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Diodes Incorporated AP7315-33W5-7
- Part No.:
- AP7315-33W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315-33W5-7.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
AP7315-33W5-7 from Diodes Incorporated is a 3.3V 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, operates from 1.7V to 5.25V input, and is optimized for RF supply rails in compact portable devices.
For engineers reviewing the AP7315-33W5-7 datasheet, AP7315-33W5-7 pinout, AP7315-33W5-7 application, or AP7315-33W5-7 equivalent, this page delivers verified electrical specs, SOT25 package layout guidance, real-world load transient behavior, and validated alternative options for low-noise, space-constrained LDO selection.
Technical Context
The AP7315-33W5-7 uses a CMOS-based architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its non-discharge topology maintains output voltage during shutdown, avoiding unintended discharge of downstream capacitance.
It achieves stable regulation with only 0.47µF ceramic input and output capacitors, supports fast load-step response (e.g., 1mA ↔ 150mA in <100µs), and sustains ±30ppm/°C output voltage drift across –40°C to +85°C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% at 25°C; ensures precise biasing for 3.3V logic, RF ICs, and camera sensors without external feedback. |
| Max Output Current | 150mA guaranteed; sufficient for powering single-core microcontrollers, Bluetooth radios, or image sensor interfaces. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC-DC converters feeding noisy power domains. |
| Output Noise | 60µVrms (10Hz–100kHz); minimizes phase noise in VCOs and jitter in high-speed serial links. |
| Quiescent Current | 35µA typical; enables >1-year battery life in always-on IoT sensor nodes with periodic wake-up cycles. |
| Dropout Voltage | 210mV at 150mA (typical); allows operation from 3.51V input - compatible with single-cell Li-ion (3.6V nominal) or dual-cell alkaline supplies. |
| Enable Threshold | VEN(H) ≥ 1.3V; compatible with 1.8V/3.3V GPIOs without level-shifting; VEN(L) ≤ 0.5V ensures clean shutdown. |
Pinout & Package
SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm) package with exposed thermal pad. Requires PCB copper area under thermal pad connected to GND for optimal thermal performance (θJA ≈ 220°C/W on JEDEC High-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – VIN | Input power supply | Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed within 2mm of pin for stability and noise rejection. |
| 2 – GND | Power ground reference | Must connect directly to low-impedance ground plane; shared return path for VIN, VOUT, and EN affects PSRR and noise coupling. |
| 3 – EN | Enable control input | Active-high logic; floating state is undefined - tie to VIN if always-on operation is required. |
| 4 – NC | No-connect terminal | Internally unconnected; recommended to tie to GND to maximize thermal copper area and reduce EMI susceptibility. |
| 5 – VOUT | Regulated output | Delivers 3.3V ±1%; place 0.47µF ceramic capacitor within 2mm of pin and use wide trace to minimize IR drop under 150mA load. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 60µVrms over 10Hz–100kHz band - preserves signal integrity in analog front-ends and RF receivers. |
| High PSRR at low frequency | 75dB at 1kHz - effectively isolates sensitive analog circuits from buck converter ripple. |
| Low quiescent current | 35µA typical - extends battery runtime in always-on wearable and sensor applications. |
| Wide input voltage range | 1.7V to 5.25V - supports direct connection to Li-ion, Li-Po, or regulated 3.3V/5V system rails. |
| Thermal-enhanced SOT25 | 5-pin thermally optimized package with exposed pad - enables 150mA continuous output without derating at +60°C ambient. |
Applications
| RF Power Amplifier Bias | Camera Image Sensor Core Supply |
|---|---|
|
Use Scenario: Providing clean, stable 3.3V bias to GaAs pHEMT power amplifiers in 2.4GHz Wi-Fi modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated VCC_PA with minimal phase noise contribution to transmit chain. Use Value: 60µVrms noise and 75dB PSRR prevent AM-to-PM conversion and maintain EVM <3% at 54Mbps OFDM. |
Use Scenario: Powering the digital core and analog pixel array of a 5MP CMOS image sensor in smartphone front cameras. IC Role / Device Role / Timing Role: Primary 3.3V rail generator with fast transient response to handle burst-mode readout current spikes. Use Value: 100µs load-step recovery (1mA→150mA) prevents frame corruption during rolling shutter exposure. |
| Bluetooth LE Audio Transceiver | Portable Media Player Codec Supply |
|
Use Scenario: Supplying 3.3V to a Bluetooth 5.3 audio SoC with integrated ADC/DAC and DSP in true wireless earbuds. IC Role / Device Role / Timing Role: Always-on LDO enabling ultra-low-power listening mode while maintaining clock domain stability. Use Value: 35µA quiescent current extends standby time to >120 hours; ±1% accuracy ensures consistent DAC reference scaling. |
Use Scenario: Regulating 3.3V for stereo audio codec ICs in handheld MP3 players with 12-hour battery life target. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupling DAC output stage from digital switching noise. Use Value: 60µVrms noise floor enables >95dB SNR in 24-bit playback; dropout <210mV permits use with aging alkaline cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 3.3V fixed, 250mA, 6µA IQ, but only 60dB PSRR @1kHz and 120µVrms noise. | Lacks RF-grade noise/PSRR performance; suitable for digital-only rails, not RF or precision analog. | Choose when ultra-low IQ dominates over noise/PSRR - e.g., coin-cell-powered remote controls. |
| Torex XC6206P332MR-G | 3.3V fixed, 250mA, 15µA IQ, 70dB PSRR @1kHz, 80µVrms noise, SOT23-3 package. | No enable pin; smaller footprint but no shutdown control - limits power sequencing flexibility. | Choose when board space is critical and enable functionality is unnecessary - e.g., simple peripheral regulators. |
Compared with MCP1700-3302E/TO and XC6206P332MR-G, the AP7315-33W5-7 uniquely balances 75dB PSRR, 60µVrms noise, 35µA IQ, and active enable in a thermally robust SOT25 - making it optimal for RF and imaging subsystems where noise, regulation accuracy, and controllability are jointly critical.
Availability
AP7315-33W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera image sensor core supply, and Bluetooth LE audio transceiver applications requiring stable component supply, full traceability, and long-term production continuity.
Supply support for AP7315-33W5-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP7315 series belongs to Diodes' precision LDO portfolio, engineered specifically for noise-sensitive portable electronics - emphasizing PSRR, output accuracy, and ultra-low quiescent current in miniature packages.
FAQ
What is the maximum allowable input voltage for AP7315-33W5-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating the specified dropout margin and may degrade long-term reliability, especially at elevated temperatures. Operation at 5.5V is not supported per datasheet conditions.
Does AP7315-33W5-7 include internal short-circuit protection?
Yes - it features fold-back current limiting that clamps output current to approximately 55mA when VOUT is shorted to GND. This protects the device from thermal damage during sustained fault conditions and complies with JEDEC stress testing requirements for portable equipment.
Can the NC pin (Pin 4) be left floating on the SOT25 package?
No - Pin 4 is internally unconnected but electrically isolated. Diodes recommends connecting it to GND to maximize PCB copper area for thermal dissipation and reduce electromagnetic susceptibility. Leaving it floating may compromise thermal performance and EMI resilience.
Is AP7315-33W5-7 qualified for automotive applications?
No - AP7315-33W5-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP7315Q series) with PPAP capability, IATF 16949 manufacturing, and extended temperature screening. For automotive designs, contact Diodes' automotive sales team for qualified alternatives.
AP7315-33W5-7 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):
- 3.3V
- 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:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7315-33W5-7 FAQ
1.How can I place an order for AP7315-33W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-33W5-7 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 AP7315-33W5-7 reliable?
The price and inventory of AP7315-33W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-33W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315-33W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-33W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-33W5-7?
AP7315-33W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-33W5-7 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 AP7315-33W5-7?
For technical support, including AP7315-33W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-33W5-7 requirements.
6.How does Aetrix verify that AP7315-33W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315-33W5-7 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 AP7315-33W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315-33W5-7?
All AP7315-33W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-33W5-7, 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 AP7315-33W5-7 part is unused and in its original packaging.
Return procedure for AP7315-33W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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