Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated AP7315Q-29W5-7

Name: AP7315Q-29W5-7
Brand: Diodes Incorporated
SKU: AP7315Q-29W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AP7315Q-29W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315Q-29W5-7.pdf

Description:: IC REG LINEAR 2.9V 150MA SOT25

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,985

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AP7315Q-29W5-7 from Diodes Incorporated is an automotive-grade 150mA low-dropout linear regulator in SOT25 package, delivering fixed 2.9V output with ±1% accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, AEC-Q100 Grade 1 qualification, and is designed for noise-sensitive power rails in ADAS camera modules and infotainment subsystems.

For engineers reviewing the AP7315Q-29W5-7 datasheet, AP7315Q-29W5-7 pinout, AP7315Q-29W5-7 application, or AP7315Q-29W5-7 equivalent, this page provides verified technical context, validated pin functions, real-world automotive use cases, and confirmed alternative LDOs with documented functional differences.

Technical Context

The AP7315Q-29W5-7 uses a CMOS-based LDO architecture with internal voltage reference, error amplifier, and N-channel pass transistor. Its enable input (EN) directly controls gate biasing of the pass device, enabling hard shutdown with 0.01µA standby current and fast turn-on/turn-off response.

It achieves high PSRR (75dB @ 1kHz) through frequency-compensated feedback loop design and low-noise operation via optimized internal biasing and filtering-critical for powering RF receivers and image sensors where supply ripple directly impacts signal integrity.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.9V ±1% - ensures stable bias for 2.8V–3.0V logic and analog circuits without external feedback.
Max Output Current	150mA continuous - supports single-sensor or dual-peripheral loads in automotive ECUs.
PSRR	75dB at 1kHz - suppresses switching noise from upstream DC-DC converters feeding camera or RF ICs.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes jitter and SNR degradation in ADCs and RF front-ends.
Quiescent Current	35µA typical - enables always-on functionality in low-power wake-up domains without battery drain.
Dropout Voltage	0.22V @ 150mA (for VOUT = 2.9V) - allows operation down to VIN = 3.12V, compatible with degraded 3.3V bus conditions.
Operating Temp	−40°C to +125°C junction - meets under-hood and cabin temperature requirements per AEC-Q100 Grade 1.

Pinout & Package

SOT25 (5-pin) surface-mount package with matte tin-plated leads, moisture sensitivity level 1, and 0.016g mass. Pin 4 is NC (no connection); all other pins are electrically active and thermally coupled to the die.

Pin/Terminal	Circuit Role	Design Meaning
1 (VIN)	Input Power Supply	Accepts 1.7V–5.25V; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin for stability.
2 (GND)	Power Ground Reference	Low-impedance return path for input/output currents; must connect to solid ground plane to minimize noise coupling.
3 (EN)	Enable Control Input	Logic-level input: <0.5V disables regulator (0.01µA I_STANDBY), >1.3V enables; must not float.
4 (NC)	No Connection	Internally unconnected; PCB pad may be omitted or left unconnected per layout guidelines.
5 (VOUT)	Regulated Output	Delivers 2.9V ±1% at up to 150mA; requires local 0.47µF ceramic capacitor to maintain transient response and phase margin.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 Qualified	Validated for −40°C to +125°C operation in automotive environments, supporting PPAP documentation and IATF 16949 manufacturing.
High PSRR & Low Noise	75dB rejection at 1kHz and 60µV_rms broadband noise enable clean power for RF receivers and high-resolution image sensors.
Ultra-Low Quiescent Current	35µA typical operating current allows integration into always-on vehicle networks without compromising battery longevity.
Fast Enable Response	EN-controlled startup time <100µs ensures rapid system wake-up in ADAS domain controllers requiring sub-millisecond latency.
Short-Circuit Foldback Protection	Limits output current to ~55mA during VOUT-to-GND fault, preventing thermal runaway and enabling safe recovery in harsh environments.

Applications

Infotainment Power Supplies

Automotive RF Supply

Use Scenario: Powering audio DSPs, touchscreen controllers, and display drivers in head-unit systems.

IC Role / Device Role / Timing Role: Primary 2.9V LDO for noise-sensitive digital logic and mixed-signal interfaces.

Use Value: ±1% output accuracy maintains timing margins across temperature; 75dB PSRR prevents AM/FM interference from DC-DC switching artifacts.

Use Scenario: Supplying 2.9V bias to LTE/V2X transceivers and GNSS front-ends in telematics control units.

IC Role / Device Role / Timing Role: Clean post-regulator for RF ICs requiring ultra-low supply noise to preserve EVM and receiver sensitivity.

Use Value: 60µV_rms noise floor avoids reciprocal mixing; 35µA I_Q supports low-power cellular sleep modes.

Cameras

Automotive POL in ADAS

Use Scenario: Providing regulated 2.9V to CMOS image sensors and ISP power domains in surround-view and driver-monitoring cameras.

IC Role / Device Role / Timing Role: Local point-of-load regulator for sensor analog core and pixel array biasing.

Use Value: Low dropout (0.22V @ 150mA) sustains regulation during cold-crank 3.3V rail sag; AEC-Q100 qualification ensures reliability in vibration-prone mounting locations.

Use Scenario: Generating 2.9V for radar processor I/O banks and CAN FD transceiver VIO rails in ADAS domain controllers.

IC Role / Device Role / Timing Role: Secondary LDO supplying isolated logic voltage domains with independent enable control.

Use Value: EN pin allows synchronized power sequencing with main SoC; ±1% accuracy guarantees setup/hold timing compliance for high-speed serial interfaces.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7315Q-28W5-7	Fixed 2.8V output; otherwise identical electrical specs and pinout.	Used where host SoC or sensor specifies 2.8V nominal I/O voltage (e.g., certain MIPI CSI-2 image sensors).	Select when system-level voltage tolerance requires exact 2.8V rather than 2.9V; no layout or firmware changes needed.
TLD1123-1EP	300mA rated, 2.9V output, but higher 65µA I_Q, lower 65dB PSRR, and no EN pin.	Targeted at lighting drivers; lacks enable control and automotive-grade transient performance.	Only suitable if enable functionality is unused and PSRR/noise requirements are relaxed; not AEC-Q100 Grade 1 qualified.

Compared with AP7315Q-29W5-7, the -28W5-7 variant offers identical automotive robustness and noise performance at a different output voltage, while the TLD1123-1EP trades enable control and PSRR for higher current capability-making it unsuitable for noise-critical ADAS or infotainment rails.

Availability

AP7315Q-29W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, RF communication subsystems, and telematics control units requiring stable component supply with full AEC-Q100 traceability.

Supply support for AP7315Q-29W5-7 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 devices, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q200 standards.

The AP7315Q series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and body electronics where PSRR, low noise, and AEC-Q100 compliance are mandatory.

FAQ

What is the minimum input voltage required for AP7315Q-29W5-7 to regulate 2.9V at 150mA?

The dropout voltage is 0.22V maximum at 150mA for VOUT = 2.9V, so VIN must be ≥3.12V to maintain regulation. At lighter loads, dropout decreases-for example, 0.15V at 50mA-allowing operation down to 3.05V. This ensures compatibility with automotive 3.3V rails under cold-crank or load-dump conditions.

Does AP7315Q-29W5-7 include output discharge functionality?

No. The "Q" suffix (as in AP7315Q-29W5-7) denotes the non-discharge variant. Output discharge is only present in the AP7315DQ-29W5-7 version, which integrates an internal NMOS switch between VOUT and GND activated during shutdown. This part relies on external circuitry or natural load decay for VOUT discharge.

Can AP7315Q-29W5-7 be used in non-automotive applications?

Yes-its electrical specifications (1.7V–5.25V input, 150mA output, 75dB PSRR) are fully functional outside automotive contexts. However, the AEC-Q100 qualification, PPAP support, and IATF 16949 manufacturing are specific to automotive use; commercial alternatives like AP7315-29W5-7 may be more cost-effective for industrial or consumer designs.

What is the recommended input and output capacitor configuration for AP7315Q-29W5-7?

A minimum 0.47µF X5R/X7R ceramic capacitor is required between VIN and GND, and another 0.47µF ceramic capacitor between VOUT and GND. Both must be placed within 2mm of their respective pins. For high-transient loads, add a 10µF low-ESR tantalum or polymer capacitor in parallel with the output ceramic to improve load-step response without compromising stability.

AP7315Q-29W5-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.25V

Voltage - Output (Min/Fixed):: 2.9V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.29V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 60 µA

Current - Supply (Max):: 100 µA

PSRR:: 75dB (1kHz)

Control Features:: Enable

Protection Features:: Over Current, Short Circuit

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

AP7315Q-29W5-7 FAQ

1.How can I place an order for AP7315Q-29W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315Q-29W5-7 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 AP7315Q-29W5-7 reliable?

The price and inventory of AP7315Q-29W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315Q-29W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315Q-29W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315Q-29W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315Q-29W5-7?

AP7315Q-29W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315Q-29W5-7 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 AP7315Q-29W5-7?

For technical support, including AP7315Q-29W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315Q-29W5-7 requirements.

6.How does Aetrix verify that AP7315Q-29W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315Q-29W5-7 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 AP7315Q-29W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315Q-29W5-7?

All AP7315Q-29W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315Q-29W5-7, 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 AP7315Q-29W5-7 part is unused and in its original packaging.

Return procedure for AP7315Q-29W5-7:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…