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Diodes Incorporated AP7315-30SR-7
- Part No.:
- AP7315-30SR-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7315-30SR-7.pdf
- Description:
- IC REG LINEAR 3V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,542
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Product details
Overview
AP7315-30SR-7 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 operates from 1.7V to 5.25V input - optimized for RF supply rails in space-constrained portable devices.
For engineers reviewing the AP7315-30SR-7 datasheet, AP7315-30SR-7 pinout, AP7315-30SR-7 application, or AP7315-30SR-7 equivalent, key selection criteria include dropout voltage at 150mA (max 290mV for 3.0V output), thermal performance in SOT23-3, EN logic thresholds (0.5V low / 1.3V high), and compatibility with 0.47µF ceramic input/output capacitors.
Technical Context
The AP7315-30SR-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and CMOS pass transistor - enabling stable regulation with minimal external components. Its non-discharge architecture maintains output voltage during shutdown without sinking load capacitance.
Designed for low-noise biasing, it delivers 60µVrms noise across 10Hz–100kHz and achieves 75dB ripple rejection at 1kHz due to high PSRR topology and internal compensation. The EN pin supports direct logic-level control with <1.0µA leakage and defined VIH/VIL thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% - ensures stable power for 3.3V-tolerant I/O or core logic requiring tight DC accuracy. |
| Max Output Current | 150mA - sufficient for RF transceivers, camera modules, or sensor interfaces with burst-mode loads. |
| Dropout Voltage | 290mV max at 150mA - enables operation down to VIN = 3.29V, supporting single-cell Li-ion or 3.3V rail post-regulation. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets low-noise analog supply requirements for ADCs, VCOs, or RF front-ends. |
| Quiescent Current | 35µA typical - extends battery life in always-on subsystems like Bluetooth LE receivers or wake-on-event circuits. |
| Enable Thresholds | VIL ≤ 0.5V, VIH ≥ 1.3V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7315-30SR-7 is packaged in SOT23-3 (SR variant), a 3-pin surface-mount package with 0.95mm pitch and exposed pad not connected internally. PCB layout requires short, low-impedance traces to VIN, VOUT, and GND pins; thermal relief via large copper pour connected to GND improves power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 3) | Input power supply connection | Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed adjacent to minimize input impedance and suppress supply glitches. |
| GND (Pin 1) | Ground reference and thermal path | Must connect directly to system ground plane; serves as primary thermal conduction path in SOT23-3 package. |
| VOUT (Pin 2) | Regulated output voltage node | Delivers 3.0V ±1%; requires 0.47µF ceramic capacitor near load to ensure stability and transient response. |
| EN (Not present) | Enable control input | Not implemented in SR variant - regulator is permanently enabled; no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR | 75dB at 1kHz - rejects noise from switching regulators sharing same input source, critical for RF signal chains. |
| Ultra-low noise | 60µVrms (10Hz–100kHz) - avoids phase noise degradation in VCOs and jitter accumulation in clock paths. |
| Low quiescent current | 35µA typical - enables >1-year battery life in coin-cell-powered IoT sensors with periodic wake-up cycles. |
| Wide input range | 1.7V–5.25V - supports direct connection to single Li-ion (2.7–4.2V), USB (4.75–5.25V), or regulated 3.3V/2.5V rails. |
| ±1% output accuracy | Guaranteed over -40°C to +85°C - eliminates need for post-regulation trimming in production test flows. |
Applications
| RF Power Amplifier Bias | Camera Module Core Supply |
|---|---|
|
Use Scenario: Providing clean, stable 3.0V bias to GaAs pHEMT power amplifiers in 4G/5G mobile front-ends. IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated DC bias; replaces noisier switching solutions to prevent AM-to-PM distortion. Use Value: 60µVrms noise and 75dB PSRR prevent spectral regrowth and maintain ACLR compliance under dynamic RF load conditions. |
Use Scenario: Powering image sensor digital cores and ISP subsystems in smartphone rear cameras. IC Role / Device Role / Timing Role: Primary 3.0V supply for MIPI CSI-2 interface logic and on-die timing generators. Use Value: ±1% output accuracy ensures consistent pixel clock generation and prevents frame sync errors across temperature. |
| Wireless Audio Codec Supply | Portable Media Player Memory Interface |
|
Use Scenario: Supplying 3.0V to ultra-low-power Bluetooth audio codecs with integrated DACs and Class-D amplifiers. IC Role / Device Role / Timing Role: Dedicated LDO for analog audio signal chain, isolated from noisy digital domains. Use Value: 35µA quiescent current extends playback time; low dropout allows operation down to 3.29V, maximizing battery utilization. |
Use Scenario: Powering LPDDR2/LPDDR3 I/O buffers and command/address logic in handheld media players. IC Role / Device Role / Timing Role: Fixed 3.0V rail meeting JEDEC JESD209-2 voltage tolerance for memory interface signaling. Use Value: 150mA output supports burst-mode memory access; 290mV dropout enables use with aging batteries below 3.3V nominal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/TT | 300mA rated, 2µA IQ, but only 60dB PSRR at 1kHz and 30µVrms noise | Lacks RF-grade noise/PSRR specs; better suited for digital-only rails | Select when ultra-low IQ dominates over noise performance and higher current headroom is needed |
| Torex XC6210B302MR-G | 150mA, 65dB PSRR, 45µVrms noise, 25µA IQ, but requires 1µF output capacitor | Higher minimum COUT increases BOM cost and board area vs. AP7315's 0.47µF support | Choose if lower IQ justifies larger capacitor footprint and slightly reduced noise immunity |
Compared with MCP1700T-3002E/TT and XC6210B302MR-G, AP7315-30SR-7 uniquely balances RF-grade PSRR/noise, minimal external components, and SOT23-3 footprint - making it optimal for compact, noise-sensitive wireless endpoints where 150mA suffices.
Availability
AP7315-30SR-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera module core supply, wireless audio codec supply, and portable media player memory interface applications requiring stable component supply across high-mix consumer electronics production.
Supply support for AP7315-30SR-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 for power management, signal integrity, and connectivity applications.
The AP7315 series belongs to Diodes' high-PSRR, low-noise LDO product line, engineered specifically for noise-sensitive RF, imaging, and portable communication systems demanding minimal footprint and guaranteed accuracy.
FAQ
What is the maximum allowable input voltage for AP7315-30SR-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger thermal shutdown or degrade long-term reliability. Operation above 5.25V is not characterized or guaranteed per datasheet specifications.
Does AP7315-30SR-7 include an enable pin?
No - the SR suffix denotes the SOT23-3 package variant with no enable functionality. Pins are VIN (3), GND (1), and VOUT (2) only. For enable control, select SA (SOT23-5) or W5 (SOT25-5) variants, which include dedicated EN and NC pins per the pin assignment table.
Can AP7315-30SR-7 be used with ceramic output capacitors smaller than 0.47µF?
No - the device is characterized and stabilized for 0.47µF ceramic output capacitance. Using smaller values may cause instability, overshoot, or oscillation under load transients. The datasheet explicitly recommends 0.47µF as the minimum value for guaranteed stability across temperature and process variations.
What is the thermal resistance (θJA) of the SOT23-3 package in AP7315-30SR-7?
The typical junction-to-ambient thermal resistance is 250°C/W on a standard JEDEC 2-layer evaluation board (2in × 2in, 1oz planes). With a 1cm² copper pour connected to GND, θJA improves to ~120°C/W. Derating curves in the datasheet show 150mA output is sustainable up to +85°C ambient when PCB thermal design meets minimum copper area guidelines.
AP7315-30SR-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):
- 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:
- SOT-23-3
AP7315-30SR-7 FAQ
1.How can I place an order for AP7315-30SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-30SR-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 AP7315-30SR-7 reliable?
The price and inventory of AP7315-30SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-30SR-7 is usually 5 days.
3.What payment methods are accepted for AP7315-30SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-30SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-30SR-7?
AP7315-30SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-30SR-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 AP7315-30SR-7?
For technical support, including AP7315-30SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-30SR-7 requirements.
6.How does Aetrix verify that AP7315-30SR-7 is sourced from the original manufacturer or authorized distributors?
All AP7315-30SR-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 AP7315-30SR-7 meets industry standards.
7.What is the process for return or replacement of AP7315-30SR-7?
All AP7315-30SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-30SR-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 AP7315-30SR-7 part is unused and in its original packaging.
Return procedure for AP7315-30SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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