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Diodes Incorporated AP7335-12WG-7
- Part No.:
- AP7335-12WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7335-12WG-7.pdf
- Description:
- IC REG LINEAR 1.2V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,618
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Product details
Overview
AP7335-12WG-7 from Diodes Incorporated is a fixed-output 1.2V, 300mA low-dropout linear regulator with 35μA quiescent current, 150mV dropout at full load, 65dB PSRR at 1kHz, and fast 220μs startup time. It integrates enable control, thermal shutdown, and current limiting, and is designed for power-sensitive portable electronics requiring stable low-voltage biasing.
For engineers reviewing the AP7335-12WG-7 datasheet, AP7335-12WG-7 pinout, AP7335-12WG-7 application, or AP7335-12WG-7 equivalent, this page delivers verified electrical parameters, SOT25 package mapping, EN-controlled LDO behavior, transient response data, and real-world use cases in battery-powered audio and communication subsystems.
Technical Context
The AP7335-12WG-7 implements a PMOS pass transistor architecture enabling ultra-low quiescent current (35μA typ.) while maintaining fast load transient recovery (<100μs undershoot/overshoot) and high PSRR (65dB @1kHz). Its internal 0.8V reference and precision trimming ensure ±2% output accuracy across –40°C to +85°C ambient.
Enable logic operates with VIH ≥1.4V and VIL ≤0.4V, supporting direct connection to 1.8V/3.3V GPIOs. The device remains stable with 1μF ceramic output capacitors (ESR >15mΩ), eliminating need for bulk capacitance in space-constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2% over –40°C to +85°C - ensures reliable core voltage for low-power MCUs and RF ICs |
| Max Output Current | 300mA continuous - supports single-rail power for Bluetooth baseband, sensor hubs, and display drivers |
| Quiescent Current | 35μA typical - extends battery life in always-on wearable sensors and IoT edge nodes |
| Dropout Voltage | 150mV at 300mA (VOUT ≥2.5V); 170mV at 300mA (VOUT <2.5V) - enables operation down to VIN = 1.35V for 1.2V output |
| PSRR | 65dB at 1kHz - suppresses switching noise from adjacent DC-DC converters in mixed-signal PCBs |
| Startup Time | 220μs - meets GSM/TDMA burst-mode timing requirements for rapid power cycling |
| Thermal Shutdown | Triggers at 145°C with 15°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
Pinout & Package
SOT25 (5-pin) package with exposed pad not electrically connected; JEDEC MO-203AA compliant; 1.6mm × 2.9mm footprint; 1.1mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input voltage supply | Accepts 2V–6V; requires ≥1μF ceramic bypass capacitor placed adjacent to pin for stability |
| 2: GND | Power ground reference | Common return path for input/output currents; must connect to low-impedance ground plane |
| 3: EN | Enable control input | Active-high logic; drives regulator ON when ≥1.4V; pulls output to high-impedance OFF state when ≤0.4V |
| 4: NC | No connection | Internally unconnected; must remain floating or grounded per layout guidelines - no routing or soldering |
| 5: OUT | Regulated output | Delivers 1.2V ±2%; requires ≥1μF ceramic capacitor with ESR >15mΩ directly between OUT and GND |
Key Features
| Feature | Design Value |
|---|---|
| Low IQ operation | 35μA typical input current enables >1-year battery life in coin-cell–powered BLE beacons |
| Fast transient response | Stabilizes within 100μs after 0→300mA load step - maintains <±30mV deviation for DSP core supply |
| Integrated protection | Current limit (~600mA), short-circuit clamp (~140mA), and thermal shutdown (145°C) prevent field failures |
| Small-footprint packaging | SOT25 (1.6×2.9mm) allows placement near noise-sensitive analog/RF ICs without board area penalty |
| Green RoHS compliance | Lead-free, Br/Sb-free molding compound meets EU Directive 2002/95/EC exemptions |
Applications
| Bluetooth Audio Subsystem | GSM Baseband Power Rail |
|---|---|
|
Use Scenario: Powers DAC, codec, and Class-D amplifier in wireless earbuds with 3.7V Li-ion input. IC Role / Device Role / Timing Role: Primary 1.2V LDO for digital audio processing block; enabled synchronously with Bluetooth link establishment. Use Value: 35μA IQ minimizes standby drain; 220μs startup aligns with Bluetooth controller wake-up latency. |
Use Scenario: Supplies 1.2V core voltage to GSM transceiver baseband IC during TDMA transmit bursts. IC Role / Device Role / Timing Role: Fast-transient LDO delivering clean 1.2V under 100mA→300mA dynamic load steps every 4.615ms. Use Value: 65dB PSRR rejects 217Hz envelope ripple from PA switching; 150mV dropout sustains regulation at end-of-life battery voltage. |
| Wearable Sensor Hub | Industrial Wireless Node |
|
Use Scenario: Provides regulated 1.2V to ultra-low-power MCU and MEMS accelerometer in fitness tracker. IC Role / Device Role / Timing Role: Always-on bias rail with EN controlled by motion-detection interrupt; enters zero-current shutdown when inactive. Use Value: 0.1μA shutdown current (ISHDN) extends shelf life; ±2% accuracy ensures consistent ADC reference scaling. |
Use Scenario: Powers LoRaWAN transceiver MCU core in battery-operated smart meter endpoint. IC Role / Device Role / Timing Role: Secondary LDO generating 1.2V from 3.3V system rail; activated only during scheduled transmission windows. Use Value: Thermal shutdown (145°C) prevents failure in sealed enclosures; SOT25 package fits narrow PCB slots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1202E/TT | 250mA max output, 1.8μA IQ, 600mV dropout at 250mA - lower IQ but higher dropout and reduced current capability | Limited to sub-250mA loads; unsuitable for GSM burst-mode peaks requiring 300mA | Select only for ultra-long-life applications where peak current never exceeds 250mA and input voltage ≥2.5V |
| TPS7A0512PDBVR | 200mA max output, 25μA IQ, 175mV dropout at 200mA - tighter 1% tolerance but lower current rating | Cannot support 300mA GSM transmit pulses; requires larger input margin due to higher dropout | Preferable only when ±1% output accuracy is mandatory and load stays below 200mA |
Compared with MCP1700T-1202E/TT and TPS7A0512PDBVR, the AP7335-12WG-7 uniquely balances 300mA delivery, 35μA IQ, and 150mV dropout - making it the only option among the three capable of sustaining GSM TDMA transmit bursts without brownout or thermal throttling.
Availability
AP7335-12WG-7 is available at Aetrix Electronics and suitable for Bluetooth headset power management, GSM baseband biasing, and wearable sensor hub applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP7335-12WG-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 manufacturer specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and connectivity applications.
The AP7335 series belongs to Diodes' low-quiescent-current LDO portfolio, engineered specifically for battery-powered portable electronics demanding fast transient response, minimal standby drain, and robust fault protection.
FAQ
What is the minimum input voltage required for AP7335-12WG-7 to maintain regulation at 300mA load?
The AP7335-12WG-7 requires VIN ≥ VOUT + VDropout = 1.2V + 0.17V = 1.37V minimum. However, per Absolute Maximum Ratings and Recommended Operating Conditions, the valid input range starts at 2.0V - so 2.0V is the practical minimum to guarantee specification compliance, stability, and protection circuit functionality across temperature and process variation.
Can AP7335-12WG-7 operate without an output capacitor?
No. The AP7335-12WG-7 requires a minimum 1μF ceramic output capacitor with ESR >15mΩ for stability, as confirmed in the Application Notes section. Omitting COUT causes oscillation and unregulated output, especially under dynamic load conditions. The device is not internally compensated for no-capacitor operation.
Is the NC pin on AP7335-12WG-7 electrically isolated or tied to die substrate?
The NC (pin 4) on AP7335-12WG-7 is internally unconnected - no bond wire, no metal trace, no junction tie. Diodes Incorporated's Pin Descriptions table explicitly states "No connection" and advises leaving it floating or grounded per layout best practices; it is not tied to substrate or any internal node.
Does AP7335-12WG-7 support reverse current blocking when EN is low?
Yes. When EN is pulled low (≤0.4V), the AP7335-12WG-7 disables the pass element and places OUT in high-impedance state, preventing reverse current flow from OUT to IN. This is confirmed by ISHDN = 0.1–1μA shutdown current spec and functional block diagram showing gate driver disable under EN=low.
AP7335-12WG-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):
- 1.2V
- 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
AP7335-12WG-7 FAQ
1.How can I place an order for AP7335-12WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335-12WG-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 AP7335-12WG-7 reliable?
The price and inventory of AP7335-12WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335-12WG-7 is usually 5 days.
3.What payment methods are accepted for AP7335-12WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-12WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7335-12WG-7?
AP7335-12WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335-12WG-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 AP7335-12WG-7?
For technical support, including AP7335-12WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-12WG-7 requirements.
6.How does Aetrix verify that AP7335-12WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7335-12WG-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 AP7335-12WG-7 meets industry standards.
7.What is the process for return or replacement of AP7335-12WG-7?
All AP7335-12WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-12WG-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 AP7335-12WG-7 part is unused and in its original packaging.
Return procedure for AP7335-12WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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