Diodes Incorporated AP7330-W5-7

Overview

AP7330-W5-7 from Diodes Incorporated is a 300mA low-dropout linear regulator with ±1% output voltage accuracy, 80dB PSRR at 1kHz, and 60µV_rms output noise (10Hz–100kHz), designed for RF supply and portable media applications requiring stable, low-noise biasing in space-constrained SOT25 layouts.

For engineers reviewing the AP7330-W5-7 datasheet, AP7330-W5-7 pinout, AP7330-W5-7 application, or AP7330-W5-7 equivalent, this page delivers verified specifications including dropout voltage vs. V_OUT, EN logic thresholds, ADJ reference voltage (0.8V), thermal shutdown behavior (+150°C), and SOT25 package thermal resistance (θ_JA = 179°C/W).

Technical Context

The AP7330-W5-7 implements a CMOS-based LDO architecture with internal 0.8V reference, error amplifier, current-limit circuitry, and active enable control. Its adjustable output (1.0V–4.5V) is set via external resistor divider on the ADJ pin, with R2 ≤ 10kΩ required to stabilize the reference node.

It features built-in short-circuit protection (fold-back current limit ~55mA), thermal shutdown with 20°C hysteresis, and auto-discharge disabled by default (non-D variant). Quiescent current is 45µA typical at zero load, rising to 78µA max, while standby current drops to 0.01µA when EN = 0V.

Key Specifications

Pinout & Package

SOT25 (5-pin) package with 1.6mm × 2.8mm footprint, 0.95mm height, and exposed pad for thermal dissipation. Thermal resistance θ_JA = 179°C/W on JEDEC High-K board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-3302E/TT and XC6210B332MR-G, the AP7330-W5-7 uniquely balances 300mA capability, 80dB PSRR, ±1% accuracy, and SOT25 footprint-making it optimal for multi-rail portable RF systems needing both noise immunity and voltage flexibility.

Availability

AP7330-W5-7 is available at Aetrix Electronics and suitable for smartphone baseband power, RF amplifier biasing, portable camera sensor supplies, and wireless audio codec regulation requiring stable component supply across high-volume consumer electronics production.

Supply support for AP7330-W5-7 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 for power management, signal integrity, and connectivity applications.

The AP7330 belongs to Diodes' high-PSRR LDO product line, engineered specifically for noise-sensitive portable communication equipment where battery efficiency, small footprint, and rail stability are critical.

FAQ

What is the minimum input voltage required for 3.3V output at 300mA?

The AP7330-W5-7 requires VIN ≥ VOUT + dropout voltage. At VOUT = 3.3V and IOUT = 300mA, the max dropout is 0.24V (per datasheet Table 1), so minimum VIN is 3.54V. This ensures regulation across temperature and process variation while maintaining ±1% accuracy.

Can the ADJ pin be left unconnected for fixed-output operation?

No. The ADJ pin must be connected to a resistor divider between VOUT and GND to set output voltage. Leaving it open causes undefined regulation and potential instability. For fixed-output variants, Diodes offers the AP7331 series (e.g., AP7331-33W5-7), which integrates the feedback network internally.

Does AP7330-W5-7 include reverse-current protection?

No. The AP7330-W5-7 lacks integrated reverse-current blocking. When VIN < VOUT, current can flow backward from output to input through the pass transistor. External reverse-blocking diodes or MOSFETs are required in systems where backfeed must be prevented, such as multi-rail hot-swap designs.

How does thermal shutdown behave during continuous overload?

At junction temperature ≥ +150°C, the AP7330-W5-7 disables the pass element and enters thermal shutdown. It remains off until temperature falls by ≥20°C (hysteresis), then automatically resumes regulation. This prevents latch-up and enables self-recovery without external reset circuitry during intermittent overloads.