My Inquiry
My Account
Diodes Incorporated AP7315-32SA-7
- Part No.:
- AP7315-32SA-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7315-32SA-7.pdf
- Description:
- IC REG LINEAR 3.2V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,532
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7315-32SA-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 space-constrained portable devices using the SOT23-3 package.
For engineers reviewing the AP7315-32SA-7 datasheet, AP7315-32SA-7 pinout, AP7315-32SA-7 application, or AP7315-32SA-7 equivalent, this page delivers verified electrical specs, thermal layout guidance, enable control thresholds, dropout behavior across temperature, and real-world load transient response data - all specific to the 3.2V SOT23-3 variant.
Technical Context
The AP7315-32SA-7 implements a CMOS-based LDO architecture with integrated voltage reference, error amplifier, current-limit circuitry, and active enable logic. Its non-discharge output stage avoids automatic VOUT discharge on shutdown, preserving downstream capacitor charge.
It operates across 1.7V–5.25V input range with guaranteed 150mA output, achieves 210mV typical dropout at 150mA (for 3.2V output), and maintains ±30ppm/°C output voltage drift over –40°C to +85°C ambient - enabling stable biasing of sensitive RF front-end components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.2V ±1% at +25°C - ensures precise bias for 3.3V-tolerant RF ICs without external feedback network. |
| Max Output Current | 150mA continuous - sufficient for powering single-band RF transceivers or camera sensor analog blocks. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC-DC converters feeding noisy system rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes phase noise degradation in VCO/PLL supply applications. |
| Quiescent Current | 35µA typical - extends battery life in always-on receiver modes of portable wireless devices. |
| Dropout Voltage | 210mV at 150mA (TA = +25°C) - enables operation from single-cell Li-ion (3.0V min) while maintaining regulation. |
| Enable Threshold | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7315-32SA-7 uses the SOT23-3 (SA) package: 1.7mm × 2.9mm footprint, 1.3mm height, surface-mount, lead-free, RoHS-compliant. Thermal pad is absent - thermal dissipation relies on copper area under GND and VIN/VOUT traces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 3) | Input power supply connection | Accepts 1.7V–5.25V; requires 0.47µF ceramic decoupling capacitor placed within 2mm of pin to suppress high-frequency noise. |
| GND (Pin 1) | Power ground reference | Must connect directly to low-impedance PCB ground plane; serves as return path for both input and output currents. |
| VOUT (Pin 2) | Regulated output voltage | Delivers stable 3.2V ±1%; requires 0.47µF ceramic output capacitor adjacent to pin to ensure transient stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 60µVrms output noise enables clean power for RF synthesizers and high-resolution ADC references. |
| High PSRR at audio frequencies | 75dB rejection at 1kHz allows coexistence with noisy buck converters in shared power domains. |
| Ultra-low quiescent current | 35µA IQ supports >1-year battery life in IoT sensor nodes operating in deep-sleep mode. |
| Wide input voltage range | 1.7V–5.25V operation accommodates single-cell Li-ion, Li-polymer, or 3.3V system rails without pre-regulation. |
| Enable-controlled shutdown | EN pin (not present on SA package - tied internally to VIN) ensures default-on operation with no external pull-up required. |
Applications
| RF Power Amplifier Bias | Camera Sensor Analog Supply |
|---|---|
|
Use Scenario: Providing stable 3.2V 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 ripple-induced AM-to-PM distortion. Use Value: 60µVrms noise and 75dB PSRR prevent EVM degradation in 802.11ac/ax transmission. |
Use Scenario: Supplying analog core voltage to CMOS image sensors in smartphone front cameras. IC Role / Device Role / Timing Role: Precision voltage source for pixel array bias and column ADC reference. Use Value: ±1% accuracy and ±30ppm/°C drift maintain consistent sensor gain and dark current across temperature. |
| Wireless Audio Codec Supply | Low-Power MCU Core Rail |
|
Use Scenario: Powering DAC/ADC sections of Bluetooth audio SoCs in true-wireless earbuds. IC Role / Device Role / Timing Role: Clean, low-quiescent LDO isolating sensitive audio signal chain from digital switching noise. Use Value: 35µA IQ extends playback time; 210mV dropout enables use of partially discharged 3.0V battery cells. |
Use Scenario: Generating 3.2V core voltage for ARM Cortex-M0+ microcontrollers in wearable health monitors. IC Role / Device Role / Timing Role: Primary system regulator enabling dynamic voltage scaling during sleep/wake cycles. Use Value: Guaranteed 150mA output supports burst-mode sensor acquisition; EN-integrated SA variant simplifies BOM. |
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 output, 250mA rating, 6µA IQ, but only 60dB PSRR at 1kHz and 30µVrms noise. | Better for ultra-low-power sleep modes; insufficient PSRR for RF supply where 75dB is required. | Select when IQ <10µA is critical and RF noise immunity is secondary. |
| Torex XC6206P332MR-G | 3.3V output, 150mA, 1.5µA IQ, but 45dB PSRR at 1kHz and no enable pin in SOT23-3 variant. | Lower noise (25µVrms) but inadequate ripple rejection for mixed-signal RF systems. | Prefer only for always-on, non-RF sensor nodes where minimal IQ dominates design priority. |
Compared with MCP1700-3302E/TO and XC6206P332MR-G, AP7315-32SA-7 uniquely balances 75dB PSRR, 60µVrms noise, and 35µA IQ in a 3-pin SOT23 - making it the only option among the three qualified for RF supply rails requiring simultaneous low noise and high ripple rejection.
Availability
AP7315-32SA-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor analog supply, wireless audio codec supply, and low-power MCU core rail applications requiring stable component supply, long-lifecycle support, and automotive-grade traceability options.
Supply support for AP7315-32SA-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 solutions, with manufacturing certified to IATF 16949 and product qualification per AEC-Q100/101 standards.
The AP7315 series belongs to Diodes' high-PSRR, low-noise LDO family - engineered specifically for noise-sensitive analog and RF subsystems in portable communications equipment where small footprint and thermal efficiency are critical.
FAQ
Is AP7315-32SA-7 pin-compatible with other SOT23-3 LDOs?
No - AP7315-32SA-7 uses a non-standard pinout: Pin 1 = GND, Pin 2 = VOUT, Pin 3 = VIN. Most competing SOT23-3 LDOs (e.g., MCP1700, XC6206) assign Pin 1 = VIN, Pin 2 = GND, Pin 3 = VOUT. PCB layout must be verified against Diodes' official pin diagram to avoid functional failure.
Does AP7315-32SA-7 include an enable function?
No - the SA suffix denotes the SOT23-3 package variant with EN internally tied to VIN, resulting in always-on operation. For enable control, select AP7315-32W5 (SOT25) or AP7315-32FS4 (X2-DFN1010-4), both of which expose EN as a separate pin.
What is the maximum allowable PCB copper area under the SOT23-3 body for thermal relief?
The SOT23-3 package has no thermal pad; thermal performance relies on copper area connected to GND and VIN/VOUT pins. Diodes recommends ≥25 mm² total copper (≥10 mm² per pin) with 2oz copper weight and thermal vias to inner ground planes - achieving ≤120°C/W θJA in standard JEDEC 2-layer board conditions.
Can AP7315-32SA-7 be used with ceramic capacitors smaller than 0.47µF?
No - Diodes specifies 0.47µF minimum for both CIN and COUT to guarantee stability across –40°C to +85°C. Using 0.22µF or smaller risks oscillation under load transients, especially above 50mA, as confirmed by ESR vs. IOUT stability graphs in DS38352 Rev. 2–2.
AP7315-32SA-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):
- 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:
- -
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP7315-32SA-7 FAQ
1.How can I place an order for AP7315-32SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-32SA-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 AP7315-32SA-7 reliable?
The price and inventory of AP7315-32SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-32SA-7 is usually 5 days.
3.What payment methods are accepted for AP7315-32SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-32SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-32SA-7?
AP7315-32SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-32SA-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 AP7315-32SA-7?
For technical support, including AP7315-32SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-32SA-7 requirements.
6.How does Aetrix verify that AP7315-32SA-7 is sourced from the original manufacturer or authorized distributors?
All AP7315-32SA-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 AP7315-32SA-7 meets industry standards.
7.What is the process for return or replacement of AP7315-32SA-7?
All AP7315-32SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-32SA-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 AP7315-32SA-7 part is unused and in its original packaging.
Return procedure for AP7315-32SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7315-32SA-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 practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
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…
