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Diodes Incorporated AP7335-25WG-7
- Part No.:
- AP7335-25WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7335-25WG-7.pdf
- Description:
- IC REG LINEAR 2.5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
AP7335-25WG-7 from Diodes Incorporated is a fixed-output 2.5V, 300mA low-dropout linear regulator with enable control, 35μA quiescent current, 150mV dropout at full load, and stable operation with 1μF ceramic output capacitor. It serves as a primary power supply for core logic rails in portable battery-powered systems requiring fast transient response and ultra-low standby power.
For engineers reviewing the AP7335-25WG-7 datasheet, AP7335-25WG-7 pinout, AP7335-25WG-7 application, or AP7335-25WG-7 equivalent, this page delivers verified electrical parameters, SOT25 package terminal mapping, thermal shutdown behavior, PSRR performance at 1kHz, and real-world use cases in GSM baseband and Bluetooth headset power domains.
Technical Context
The AP7335-25WG-7 integrates a PMOS pass element, bandgap reference, error amplifier, and protection circuitry (current limit, thermal shutdown) in a single die. Its fixed 2.5V output eliminates external feedback resistors, reducing BOM count and layout sensitivity.
It operates across 2V–6V input range with ±2% output voltage accuracy over –40°C to +85°C ambient, achieves 65dB PSRR at 1kHz under 50mA load, and delivers 220μs startup time from EN assertion - critical for duty-cycled RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - ensures stable core voltage for 2.5V I/O interfaces without external resistor network. |
| Max Output Current | 300mA continuous - supports moderate-power digital ICs such as audio codecs or BLE SoCs. |
| Quiescent Current | 35μA typical - enables >1-year battery life in always-on sensor nodes powered by coin cells. |
| Dropout Voltage | 150mV at 300mA - allows regulation from 2.65V input, extending usable range of single-cell Li-ion (2.7–4.2V) and NiMH packs. |
| PSRR @ 1kHz | 65dB - suppresses switching noise from adjacent DC/DC converters feeding shared input rail. |
| Startup Time | 220μs - synchronizes power delivery with fast-wake microcontroller sequences in TDMA burst modes. |
| Thermal Shutdown | 145°C threshold with 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
AP7335-25WG-7 uses the SOT25 (SC-74A) 5-pin surface-mount package: 2.9mm × 1.6mm × 1.1mm body, lead-free, RoHS-compliant, green molding compound. Thermal pad not present; θJA = 187°C/W on standard FR-4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2V–6V; requires ≥1μF MLCC bypass close to pin to suppress high-frequency ripple and ensure stability. |
| 2 - GND | Power ground reference | Low-impedance return path for IN, OUT, and EN; must connect directly to solid ground plane to minimize noise coupling. |
| 3 - EN | Enable control input | Active-high logic interface (VIH ≥ 1.4V); 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 routing or soldering allowed to avoid parasitic coupling. |
| 5 - OUT | Regulated output | Delivers 2.5V ±2%; requires ≥1μF ceramic capacitor with ESR >15mΩ placed adjacent to pin for transient stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 35μA enables >10-year shelf life in backup power circuits and sub-μA sleep-mode operation. |
| Fast transient response | Stable 20mV undershoot/overshoot during 10mA→300mA load steps - sustains clean supply for GSM baseband processors. |
| Integrated protection | Current limit (~600mA), short-circuit clamp (~140mA), and thermal shutdown prevent field failures in unattended devices. |
| Small-footprint packaging | SOT25 footprint fits <2.5mm² PCB area - ideal for space-constrained wearables and hearing aids. |
| Green RoHS compliance | Br/Sb-free molding compound and lead-free terminations meet EU Directive 2002/95/EC exemptions. |
Applications
| Smartphone Baseband Power | Bluetooth Headset Core Rail |
|---|---|
|
Use Scenario: Supplies 2.5V to GSM/EDGE baseband IC during transmit/receive bursts with 12.5% duty cycle. IC Role / Device Role / Timing Role: Primary LDO delivering regulated core voltage synchronized to RF enable timing. Use Value: 220μs startup and fast load transient response prevent brownout during rapid 0→300mA transitions, ensuring protocol compliance. |
Use Scenario: Powers DSP and Bluetooth radio in compact wireless earbuds operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Fixed-output LDO providing low-noise 2.5V rail independent of battery voltage sag. Use Value: 35μA quiescent current extends talk time by >15% versus legacy LDOs; 150mV dropout preserves runtime down to 2.65V battery voltage. |
| Portable Medical Sensor Node | Industrial Handheld Scanner |
|
Use Scenario: Powers ultra-low-power ADC and BLE transceiver in wearable ECG patch with coin-cell battery. IC Role / Device Role / Timing Role: Always-on voltage regulator maintaining precision analog front-end bias during intermittent BLE advertising. Use Value: ±2% output accuracy over –40°C to +85°C ensures consistent ADC reference scaling across environmental conditions. |
Use Scenario: Supplies 2.5V logic rail to barcode imager ASIC and touch controller in ruggedized handheld scanner. IC Role / Device Role / Timing Role: Robust power stage handling repeated motor-induced input transients and ESD events. Use Value: Built-in 2kV HBM ESD protection and thermal shutdown prevent field returns in drop-prone industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2502E/TO | 250mA max output, 1.6μA IQ, 600mV dropout at 250mA - lower IQ but higher dropout and reduced current capability. | Best suited for micropower sensor nodes where load never exceeds 200mA and input voltage stays >3.1V. | Select when ultra-low standby current outweighs need for 300mA headroom and fast transient response. |
| Torex XC6206P252MR-G | 300mA output, 1μA IQ, 350mV dropout at 300mA - superior IQ but significantly higher dropout and slower transient recovery. | Appropriate for static low-power modules (e.g., RTC backup) where load is constant and input voltage is well above 3.0V. | Choose only if system prioritizes nanowatt shutdown over dynamic load handling and thermal margin. |
Compared with MCP1700-2502E/TO and XC6206P252MR-G, AP7335-25WG-7 uniquely balances 300mA drive, 35μA IQ, and 150mV dropout - enabling reliable operation across wider input ranges and faster load dynamics in portable RF systems.
Availability
AP7335-25WG-7 is available at Aetrix Electronics and suitable for smartphone baseband power, Bluetooth headset core rails, portable medical sensor nodes, and industrial handheld scanners requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP7335-25WG-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 consumer, industrial, and automotive markets.
The AP7335 belongs to Diodes' low-quiescent-current LDO family, engineered specifically for battery-powered portable electronics demanding fast transient response, minimal dropout, and robust fault protection in compact form factors.
FAQ
What is the minimum input voltage required for AP7335-25WG-7 to maintain regulation at 300mA?
The minimum input voltage is 2.65V: 2.5V nominal output plus 150mV dropout voltage at 300mA load. Below this, the device enters dropout mode and output voltage drops linearly with input. The datasheet specifies 2V absolute minimum input, but regulation is only guaranteed above VOUT + VDROP.
Can AP7335-25WG-7 operate without an output capacitor?
No. A minimum 1μF ceramic output capacitor with ESR >15mΩ is mandatory for stability and transient response. Omitting it causes oscillation and voltage overshoot during load steps. The device is not unity-gain stable without this capacitor, as confirmed in the Application Notes section of DS32259 Rev. 3-2.
Is the EN pin 5V-tolerant when used with a 5V microcontroller GPIO?
Yes. The EN pin accepts up to VIN + 0.3V per Absolute Maximum Ratings, and VIN max is 6.5V. With VIN ≤ 6V, EN tolerates 5V logic levels safely. VIH threshold is 1.4V minimum, so standard 3.3V or 5V CMOS outputs fully satisfy enable requirements without level-shifting.
How does thermal shutdown behave under sustained overload?
When junction temperature reaches ~145°C, the output disables; it re-enables once temperature falls to ~130°C due to 15°C hysteresis. Under continuous overload, this causes on/off cycling - visible as output voltage pulsing at ~1–10Hz depending on PCB thermal mass. This protects the die but indicates inadequate heatsinking or excessive power dissipation.
AP7335-25WG-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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 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
AP7335-25WG-7 FAQ
1.How can I place an order for AP7335-25WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335-25WG-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 AP7335-25WG-7 reliable?
The price and inventory of AP7335-25WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335-25WG-7 is usually 5 days.
3.What payment methods are accepted for AP7335-25WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-25WG-7 transactions.
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4.How is shipping managed for AP7335-25WG-7?
AP7335-25WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335-25WG-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 AP7335-25WG-7?
For technical support, including AP7335-25WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-25WG-7 requirements.
6.How does Aetrix verify that AP7335-25WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7335-25WG-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 AP7335-25WG-7 meets industry standards.
7.What is the process for return or replacement of AP7335-25WG-7?
All AP7335-25WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-25WG-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 AP7335-25WG-7 part is unused and in its original packaging.
Return procedure for AP7335-25WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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