Diodes Incorporated AP7353D-30CV4-7

Overview

AP7353D-30CV4-7 from Diodes Incorporated is a 250mA low-dropout linear regulator with fixed 3.0V output, ±1% accuracy, 90dB PSRR at 1kHz, 10µV_rms output noise (10Hz–100kHz), and 18µA typical quiescent current. Packaged in X1-WLB0707-4 (Type A1) wafer-level BGA, it delivers stable power to RF circuitry and portable media subsystems where low noise and high rejection of supply ripple are critical.

For engineers reviewing the AP7353D-30CV4-7 datasheet, AP7353D-30CV4-7 pinout, AP7353D-30CV4-7 application, or AP7353D-30CV4-7 equivalent, key selection criteria include dropout voltage at 250mA (max 147mV), enable threshold compatibility (EN high ≥1.2V), thermal resistance (θ_JA = 150°C/W), and built-in auto-discharge functionality for rapid output discharge during shutdown.

Technical Context

The AP7353D integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown protection. Its architecture supports fast load transient response (<20µs recovery for 1mA→250mA step) and maintains regulation across input voltages from 2.0V to 5.5V while delivering up to 250mA output current.

Unlike non-discharge variants (AP7353), the 'D' suffix denotes integrated N-channel discharge FET (R_ON = 35Ω) that actively pulls the output to ground when EN is low-eliminating need for external bleed resistors in battery-sensitive applications. The device operates without requiring external compensation due to internal stability optimization for 1µF ceramic output capacitors.

Key Specifications

Pinout & Package

X1-WLB0707-4 (Type A1) is a 0.7mm × 0.7mm, 4-bump wafer-level chip-scale package with exposed die pad (EP) for thermal enhancement. PCB layout requires large copper area connected to GND under EP to achieve θ_JA = 150°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-3002E/MB and XC6210B302MR-G, AP7353D-30CV4-7 uniquely combines 250mA drive, 90dB PSRR, and integrated discharge in a 0.7mm² WLCSP-enabling compact, high-fidelity power delivery for RF and imaging subsystems where both noise and shutdown behavior are design-critical.

Availability

AP7353D-30CV4-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera module core supply, wearable sensor hub power, and Bluetooth LE audio codec applications requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.

Supply support for AP7353D-30CV4-7 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 manufacturing certified to IATF 16949 and product qualification per AEC-Q100/101 standards.

The AP7353 series belongs to Diodes' high-performance LDO portfolio designed specifically for noise-sensitive portable and wireless applications-emphasizing PSRR, low I_Q, and small-footprint packaging for space-constrained mobile designs.

FAQ

What is the maximum allowable input voltage for AP7353D-30CV4-7?

The absolute maximum input voltage is 6.0V, but recommended operating range is 2.0V to 5.5V. Exceeding 5.5V risks permanent damage per Absolute Maximum Ratings. For 3.0V output, minimum functional input is 3.068V (typical dropout), though operation down to 3.15V ensures margin across temperature and load.

Does AP7353D-30CV4-7 require an external discharge resistor?

No. The 'D' suffix indicates integrated auto-discharge functionality via a 35Ω N-channel FET between OUT and GND. When EN is pulled low, this FET actively sinks output capacitor charge-eliminating need for external bleed resistors and reducing shutdown residual voltage to <100mV within 100µs.

Can AP7353D-30CV4-7 operate with a 0.7µF output capacitor?

Yes-the device is stable with ≥0.7µF effective capacitance. However, Diodes recommends 1µF X7R/X5R ceramic capacitors placed adjacent to OUT/GND pins to ensure robustness across temperature, DC bias, and tolerance variations. Lower values risk instability under heavy load transients.

How does thermal performance differ between X1-WLB0707-4 and X2-DFN1010-4 packages?

X1-WLB0707-4 has θ_JA = 150°C/W; X2-DFN1010-4 is 237°C/W. The WLCSP's lower thermal resistance results from superior silicon-to-PCB conduction via its bump structure and larger EP area. In 250mA continuous operation, X1-WLB0707-4 runs ~13°C cooler on identical 2oz copper layouts.