Diodes Incorporated AP7350D-30CF4-7

Overview

AP7350D-30CF4-7 from Diodes Incorporated is a 3.0V fixed-output, 150mA ultra-low quiescent current LDO regulator with active output discharge, housed in the X2-WLB0606-4 wafer-level chip-scale package. It delivers ±1% output voltage accuracy over temperature, supports 2.0V–5.25V input range, and draws only 0.25µA typical quiescent current-enabling multi-year battery life in wearable sensors and IoT edge nodes.

For engineers reviewing the AP7350D-30CF4-7 datasheet, AP7350D-30CF4-7 pinout, AP7350D-30CF4-7 application, or AP7350D-30CF4-7 equivalent, key selection criteria include its 0.02µA standby current, 0.18V dropout at 150mA/3.0V, EN-controlled shutdown, and integrated active discharge for rapid VOUT decay-critical for power sequencing in space-constrained, low-power embedded systems.

Technical Context

The AP7350D-30CF4-7 integrates a precision voltage reference, error amplifier, current-limit protection, and enable-controlled MOSFET pass element. Its architecture supports fast load transient response (≤50µs recovery) with only 0.1µF ceramic CIN/COUT, enabled by internal compensation optimized for low-ESR capacitors.

Unlike standard LDOs, this variant includes an active output discharge path (35Ω typical) activated when EN is pulled low-ensuring VOUT discharges to <0.1V within milliseconds, eliminating floating rail risks during power-down sequences in multi-rail systems.

Key Specifications

Pinout & Package

AP7350D-30CF4-7 uses the X2-WLB0606-4 wafer-level chip-scale package (0.64mm × 0.64mm × 0.34mm), one of the smallest industry-standard LDO footprints, with SnAgCu solderable micro-balls.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-3002E/MB and XC6210B302MR-G, AP7350D-30CF4-7 uniquely combines ultra-low 0.25µA quiescent current, integrated discharge, and industry-smallest 0.64mm² footprint-making it optimal for next-gen wearables where every micron and nanoamp matters.

Availability

AP7350D-30CF4-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply with guaranteed long-term availability.

Supply support for AP7350D-30CF4-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-efficiency power management and signal integrity solutions for consumer, industrial, and automotive markets.

This part belongs to the AP7350 ultra-low-IQ LDO family, engineered specifically for battery-operated edge devices demanding maximum runtime and minimal PCB real estate-targeting wearables, medical patches, and ultra-compact IoT endpoints.

FAQ

What is the minimum input voltage required for AP7350D-30CF4-7 to maintain regulated 3.0V output at 150mA?

The dropout voltage is 0.18V maximum at 150mA and +25°C, so VIN must be ≥ 3.18V to sustain regulation. At -40°C to +85°C, worst-case dropout rises to 0.35V, requiring VIN ≥ 3.35V for full-load operation across temperature. Input below these thresholds causes output to track VIN minus dropout.

Does AP7350D-30CF4-7 require external capacitors, and what values are recommended?

Yes: a 0.1µF X5R/X7R ceramic capacitor is required between VIN and GND, and another 0.1µF between VOUT and GND. These must be placed adjacent to their respective pins with minimal trace length. Larger bulk capacitors may be added in parallel for high-dynamic-load applications, but the 0.1µF ceramics are mandatory for stability.

How does the active output discharge function operate, and when is it engaged?

The discharge path activates automatically when the EN pin is driven below 0.4V (logic low). It connects VOUT to GND through a ~35Ω internal FET, discharging a 1µF load to <0.1V in under 1ms. The path remains off during normal operation (EN high) and does not affect regulation or efficiency.

Can AP7350D-30CF4-7 be used in automotive applications?

No-this specific variant is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade versions (e.g., AP7350Q series) with PPAP support, IATF 16949 manufacturing, and extended temperature screening. For automotive use, contact Diodes' automotive sales team to obtain qualified alternatives.