My Inquiry
My Account
Diodes Incorporated AP7315-32W5-7
- Part No.:
- AP7315-32W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315-32W5-7.pdf
- Description:
- IC REG LINEAR 3.2V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7315-32W5-7 from Diodes Incorporated is a 3.2V 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 - designed for RF supply rails in compact portable electronics.
For engineers reviewing the AP7315-32W5-7 datasheet, AP7315-32W5-7 pinout, AP7315-32W5-7 application, or AP7315-32W5-7 equivalent, this page delivers verified electrical specs, SOT25 package layout guidance, real-world load transient behavior, and validated alternative LDOs for power-sensitive handheld designs.
Technical Context
The AP7315-32W5-7 uses a CMOS-based architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its enable-controlled operation supports precise power sequencing in multi-rail systems.
It operates across 1.7V–5.25V input range while maintaining stable 3.2V output up to 150mA load, with dropout as low as 210mV at full load. Thermal performance is enhanced via the SOT25's exposed thermal pad connected to PCB copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.2V ±1% - ensures tight regulation for 3.3V-tolerant I/O domains without external feedback. |
| Max Output Current | 150mA - sufficient for powering baseband processors, RF transceivers, or camera sensor bias circuits. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding noisy power domains. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves signal integrity in analog front-ends and PLL reference supplies. |
| Quiescent Current | 35µA typical - extends battery life in always-on subsystems like Bluetooth LE receivers or sensor hubs. |
| Dropout Voltage | 210mV at 150mA - enables operation from single-cell Li-ion (3.0V min) or 3.3V rail with margin. |
| Enable Threshold | VEN(H) ≥1.3V, VEN(L) ≤0.5V - compatible with 1.8V/3.3V GPIOs for clean power gating. |
Pinout & Package
SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm) package with exposed thermal pad. Pin 1 = VIN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC (no internal connection), Pin 5 = VOUT. Thermal pad must be soldered to PCB ground plane 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 adjacent to minimize input impedance. |
| GND (Pin 2) | Ground reference | Primary return path for input/output currents; must connect directly to low-impedance ground plane. |
| EN (Pin 3) | Enable control | Active-high logic input; drives regulator into shutdown (<1µA standby) when pulled low. |
| NC (Pin 4) | No internal connection | Not bonded; recommended to tie to GND to maximize PCB copper area for thermal conduction. |
| VOUT (Pin 5) | Regulated output | Delivers stable 3.2V; requires 0.47µF ceramic capacitor placed within 2mm of pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR | 75dB at 1kHz - rejects ripple from switching regulators, critical for RF and audio subsystems. |
| Ultra-low noise | 60µVrms (10Hz–100kHz) - avoids phase noise degradation in local oscillator supplies. |
| Low quiescent current | 35µA - enables >1-year battery life in coin-cell-powered IoT sensors with periodic wake-up. |
| Wide input range | 1.7V–5.25V - supports direct connection to Li-ion, Li-Po, or regulated 3.3V/5V rails without pre-regulation. |
| Thermal-enhanced SOT25 | Exposed thermal pad - reduces θJA by ~30°C/W vs. standard SOT23, enabling 150mA continuous operation at +85°C ambient. |
Applications
| RF Power Amplifier Bias | Camera Sensor Core Supply |
|---|---|
|
Use Scenario: Providing clean, low-noise bias to GaAs pHEMT power amplifiers in 4G/5G mobile front-ends. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 3.2V to PA drain terminal, rejecting switching noise from PMIC buck converters. Use Value: 60µVrms noise prevents AM-to-PM distortion; 75dB PSRR maintains EVM <2.5% under dynamic load. |
Use Scenario: Powering high-resolution CMOS image sensor cores requiring precise voltage for consistent ADC linearity. IC Role / Device Role / Timing Role: Fixed 3.2V LDO supplying sensor analog core, decoupled from noisy digital I/O domain. Use Value: ±1% accuracy ensures <±0.5 LSB gain error in 12-bit image data; fast load transient response prevents frame corruption. |
| Wireless Audio Codec Reference | Bluetooth LE SoC I/O Rail |
|
Use Scenario: Generating ultra-low-noise reference voltage for stereo audio DACs in true wireless earbuds. IC Role / Device Role / Timing Role: Dedicated LDO isolating DAC reference from shared 3.3V system rail contaminated by Class-D amplifier switching. Use Value: 60µVrms noise contributes <−110dB THD+N; 35µA IQ minimizes impact on 20-hour battery runtime. |
Use Scenario: Supplying 3.2V to Bluetooth 5.0 SoC I/O banks interfacing with touch controllers and LED drivers. IC Role / Device Role / Timing Role: Enable-controlled LDO allowing firmware to power-cycle I/O peripherals during deep sleep modes. Use Value: 1µA shutdown current eliminates leakage paths; 210mV dropout enables operation down to 3.0V battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, enable-controlled LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | 3.3V output, 250mA rating, 6µVrms noise, but only 60dB PSRR at 1kHz and no NC pin. | Better noise floor but lower PSRR limits use in high-switching-noise environments like multi-PMIC systems. | Select when ultra-low noise dominates over PSRR; verify thermal margin at 150mA in SOT23 package. |
| Torex XC6210B322MR-G | 3.2V output, 150mA, 40µVrms noise, 70dB PSRR, but SOT25-5 pinout differs (Pin 4 = VOUT, Pin 5 = GND). | Superior noise performance suits precision analog, but pinout mismatch requires PCB redesign. | Choose for lowest possible noise in space-constrained designs where layout revision is feasible. |
Compared with MCP1700T-3302E/TT and XC6210B322MR-G, the AP7315-32W5-7 uniquely balances 75dB PSRR, 60µVrms noise, and SOT25 thermal capability - making it optimal for RF and imaging applications where both noise rejection and thermal reliability are non-negotiable.
Availability
AP7315-32W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core supply, wireless audio codec reference, and Bluetooth LE SoC I/O rail applications requiring stable component supply across production lifecycles.
Supply support for AP7315-32W5-7 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 portable electronics including smartphones, tablets, and wireless communication modules.
FAQ
What is the maximum allowable input voltage for AP7315-32W5-7?
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 overvoltage protection in downstream circuits. Operation above 5.25V is not guaranteed per datasheet specifications and may reduce long-term reliability.
Can the NC pin (Pin 4) be left floating in the SOT25 package?
No - Pin 4 is internally unconnected but must be tied to GND on the PCB. This maximizes copper area for thermal conduction from the exposed pad and prevents parasitic antenna effects that could couple noise into adjacent analog traces. Leaving it floating degrades thermal performance and may increase EMI susceptibility.
Does AP7315-32W5-7 include built-in output discharge functionality?
No - AP7315-32W5-7 is the non-discharge variant. It lacks an internal pull-down transistor on the VOUT pin. If rapid output discharge is required during shutdown, an external 100kΩ resistor from VOUT to GND is recommended, adding <1µA leakage in active mode and ensuring VOUT falls within 100µs after EN deactivation.
How does the 35µA quiescent current scale with input voltage and temperature?
Quiescent current remains stable at 20–60µA across 1.7V–5.25V input and −40°C to +85°C ambient, per Electrical Characteristics table. At 25°C and 3.3V input, typical IQ is 35µA; it increases only marginally to ~40µA at 85°C, confirming robust process design for battery-critical applications.
AP7315-32W5-7 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):
- 3.2V
- 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
AP7315-32W5-7 FAQ
1.How can I place an order for AP7315-32W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-32W5-7 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 AP7315-32W5-7 reliable?
The price and inventory of AP7315-32W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-32W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315-32W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-32W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-32W5-7?
AP7315-32W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-32W5-7 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 AP7315-32W5-7?
For technical support, including AP7315-32W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-32W5-7 requirements.
6.How does Aetrix verify that AP7315-32W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315-32W5-7 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 AP7315-32W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315-32W5-7?
All AP7315-32W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-32W5-7, 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 AP7315-32W5-7 part is unused and in its original packaging.
Return procedure for AP7315-32W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7315-32W5-7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
