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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7353-32CV4-7

Name: AP7353-32CV4-7
Brand: Diodes Incorporated
SKU: AP7353-32CV4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7353-32CV4-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 4-XFBGA, WLBGA

Datasheet:: AP7353-32CV4-7.pdf

Description:: LDO CMOS LOWCURR X1-WLB0707-4 T&

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7353-32CV4-7 from Diodes Incorporated is a 250mA low-dropout linear regulator with fixed 3.2V output, ±1% accuracy, 90dB PSRR at 1kHz, 10µV_rms output noise (10Hz–100kHz), and 18µA typical quiescent current. It features enable control, thermal shutdown, and short-circuit protection, and is optimized for RF supply rails and battery-powered portable electronics.

For engineers reviewing the AP7353-32CV4-7 datasheet, AP7353-32CV4-7 pinout, AP7353-32CV4-7 application, or AP7353-32CV4-7 equivalent, key selection criteria include dropout voltage at 250mA (67mV typ. @3.2V), package thermal resistance (150°C/W for X1-WLB0707-4), EN logic thresholds (0.4V max low, 1.2V min high), and stability with 1µF ceramic output capacitance.

Technical Context

The AP7353-32CV4-7 employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its non-discharge configuration avoids automatic output discharge during shutdown, preserving downstream capacitor charge.

It delivers fast load transient response (20µs settling time for 1mA→250mA step) and maintains regulation across –40°C to +85°C ambient, with dropout voltage tightly specified per output voltage grade (e.g., 67mV typ. at 3.2V/250mA for X1-WLB0707-4).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.2V ±1% - ensures stable bias for 3.3V-tolerant I/O or core logic without external feedback network.
Max Output Current	250mA - supports moderate-power subsystems such as camera ISPs or Bluetooth SoCs without thermal derating in X1-WLB0707-4 package.
PSRR	90dB @1kHz, 70dB @10kHz - suppresses switching noise from DC-DC converters feeding its input, critical for RF front-end power integrity.
Output Noise	10µV_rms (10Hz–100kHz) - minimizes phase noise injection into VCOs or ADC reference supplies in sensitive analog signal chains.
Quiescent Current	18µA typ. - extends battery life in always-on wearable sensors or IoT edge nodes operating in low-duty-cycle sleep modes.
Dropout Voltage	67mV typ. @3.2V/250mA (X1-WLB0707-4) - enables operation from single-cell Li-ion (3.0V min) while maintaining full output regulation under load.
Enable Threshold	V_EN(H) ≥1.2V, V_EN(L) ≤0.4V - compatible with 1.8V/3.3V GPIOs without level-shifting; prevents false turn-on from floating inputs.

Pinout & Package

X1-WLB0707-4 (Type A1) is a 0.7mm × 0.7mm wafer-level chip-scale package with 4 solder bumps and an exposed thermal pad (EP). Its ultra-compact footprint supports high-density portable PCB layouts while enabling efficient heat dissipation via direct copper attachment to ground plane.

Pin/Terminal	Circuit Role	Design Meaning
IN (Pin 1)	Power Input	Accepts 2.0V–5.5V input; requires local 1µF ceramic decoupling placed adjacent to minimize impedance and prevent instability during load transients.
EN (Pin 2)	Enable Control	Active-high digital input; must be driven to ≥1.2V to enable regulation or ≤0.4V to enter 0.1µA standby mode-never left floating.
GND (Pin 3)	Ground Reference	Primary return path for input/output current and internal circuitry; connects directly to PCB ground plane for low-noise operation and thermal conduction.
OUT (Pin 4)	Regulated Output	Delivers 3.2V ±1% at up to 250mA; requires 1µF X7R/X5R ceramic capacitor within 2mm of pin for stability and transient response.
EP	Thermal Pad	Exposed bottom-side copper area; must be connected to large GND copper pour to achieve θ_JA = 150°C/W and sustain full-load operation at +85°C ambient.

Key Features

Feature	Design Value
High PSRR at RF frequencies	70dB @10kHz ensures clean power delivery to 2.4GHz Wi-Fi/BT radios despite noisy shared PMIC input rails.
Ultra-low output noise	10µV_rms eliminates measurable contribution to SNR degradation in 16-bit audio codecs or precision ADC references.
Low-quiescent-current shutdown	0.1µA standby current enables multi-year battery life in coin-cell-powered BLE beacons or environmental sensors.
Fast load transient response	20µs recovery from 1mA→250mA step prevents brownout in burst-mode processors or image sensor frame capture circuits.
Robust protection suite	Integrated thermal shutdown and 350mA short-circuit current limit prevent damage during board-level fault conditions or ESD events.

Applications

Smartphone Camera Module

Wireless Audio Transceiver

Use Scenario: Powering CIS image sensor analog front-end and ISP core logic during active capture.

IC Role / Device Role / Timing Role: Primary 3.2V LDO supplying noise-sensitive analog pixel array and timing-critical digital processing block.

Use Value: 10µV_rms noise prevents fixed-pattern noise in raw image data; 90dB PSRR rejects coupling from baseband processor switching.

Use Scenario: Regulating power for Bluetooth LE audio codec and RF PA bias in true wireless stereo earbuds.

IC Role / Device Role / Timing Role: Dedicated low-noise 3.2V rail isolating RF section from noisy digital SoC domain.

Use Value: 70dB PSRR at 10kHz suppresses interference from 32kHz RTC clock harmonics and digital switching noise.

Portable Medical Sensor Hub

Wearable Fitness Tracker

Use Scenario: Supplying ECG/PPG analog signal chain and low-power MCU in compact clinical-grade wearable.

IC Role / Device Role / Timing Role: Precision 3.2V reference source for 24-bit delta-sigma ADC and sensor excitation circuitry.

Use Value: ±1% output accuracy ensures consistent gain calibration across temperature; 18µA IQ extends 7-day battery runtime.

Use Scenario: Providing regulated 3.2V to accelerometer, gyroscope, and BLE radio in wrist-worn activity monitor.

IC Role / Device Role / Timing Role: Always-on LDO enabling rapid wake-from-sleep response while minimizing average system current draw.

Use Value: 0.1µA shutdown current reduces leakage during 95%+ sleep duty cycle; 20µs transient response prevents sensor data loss on wake-up.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, enable-controlled LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-3202E/MB	Higher dropout (280mV @250mA), lower PSRR (65dB @1kHz), 2.5µA IQ	Lacks fast transient response and RF-grade PSRR; suitable only for non-RF, low-current applications	Select when ultra-low IQ dominates over noise/PSRR requirements and thermal budget allows higher dropout.
Torex XC6210B322MR-G	Same 3.2V output, 150mA rating, 25µA IQ, 75dB PSRR @1kHz	Lower current capability limits use in multi-sensor hubs or dual-radio designs requiring >200mA peak	Choose for space-constrained designs where 150mA suffices and Torex's smaller DFN1006-4 package is preferred.

Compared with MCP1703T-3202E/MB and XC6210B322MR-G, the AP7353-32CV4-7 uniquely balances 250mA drive, 90dB PSRR, and 10µV_rms noise in a 0.7mm² package-making it the only option qualified for simultaneous RF supply and precision analog use in modern wearables.

Availability

AP7353-32CV4-7 is available at Aetrix Electronics and suitable for smartphone camera modules, wireless audio transceivers, and portable medical sensor hubs requiring stable component supply, long-term manufacturability, and RoHS-compliant green packaging.

Supply support for AP7353-32CV4-7 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The AP7353 belongs to Diodes' high-performance LDO family designed specifically for noise-sensitive portable electronics-including smartphones, wearables, and IoT endpoints-where PSRR, output noise, and quiescent current are critical system-level constraints.

FAQ

What is the maximum allowable input voltage for AP7353-32CV4-7?

The absolute maximum input voltage is 6.0V, but recommended operating range is 2.0V to 5.5V. Exceeding 5.5V risks permanent damage even briefly, and operation above 5.5V voids parametric guarantees including PSRR and dropout performance. For 3.2V output, VIN ≥ 4.2V ensures margin against dropout under worst-case load and temperature.

Does AP7353-32CV4-7 include output discharge functionality?

No-AP7353-32CV4-7 is the non-discharge variant (indicated by absence of "D" in part number). When disabled via EN pin, the output remains floating and retains charge on downstream capacitors. For automatic discharge, select AP7353D-32CV4-7, which integrates a 35Ω NMOS switch between OUT and GND.

Can AP7353-32CV4-7 operate with less than 1µF output capacitance?

The minimum effective capacitance is 0.7µF after accounting for temperature, DC bias, and tolerance derating-but using <1µF increases risk of oscillation or poor transient response. Diodes specifies 1µF X7R/X5R ceramic as the design-validated value; reducing below this requires full stability testing per application conditions.

Is the X1-WLB0707-4 package lead-free and RoHS compliant?

Yes-AP7353-32CV4-7 uses a fully lead-free, RoHS 3 (2015/863/EU) compliant construction with tin-silver-copper (SnAgCu) bump finish. It is also halogen- and antimony-free (<900ppm Br+Cl, <1000ppm Sb), meeting Diodes' "Green" device definition per their quality documentation.

AP7353-32CV4-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 4-XFBGA, WLBGA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 3.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.142V @ 250mA

Current - Output:: 250mA

Current - Quiescent (Iq):: 27 µA

Current - Supply (Max):: -

PSRR:: 90dB ~ 70dB (100Hz ~ 10kHz)

Control Features:: Current Limit, Enable

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: X1-WLB0707-4 (Type A1)

AP7353-32CV4-7 FAQ

1.How can I place an order for AP7353-32CV4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7353-32CV4-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AP7353-32CV4-7 reliable?

The price and inventory of AP7353-32CV4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7353-32CV4-7 is usually 5 days.

3.What payment methods are accepted for AP7353-32CV4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7353-32CV4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7353-32CV4-7?

AP7353-32CV4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7353-32CV4-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AP7353-32CV4-7?

For technical support, including AP7353-32CV4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7353-32CV4-7 requirements.

6.How does Aetrix verify that AP7353-32CV4-7 is sourced from the original manufacturer or authorized distributors?

All AP7353-32CV4-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP7353-32CV4-7 meets industry standards.

7.What is the process for return or replacement of AP7353-32CV4-7?

All AP7353-32CV4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7353-32CV4-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AP7353-32CV4-7 part is unused and in its original packaging.

Return procedure for AP7353-32CV4-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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