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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7335-08WG-7

Name: AP7335-08WG-7
Brand: Diodes Incorporated
SKU: AP7335-08WG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7335-08WG-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: SC-74A, SOT-753

Datasheet:: AP7335-08WG-7.pdf

Description:: IC REG LINEAR 0.8V 300MA SOT25

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Product details

Overview

AP7335-08WG-7 from Diodes Incorporated is a 300mA fixed-output (0.8V) low-dropout linear regulator in SOT25 package, featuring 35μA quiescent current, 150mV dropout at 300mA, 65dB PSRR at 1kHz, and fast 220μs startup-designed for power-sensitive battery-operated devices such as Bluetooth headsets and MP3 players.

For engineers reviewing the AP7335-08WG-7 datasheet, AP7335-08WG-7 pinout, AP7335-08WG-7 application, or AP7335-08WG-7 equivalent, key selection criteria include ultra-low IQ, stable operation with 1μF ceramic output capacitor, EN pin control logic thresholds (VIH = 1.4V, VIL = 0.4V), and thermal shutdown at 145°C with 15°C hysteresis.

Technical Context

The AP7335-08WG-7 integrates a PMOS pass element, band-gap reference, error amplifier, and protection circuitry-including current limit (~600mA), short-circuit clamp (~140mA), and thermal shutdown (145°C/130°C hysteresis). Its fixed 0.8V output eliminates external feedback resistors, simplifying layout for low-voltage core supplies.

It operates across 2V–6V input range and maintains regulation down to 0mA load. The device achieves fast transient response via optimized internal compensation and supports stable operation with output capacitors ≥1μF and ESR >15mΩ-critical for GSM/DSP load steps from 10mA to 300mA within 1μs.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 0.8V ±2% - matches ultra-low-voltage processor I/O or core rails requiring precise sub-1V bias.
Max Output Current	300mA continuous - sufficient for single-core microcontrollers or RF front-end biasing.
Quiescent Current	35μA typical - enables multi-year battery life in always-on sensor nodes or standby circuits.
Dropout Voltage	150mV at 300mA (VOUT ≥ 2.5V); 170mV at 300mA (VOUT < 2.5V) - allows operation from partially discharged Li-ion cells (down to ~0.95V headroom).
PSRR	65dB at 1kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails.
Startup Time	220μs - enables rapid wake-up from deep sleep without voltage droop during CPU core activation.
Thermal Shutdown	145°C trigger with 15°C hysteresis - prevents permanent damage during sustained high-power dissipation in compact enclosures.

Pinout & Package

SOT25 package (2.9mm × 2.8mm × 1.3mm), RoHS-compliant, green molding compound, with exposed pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1: IN	Input voltage supply	Accepts 2V–6V; requires ≥1μF MLCC decoupling placed adjacent to pin to suppress input ripple and ensure stability.
2: GND	Power ground reference	Common return path for IN, OUT, and EN; must connect to low-impedance ground plane to minimize noise coupling.
3: EN	Enable control input	Active-high logic interface (VIH ≥ 1.4V, VIL ≤ 0.4V); tie to IN for always-on operation or drive from GPIO for dynamic power gating.
4: NC	No connection	Internally unconnected; must remain floating-no PCB trace or solder mask opening required.
5: OUT	Regulated output	Delivers stable 0.8V; bypassed with ≥1μF ceramic capacitor near pin to maintain fast transient response and prevent oscillation.

Key Features

Feature	Design Value
Ultra-low quiescent current	35μA enables >10-year battery life in coin-cell-powered IoT sensors operating at 1% duty cycle.
Fast transient response	Stable under 10mA ↔ 300mA load steps in <100μs-supports burst-mode DSP execution without rail collapse.
Low-ESR capacitor compatibility	Stable with 1μF ceramic output caps (ESR >15mΩ), reducing BOM count and PCB area vs. legacy LDOs requiring tantalum.
Integrated protection	Current limit (600mA), short-circuit clamp (140mA), and thermal shutdown (145°C) eliminate need for external fault management circuitry.
Wide input voltage range	2V–6V operation accommodates single-cell Li-ion (2.7–4.2V), dual-cell alkaline (2–3.2V), or USB-fed systems (4.5–5.5V).

Applications

Bluetooth Headset Power

MP3 Player Core Supply

Use Scenario: Powering Bluetooth baseband IC and audio codec in compact wearable headset with CR2032 coin cell.

IC Role / Device Role / Timing Role: Primary 0.8V core regulator delivering clean, low-noise bias to digital signal processor and RF transceiver.

Use Value: 35μA IQ extends battery runtime beyond 120 hours of active use; 220μs startup synchronizes with Bluetooth connection handshake timing.

Use Scenario: Supplying 0.8V core voltage to ARM Cortex-M0 microcontroller and NAND flash interface in portable media player.

IC Role / Device Role / Timing Role: Fixed-output LDO providing stable core rail during rapid transitions between playback, decode, and display update cycles.

Use Value: 65dB PSRR at 1kHz rejects noise from switching backlight driver; 150mV dropout enables full functionality down to 0.95V input headroom.

Smartphone Subsystem Bias

Wearable Sensor Hub

Use Scenario: Powering always-on motion sensor fusion engine (accelerometer + gyroscope + MCU) in smartphone auxiliary domain.

IC Role / Device Role / Timing Role: Always-active low-IQ regulator maintaining real-time sensor data aggregation during main SoC sleep states.

Use Value: No-load stability ensures reliable wake-up triggering; thermal shutdown protects against enclosure heat buildup during extended GPS tracking.

Use Scenario: Delivering 0.8V bias to ultra-low-power environmental sensor array (temperature/humidity/pressure) in fitness tracker.

IC Role / Device Role / Timing Role: Primary power source for mixed-signal ASIC with integrated ADC and digital logic, operating in 10ms measurement bursts.

Use Value: Fast 220μs startup aligns with sensor sampling window; 300mA capability supports simultaneous sensor activation and BLE radio transmit.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-0802E/TO	300mA max, 2.3μA IQ, 600mV dropout at 250mA, TO-92 package	Larger footprint, higher dropout limits usable input range; unsuitable for Li-ion discharge tail end	Select only if ultra-low IQ dominates over size and dropout; verify thermal derating in enclosed wearables
Torex XC6206P082MR-G	300mA max, 1.0μA IQ, 200mV dropout at 100mA, SOT-25 package	Lower IQ but reduced current capability and slower transient response (500μs startup)	Prefer for energy-harvesting systems with intermittent microwatt loads; avoid for burst-mode DSP loads

Compared with MCP1700-0802E/TO and XC6206P082MR-G, the AP7335-08WG-7 uniquely balances ultra-low IQ (35μA), low dropout (150mV), and fast startup (220μs) in a space-constrained SOT25 package-making it optimal for battery-powered devices demanding both longevity and responsiveness.

Availability

AP7335-08WG-7 is available at Aetrix Electronics and suitable for Bluetooth headset power, MP3 player core supply, and wearable sensor hub applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for AP7335-08WG-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 portable electronics where battery life, small form factor, and fast dynamic response are critical design constraints.

FAQ

What is the minimum input voltage required for AP7335-08WG-7 to regulate 0.8V output at 300mA?

The minimum input voltage is calculated as VOUT + VDropout = 0.8V + 0.15V = 0.95V. However, per Absolute Maximum Ratings and Recommended Operating Conditions, VIN must be ≥2.0V for guaranteed specification compliance-including PSRR, line regulation, and thermal stability. Below 2.0V, operation is not characterized or supported.

Can AP7335-08WG-7 operate without an output capacitor?

No. The datasheet explicitly requires a minimum 1μF ceramic output capacitor with ESR >15mΩ for stability. Omitting it causes oscillation and unregulated output, especially under load transients. The capacitor must be placed adjacent to OUT and GND pins using short, wide traces per recommended layout.

Is the EN pin internally pulled up or down?

The EN pin has no internal pull-up or pull-down resistor. It is a high-impedance CMOS input requiring an external logic signal or direct tie to IN for always-on operation. Leaving EN floating may cause unpredictable startup behavior due to noise susceptibility and undefined logic state.

Does AP7335-08WG-7 require a minimum load current to maintain regulation?

No. The device remains stable and regulated at zero load current, as confirmed in Application Notes ("No Load Stability" section). This eliminates the need for bleed resistors, preserving battery life in standby modes where downstream circuitry draws negligible current.

AP7335-08WG-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):: 0.8V

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

AP7335-08WG-7 FAQ

1.How can I place an order for AP7335-08WG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7335-08WG-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 AP7335-08WG-7 reliable?

The price and inventory of AP7335-08WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335-08WG-7 is usually 5 days.

3.What payment methods are accepted for AP7335-08WG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335-08WG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7335-08WG-7?

AP7335-08WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7335-08WG-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 AP7335-08WG-7?

For technical support, including AP7335-08WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335-08WG-7 requirements.

6.How does Aetrix verify that AP7335-08WG-7 is sourced from the original manufacturer or authorized distributors?

All AP7335-08WG-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 AP7335-08WG-7 meets industry standards.

7.What is the process for return or replacement of AP7335-08WG-7?

All AP7335-08WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335-08WG-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 AP7335-08WG-7 part is unused and in its original packaging.

Return procedure for AP7335-08WG-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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