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

Diodes Incorporated AP7353-29CV4-7

Name: AP7353-29CV4-7
Brand: Diodes Incorporated
SKU: AP7353-29CV4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7353-29CV4-7

Manufacturer:: Diodes Incorporated

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

Package:: 4-XFBGA, WLBGA

Datasheet:: AP7353-29CV4-7.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7353-29CV4-7 from Diodes Incorporated is a 250mA low-dropout linear regulator with fixed 2.9V 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 in compact portable electronics.

For engineers reviewing the AP7353-29CV4-7 datasheet, AP7353-29CV4-7 pinout, AP7353-29CV4-7 application, or AP7353-29CV4-7 equivalent, key selection criteria include dropout voltage at 250mA (71mV typ. @ V_OUT=2.9V), 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 AP7353-29CV4-7 employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its fixed 2.9V output is set by an internal resistor network, eliminating external feedback components.

It delivers fast load transient response (<20µs settling for 1mA→250mA step) and high power supply rejection (70dB at 10kHz, 250mA load), enabled by low-output-impedance design and optimized internal compensation for 1µF ceramic capacitors.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.9V ±1% - eliminates need for external resistive divider; ensures stable core/IO rail for 3.0V-tolerant logic.
Max Output Current	250mA - supports moderate-power RF ICs, camera modules, and baseband processors without external pass devices.
PSRR	90dB @ 1kHz, 10mA - suppresses switching noise from PMICs or DC-DC converters feeding noisy input rails.
Output Noise	10µV_rms (10Hz–100kHz) - preserves SNR in analog front-ends, ADC references, and RF synthesizer supplies.
Quiescent Current	18µA typ. - extends battery life in always-on sensor nodes and wearable standby modes.
Dropout Voltage	71mV typ. @ 250mA - enables operation down to VIN = 2.97V, critical for single-cell Li-ion (3.0V min) and coin-cell applications.
Enable Threshold	V_IL ≤ 0.4V, V_IH ≥ 1.2V - compatible with 1.8V/3.3V GPIOs without level-shifting.

Pinout & Package

AP7353-29CV4-7 is packaged in the X1-WLB0707-4 (Type A1) wafer-level chip-scale package (0.7mm × 0.7mm, 0.4mm height), featuring a 4-bump layout with exposed thermal pad (EP) for enhanced heat dissipation. PCB layout requires large copper area under EP connected to GND.

Pin/Terminal	Circuit Role	Design Meaning
IN (Bump 1)	Power Input	Accepts 2.0V–5.5V input; requires local 1µF ceramic decoupling capacitor placed adjacent to minimize trace inductance.
EN (Bump 2)	Enable Control	Active-high digital input; must be driven to avoid floating; ties to IN for always-on operation.
GND (Bump 3)	Ground Reference	Primary return path for input/output current; connects directly to system ground plane and EP thermal pad.
OUT (Bump 4)	Regulated Output	Delivers 2.9V ±1%; requires 1µF X7R/X5R ceramic capacitor within 2mm of OUT/GND pins for stability.
EP	Thermal Pad	Non-electrical thermal interface; must be soldered to ≥4mm² GND copper pour for θ_JA = 150°C/W performance.

Key Features

Feature	Design Value
High PSRR at RF frequencies	70dB @ 10kHz, 250mA - maintains clean supply under dynamic load conditions typical in LTE/Wi-Fi transceivers.
Ultra-low output noise	10µV_rms (10Hz–100kHz) - avoids phase noise degradation in VCOs and jitter accumulation in high-speed serial links.
Fast load transient response	<20µs settling time for 1mA→250mA step - prevents brownout during burst-mode transmission in Bluetooth/Wireless MCU systems.
Low-quiescent-current shutdown	0.1µA standby current - enables microamp-level system sleep states without compromising wake-up latency.
Integrated short-circuit protection	Clamps output current to ~350mA - prevents thermal runaway during board-level faults without external current-sense circuitry.

Applications

RF Power Amplifier Supply

Camera Sensor Core Rail

Use Scenario: Providing clean bias to 2.4GHz Wi-Fi PA in smartphone front-end module.

IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO delivering stable 2.9V to PA drain node.

Use Value: 10µV_rms noise and 90dB PSRR prevent AM-to-PM distortion and EVM degradation under switching load transients.

Use Scenario: Powering image sensor analog core in compact action camera.

IC Role / Device Role / Timing Role: Fixed-output LDO supplying 2.9V to CIS pixel array and column ADC.

Use Value: ±1% accuracy and 71mV dropout ensure consistent exposure gain and dark current stability across battery discharge.

Wearable BLE SoC I/O Rail

Portable Media Player Audio Codec

Use Scenario: Generating 2.9V I/O supply for Bluetooth 5.3 SoC in hearable device.

IC Role / Device Role / Timing Role: Enable-controlled LDO powering GPIOs and peripheral interfaces.

Use Value: 18µA quiescent current and 0.1µA shutdown current extend 120-hour battery life in always-connected mode.

Use Scenario: Supplying DAC and headphone amplifier in flash-based MP3 player.

IC Role / Device Role / Timing Role: Low-noise LDO isolating audio stage from noisy system DC-DC converter.

Use Value: 10µV_rms noise floor preserves >105dB SNR in 24-bit audio playback without additional filtering.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7361-29YG-7	Same manufacturer, 300mA rating, higher 250mV dropout at 250mA, DFN1010-4 package (θ_JA = 237°C/W).	Lower thermal performance limits continuous 250mA operation in confined spaces without airflow.	Select when footprint compatibility with DFN1010-4 is required and peak load duration is short.
Torex XC6210B292MR-G	200mA output, 1.2V–6.0V input, 25µA IQ, 1.5% VOUT accuracy, SOT-25 package.	Larger SOT-25 footprint (2.9mm × 2.8mm) and lower current limit reduce suitability for space-constrained RF modules.	Choose for cost-sensitive designs where 200mA headroom suffices and thermal constraints are relaxed.

Compared with AP7353-29CV4-7, AP7361-29YG-7 trades higher current capability for reduced thermal efficiency in ultra-compact layouts, while XC6210B292MR-G offers broader input range but sacrifices 50mA output capacity and 0.5% accuracy-critical for precision analog rails.

Availability

AP7353-29CV4-7 is available at Aetrix Electronics and suitable for RF power amplifier supplies, camera sensor core rails, wearable BLE SoC I/O rails, and portable media player audio codecs requiring stable component supply, tight voltage tolerance, and low-noise operation.

Supply support for AP7353-29CV4-7 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 definitions aligned to AEC-Q200 for automotive-grade reliability.

The AP7353 belongs to Diodes' high-performance LDO family designed specifically for noise-sensitive portable and wireless applications demanding ultra-low IQ, high PSRR, and minimal footprint.

FAQ

What is the minimum input voltage required for AP7353-29CV4-7 to maintain regulation at 250mA?

The typical dropout voltage is 71mV at 250mA and 2.9V output, so minimum input is 2.971V. The absolute minimum specified input is 2.0V, but regulation is only guaranteed above V_OUT + V_DROP. At -40°C, worst-case dropout rises to 150mV, requiring VIN ≥ 3.05V for full 250mA operation across temperature.

Can AP7353-29CV4-7 operate with a 0.7µF output capacitor?

Yes-the datasheet specifies 0.7µF as the minimum effective capacitance accounting for temperature, DC bias, and tolerance derating. However, 1µF X7R/X5R is recommended for robust stability margin and optimal transient response across all operating conditions.

Is the exposed pad (EP) electrically connected to GND internally?

No-the EP is a thermal pad only, not an electrical terminal. It must be soldered to a GND copper pour for thermal performance, but it serves no circuit function and should not be used as a GND connection point in the schematic netlist.

Does AP7353-29CV4-7 include reverse current protection?

No-the AP7353-29CV4-7 lacks internal reverse current blocking. If the output voltage exceeds the input (e.g., during hot-swap or backup battery scenarios), current can flow backward from OUT to IN. An external Schottky diode in series with IN is required for reverse polarity or backfeed protection.

AP7353-29CV4-7 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):: 2.9V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.15V @ 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)

AP7353-29CV4-7 FAQ

1.How can I place an order for AP7353-29CV4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7353-29CV4-7 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 AP7353-29CV4-7 reliable?

The price and inventory of AP7353-29CV4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7353-29CV4-7 is usually 5 days.

3.What payment methods are accepted for AP7353-29CV4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7353-29CV4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7353-29CV4-7?

AP7353-29CV4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7353-29CV4-7 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 AP7353-29CV4-7?

For technical support, including AP7353-29CV4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7353-29CV4-7 requirements.

6.How does Aetrix verify that AP7353-29CV4-7 is sourced from the original manufacturer or authorized distributors?

All AP7353-29CV4-7 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 AP7353-29CV4-7 meets industry standards.

7.What is the process for return or replacement of AP7353-29CV4-7?

All AP7353-29CV4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7353-29CV4-7, 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 AP7353-29CV4-7 part is unused and in its original packaging.

Return procedure for AP7353-29CV4-7:

1.Submit a request within 90 days.

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

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