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Diodes Incorporated AP7335A-50W-7
- Part No.:
- AP7335A-50W-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7335A-50W-7.pdf
- Description:
- IC REG LINEAR 5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:128
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Product details
Overview
AP7335A-50W-7 from Diodes Incorporated is a 300mA, 5.0V fixed-output low-dropout linear regulator with ±1% output accuracy, 150mV dropout at full load, 35μA quiescent current, and 65dB PSRR at 1kHz-designed for battery-powered portable electronics requiring stable voltage under fast load transients.
For engineers reviewing the AP7335A-50W-7 datasheet, AP7335A-50W-7 pinout, AP7335A-50W-7 application, or AP7335A-50W-7 equivalent, key selection criteria include input voltage range (5.5–6V), enable logic thresholds (VIH ≥ 1.4V, VIL ≤ 0.4V), thermal shutdown threshold (+145°C), and compatibility with 1μF ceramic output capacitors.
Technical Context
The AP7335A-50W-7 integrates a PMOS pass transistor, bandgap reference, error amplifier, and protection circuitry-including current limit (~650mA), short-circuit clamp (~160mA), and thermal shutdown with +145°C trip and +15°C hysteresis. Its architecture enables fast transient response (220μs start-up, minimal undershoot/overshoot during 0–300mA load steps) without external compensation.
It operates exclusively in fixed 5.0V output mode with no adjustable version. Input voltage must be ≥5.5V to sustain regulation at 300mA load, and stability is guaranteed with 1μF ceramic output capacitor (ESR >15mΩ), eliminating minimum load requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±1% over –40°C to +85°C - ensures precise rail generation for 5V logic and analog circuits. |
| Max Output Current | 300mA continuous - supports moderate-power peripherals like USB PHYs, display drivers, or audio codecs. |
| Dropout Voltage | 150mV at 300mA - enables operation from single-cell Li-ion (nominal 3.7V) only when boosted; requires ≥5.5V input for full-load 5V regulation. |
| Quiescent Current | 35μA typical - minimizes standby power loss in always-on subsystems such as RTC or sensor hubs. |
| PSRR | 65dB at 1kHz - suppresses switching noise from adjacent DC-DC converters feeding the LDO input. |
| Start-up Time | 220μs - allows rapid power sequencing in wake-from-sleep scenarios for GSM/TDMA baseband ICs. |
| Enable Threshold | VIH ≥ 1.4V, VIL ≤ 0.4V - compatible with standard 1.8V/3.3V GPIOs without level-shifting. |
Pinout & Package
AP7335A-50W-7 is packaged in SOT25 (5-pin, 2.8 × 2.9 mm), a surface-mount package with exposed thermal pad not connected internally. Pin 1 is IN, Pin 2 is GND, Pin 3 is EN, Pin 4 is NC, Pin 5 is OUT.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Must be bypassed with ≥1μF MLCC close to pin; minimum 5.5V required for 300mA 5V output. |
| 2 (GND) | Power ground reference | Common return path for input, output, and enable; requires low-inductance PCB connection to thermal plane. |
| 3 (EN) | Enable control input | Active-high logic: drives output ON when ≥1.4V; pulls output OFF when ≤0.4V; tie to IN if always-on operation needed. |
| 4 (NC) | No internal connection | Unbonded die pad; must remain unconnected and unpopulated on PCB to avoid parasitic coupling. |
| 5 (OUT) | Regulated 5.0V output | Requires ≥1μF ceramic capacitor to GND; stable with ESR >15mΩ; no minimum load required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 35μA quiescent current enables >1-year battery life in coin-cell–powered IoT sensors with periodic wake-up. |
| Fast transient response | Stable 5V output during 0→300mA load steps within 100μs - critical for GSM TDMA burst-mode power delivery. |
| Single-capacitor stability | Guaranteed stability with 1μF ceramic output capacitor - reduces BOM count and board area vs. traditional LDOs needing 10–22μF. |
| Integrated protection | Current limit (~650mA), short-circuit clamp (~160mA), and thermal shutdown (+145°C) prevent field failures without external circuitry. |
| Green packaging | SOT25 package is halogen-free, antimony-free, and fully RoHS-compliant - meets IPC-1752A material declaration requirements. |
Applications
| Smartphones | Bluetooth Headsets |
|---|---|
|
Use Scenario: Powering RF transceivers and audio DACs during GSM transmit bursts. IC Role / Device Role / Timing Role: Primary 5V LDO delivering clean, fast-response power to baseband ICs synchronized with TDMA slot timing. Use Value: 220μs start-up and <10mV undershoot during 0–300mA load steps prevent digital corruption and audio clipping. |
Use Scenario: Supplying Bluetooth SoC core and Class-D amplifier in compact earbud designs. IC Role / Device Role / Timing Role: Always-on 5V rail generator enabling instant wake-from-sleep and low-latency audio streaming. Use Value: 35μA IQ extends recharge interval; 1μF capacitor support reduces footprint in space-constrained 2-layer PCBs. |
| Battery Chargers | LCD TVs |
|
Use Scenario: Providing isolated 5V bias for USB-C PD controller and status LED drivers. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main charging path to ensure reliable communication during high-current charge cycles. Use Value: 65dB PSRR rejects ripple from buck converter switching noise, preventing false PD negotiation errors. |
Use Scenario: Powering HDMI receiver ICs and remote-control IR receivers in standby mode. IC Role / Device Role / Timing Role: Standby LDO maintaining 5V rail while main system is powered down. Use Value: ±1% output accuracy guarantees HDMI hot-plug detection reliability; thermal shutdown prevents overheating in enclosed bezels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-5002E/TO | 250mA max output, 6μA IQ, 1.6V min VIN - lower current, much lower IQ, wider input range. | Preferred for ultra-low-power microcontrollers (e.g., PIC12LF) where 300mA is unnecessary. | Select when sub-10μA standby current outweighs need for 300mA drive capability. |
| Torex XC6206P502MR | 300mA output, 1.0% accuracy, 120mV dropout at 100mA - tighter accuracy, lower dropout at light loads, but 100μA IQ. | Better suited for precision analog rails (e.g., ADC references) where 1% tolerance is critical and IQ <50μA is acceptable. | Select when ±0.5% initial accuracy and lower dropout below 100mA are prioritized over lowest possible IQ. |
Compared with MCP1700-5002E/TO and XC6206P502MR, AP7335A-50W-7 uniquely balances 300mA drive, 35μA IQ, and 65dB PSRR - making it optimal for portable RF/audio systems demanding both current headroom and noise immunity.
Availability
AP7335A-50W-7 is available at Aetrix Electronics and suitable for smartphone power management, Bluetooth headset subsystems, battery charger auxiliary rails, and LCD TV standby circuits requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.
Supply support for AP7335A-50W-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 power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP7335A series belongs to Diodes' low-quiescent-current LDO portfolio, engineered specifically for battery-powered portable devices needing fast transient response, minimal board space, and robust fault protection.
FAQ
What is the minimum input voltage required for AP7335A-50W-7 to regulate 5.0V at 300mA?
The minimum input voltage is 5.5V, as specified in the Recommended Operating Conditions table. At 300mA load, the 150mV dropout voltage requires VIN ≥ VOUT + VDROPOUT = 5.0V + 0.15V = 5.15V; however, datasheet Note 6 explicitly states VIN(MIN) = 5.5V for full 300mA operation across temperature and process variation - ensuring ±1% output accuracy and stability.
Can AP7335A-50W-7 operate without an output capacitor?
No. The device requires a minimum 1μF ceramic output capacitor connected between OUT and GND for stability, as confirmed in the Application Note section. Omitting it risks oscillation, excessive overshoot/undershoot during transients, and potential thermal shutdown due to instability-induced power dissipation.
Is the NC pin (Pin 4) electrically isolated or thermally coupled?
Pin 4 is a true no-connect: unbonded at the die level with no internal electrical or thermal connection. It must remain unconnected on the PCB; soldering or routing to it introduces risk of contamination, parasitic capacitance, or mechanical stress - all of which degrade long-term reliability per Diodes' package documentation.
Does AP7335A-50W-7 support reverse-voltage protection?
No. The device lacks integrated reverse-voltage protection. If input polarity is ever reversed (e.g., during hot-swap or assembly error), forward conduction through the internal PMOS body diode may cause irreversible damage. External protection - such as a series Schottky diode or dedicated reverse-polarity IC - must be added in systems with potential reverse-bias risk.
AP7335A-50W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 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, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7335A-50W-7 FAQ
1.How can I place an order for AP7335A-50W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7335A-50W-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 AP7335A-50W-7 reliable?
The price and inventory of AP7335A-50W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7335A-50W-7 is usually 5 days.
3.What payment methods are accepted for AP7335A-50W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7335A-50W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7335A-50W-7?
AP7335A-50W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7335A-50W-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 AP7335A-50W-7?
For technical support, including AP7335A-50W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7335A-50W-7 requirements.
6.How does Aetrix verify that AP7335A-50W-7 is sourced from the original manufacturer or authorized distributors?
All AP7335A-50W-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 AP7335A-50W-7 meets industry standards.
7.What is the process for return or replacement of AP7335A-50W-7?
All AP7335A-50W-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7335A-50W-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 AP7335A-50W-7 part is unused and in its original packaging.
Return procedure for AP7335A-50W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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