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Diodes Incorporated AP7335-20WG-7
- Part No.:
- AP7335-20WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7335-20WG-7.pdf
- Description:
- IC REG LINEAR 2V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,504
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Product details
Overview
AP7335-20WG-7 from Diodes Incorporated is a fixed-output 2.0V, 300mA low-dropout linear regulator with 35μA quiescent current, 150mV dropout at full load, EN pin control, and stable operation with 1μF ceramic output capacitor. It targets battery-powered portable electronics requiring ultra-low power consumption and fast transient response, such as Bluetooth headsets and MP3 players.
For engineers reviewing the AP7335-20WG-7 datasheet, AP7335-20WG-7 pinout, AP7335-20WG-7 application, or AP7335-20WG-7 equivalent, key selection criteria include its 2.0V fixed output, SOT25 package footprint, 2V–6V input range, thermal shutdown threshold at 145°C, and compatibility with low-ESR ceramic capacitors for compact, reliable power delivery in space-constrained designs.
Technical Context
The AP7335-20WG-7 integrates a PMOS pass element, precision 0.8V bandgap reference, error amplifier, and protection circuitry including current limit (~600mA), short-circuit clamp (~140mA), and thermal shutdown with 15°C hysteresis. Its architecture enables fast start-up (220μs) and excellent load transient response without external compensation.
It operates across –40°C to +85°C ambient, supports no-load stability, and maintains ±2% output voltage accuracy over temperature and line/load variations. The EN pin provides logic-level on/off control with VIH = 1.4V and VIL = 0.4V, enabling seamless integration into power sequencing systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0V ±2% - ensures precise biasing for 2.0V I/O domains or core rails in portable SoCs. |
| Max Output Current | 300mA continuous - sufficient to power baseband processors, audio codecs, or RF front-ends in handheld devices. |
| Quiescent Current | 35μA typical - minimizes standby power loss, extending battery life in always-on sensor or Bluetooth subsystems. |
| Dropout Voltage | 150mV at 300mA (VOUT ≥ 2.5V); 170mV typ. at 2.0V/300mA - enables regulation from 2.2V input, critical for single-cell Li-ion or Li-poly systems. |
| PSRR | 65dB at 1kHz - suppresses switching noise from adjacent DC-DC converters, preserving signal integrity in audio/analog sections. |
| Start-up Time | 220μs - allows rapid power cycling of peripherals during burst-mode operation in GSM/TDMA protocols. |
| Thermal Shutdown | 145°C trigger with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
SOT25 package (3.0mm × 1.7mm × 1.3mm), RoHS-compliant, green molding compound, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 2V–6V; requires ≥1μF ceramic bypass to GND close to pin for stability and noise rejection. |
| 2 (GND) | Power ground reference | Common return path for IN, OUT, EN, and internal circuitry; must be low-impedance connection to PCB ground plane. |
| 3 (EN) | Enable control input | Active-high logic interface; ties to VIN for always-on operation or driven by MCU GPIO for dynamic power gating. |
| 4 (NC) | No connection | Internally unconnected; must remain floating-no PCB trace or solder mask opening required. |
| 5 (OUT) | Regulated output | Delivers stable 2.0V; requires ≥1μF ceramic capacitor to GND with ESR >15mΩ for guaranteed stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 35μA quiescent current enables >1-year battery life in coin-cell–powered IoT sensors with periodic wake-up. |
| Fast transient response | Stable under 0→300mA load steps with <20mV undershoot/overshoot - supports real-time DSP and GSM burst-mode loads. |
| Single-capacitor stability | Guaranteed stable with only 1μF ceramic output capacitor - eliminates need for costly tantalum or large MLCC arrays. |
| Integrated protection suite | Current limit, short-circuit clamp, and thermal shutdown operate autonomously without external components or firmware. |
| Wide input voltage range | 2V–6V operation accommodates single-cell Li-ion (2.7–4.2V), LiFePO₄ (2.0–3.6V), or dual-AA alkaline (1.2–3.0V) sources. |
Applications
| Bluetooth Headset Power | MP3 Player Audio Core |
|---|---|
Use Scenario: Powers Bluetooth radio IC and microphone preamp in compact wireless earbuds with 3.7V Li-ion battery. IC Role / Device Role / Timing Role: Primary 2.0V LDO supplying RF transceiver and analog front-end; enables fast enable/disable synchronized with Bluetooth link state. Use Value: 35μA IQ extends talk time by >15% vs. conventional LDOs; 220μs start-up ensures zero-audio-gap during call handover. | Use Scenario: Supplies 2.0V bias to DAC, headphone amplifier, and flash memory interface in portable media player. IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source for analog audio path; decouples digital switching noise from sensitive audio stages. Use Value: 65dB PSRR at 1kHz reduces audible switching artifacts; 150mV dropout allows operation down to 2.15V battery voltage. |
| Smartphone Subsystem Rail | Wearable Sensor Hub |
Use Scenario: Provides dedicated 2.0V rail for ambient light/proximity sensor and haptic driver in smartphone bezel area. IC Role / Device Role / Timing Role: Local point-of-load regulator with independent EN control, isolated from main PMIC for low-latency sensor activation. Use Value: NC pin simplifies layout in tight mechanical constraints; SOT25 footprint fits <2mm² board area with minimal thermal pad requirements. | Use Scenario: Powers ultra-low-power accelerometer, gyroscope, and BLE SoC in fitness tracker with CR2032 coin cell. IC Role / Device Role / Timing Role: Always-on LDO maintaining 2.0V supply during deep-sleep mode; EN pin disabled only during firmware updates. Use Value: 35μA IQ dominates system sleep current, enabling >6-month battery life; -40°C to 85°C rating covers outdoor wearable use cases. |
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, 600mV dropout at 250mA, TO-92 package | Larger footprint, lower current, unsuitable for 300mA burst loads | Select only for ultra-low-IQ legacy designs where 250mA peak suffices and through-hole assembly is required. |
| Torex XC6206P202MR-G | 300mA, 1.0μA IQ, 350mV dropout at 300mA, SOT-25 package | Lower IQ but higher dropout limits usable input range to ≥2.35V | Prefer when battery voltage stays above 2.35V and standby current is more critical than dropout performance. |
Compared with MCP1700-2002E/TO and XC6206P202MR-G, the AP7335-20WG-7 uniquely balances 300mA capability, 150mV dropout, and 35μA IQ in SOT25-making it optimal for modern Li-ion–powered portable devices needing both high efficiency and wide input flexibility.
Availability
AP7335-20WG-7 is available at Aetrix Electronics and suitable for Bluetooth headset power management, MP3 player audio core regulation, and wearable sensor hub applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP7335-20WG-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 for power management, signal integrity, and connectivity applications.
The AP7335 belongs to Diodes' low-quiescent-current LDO product line, engineered specifically for battery-operated portable electronics demanding high efficiency, small form factor, and robust protection in thermally constrained environments.
FAQ
What is the minimum input voltage required for AP7335-20WG-7 to maintain 2.0V output at 300mA?
The minimum input voltage is 2.17V, calculated from the typical 170mV dropout voltage at 300mA and 2.0V nominal output. At –40°C, dropout may rise to 300mV, requiring ≥2.3V input for guaranteed regulation. Input must remain ≥2.0V per absolute maximum ratings.
Can AP7335-20WG-7 be used without an output capacitor?
No. A minimum 1μF ceramic output capacitor with ESR >15mΩ is mandatory for stability per the datasheet. Omitting it causes oscillation and potential device failure. Larger capacitance improves transient response but does not replace the 1μF minimum requirement.
Is the NC pin on AP7335-20WG-7 electrically connected internally?
No. Pin 4 is designated NC (No Connection) in all SOT25 variants of AP7335-20WG-7 and is not bonded or connected to any internal circuitry. It must remain unconnected on the PCB-no trace, via, or solder mask opening should be placed on this pad.
How does thermal shutdown behave during sustained overload?
When junction temperature reaches ~145°C, the output disables and remains off until temperature drops to ~130°C due to 15°C hysteresis. Under continuous overload, this causes thermal cycling-visible as intermittent output-protecting the device from permanent damage while signaling inadequate heatsinking or excessive power dissipation.
AP7335-20WG-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):
- 6V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7335-20WG-7 FAQ
1.How can I place an order for AP7335-20WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335-20WG-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 AP7335-20WG-7 reliable?
The price and inventory of AP7335-20WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335-20WG-7 is usually 5 days.
3.What payment methods are accepted for AP7335-20WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-20WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7335-20WG-7?
AP7335-20WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335-20WG-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 AP7335-20WG-7?
For technical support, including AP7335-20WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-20WG-7 requirements.
6.How does Aetrix verify that AP7335-20WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7335-20WG-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 AP7335-20WG-7 meets industry standards.
7.What is the process for return or replacement of AP7335-20WG-7?
All AP7335-20WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-20WG-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 AP7335-20WG-7 part is unused and in its original packaging.
Return procedure for AP7335-20WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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