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Diodes Incorporated AP7331-20SNG-7
- Part No.:
- AP7331-20SNG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7331-20SNG-7.pdf
- Description:
- IC REG LINEAR 2V 300MA 6DFN2020
- Quantity:
- Payment:
- Shipping:
Inventory:2,147
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Product details
Overview
AP7331-20SNG-7 from Diodes Incorporated is a 300mA fixed-output (2.0V) low-dropout linear regulator in DFN2020-6 package, featuring 65μA typical quiescent current, 300mV typical dropout at full load, and fast 80μs startup. It integrates enable control, thermal shutdown, current limiting, and short-circuit protection-designed for battery-powered wireless LAN cards and portable computing systems requiring stable, ultra-low-power voltage regulation.
For engineers reviewing the AP7331-20SNG-7 datasheet, AP7331-20SNG-7 pinout, AP7331-20SNG-7 application, or AP7331-20SNG-7 equivalent, key selection considerations include its 2.0V fixed output, DFN2020-6 thermal performance (θJA = 167°C/W), PSRR of 65dB at 100Hz, stability with 1μF ceramic output capacitor, and -40°C to +85°C ambient operation range.
Technical Context
The AP7331-20SNG-7 implements a PMOS pass transistor architecture enabling low dropout and minimal quiescent current across load and input voltage variations. Its internal 0.4V bandgap reference feeds an error amplifier that regulates output via feedback from the fixed 2.0V divider network embedded in the die.
Enable logic operates with VIH ≥ 1.4V and VIL ≤ 0.4V, supporting direct microcontroller GPIO control. Protection circuitry includes foldback current limiting (400–600mA), short-circuit clamping (~100mA), and thermal shutdown activation at ~140°C with 15°C hysteresis-ensuring robust fault recovery without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0V ±2% over -40°C to +85°C; enables direct replacement of 2.0V logic rails without external resistors. |
| Max Output Current | 300mA continuous; sufficient for powering single-core microcontrollers, RF transceivers, or sensor interfaces. |
| Quiescent Current | 65μA typical at full load; minimizes standby power loss in always-on battery systems like IoT edge nodes. |
| Dropout Voltage | 300mV typical at 300mA; allows operation from 2.3V input when regulating 2.0V, extending usable battery voltage range. |
| PSRR | 65dB typical at 100Hz; suppresses low-frequency noise from switching DC/DC converters upstream. |
| Start-up Time | 80μs typical; supports rapid wake-from-sleep sequences in portable devices without output voltage overshoot. |
| Thermal Shutdown | Triggers at ~140°C junction temperature with 15°C hysteresis; prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
AP7331-20SNG-7 uses the DFN2020-6 (2.0mm × 2.0mm, 0.65mm pitch) package with exposed thermal pad for enhanced power dissipation. Pin numbering follows top-view orientation with Pin 1 marked by dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 3) | Input voltage supply | Accepts 2V–6V; requires ≥1μF ceramic bypass capacitor placed adjacent to minimize input impedance and EMI susceptibility. |
| GND (Pin 2) | Power ground reference | Common return path for IN, OUT, EN, and thermal pad; must connect to solid ground plane for thermal and noise performance. |
| EN (Pin 1) | Enable control input | Active-high logic interface; drives regulator ON when ≥1.4V, OFF when ≤0.4V; ties to IN if always-on operation required. |
| OUT (Pin 4) | Regulated output | Delivers stable 2.0V; requires ≥1μF X7R/X5R ceramic capacitor placed within 2mm of OUT/GND pins for transient stability. |
| NC (Pins 5, 6) | No connection | Internally unconnected; must remain floating-no routing or soldering permitted to avoid parasitic coupling or mechanical stress. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ regulation | 65μA quiescent current maintained across full 0–300mA load and 2–6V input range-critical for multi-year battery life in remote sensors. |
| Fast transient response | Stable output during 0→300mA load steps with <50mV undershoot/overshoot-enables reliable power delivery to GSM baseband ICs and DSPs. |
| Single-capacitor stability | Guaranteed stability with 1μF ceramic output capacitor (ESR 10–200mΩ), eliminating need for bulk electrolytics and reducing BOM count. |
| Integrated fault protection | Combines current limit (600mA), short-circuit clamp (100mA), and thermal shutdown (140°C) in one die-removes requirement for external protection circuitry. |
| Green packaging | DFN2020-6 meets RoHS Directive 2002/95/EC with Br/Sb-free molding compound and lead-free finish-compliant for global industrial shipments. |
Applications
| Wireless LAN Cards | XDSL Routers |
|---|---|
|
Use Scenario: Powering 2.0V RF front-end ICs and baseband processors in mini-PCIe Wi-Fi modules operating on single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 2.0V rail with fast load-step response to support 802.11ac burst transmission. Use Value: 65μA IQ extends module standby time; 80μs startup synchronizes with host-initiated link re-establishment without voltage droop. |
Use Scenario: Supplying 2.0V core voltage to ADSL2+ line drivers and PHY controllers in residential gateways powered from 5V DC adapter. IC Role / Device Role / Timing Role: Secondary LDO filtering ripple from upstream buck converter while maintaining tight regulation under dynamic DSL line loading. Use Value: 65dB PSRR at 100Hz attenuates switching noise; 300mV dropout enables >95% efficiency conversion from 2.3V minimum input. |
| Notebook Computer Subsystems | Battery-Powered Test Equipment |
|
Use Scenario: Regulating 2.0V for USB-C PD controller logic and Type-C port management ICs in ultrabooks with dual-battery configurations. IC Role / Device Role / Timing Role: Always-on LDO enabled via system PMIC, providing glitch-free 2.0V during sleep/wake transitions and hot-plug events. Use Value: 80μs startup ensures immediate controller readiness post-wake; NC pins simplify layout in space-constrained motherboard zones. |
Use Scenario: Powering 2.0V analog front-end (AFE) and microcontroller peripherals in handheld multimeters and signal generators running on AA/AAA cells. IC Role / Device Role / Timing Role: Main system LDO delivering precision voltage to ADC references and op-amp bias networks under variable load conditions. Use Value: ±2% output accuracy maintains measurement integrity; thermal shutdown prevents overheating during extended calibration cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2002E/TO | 250mA max output, 1.6μA IQ, SOT23-5 package, higher dropout (600mV @250mA) | Limited to lower-current sensor nodes; unsuitable for 300mA RF loads due to current and thermal constraints | Select only for ultra-low-IQ sub-100μA standby applications where 250mA peak suffices and board space permits SOT23-5. |
| Torex XC6206P202MR-G | 300mA output, 12μA IQ, SOT23-5, no enable pin, 400mV dropout @300mA | Lacks EN control and thermal shutdown; requires external enable circuitry for sequencing and fault isolation | Choose only for cost-sensitive, non-sequenced designs where enable functionality and robust protection are not required. |
Compared with MCP1700-2002E/TO and XC6206P202MR-G, AP7331-20SNG-7 uniquely balances 300mA capability, 65μA IQ, integrated EN, and full fault protection in a thermally efficient DFN2020-6-making it optimal for compact, battery-critical wireless and portable systems.
Availability
AP7331-20SNG-7 is available at Aetrix Electronics and suitable for wireless LAN cards, XDSL routers, and notebook computer subsystems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for AP7331-20SNG-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 industrial, computing, and communications markets.
The AP7331 series belongs to Diodes' low-quiescent-current LDO portfolio, engineered specifically for battery-powered and energy-sensitive applications demanding fast transient response, minimal dropout, and comprehensive integrated protection.
FAQ
What is the minimum input voltage required for AP7331-20SNG-7 to maintain 2.0V output at 300mA?
The AP7331-20SNG-7 requires a minimum input voltage of 2.3V to sustain regulated 2.0V output at 300mA load, based on its typical 300mV dropout voltage specification. At lower inputs, output voltage drops linearly; operation below 2.0V input is prohibited per absolute maximum ratings.
Can AP7331-20SNG-7 operate without an output capacitor?
No. The AP7331-20SNG-7 requires a minimum 1μF ceramic output capacitor (X7R/X5R, ESR 10–200mΩ) between OUT and GND for stability and transient response. Omitting it causes oscillation, excessive overshoot/undershoot, and potential damage during load steps.
Is the thermal pad on the DFN2020-6 package electrically connected?
Yes-the exposed thermal pad on AP7331-20SNG-7's DFN2020-6 is internally connected to GND and must be soldered to a dedicated PCB ground plane using at least 9 solder paste vias (0.3mm diameter) to achieve the specified θJA of 167°C/W and prevent thermal shutdown under full load.
Does AP7331-20SNG-7 support reverse polarity protection?
No. AP7331-20SNG-7 lacks built-in reverse-voltage protection. Applying negative voltage to IN or OUT relative to GND may damage the device. External protection-such as a series Schottky diode on the input-is required in systems prone to incorrect battery insertion or field servicing.
AP7331-20SNG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.55V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- 85 µA
- PSRR:
- 65dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6
AP7331-20SNG-7 FAQ
1.How can I place an order for AP7331-20SNG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7331-20SNG-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 AP7331-20SNG-7 reliable?
The price and inventory of AP7331-20SNG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7331-20SNG-7 is usually 5 days.
3.What payment methods are accepted for AP7331-20SNG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7331-20SNG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7331-20SNG-7?
AP7331-20SNG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7331-20SNG-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 AP7331-20SNG-7?
For technical support, including AP7331-20SNG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7331-20SNG-7 requirements.
6.How does Aetrix verify that AP7331-20SNG-7 is sourced from the original manufacturer or authorized distributors?
All AP7331-20SNG-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 AP7331-20SNG-7 meets industry standards.
7.What is the process for return or replacement of AP7331-20SNG-7?
All AP7331-20SNG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7331-20SNG-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 AP7331-20SNG-7 part is unused and in its original packaging.
Return procedure for AP7331-20SNG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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