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

Diodes Incorporated AP7315Q-28W5-7

Name: AP7315Q-28W5-7
Brand: Diodes Incorporated
SKU: AP7315Q-28W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315Q-28W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315Q-28W5-7.pdf

Description:: IC REG LINEAR 2.8V 150MA SOT25

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7315Q-28W5-7 from Diodes Incorporated is an automotive-grade 150mA low-dropout linear regulator with fixed 2.8V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, operates from 1.7V to 5.25V input, and is qualified to AEC-Q100 Grade 1 for infotainment power supplies and ADAS point-of-load applications.

For engineers reviewing the AP7315Q-28W5-7 datasheet, AP7315Q-28W5-7 pinout, AP7315Q-28W5-7 application, or AP7315Q-28W5-7 equivalent, key selection criteria include dropout voltage (210mV typical at 150mA), thermal resistance (179°C/W), EN logic thresholds (0.5V max low, 1.3V min high), and SOT25 package compatibility with automotive PCB layout constraints.

Technical Context

The AP7315Q-28W5-7 uses a CMOS-based LDO architecture with internal voltage reference and error amplifier driving an N-channel pass transistor. Its enable circuitry provides clean turn-on/turn-off control without floating-state risk, and its fold-back short-circuit protection limits output current to ~55mA during VOUT-to-GND faults.

Designed for noise-sensitive automotive domains, it delivers stable 2.8V regulation across -40°C to +125°C ambient, maintains 0.5% load regulation up to 150mA, and achieves 0.02%/V line regulation - enabling reliable operation in battery-supplied systems with wide VIN transients.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.8V ±1% - ensures precise biasing for 2.8V logic rails and RF ICs without external feedback.
Max Output Current	150mA continuous - supports moderate-power sensors, camera modules, and microcontroller I/O peripherals.
PSRR	75dB at 1kHz - suppresses ripple from noisy switching supplies feeding downstream analog/RF circuits.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise in VCOs and jitter in high-speed serial links.
Quiescent Current	35µA typical - enables always-on functionality in low-power automotive wake-up circuits.
Dropout Voltage	210mV typical at 150mA - allows operation down to 3.01V input while maintaining 2.8V output, critical for cold-crank scenarios.
Operating Temp	-40°C to +125°C - meets under-hood and cabin temperature requirements per AEC-Q100 Grade 1.

Pinout & Package

SOT25 (5-pin small-outline transistor) 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 require proper PCB layout per Diodes' recommended pad dimensions.

Pin/Terminal	Circuit Role	Design Meaning
1 (VIN)	Power Input	Accepts 1.7V–5.25V unregulated supply; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin.
2 (GND)	Ground Reference	Primary return path for input/output current; must connect directly to low-impedance ground plane to minimize noise coupling.
3 (EN)	Enable Control	Active-high digital input (0–0.5V = off, 1.3–5.25V = on); must not float and requires clean logic-level drive.
4 (NC)	No Connection	Internally unconnected; PCB pad may be omitted or left unconnected per layout guidelines.
5 (VOUT)	Regulated Output	Delivers stable 2.8V ±1%; requires low-ESR ceramic output capacitor placed within 2mm of pin and GND.

Key Features

Feature	Design Value
High PSRR	75dB at 1kHz enables use after buck converters without additional filtering stages.
Low Noise	60µV_rms output noise preserves signal integrity in RF front-ends and precision ADC references.
Ultra-Low IQ	35µA quiescent current extends battery life in always-on automotive modules like door controllers.
AEC-Q100 Grade 1	Qualified for automotive use up to +125°C ambient, supporting PPAP documentation and IATF 16949 manufacturing.
Fast Transient Response	Stable under 1mA ↔ 150mA load steps with <100µs recovery time, critical for burst-mode sensor operation.

Applications

Infotainment Power Supply

ADAS Camera Module

Use Scenario: Powers audio DSPs, display drivers, and touch controllers in head-unit systems with variable battery voltage.

IC Role / Device Role / Timing Role: Primary 2.8V LDO supplying core logic voltage for multimedia SoCs and interface bridges.

Use Value: High PSRR rejects ripple from shared 5V buck converter, preventing audible noise in Class-D amplifiers.

Use Scenario: Supplies image sensor and ISP in forward-facing ADAS cameras exposed to engine bay temperatures.

IC Role / Device Role / Timing Role: Point-of-load regulator delivering clean 2.8V to CIS pixel array and analog front-end.

Use Value: Low 60µV_rms noise prevents fixed-pattern noise in captured video frames under low-light conditions.

Automotive RF Supply

Wireless Communication Module

Use Scenario: Provides regulated bias to VCOs, LNAs, and PA drivers in telematics and GNSS receivers.

IC Role / Device Role / Timing Role: Low-noise voltage source for RF signal chain components requiring stable DC operating points.

Use Value: 75dB PSRR at 1kHz suppresses switching noise from nearby PMICs, reducing phase noise and improving EVM.

Use Scenario: Powers Bluetooth/Wi-Fi SoCs in connected car gateways where low standby power is mandatory.

IC Role / Device Role / Timing Role: Enable-controlled LDO managing power state transitions for wireless subsystems.

Use Value: 35µA quiescent current and fast EN response (<10µs) enable rapid wake-from-sleep without voltage droop.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7315DQ-28W5-7	Includes integrated output discharge (30Ω NMOS) to rapidly pull VOUT to GND when disabled; otherwise identical electrical specs.	Required where fast VOUT decay prevents latch-up in downstream logic during power sequencing.	Select if system demands controlled discharge; otherwise AP7315Q-28W5-7 reduces BOM count by eliminating external discharge resistor.
TLV73328PDBVR	Lower IQ (25µA), higher PSRR (80dB @ 1kHz), but only AEC-Q200 qualified (not AEC-Q100 Grade 1).	Acceptable for non-safety-critical cabin modules but insufficient for PPAP-driven ADAS or powertrain designs.	Choose only for cost-sensitive non-PPAP applications; AP7315Q-28W5-7 remains preferred for full automotive compliance.

Compared with AP7315DQ-28W5-7, the AP7315Q-28W5-7 eliminates discharge circuitry to reduce leakage and simplify layout; versus TLV73328PDBVR, it trades minor PSRR/IQ gains for mandatory AEC-Q100 Grade 1 qualification and PPAP support required in production automotive programs.

Availability

AP7315Q-28W5-7 is available at Aetrix Electronics and suitable for infotainment power supplies, ADAS camera modules, automotive RF supplies, and wireless communication modules requiring stable component supply across automotive production lifecycles.

Supply support for AP7315Q-28W5-7 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 automotive, industrial, computing, and consumer markets.

The AP7315Q series belongs to Diodes' automotive-qualified LDO portfolio, designed specifically to meet stringent AEC-Q100 reliability, thermal, and ESD requirements in safety-critical vehicle subsystems.

FAQ

What is the minimum input voltage required for AP7315Q-28W5-7 to maintain regulation?

The AP7315Q-28W5-7 requires VIN ≥ VOUT + dropout voltage. With 2.8V output and typical dropout of 210mV at 150mA, minimum VIN is 3.01V. At light loads (<1mA), dropout drops to ~150mV, allowing operation down to 2.95V. Absolute minimum VIN per datasheet is 1.7V, but regulation is not guaranteed below VOUT + dropout.

Does AP7315Q-28W5-7 require an external output capacitor, and what type is recommended?

Yes - a minimum 0.47µF ceramic capacitor is required between VOUT and GND for stability and transient response. X5R or X7R dielectrics are recommended due to stable capacitance over temperature and bias. The capacitor must be placed within 2mm of the VOUT and GND pins, with low-inductance layout to prevent oscillation under dynamic load steps.

How does the EN pin behave during power-up, and what happens if left unconnected?

The EN pin must never float: an unconnected EN pin causes undefined behavior and potential malfunction. If unused, tie EN directly to VIN to ensure permanent enable. The pin has no internal pull-up/down; logic thresholds are 0–0.5V (disable) and 1.3–5.25V (enable), with ±1.0µA leakage ensuring robust noise immunity in automotive environments.

Is AP7315Q-28W5-7 compatible with lead-free reflow soldering processes?

Yes - AP7315Q-28W5-7 is fully RoHS-compliant, lead-free, halogen-free, and antimony-free per J-STD-020 Level 1 moisture sensitivity. It supports standard Pb-free reflow profiles (peak 260°C), with matte tin-plated leads rated for solderability per MIL-STD-202 Method 208. No special pre-bake is required before assembly.

AP7315Q-28W5-7 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):: 2.8V

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-28W5-7 FAQ

1.How can I place an order for AP7315Q-28W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315Q-28W5-7 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-28W5-7 reliable?

The price and inventory of AP7315Q-28W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315Q-28W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315Q-28W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315Q-28W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315Q-28W5-7?

AP7315Q-28W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315Q-28W5-7 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-28W5-7?

For technical support, including AP7315Q-28W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315Q-28W5-7 requirements.

6.How does Aetrix verify that AP7315Q-28W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315Q-28W5-7 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-28W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315Q-28W5-7?

All AP7315Q-28W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315Q-28W5-7, 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-28W5-7 part is unused and in its original packaging.

Return procedure for AP7315Q-28W5-7:

1.Submit a request within 90 days.

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

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