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Diodes Incorporated AP7335-15WG-7
- Part No.:
- AP7335-15WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7335-15WG-7.pdf
- Description:
- IC REG LINEAR 1.5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,872
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Product details
Overview
AP7335-15WG-7 from Diodes Incorporated is a fixed-output 1.5V, 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 optimized for battery-powered portable electronics requiring stable, ultra-low-power voltage regulation.
For engineers reviewing the AP7335-15WG-7 datasheet, AP7335-15WG-7 pinout, AP7335-15WG-7 application, or AP7335-15WG-7 equivalent, key selection criteria include output accuracy (±2%), load transient response stability with 1μF ceramic output capacitor, EN logic thresholds (VIH = 1.4V, VIL = 0.4V), and SOT25 package thermal resistance (187°C/W).
Technical Context
The AP7335-15WG-7 implements a PMOS pass transistor architecture enabling low dropout (150mV @ 300mA, VOUT ≥ 2.5V) and near-zero ground current during shutdown (0.1μA). Its bandgap reference (0.8V) and error amplifier deliver ±2% output voltage accuracy across –40°C to +85°C ambient.
Internal protection includes foldback current limiting (400–600mA), short-circuit clamping (~140mA), and thermal shutdown activation at 145°C with 15°C hysteresis. The device operates stably with 1μF ceramic output capacitors having ESR >15mΩ, eliminating need for bulk electrolytic support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% over –40°C to +85°C; enables direct powering of 1.5V logic or analog circuitry without external feedback resistors. |
| Max Output Current | 300mA continuous; supports single-rail power for baseband processors, Bluetooth radios, or sensor interfaces in compact portable designs. |
| Quiescent Current | 35μA typical at zero load; extends battery life in always-on or low-duty-cycle applications such as wearables and remote sensors. |
| Dropout Voltage | 150mV at 300mA (VOUT ≥ 2.5V); allows operation down to VIN = 1.65V, maximizing usable battery voltage range in single-cell Li-ion or alkaline systems. |
| PSRR | 65dB at 1kHz; suppresses switching noise from adjacent DC/DC converters, critical for noise-sensitive RF and audio subsystems. |
| Startup Time | 220μs from EN high to regulated output; enables rapid wake-up from deep sleep modes in GSM/TDMA-based devices without supply rail collapse. |
| Thermal Shutdown | Triggers at 145°C junction temperature with 15°C hysteresis; prevents permanent damage during sustained overload or poor PCB thermal layout. |
Pinout & Package
SOT25 (5-pin) package with exposed pad for thermal enhancement; footprint compatible with JEDEC MO-178AA standard; RoHS-compliant "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2V–6V input; requires ≥1μF ceramic bypass capacitor placed adjacent to pin to suppress supply noise and ensure stability. |
| 2 - GND | Power ground reference | Common return path for IN, OUT, EN, and internal circuitry; must connect to low-impedance ground plane to minimize noise coupling and thermal resistance. |
| 3 - EN | Enable control input | Active-high logic interface (VIH ≥ 1.4V, VIL ≤ 0.4V); ties directly to system MCU GPIO or power sequencer to manage LDO on/off timing. |
| 4 - NC | No connection | Internally unconnected; must remain floating-no external tie or trace routing permitted to avoid parasitic coupling or latch-up risk. |
| 5 - OUT | Regulated output | Delivers stable 1.5V ±2%; requires ≥1μF ceramic capacitor (ESR >15mΩ) placed within 2mm of pin to maintain transient response and prevent oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 35μA quiescent current enables >1-year battery life in coin-cell-powered IoT sensors operating at 1% duty cycle. |
| Fast transient response | Stable under 10mA ↔ 300mA load steps with <20mV undershoot/overshoot; sustains clean supply for burst-mode DSPs and GSM baseband ICs. |
| Low-ESR capacitor compatibility | Stable with 1μF ceramic output caps (ESR >15mΩ); eliminates need for larger, higher-ESR tantalum or aluminum electrolytics, reducing board area and cost. |
| Integrated protection | Current limit (600mA), short-circuit clamp (140mA), and thermal shutdown (145°C) operate autonomously-no external components required for fault resilience. |
| Wide input range | 2V–6V operation supports single-cell Li-ion (2.7–4.2V), LiFePO₄ (2.0–3.6V), and dual-alkaline (2.0–3.2V) battery configurations without redesign. |
Applications
| Smartphone Baseband Power | Bluetooth Audio SoC Supply |
|---|---|
Use Scenario: Powers 1.5V I/O or core rails in smartphone application processors during TDMA transmit/receive bursts. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering regulated 1.5V with sub-220μs startup and <20mV transient deviation during 0→300mA load steps. Use Value: Maintains signal integrity in RF transceivers by rejecting DC/DC ripple via 65dB PSRR and preventing brownout during GSM slot transitions. |
Use Scenario: Supplies 1.5V digital core voltage to Bluetooth 5.0 SoCs (e.g., CSR8510, DA14580) in wireless headsets. IC Role / Device Role / Timing Role: Always-on LDO enabling instant audio codec wake-up from standby; enabled synchronously with host MCU's Bluetooth stack activation. Use Value: Extends AAA battery life to >10 hours via 35μA IQ and eliminates external sequencing logic due to integrated EN control. |
| Portable Medical Sensor Node | Industrial Handheld Scanner |
Use Scenario: Regulates power for ultra-low-power biosensor signal chains (ECG, SpO₂) in FDA-cleared wearable patches. IC Role / Device Role / Timing Role: Precision 1.5V reference-grade supply with ±2% accuracy and <100μV RMS noise supporting 16-bit ADC front-ends. Use Value: Eliminates calibration drift caused by supply variation; thermal shutdown ensures safe operation during extended skin-contact wear. |
Use Scenario: Provides 1.5V logic supply to barcode image sensor and FPGA configuration memory in ruggedized handheld scanners. IC Role / Device Role / Timing Role: Robust LDO surviving repeated 15kV ESD events (HBM) and wide ambient (-40°C to +85°C) without derating. Use Value: Guarantees firmware boot reliability across temperature extremes; SOT25 package withstands mechanical shock per MIL-STD-883 Method 2007. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 250mA max output, 1.8μA IQ, 600mV dropout at 250mA; no EN pin; SOT23-3 package. | Lacks enable control and thermal shutdown; limited to ultra-low-current applications (<100mA) where fast transient response is not required. | Select only when minimal IQ dominates design priority and system-level enable sequencing is handled externally. |
| Torex XC6206P152MR-G | 300mA output, 1.0μA IQ, 350mV dropout at 300mA; no current limit or thermal shutdown; SOT23-3 package. | Higher dropout reduces usable battery range; absence of protection features mandates external fault management circuitry. | Choose only for cost-sensitive, non-safety-critical applications where thermal margin exceeds 40°C and peak load remains <200mA. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the AP7335-15WG-7 uniquely combines 300mA drive, 35μA IQ, 150mV dropout, EN control, and full protection set in a thermally enhanced SOT25-making it the only drop-in solution for battery-powered systems demanding simultaneous low power, fast response, and robustness.
Availability
AP7335-15WG-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 across automotive-grade temperature ranges and long production lifecycles.
Supply support for AP7335-15WG-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 series belongs to Diodes' low-quiescent-current LDO portfolio, engineered specifically for space-constrained, battery-operated portable electronics where efficiency, transient performance, and integrated protection are mandatory.
FAQ
What is the minimum input voltage required for AP7335-15WG-7 to regulate 1.5V output at 300mA?
The minimum input voltage is 1.65V, calculated as VOUT + VDROP = 1.5V + 0.15V. However, the absolute minimum specified input is 2.0V per datasheet operating conditions-below this, regulation, PSRR, and transient performance are not guaranteed. For reliable 300mA operation, VIN ≥ 2.0V is mandatory.
Can AP7335-15WG-7 operate without an output capacitor?
No. The device requires a minimum 1μF ceramic output capacitor with ESR >15mΩ for stability. Omitting it causes oscillation and output voltage collapse under load. The capacitor must be placed within 2mm of the OUT and GND pins using short, wide traces to maintain loop integrity and fast transient response.
Does the EN pin require a pull-up resistor when used in always-on configurations?
No. When enable functionality is unused, the EN pin must be tied directly to the IN pin-not through a resistor-to ensure VIH ≥ 1.4V across the full input range (2V–6V). A resistor divider or weak pull-up risks violating the VIH threshold at low VIN, causing unintended shutdown.
How does thermal shutdown behave under sustained overload conditions?
At junction temperature ≥145°C, the output disables and remains off until temperature falls to ~130°C (15°C hysteresis). Under continuous overload, this causes thermal cycling-repeated on/off toggling-which limits average power dissipation but may disrupt downstream circuitry. Proper PCB copper pour and thermal vias are essential to avoid entering this mode.
AP7335-15WG-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):
- 1.5V
- 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
AP7335-15WG-7 FAQ
1.How can I place an order for AP7335-15WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335-15WG-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 AP7335-15WG-7 reliable?
The price and inventory of AP7335-15WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335-15WG-7 is usually 5 days.
3.What payment methods are accepted for AP7335-15WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-15WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7335-15WG-7?
AP7335-15WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335-15WG-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 AP7335-15WG-7?
For technical support, including AP7335-15WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-15WG-7 requirements.
6.How does Aetrix verify that AP7335-15WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7335-15WG-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 AP7335-15WG-7 meets industry standards.
7.What is the process for return or replacement of AP7335-15WG-7?
All AP7335-15WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-15WG-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 AP7335-15WG-7 part is unused and in its original packaging.
Return procedure for AP7335-15WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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