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Diodes Incorporated AP7335-SNG-7
- Part No.:
- AP7335-SNG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7335-SNG-7.pdf
- Description:
- IC REG LIN POS ADJ 300MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,870
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Product details
Overview
AP7335-SNG-7 from Diodes Incorporated is a 300mA adjustable-output low-dropout linear regulator in DFN2020-6 package, featuring 35μA quiescent current, 150mV dropout at 300mA, 65dB PSRR at 1kHz, and fast 220μs startup. It operates across 2V–6V input and supports 0.8V–5.0V output via external resistor divider, with built-in thermal shutdown, current limit, and short-circuit protection for battery-powered portable electronics.
For engineers reviewing the AP7335-SNG-7 datasheet, AP7335-SNG-7 pinout, AP7335-SNG-7 application, or AP7335-SNG-7 equivalent, key selection criteria include ultra-low IQ for standby efficiency, fast transient response for GSM/Bluetooth baseband loads, stability with 1μF ceramic output capacitor, and EN-controlled sequencing in space-constrained mobile designs.
Technical Context
The AP7335-SNG-7 implements a PMOS pass transistor architecture enabling low dropout and near-zero gate drive current, paired with a precision 0.8V internal bandgap reference and error amplifier optimized for fast load transient recovery. Its enable logic uses CMOS-compatible thresholds (VIH = 1.4V, VIL = 0.4V) and delivers sub-1μA shutdown current.
Stability is ensured with minimal 1μF ceramic output capacitance (ESR ≥15mΩ), eliminating need for bulk electrolytics. The device maintains regulation from no-load to full 300mA while supporting wide ambient temperature range (−40°C to +85°C) and junction temperatures up to 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 300mA continuous - supports single-rail power for DSP, RF transceivers, and microcontrollers |
| Quiescent Current | 35μA typical - enables >1-year battery life in always-on sensor nodes with 200mAh coin cell |
| Dropout Voltage | 150mV at 300mA (VOUT ≥2.5V) - allows operation down to 2.65V input for 2.5V rail from single Li-ion cell |
| PSRR | 65dB at 1kHz - suppresses switching noise from adjacent DC-DC converters in mixed-signal PCBs |
| Startup Time | 220μs - meets GSM TDMA burst timing requirements for rapid wake-up from deep sleep |
| Input Voltage Range | 2V to 6V - compatible with single-cell Li-ion (2.7–4.2V), LiFePO₄ (2.0–3.6V), and 3.3V/5V system rails |
| Thermal Shutdown | 145°C threshold with 15°C hysteresis - prevents latch-up during sustained overload in sealed enclosures |
Pinout & Package
AP7335-SNG-7 is housed in a 2.0mm × 2.0mm × 0.6mm DFN2020-6 package with exposed thermal pad (pin 2), optimized for high-density portable PCB layouts and thermal performance (θJA = 251°C/W on FR-4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 3) | Power input | Accepts 2V–6V; requires local 1μF ceramic decoupling to GND for noise immunity |
| GND (Pin 2) | Ground reference & thermal path | Connects to PCB thermal plane; critical for thermal shutdown accuracy and EMI reduction |
| EN (Pin 1) | Enable control | Active-high logic input; ties to VIN for always-on operation or MCU GPIO for dynamic power gating |
| OUT (Pin 4) | Regulated output | Delivers stable voltage; bypassed with 1μF ceramic cap placed adjacent to pin for transient response |
| ADJ (Pin 6) | Feedback reference | Connects to resistor divider; sets output via VOUT = 0.8V × (1 + R1/R2); R2 ≤ 80kΩ for stability |
| NC (Pins 5 & ?) | No connection | Unbonded die pads; must remain floating or grounded per layout guidelines to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 35μA enables >10-year shelf life in IoT sensors powered by primary lithium batteries |
| Fast transient response | Stabilizes within 100μs after 10mA→300mA load step - prevents brownout in Bluetooth audio codecs |
| Low-ESR capacitor compatibility | Stable with 1μF ceramic (ESR ≥15mΩ) - eliminates need for larger, higher-cost tantalum or polymer caps |
| Integrated protection | Current limit (600mA), short-circuit clamp (140mA), and thermal shutdown (145°C) prevent field failures without external circuitry |
| Adjustable output range | 0.8V–5.0V via two-resistor divider - supports core voltages for ARM Cortex-M, FPGA I/O, and analog front-ends |
Applications
| Smartphone Baseband Power | Wireless Headset Audio Codec |
|---|---|
Use Scenario: Powers baseband processor during GSM TDMA transmit bursts with 12.5% duty cycle. IC Role / Device Role / Timing Role: LDO providing clean 1.8V supply with <20mV undershoot during 0→300mA load transitions. Use Value: 220μs startup and fast transient response eliminate need for oversized output capacitance, saving board area. | Use Scenario: Supplies 3.3V to Bluetooth audio codec IC in compact earbud PCB. IC Role / Device Role / Timing Role: Primary voltage regulator with EN pin synchronized to host MCU sleep/wake cycles. Use Value: 35μA IQ extends recharge interval by 30% vs. standard LDOs in always-listening voice assistant mode. |
| Portable Medical Sensor Node | Industrial Handheld Scanner |
Use Scenario: Powers ultra-low-power ECG front-end ASIC from CR2032 coin cell. IC Role / Device Role / Timing Role: Adjustable 1.2V output LDO enabling precise core voltage tuning for ADC SNR optimization. Use Value: 0.8V reference and ±2% output accuracy ensure consistent analog signal chain gain across temperature. | Use Scenario: Delivers 2.8V to laser driver and image sensor in barcode scanner with intermittent operation. IC Role / Device Role / Timing Role: Enable-controlled power rail that powers down peripherals between scan events. Use Value: Thermal shutdown and current limit protect against accidental short during ruggedized field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | Fixed 3.3V output only; 2.5μA IQ; 600mV dropout at 250mA | Lacks adjustability and fast transient capability; suited for static low-IQ bias rails | Select when fixed output suffices and lowest possible standby current is critical |
| Torex XC6219B332MR-G | 300mA; 1.0μA IQ; 200mV dropout at 300mA; no EN pin | Requires external enable circuitry; slower 1ms startup limits TDMA use | Choose for ultra-low-power always-on monitoring where EN control is unnecessary |
Compared with MCP1703T-3302E/MB and XC6219B332MR-G, AP7335-SNG-7 uniquely balances ultra-fast transient response (220μs), adjustable output, and low 35μA IQ-making it optimal for dynamically powered portable systems requiring both efficiency and responsiveness.
Availability
AP7335-SNG-7 is available at Aetrix Electronics and suitable for smartphone baseband power, wireless headset audio codecs, portable medical sensor nodes, and industrial handheld scanners requiring stable component supply with guaranteed long-term continuity.
Supply support for AP7335-SNG-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 ICs for power management, signal integrity, and connectivity applications.
The AP7335 belongs to Diodes' high-performance LDO portfolio designed specifically for battery-constrained portable electronics demanding ultra-low IQ, fast transient response, and robust protection in miniature packages.
FAQ
What is the minimum output capacitor required for stability with AP7335-SNG-7?
The AP7335-SNG-7 is stable with a minimum 1μF ceramic output capacitor having ESR ≥15mΩ. Lower-ESR capacitors (e.g., X7R/X5R MLCC) are preferred; placement must be adjacent to OUT and GND pins. Larger values improve transient response but are not required for basic stability.
Can AP7335-SNG-7 be used with a 1.5V input to generate 1.2V output?
No. The minimum input voltage is 2.0V per datasheet specifications. At 1.5V input, the device cannot regulate - dropout voltage alone exceeds the headroom (150mV minimum + margin). For 1.2V output, VIN must be ≥2.0V, ideally ≥2.3V for reliable PSRR and load regulation.
How does the ADJ pin function in the AP7335-SNG-7 feedback network?
The ADJ pin connects to the center node of an R1–R2 resistor divider between OUT and GND. Output voltage is set by VOUT = 0.8V × (1 + R1/R2). R2 must be ≤80kΩ to maintain reference stability; typical values are R2 = 100kΩ and R1 = 150kΩ for 2.0V output.
Is the DFN2020-6 package of AP7335-SNG-7 RoHS-compliant and lead-free?
Yes. AP7335-SNG-7 uses a lead-free finish and "Green" molding compound (no Br or Sb), fully compliant with EU Directive 2002/95/EC (RoHS). The "G" suffix in the part number explicitly denotes RoHS compliance per Diodes Incorporated's ordering nomenclature.
AP7335-SNG-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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- 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-SNG-7 FAQ
1.How can I place an order for AP7335-SNG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335-SNG-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-SNG-7 reliable?
The price and inventory of AP7335-SNG-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-SNG-7 is usually 5 days.
3.What payment methods are accepted for AP7335-SNG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-SNG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7335-SNG-7?
AP7335-SNG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335-SNG-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-SNG-7?
For technical support, including AP7335-SNG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-SNG-7 requirements.
6.How does Aetrix verify that AP7335-SNG-7 is sourced from the original manufacturer or authorized distributors?
All AP7335-SNG-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-SNG-7 meets industry standards.
7.What is the process for return or replacement of AP7335-SNG-7?
All AP7335-SNG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-SNG-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-SNG-7 part is unused and in its original packaging.
Return procedure for AP7335-SNG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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