacturing facilities certified to IATF 16949 and ISO 9001 standards.

The AP7315 series belongs to Diodes' high-performance LDO portfolio, engineered specifically for battery-powered portable electronics demanding ultra-low noise, high PSRR, and minimal quiescent current in miniature packages.

FAQ

What is the maximum allowable input voltage for AP7315-30W5-7?

The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger thermal shutdown or degrade long-term reliability, especially at elevated temperatures.

Does AP7315-30W5-7 include output discharge functionality?

No - AP7315-30W5-7 is the non-discharge variant (no internal pull-down FET on VOUT). When disabled via EN, the output remains floating and retains its voltage until external leakage discharges it. For fast VOUT discharge, select AP7315D-30W5-7 instead.

Can AP7315-30W5-7 operate with ceramic capacitors smaller than 0.47µF?

No - the datasheet specifies minimum 0.47µF ceramic output capacitance for stability across temperature and load. Using smaller values risks oscillation or degraded transient response, particularly under 100mA load steps, as confirmed by ESR vs. I_OUT stability graphs in DS38352 Rev. 2-2.

What is the thermal pad connection recommendation for SOT25 package?

The exposed thermal pad on the SOT25 package is not electrically connected. It must be soldered to a large GND-connected copper pour on the PCB to enhance thermal dissipation; however, it must not serve as the sole GND electrode - dedicated GND pin connections remain mandatory for signal integrity.