Diodes Incorporated AP7315Q-25W5-7

Overview

AP7315Q-25W5-7 from Diodes Incorporated is an automotive-grade 2.5V fixed-output LDO regulator in SOT25 package, delivering 150mA output current with ±1% voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, AEC-Q100 Grade 1 qualification, and is designed for noise-sensitive power rails in ADAS camera modules and infotainment systems.

For engineers reviewing the AP7315Q-25W5-7 datasheet, AP7315Q-25W5-7 pinout, AP7315Q-25W5-7 application, or AP7315Q-25W5-7 equivalent, key selection criteria include dropout voltage (≤380mV @150mA for 2.5V output), thermal resistance (ϴJA = 179°C/W), EN logic thresholds (V_IL ≤ 0.5V, V_IH ≥ 1.3V), and automotive-compliant PPAP support.

Technical Context

The AP7315Q-25W5-7 uses a CMOS-based low-dropout architecture with internal N-channel pass transistor, enabling stable regulation across 1.7V–5.25V input range while maintaining 2.5V output under 150mA load. Its high PSRR (75dB @1kHz) and ultra-low 60µVrms noise stem from optimized internal biasing and feedback loop design.

Enable functionality is implemented via a dedicated EN pin with defined logic thresholds (0–0.5V for shutdown, ≥1.3V for activation), and the device includes fold-back short-circuit protection limiting output current to ~55mA during V_OUT-to-GND fault. No output discharge function is integrated (non-DQ variant).

Key Specifications

Pinout & Package

SOT25 (5-pin) surface-mount package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, and 0.016g mass. Thermal resistance: ϴ_JA = 179°C/W, ϴ_JC = 52°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP7315DQ-25W5-7, the AP7315Q-25W5-7 eliminates discharge circuitry to reduce leakage and simplify layout; versus TPS74625PQWDRBRQ1, it trades higher current capability for smaller SOT25 footprint, lower unit cost, and proven fit in compact ADAS camera modules.

Availability

AP7315Q-25W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics GNSS front-ends requiring stable component supply, AEC-Q100 compliance, and PPAP documentation support.

Supply support for AP7315Q-25W5-7 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 devices, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q200 and AEC-Q100 standards.

The AP7315Q series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, high-reliability power management in ADAS, infotainment, and body electronics applications.

FAQ

What is the minimum input voltage required for AP7315Q-25W5-7 to regulate 2.5V output at 150mA?

The dropout voltage is specified as ≤380mV at 150mA for 2.5V output variants. Therefore, the minimum input voltage is 2.5V + 0.38V = 2.88V. Operation below this voltage results in unregulated output, confirmed by the Electrical Characteristics table and Typical Characteristics curves showing V_OUT collapse below VIN ≈ 2.9V under full load.

Does AP7315Q-25W5-7 require an external output capacitor, and what value is recommended?

Yes-an output capacitor is mandatory for stability and transient response. The datasheet specifies a minimum 0.47µF ceramic capacitor placed adjacent to the VOUT and GND pins. Low-ESR X5R/X7R types are recommended; bulk capacitance may be added for large load steps, but the 0.47µF ceramic remains essential for high-frequency stability.

How does the EN pin behave during power-up, and what happens if left unconnected?

The EN pin must not float: it has no internal pull-up/down. If left unconnected, the regulator behavior is undefined and may oscillate or fail to start. For always-on operation, tie EN directly to VIN; for controlled sequencing, drive it with a clean logic signal meeting V_IH ≥1.3V and V_IL ≤0.5V thresholds per the Electrical Characteristics table.

Is AP7315Q-25W5-7 compatible with lead-free reflow profiles, and what is its moisture sensitivity level?

Yes-it is fully RoHS-compliant, lead-free, and halogen-free, with matte tin-plated leads solderable per MIL-STD-202, Method 208. Its moisture sensitivity level is J-STD-020 Level 1, meaning it can be stored indefinitely at ≤30°C/60% RH and subjected to standard Pb-free reflow profiles without baking.