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Diodes Incorporated AP131-30WG-7
- Part No.:
- AP131-30WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP131-30WG-7.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:8,481
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Product details
Overview
AP131-30WG-7 from Diodes Incorporated is a 300mA fixed-output (3.0V) low-dropout linear regulator in SOT25 package, featuring 400mV dropout at full load, 50µA quiescent current, and active-low enable control. It integrates current limit, thermal shutdown, and bandgap reference with BP pin for noise reduction, targeting battery-powered portable electronics requiring stable low-noise voltage regulation.
For engineers reviewing the AP131-30WG-7 datasheet, AP131-30WG-7 pinout, AP131-30WG-7 application, or AP131-30WG-7 equivalent, key selection criteria include dropout voltage under 300mA load, ±2% output accuracy across temperature, EN pin logic thresholds (VENON ≥1.5V, VENOFF ≤0.8V), and SOT25 thermal resistance (θJA = 163°C/W).
Technical Context
The AP131-30WG-7 employs a PMOS pass element with internal 1.5Ω RON, enabling low dropout and zero base current draw. Its error amplifier compares feedback from the bandgap reference to regulate output within ±2% over -40°C to +85°C ambient.
Shutdown is controlled via active-low EN pin with sub-0.1µA leakage; BP pin accepts 0.1µF capacitor to reduce output noise. Protection includes fold-back short-circuit current limiting (150–300mA) and thermal shutdown triggered at junction temperatures exceeding +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% at 1mA, ensuring stable rail for 3.3V-tolerant I/O or low-power microcontrollers |
| Dropout Voltage | 400mV typ. at 300mA, allowing operation down to 3.4V input for single-cell Li-ion or dual-cell alkaline systems |
| Quiescent Current | 50µA typ. across 0–300mA load, minimizing standby power loss in always-on sensor nodes |
| Enable Threshold | VENON ≥1.5V, VENOFF ≤0.8V, compatible with 1.8V/3.3V GPIO without level-shifting |
| PSRR | 60dB at 100Hz, suppressing ripple from switching pre-regulators in hybrid power architectures |
| Thermal Resistance | θJA = 163°C/W (SOT25), limiting max power dissipation to 250mW at 25°C ambient |
| Short-Circuit Current | Fold-back limited to 150–300mA, preventing thermal runaway during output fault conditions |
Pinout & Package
SOT25 (5-pin, lead-free, halogen-free "Green" package) with 1.6mm × 2.8mm footprint and 0.95mm height; optimized for FR-4 PCBs with 2oz copper and recommended pad layout per Diodes Inc. package outline SOT25.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input supply connection | Accepts 2.7–5.5V; requires 1µF ceramic input capacitor for stability |
| 2: EN | Active-low enable control | Pulled high internally; drives output ON when ≥1.5V, OFF when ≤0.8V |
| 3: BP | Bandgap bypass terminal | Connects 0.1µF capacitor to reduce output noise and improve PSRR |
| 4: OUT | Regulated output | Delivers up to 300mA at 3.0V ±2%; requires 10µF output capacitor |
| 5: GND | Power ground reference | Common return path for IN, OUT, EN, and BP; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Low-quiescent-current LDO | 50µA IQ enables >1-year battery life in 10µA average-load IoT sensors |
| Fast transient response | Stabilizes within microseconds after load step, critical for burst-mode RF transceivers |
| Integrated protection | Current limit + thermal shutdown prevent damage during sustained overload or PCB overheating |
| BP pin noise filtering | 0.1µF capacitor on BP reduces output voltage noise by >20dB vs. standard LDOs |
| High accuracy output | ±2% tolerance ensures reliable operation of ADC references and precision analog circuits |
Applications
| Wireless Sensor Node | USB Peripheral Power |
|---|---|
Use Scenario: Battery-powered Zigbee/Bluetooth LE node with intermittent RF transmission and deep-sleep cycles. IC Role / Device Role / Timing Role: Primary 3.0V supply regulator for MCU, radio, and sensor interface. Use Value: 50µA quiescent current extends CR2032 battery life beyond 2 years; fast enable delay (<8µs) supports rapid wake-up. | Use Scenario: Self-powered USB audio adapter drawing peak 250mA during DAC operation. IC Role / Device Role / Timing Role: Post-regulator cleaning 5V USB bus voltage to clean 3.0V for codec and op-amps. Use Value: 60dB PSRR at 100Hz suppresses USB switcher ripple; ±2% accuracy maintains SNR performance. |
| Industrial Control I/O Module | Embedded Display Backlight Driver Bias |
Use Scenario: DIN-rail mounted PLC I/O module operating in -40°C to +85°C industrial environment. IC Role / Device Role / Timing Role: Local 3.0V rail generator for isolated digital isolators and level-shifters. Use Value: Guaranteed 300mA output and thermal shutdown ensure reliability under convection-limited enclosure conditions. | Use Scenario: Small TFT-LCD module with LED backlight requiring stable 3.0V bias for gate driver ICs. IC Role / Device Role / Timing Role: Low-noise bias supply decoupled from noisy DC-DC converter powering LEDs. Use Value: BP pin filtering reduces switching noise coupling into display timing signals, eliminating visual artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343-30SAG-7 | Higher output current (500mA), lower dropout (250mV), but no BP pin for noise filtering | Better for higher-load applications; lacks BP-based noise suppression for sensitive analog rails | Select when load exceeds 300mA or dropout <250mV is required; avoid where ultra-low noise is critical |
| MCP1700-3002E/TO | Same 3.0V output, 250mA rating, 6µA quiescent current, but no enable pin or BP pin | Lower IQ ideal for multi-year battery use, but no remote ON/OFF control or noise optimization | Select for ultra-low-power always-on devices without need for enable or noise-sensitive analog circuitry |
Compared with AP7343-30SAG-7 and MCP1700-3002E/TO, AP131-30WG-7 uniquely balances 300mA capability, 50µA IQ, active enable, and BP-based noise reduction-making it optimal for battery-powered mixed-signal systems needing regulated, quiet 3.0V rails with controllable startup.
Availability
AP131-30WG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, USB peripherals, industrial I/O modules, and embedded display biasing requiring stable component supply with RoHS-compliant, green packaging.
Supply support for AP131-30WG-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.
The AP131 series targets cost-sensitive, space-constrained portable and industrial applications requiring robust, low-noise LDO regulation with integrated protection and flexible enable control.
FAQ
What is the maximum input voltage for AP131-30WG-7?
The absolute maximum input voltage is +6V, but the recommended operating range is 2.7V to 5.5V. Exceeding 5.5V risks permanent damage even briefly; operation above 5.5V violates the Recommended Operating Conditions and may trigger thermal shutdown unpredictably due to excessive power dissipation in the PMOS pass device.
Can AP131-30WG-7 be used without the BP capacitor?
Yes, the device functions without the BP capacitor, but output noise increases significantly-typical PSRR drops ~15dB at 10kHz and broadband noise rises by 3×. The BP pin is optional for basic regulation but essential for noise-sensitive applications like ADC references or RF bias rails where low-noise performance is specified.
Is AP131-30WG-7 pin-compatible with other AP131 variants?
Yes-all AP131 variants (e.g., AP131-18WG-7, AP131-33WG-7) share identical SOT25 pinout, EN logic, and functional block diagram. Only the fixed output voltage differs; no PCB redesign is needed when changing output voltage versions, provided input voltage and load requirements remain within spec.
Does AP131-30WG-7 support reverse polarity protection?
No, AP131-30WG-7 has no built-in reverse polarity protection. Applying reversed input voltage (IN negative relative to GND) can cause latch-up or permanent damage to the internal PMOS and bandgap circuitry. External protection-such as a series Schottky diode or dedicated reverse-voltage protection IC-is required in systems prone to incorrect battery insertion or field wiring errors.
AP131-30WG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP131-30WG-7 FAQ
1.How can I place an order for AP131-30WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP131-30WG-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 AP131-30WG-7 reliable?
The price and inventory of AP131-30WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP131-30WG-7 is usually 5 days.
3.What payment methods are accepted for AP131-30WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP131-30WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP131-30WG-7?
AP131-30WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP131-30WG-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 AP131-30WG-7?
For technical support, including AP131-30WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP131-30WG-7 requirements.
6.How does Aetrix verify that AP131-30WG-7 is sourced from the original manufacturer or authorized distributors?
All AP131-30WG-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 AP131-30WG-7 meets industry standards.
7.What is the process for return or replacement of AP131-30WG-7?
All AP131-30WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP131-30WG-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 AP131-30WG-7 part is unused and in its original packaging.
Return procedure for AP131-30WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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