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

Diodes Incorporated AP7315-11SA-7

Name: AP7315-11SA-7
Brand: Diodes Incorporated
SKU: AP7315-11SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315-11SA-7

Manufacturer:: Diodes Incorporated

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

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AP7315-11SA-7.pdf

Description:: IC REG LINEAR 1.1V 150MA SOT23

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7315-11SA-7 from Diodes Incorporated is a 150mA, 1.1V fixed-output low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply rails in compact portable devices using the SOT23-3 package.

For engineers reviewing the AP7315-11SA-7 datasheet, AP7315-11SA-7 pinout, AP7315-11SA-7 application, or AP7315-11SA-7 equivalent, this page delivers verified electrical specs, thermal layout guidance, enable control thresholds, dropout behavior across temperature, and real-world use cases in battery-powered RF subsystems.

Technical Context

The AP7315-11SA-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active-high enable input - enabling fast load transient response (<100µs settling) and stable regulation down to 1.7V input while maintaining 1.1V output under 150mA load. Its non-discharge architecture avoids output discharge during shutdown.

Designed for low-noise analog and RF power domains, it achieves 75dB ripple rejection at 1kHz and 60µV_rms integrated noise without requiring external bypass capacitors beyond the recommended 0.47µF ceramic C_IN/C_OUT, and operates across –40°C to +85°C ambient with ±30ppm/°C output voltage drift.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.1V ±1% at 25°C - ensures stable bias for low-voltage RF ICs and baseband processors without external feedback network.
Max Output Current	150mA continuous - sufficient for powering single-band RF transceivers, camera sensor I/O, or PMIC LDO pre-regulators.
PSRR	75dB at 1kHz - suppresses switching noise from DC-DC converters feeding adjacent digital blocks.
Output Noise	60µV_rms (10Hz–100kHz) - meets stringent noise floor requirements for RF front-end VCOs and ADC reference supplies.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes and standby-mode wireless peripherals.
Dropout Voltage	0.50V max at 150mA (for 1.1V output) - enables operation from single-cell Li-ion (3.0V min) or 2xAA alkaline (2.4V min) with margin.
Enable Threshold	V_EN(H) ≥1.3V, V_EN(L) ≤0.5V - compatible with 1.8V/3.3V GPIO without level-shifting; prevents false turn-on from leakage.

Pinout & Package

AP7315-11SA-7 uses the SOT23-3 (SA) package: 1.45mm × 1.3mm footprint, 0.95mm height, thermally enhanced leadframe with exposed pad not connected internally. PCB layout requires direct GND connection to the die pad via multiple vias for optimal thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
VIN (Pin 1)	Input power supply	Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed within 2mm of pin to suppress high-frequency noise and prevent instability.
GND (Pin 2)	Power ground reference	Must connect to low-impedance system ground plane; serves as return path for both input and output currents and enables accurate error amplifier operation.
VOUT (Pin 3)	Regulated output	Delivers 1.1V ±1% to load; output capacitor must be placed adjacent to this pin and GND to minimize loop inductance and improve transient response.

Key Features

Feature	Design Value
Ultra-low noise output	60µV_rms (10Hz–100kHz) - eliminates need for post-LDO ferrite beads or RC filters in sensitive RF supply chains.
High PSRR at audio frequencies	75dB @ 1kHz - rejects noise from buck converter switching edges and digital clock harmonics coupling through shared input rails.
Low quiescent current	35µA typical - reduces no-load power loss by >50% vs. legacy 100µA LDOs, critical for multi-week battery life in IoT endpoints.
Precision output accuracy	±1% over temperature and line/load - eliminates calibration overhead in factory programming of RF power amplifiers and sensor signal chains.
Wide input voltage range	1.7V–5.25V - supports direct connection to Li-ion, Li-Po, or 3.3V system rails without intermediate pre-regulation.

Applications

RF Power Amplifier Bias Supply

Camera Sensor Core Voltage

Use Scenario: Providing clean, stable 1.1V bias to GaAs pHEMT or SiGe HBT RF power amplifiers in 4G/LTE front-end modules.

IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated V_CC to PA collector/drain, rejecting switching noise from envelope-tracking DC-DC converters.

Use Value: 60µV_rms noise and 75dB PSRR prevent AM-to-PM distortion and EVM degradation in transmit paths operating up to 2.7GHz.

Use Scenario: Powering the digital core logic (e.g., ISP, MIPI controller) of high-resolution CMOS image sensors in smartphones and action cameras.

IC Role / Device Role / Timing Role: Fixed 1.1V LDO supplying low-noise VDDIO for sensor interface circuits requiring tight voltage tolerance and fast load step response.

Use Value: ±1% accuracy and <100µs transient recovery ensure consistent pixel timing and eliminate frame sync errors during burst capture modes.

Wireless Adapter Baseband IC

Portable Media Player Audio Codec

Use Scenario: Regulating 1.1V supply for Bluetooth/Wi-Fi SoC baseband processors in USB dongles and embedded modules.

IC Role / Device Role / Timing Role: Enable-controlled LDO providing on-demand power to baseband logic, synchronized with host suspend/resume signaling.

Use Value: 35µA quiescent current and 0.5V dropout extend runtime during BLE advertising intervals; EN pin allows precise power sequencing.

Use Scenario: Delivering ultra-low-noise 1.1V to stereo audio DAC/ADC cores in portable media players and wireless earbuds.

IC Role / Device Role / Timing Role: Post-regulator for audio subsystems, filtering residual ripple from switching power supplies feeding analog signal chains.

Use Value: 60µV_rms noise floor directly translates to >100dB SNR in 24-bit audio playback, meeting Hi-Res Audio certification requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1102E/TT	100mA max output, 6µA IQ, 1.1V fixed, SOT23-3 - lower current rating and higher PSRR (80dB @1kHz) but no enable pin.	Lacks EN control; unsuitable for dynamic power gating in multi-sleep-state systems.	Select when ultra-low IQ dominates over enable functionality and load current stays below 100mA.
Torex XC6206P112MR-G	150mA, 1.1V ±2%, 45µA IQ, SOT23-3 - looser accuracy, higher noise (80µV_rms), no enable, but AEC-Q200 qualified.	Targeted at automotive infotainment displays where qualification outweighs noise/accuracy trade-offs.	Choose only for automotive-grade designs requiring PPAP support and extended temperature validation.

Compared with MCP1700T-1102E/TT and XC6206P112MR-G, AP7315-11SA-7 uniquely balances 150mA drive capability, ±1% accuracy, 60µV_rms noise, and active-high enable - making it optimal for consumer RF and imaging applications demanding both precision and controllability.

Availability

AP7315-11SA-7 is available at Aetrix Electronics and suitable for RF power amplifier biasing, camera sensor core voltage regulation, and wireless adapter baseband IC supply requiring stable component supply, consistent parametric performance, and SOT23-3 footprint compatibility.

Supply support for AP7315-11SA-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 ICs, with design centers in Asia, Europe, and the US, serving industrial, computing, communications, and consumer markets.

The AP7315 series belongs to Diodes' high-PSRR, low-noise LDO product line - engineered specifically for noise-sensitive RF, imaging, and portable multimedia applications where power integrity directly impacts signal fidelity.

FAQ

What is the minimum input voltage required for AP7315-11SA-7 to maintain regulation at full 150mA load?

The minimum input voltage is determined by dropout: at 150mA, max dropout is 0.64V (per datasheet Table 1). With 1.1V nominal output, VIN must be ≥1.74V to sustain regulation. The absolute minimum specified VIN is 1.7V - meaning operation at full load begins just above that threshold, with marginal headroom.

Can AP7315-11SA-7 be used without connecting the EN pin?

Yes - if enable control is unused, the EN pin must be tied directly to VIN to ensure permanent activation. Leaving EN floating is prohibited per datasheet; it may cause erratic startup, oscillation, or undefined output state due to internal gate threshold sensitivity.

Does AP7315-11SA-7 include short-circuit protection, and what is its trip current?

Yes - it features fold-back current limiting. When VOUT is shorted to GND, output current is clamped to approximately 55mA (typical), preventing thermal runaway. This protects the device during board-level faults and allows safe recovery once the short is removed.

Is the SOT23-3 package of AP7315-11SA-7 thermally adequate for 150mA continuous operation at 85°C ambient?

Yes - with proper PCB layout: a 1-in² copper pour connected to the GND pin and thermal pad via ≥4 thermal vias reduces θ_JA to ~160°C/W. At 150mA and 1.7V input (0.6V dropout), power dissipation is 90mW, resulting in ~14°C junction rise - well within the 125°C max T_J limit.

AP7315-11SA-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

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):: 1.1V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.64V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 60 µA

Current - Supply (Max):: 100 µA

PSRR:: 75dB (1kHz)

Control Features:: -

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AP7315-11SA-7 FAQ

1.How can I place an order for AP7315-11SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315-11SA-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 AP7315-11SA-7 reliable?

The price and inventory of AP7315-11SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-11SA-7 is usually 5 days.

3.What payment methods are accepted for AP7315-11SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-11SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315-11SA-7?

AP7315-11SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315-11SA-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 AP7315-11SA-7?

For technical support, including AP7315-11SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-11SA-7 requirements.

6.How does Aetrix verify that AP7315-11SA-7 is sourced from the original manufacturer or authorized distributors?

All AP7315-11SA-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 AP7315-11SA-7 meets industry standards.

7.What is the process for return or replacement of AP7315-11SA-7?

All AP7315-11SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-11SA-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 AP7315-11SA-7 part is unused and in its original packaging.

Return procedure for AP7315-11SA-7:

1.Submit a request within 90 days.

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

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