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Diodes Incorporated AP7315-30FS4-7B
- Part No.:
- AP7315-30FS4-7B
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7315-30FS4-7B.pdf
- Description:
- IC REG LINEAR 3V 150MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
AP7315-30FS4-7B from Diodes Incorporated is a 3.0V fixed-output, 150mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, CMOS-based architecture, and is optimized for RF supply and portable media applications requiring stable, low-noise biasing.
For engineers reviewing the AP7315-30FS4-7B datasheet, AP7315-30FS4-7B pinout, AP7315-30FS4-7B application, or AP7315-30FS4-7B equivalent, this LDO delivers high PSRR, ultra-low noise, and precise 3.0V regulation in a 1.0mm × 1.0mm X2-DFN1010-4 package - critical for space-constrained, battery-powered RF and imaging subsystems.
Technical Context
The AP7315-30FS4-7B integrates a precision voltage reference, error amplifier, current-limit circuit, and CMOS pass transistor. Its enable input (EN) provides clean on/off control with defined logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V), and it operates across 1.7V–5.25V input while maintaining 3.0V output within ±1% over temperature and load.
Designed for low-noise analog and RF rails, it achieves 75dB ripple rejection at 1kHz and 60µVrms integrated noise without requiring external bypass capacitors beyond standard 0.47µF ceramic CIN/COUT. Dropout voltage is 210mV typical at 150mA (VOUT = 3.0V), enabling efficient operation near battery end-of-discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% at +25°C; ensures stable bias for 3.0V logic, RF ICs, and camera sensors without external feedback. |
| Max Output Current | 150mA guaranteed; supports moderate-power peripherals like Wi-Fi/BT modules and image signal processors. |
| PSRR | 75dB at 1kHz; suppresses switching noise from DC/DC converters feeding the same power domain. |
| Output Noise | 60µVrms (10Hz–100kHz); minimizes phase noise in RF synthesizers and jitter in high-speed ADC clocks. |
| Quiescent Current | 35µA typical; extends battery life in always-on sensor nodes and standby modes of portable devices. |
| Dropout Voltage | 210mV typical at 150mA; allows operation down to 3.21V input, compatible with single-cell Li-ion (3.0–4.2V) systems. |
| Input Voltage Range | 1.7V to 5.25V; accommodates wide-input sources including boosted 3.3V rails and unregulated battery inputs. |
Pinout & Package
X2-DFN1010-4 (1.0mm × 1.0mm, 0.4mm pitch) with exposed thermal pad. Requires PCB copper area connected to GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Power input | Accepts 1.7–5.25V; must be decoupled with ≥0.47µF ceramic capacitor placed adjacent to pin. |
| GND (Pin 2) | Ground reference | Primary return path for load current; connects to thermal pad for heat dissipation and low-impedance grounding. |
| EN (Pin 3) | Enable control | Active-high logic input; drives regulator ON when ≥1.3V, OFF when ≤0.5V; must not float. |
| VOUT (Pin 1) | Regulated output | Delivers stable 3.0V ±1%; requires ≥0.47µF ceramic capacitor close to pin for transient stability. |
| Thermal PAD | Thermal interface | Not electrically functional; must be soldered to large GND copper pour to limit junction temperature rise. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR | 75dB at 1kHz enables clean power delivery to noise-sensitive RF front-ends without additional filtering. |
| Ultra-Low Noise | 60µVrms (10Hz–100kHz) meets stringent requirements for analog signal chains and high-resolution ADC/DAC biasing. |
| Precision Output Accuracy | ±1% over temperature and line/load ensures reliable operation of 3.0V I/O interfaces and memory controllers. |
| Low Quiescent Current | 35µA typical supports >1-year battery life in IoT sensor nodes operating in deep-sleep cycles. |
| Small Footprint | X2-DFN1010-4 (1.0mm × 1.0mm) reduces PCB area by >60% vs. SOT23, enabling denser RF module layouts. |
Applications
| RF Power Amplifier Bias | CMOS Image Sensor Core Supply |
|---|---|
|
Use Scenario: Providing clean, regulated 3.0V bias to GaAs or SiGe RF power amplifiers in 4G/5G mobile front-ends. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable VCC_PA independent of noisy switched-mode supply rails. Use Value: 60µVrms noise prevents AM-to-PM conversion and maintains EVM < 2.5% under full transmit load. |
Use Scenario: Powering the analog core and PLL of high-resolution CMOS image sensors in smartphone cameras. IC Role / Device Role / Timing Role: Primary 3.0V analog rail regulator ensuring low-jitter clock generation and minimal pixel crosstalk. Use Value: ±1% accuracy and 75dB PSRR prevent gain drift and banding artifacts during video capture. |
| Wireless Audio Codec Supply | Portable Media Player System Rail |
|
Use Scenario: Supplying 3.0V to stereo audio codecs in Bluetooth earbuds and true-wireless headsets. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for DAC/ADC analog sections, isolated from digital switching noise. Use Value: 35µA quiescent current extends playback time by >15% versus higher-IQ alternatives. |
Use Scenario: Regulating 3.0V for NAND flash controllers and display drivers in handheld media players. IC Role / Device Role / Timing Role: Main system rail LDO supporting burst-mode data transfers and LCD backlight dimming. Use Value: 150mA output and 210mV dropout allow direct connection to single-cell Li-ion, simplifying power tree. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3002E/MB | 3.0V fixed, 250mA, 6µA IQ, but only 60dB PSRR at 1kHz and 120µVrms noise. | Lower noise sensitivity; suitable for digital I/O rails but not RF or high-fidelity audio. | Choose when ultra-low IQ dominates over PSRR/noise; avoid for RF bias or precision analog. |
| Torex XC6206P302MR-G | 3.0V fixed, 150mA, 1.0µA IQ, but 55dB PSRR at 1kHz and no EN pin. | No enable control; limited transient response due to lower bandwidth and PSRR. | Use only in always-on, ultra-low-power applications where shutdown capability is unnecessary. |
Compared with MCP1700-3002E/MB and XC6206P302MR-G, the AP7315-30FS4-7B uniquely balances 75dB PSRR, 60µVrms noise, and 35µA IQ in a 1.0mm² package - making it the only option qualified for simultaneous RF bias and portable media use cases.
Availability
AP7315-30FS4-7B is available at Aetrix Electronics and suitable for RF power amplifier bias, CMOS image sensor core supply, and wireless audio codec supply requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP7315-30FS4-7B 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 for power management, signal integrity, and connectivity applications.
The AP7315 series belongs to Diodes' high-performance LDO portfolio, designed specifically for noise-critical portable electronics where PSRR, output accuracy, and footprint efficiency are essential.
FAQ
What is the maximum input voltage rating for AP7315-30FS4-7B?
The absolute maximum input voltage is 6.0V. Operation above 5.25V violates recommended conditions and risks permanent damage. For sustained reliability, VIN must remain within 1.7V–5.25V per datasheet specifications, with derating applied at elevated ambient temperatures.
Does AP7315-30FS4-7B include output discharge functionality?
No. The "-7B" suffix indicates non-discharge configuration (AP7315, not AP7315D). When disabled via EN pin, the output remains floating - no internal pull-down resistor discharges VOUT. External discharge circuitry is required if fast turn-off decay is needed.
Can AP7315-30FS4-7B operate with ceramic capacitors smaller than 0.47µF?
No. The datasheet specifies minimum 0.47µF ceramic capacitors for both CIN and COUT to ensure stability and transient response. Using smaller values risks oscillation or excessive output voltage deviation under load steps, especially at 150mA output.
How does thermal performance depend on the X2-DFN1010-4 thermal pad layout?
Thermal resistance θJA drops from 220°C/W (no pad) to ~120°C/W when the exposed thermal pad is soldered to ≥100mm² of 2oz copper tied to GND. Leaving the pad unconnected or using insufficient copper increases junction temperature by >30°C at 150mA, risking thermal shutdown.
AP7315-30FS4-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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):
- 3V
- 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:
- -
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1010-4
AP7315-30FS4-7B FAQ
1.How can I place an order for AP7315-30FS4-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-30FS4-7B 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 AP7315-30FS4-7B reliable?
The price and inventory of AP7315-30FS4-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-30FS4-7B is usually 5 days.
3.What payment methods are accepted for AP7315-30FS4-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-30FS4-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-30FS4-7B?
AP7315-30FS4-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-30FS4-7B 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 AP7315-30FS4-7B?
For technical support, including AP7315-30FS4-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-30FS4-7B requirements.
6.How does Aetrix verify that AP7315-30FS4-7B is sourced from the original manufacturer or authorized distributors?
All AP7315-30FS4-7B 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 AP7315-30FS4-7B meets industry standards.
7.What is the process for return or replacement of AP7315-30FS4-7B?
All AP7315-30FS4-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-30FS4-7B, 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 AP7315-30FS4-7B part is unused and in its original packaging.
Return procedure for AP7315-30FS4-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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