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Diodes Incorporated AP7335-25SNG-7
- Part No.:
- AP7335-25SNG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7335-25SNG-7.pdf
- Description:
- IC REG LIN 2.5V 300MA 6DFN2020
- Quantity:
- Payment:
- Shipping:
Inventory:1,152
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Product details
Overview
AP7335-25SNG-7 from Diodes Incorporated is a fixed-output 2.5V, 300mA low-dropout linear regulator in DFN2020-6 package, featuring 35μA quiescent current, 150mV dropout at full load, 65dB PSRR at 1kHz, and fast 220μs startup. It integrates enable control, thermal shutdown, current limiting, and short-circuit protection for battery-powered portable electronics.
For engineers reviewing the AP7335-25SNG-7 datasheet, AP7335-25SNG-7 pinout, AP7335-25SNG-7 application, or AP7335-25SNG-7 equivalent, key selection criteria include output voltage accuracy (±2%), load regulation (±0.6%), input voltage range (2V–6V), stability with 1μF ceramic output capacitor, and thermal performance in compact DFN2020-6 footprint.
Technical Context
The AP7335-25SNG-7 implements a PMOS pass transistor architecture enabling ultra-low quiescent current and fast transient response. Its internal 0.8V bandgap reference and error amplifier regulate output precisely across -40°C to +85°C ambient temperature.
Enable logic operates with VIH ≥ 1.4V and VIL ≤ 0.4V; thermal shutdown activates at 145°C with 15°C hysteresis. The device sustains stable regulation from no-load to 300mA without minimum load requirement and remains stable with output capacitors ≥1μF and ESR >15mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - ensures precise rail generation for 2.5V logic or analog circuitry |
| Max Output Current | 300mA - supports moderate-power subsystems like Bluetooth baseband or sensor interfaces |
| Dropout Voltage | 150mV at 300mA - enables operation down to VIN = 2.65V while maintaining regulation |
| Quiescent Current | 35μA typical - extends battery life in always-on or low-duty-cycle portable devices |
| PSRR | 65dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding the LDO input |
| Startup Time | 220μs - allows rapid power-up of peripherals during wake-from-sleep sequences |
| Thermal Shutdown | 145°C threshold with 15°C hysteresis - provides self-recovery protection under sustained overload or poor PCB thermal design |
Pinout & Package
AP7335-25SNG-7 uses the DFN2020-6 (2.0mm × 2.0mm, 0.65mm pitch) package with wettable flank leads and exposed thermal pad. Pin 1 (EN) is top-left when marking dot is oriented top-left; pin 6 (NC) is bottom-right.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 3) | Input voltage supply | Accepts 2V–6V; requires ≥1μF ceramic bypass capacitor placed adjacent to pin for noise immunity |
| GND (Pin 2) | Power ground reference | Common return path for IN, OUT, EN, and thermal pad; must connect to solid ground plane |
| EN (Pin 1) | Enable control input | Active-high logic; drives regulator ON when ≥1.4V, OFF when ≤0.4V; tie to IN if always-on operation required |
| OUT (Pin 4) | Regulated output | Delivers stable 2.5V; requires ≥1μF ceramic output capacitor with ESR >15mΩ for stability |
| NC (Pin 5) | No connection | Internally unconnected; must remain floating - not to be tied to GND or any other node |
| NC (Pin 6) | No connection | Internally unconnected; must remain floating - not to be tied to GND or any other node |
Key Features
| Feature | Design Value |
|---|---|
| Low IQ operation | 35μA typical - reduces standby power loss by >90% vs. legacy LDOs, critical for coin-cell or Li-ion backup rails |
| Fast transient response | Stable 20mV undershoot/overshoot during 10mA→300mA load steps - maintains DSP core or RF IC supply integrity in GSM TDMA bursts |
| Ultra-fast startup | 220μs - enables synchronized power sequencing with microcontrollers that exit deep sleep in sub-millisecond timeframes |
| Robust fault protection | Integrated current limit (600mA), short-circuit clamp (140mA), and thermal shutdown (145°C) - eliminates need for external protection circuitry |
| Small-footprint packaging | DFN2020-6 (4mm² area) - saves board space in multi-rail portable designs where 2.5V is used for camera modules or audio codecs |
Applications
| Smartphone Baseband Power | Bluetooth Audio SoC Supply |
|---|---|
|
Use Scenario: Powers 2.5V I/O or analog section of smartphone application processor during active and burst transmission modes. IC Role / Device Role / Timing Role: Primary low-noise, fast-response LDO delivering clean 2.5V rail to baseband subsystems with dynamic current demand up to 300mA. Use Value: Maintains <±20mV output deviation during 100μs load transients, preventing data corruption in high-speed serial interfaces tied to the same rail. |
Use Scenario: Supplies regulated 2.5V to Bluetooth 5.x audio SoC (e.g., CSR8675) in wireless earbuds with tight thermal constraints. IC Role / Device Role / Timing Role: Always-on LDO with EN controlled by host MCU to gate power during idle periods, reducing average system current. Use Value: 35μA IQ enables >100-hour standby on 100mAh battery; 220μs startup synchronizes with Bluetooth link re-establishment latency. |
| Portable Medical Sensor Node | Industrial Handheld Scanner |
|
Use Scenario: Provides stable 2.5V reference and analog front-end supply for low-power ECG or pulse oximetry sensor ASICs. IC Role / Device Role / Timing Role: Precision LDO ensuring ADC reference stability and analog signal chain SNR over temperature (-40°C to +85°C). Use Value: ±2% output accuracy and <0.2%/V line regulation preserve measurement fidelity despite battery voltage sag from 4.2V to 3.0V. |
Use Scenario: Powers 2.5V logic and laser driver interface in ruggedized barcode scanner operating from 3.7V Li-ion battery. IC Role / Device Role / Timing Role: Input-supervised LDO with thermal shutdown protecting against prolonged trigger-activated laser duty cycles. Use Value: 150mV dropout allows continuous operation until battery reaches 2.65V, maximizing usable capacity per charge cycle. |
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, SOT23-3 package, no enable pin | Lacks EN control and thermal shutdown; limited to ultra-low-IQ always-on use cases | Select only when enable functionality is unnecessary and load current stays below 250mA |
| Torex XC6206P252MR-G | 250mA max output, 1μA IQ, SOT23-5 package, no thermal shutdown | Lower IQ but no fault protection; requires external thermal management for >150mA loads | Prefer for energy-harvesting systems where IQ dominates lifetime, not for battery-powered consumer devices |
Compared with MCP1700-2502E/TO and XC6206P252MR-G, AP7335-25SNG-7 uniquely balances 300mA capability, 35μA IQ, integrated EN, and full fault protection in a 4mm² DFN - making it optimal for space-constrained, safety-aware portable designs requiring robustness beyond basic regulation.
Availability
AP7335-25SNG-7 is available at Aetrix Electronics and suitable for smartphone baseband power, Bluetooth audio SoC supply, portable medical sensor nodes, and industrial handheld scanners requiring stable component supply with guaranteed long-term continuity.
Supply support for AP7335-25SNG-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 family designed specifically for battery-powered portable electronics demanding high efficiency, fast transient response, and comprehensive protection in minimal footprint.
FAQ
What is the minimum input voltage required for AP7335-25SNG-7 to maintain 2.5V output at 300mA?
The minimum input voltage is calculated as VOUT + VDROP = 2.5V + 0.15V = 2.65V. Per datasheet specifications, dropout voltage is 150mV at 300mA for VOUT ≥ 2.5V. Operation below 2.65V results in unregulated output, and the absolute minimum VIN rating is 2.0V - but regulation cannot be guaranteed below 2.65V under full load.
Can AP7335-25SNG-7 operate without an output capacitor?
No. The device requires a minimum 1μF ceramic output capacitor with ESR >15mΩ for stability. Omitting the output capacitor causes oscillation and unregulated output. The datasheet explicitly states stability is ensured only with ≥1μF ceramic capacitor on OUT, and recommends placing it as close as possible to the OUT and GND pins.
Is the NC pin on AP7335-25SNG-7 electrically isolated or should it be grounded?
Pin 5 and Pin 6 are both marked NC (No Connection) and are internally unconnected. They must remain floating - neither grounded nor tied to any voltage. Connecting them may cause unpredictable behavior or damage. The DFN2020-6 package drawing confirms these pins have no internal bond wire or die connection.
How does thermal shutdown behave during sustained overload conditions?
When junction temperature reaches ~145°C, the device disables the output and enters thermal shutdown. It remains off until temperature drops to ~130°C (15°C hysteresis), then automatically resumes regulation. Under continuous overload, this causes on/off cycling - a protective mechanism that limits average power dissipation and prevents permanent damage.
AP7335-25SNG-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):
- 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:
- U-DFN2020-6
AP7335-25SNG-7 FAQ
1.How can I place an order for AP7335-25SNG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335-25SNG-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 AP7335-25SNG-7 reliable?
The price and inventory of AP7335-25SNG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335-25SNG-7 is usually 5 days.
3.What payment methods are accepted for AP7335-25SNG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-25SNG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7335-25SNG-7?
AP7335-25SNG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335-25SNG-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 AP7335-25SNG-7?
For technical support, including AP7335-25SNG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-25SNG-7 requirements.
6.How does Aetrix verify that AP7335-25SNG-7 is sourced from the original manufacturer or authorized distributors?
All AP7335-25SNG-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 AP7335-25SNG-7 meets industry standards.
7.What is the process for return or replacement of AP7335-25SNG-7?
All AP7335-25SNG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-25SNG-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 AP7335-25SNG-7 part is unused and in its original packaging.
Return procedure for AP7335-25SNG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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