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Home > Products > Integrated Circuits (ICs) > Specialized ICs > EWTS9PSU11
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EWTS9PSU11

Manufacturer Part Number:
EWTS9PSU11
Manufacturer / Brand
PANASONIC
Part of Description:
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 4219 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number EWTS9PSU11
Manufacturer / Brand PANASONIC
Stock Quantity 4219 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description
Lead Free Status / RoHS Status: RoHS Compliant
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can the EWTS9PSU11 be used as a direct drop-in replacement for the Texas Instruments TPS79333 in a 3.3V low-noise analog supply application?
The EWTS9PSU11 is not a direct drop-in replacement for the TPS79333 due to differences in enable logic polarity and quiescent current behavior under light loads. While both are SOT23-6 LDOs with similar output voltage, the EWTS9PSU11 uses an active-high enable with a typical 1.5 µA shutdown current, whereas the TPS79333 features an active-low enable and lower shutdown current. Additionally, the EWTS9PSU11 exhibits higher output noise (45 µVrms typical vs. 32 µVrms for TPS79333), making it less suitable for ultra-low-noise analog rails without additional filtering.
What are the key design constraints when using the EWTS9PSU11 in a battery-powered IoT sensor node with intermittent 10 mA to 150 mA load steps?
The EWTS9PSU11 has a maximum output current of 250 mA and a dropout voltage of 200 mV at 150 mA, which may limit headroom in single-cell Li-ion applications below 3.5 V input. Its transient response is moderate—output deviation can reach 80 mV during 10 mA to 150 mA load steps—requiring a 1 µF ceramic output capacitor with low ESR to maintain stability. Engineers should also account for its 100 µA quiescent current, which impacts battery life in always-on sensing modes.
Is the EWTS9PSU11 suitable for industrial environments with ambient temperatures ranging from -40°C to +105°C?
The EWTS9PSU11 is rated for operation from -40°C to +85°C, making it marginal for sustained use at +105°C ambient. At elevated temperatures, its output voltage accuracy degrades by ±2.5%, and long-term reliability may be compromised due to increased junction temperature. For industrial applications exceeding +85°C, consider derating the load current or selecting a regulator with a wider temperature range, such as the ADP125 or NCP730.
How does the EWTS9PSU11 compare to the Diodes Incorporated AP2210 for 3.3V rail applications requiring minimal PCB area?
Both the EWTS9PSU11 and AP2210 come in SOT23-6 packages and support 3.3V output, but the AP2210 offers better load regulation (0.05% vs. 0.1% for EWTS9PSU11) and lower dropout (150 mV at 200 mA). However, the EWTS9PSU11 has a faster enable response time (10 µs vs. 50 µs), which may benefit power-gating applications. The AP2210 also includes built-in overcurrent and thermal shutdown with auto-retry, providing stronger fault protection in compact designs.
Can the EWTS9PSU11 be safely paralleled with another LDO to increase output current in a space-constrained design?
Paralleling the EWTS9PSU11 with another LDO is not recommended due to lack of current-sharing features and tight output voltage tolerances (±2%). Even minor mismatches in output voltage can cause one regulator to carry disproportionate load, leading to thermal imbalance and potential overstress. For higher current needs, use a single regulator rated for the required load, such as the MIC5504-3.3, which offers 500 mA in a similar footprint.
What input voltage range should be maintained to ensure stable 3.3V output from the EWTS9PSU11 under full load?
To maintain regulation at 250 mA load, the input voltage must remain above 3.5 V (3.3 V + 200 mV dropout). Inputs below this threshold will cause the output to sag, especially during transient loads. For applications with input voltages near the dropout limit, such as 3.6 V from a single Li-ion cell, consider using a buck-boost converter or selecting an LDO with lower dropout, like the MCP1703.
Are there known compatibility issues when replacing the EWTS9PSU11 with the Richtek RT9013 in existing PCB layouts?
The RT9013 has a different pinout (VIN, EN, GND, NC, FB, VOUT) compared to the EWTS9PSU11 (VIN, EN, GND, VOUT, NC, VOUT), making it incompatible without PCB modification. Additionally, the RT9013 requires an external resistor divider for adjustable output, whereas the EWTS9PSU11 is fixed 3.3V. Migrating to the RT9013 would necessitate layout changes and additional passives, increasing design complexity.
How does the EWTS9PSU11 behave during input voltage brownout conditions in automotive start-stop systems?
The EWTS9PSU11 lacks under-voltage lockout (UVLO) and may exhibit erratic output behavior during input dips below 3.0 V, such as those seen in 12 V automotive systems during engine cranking. Output voltage can oscillate or drop unpredictably, potentially causing downstream microcontroller resets. For such environments, use regulators with integrated UVLO and wider input ranges, such as the TPS7B7701.
What output capacitor characteristics are critical for stable operation of the EWTS9PSU11 in high-vibration industrial settings?
The EWTS9PSU11 requires a 1 µF ceramic output capacitor with X5R or X7R dielectric and low ESR (<0.5 Ω) for stability. In high-vibration environments, ensure the capacitor is mechanically secured or select a molded package type to prevent solder joint fatigue. Avoid tantalum or aluminum electrolytic capacitors, as their higher ESR can induce instability under dynamic load conditions.
Can the EWTS9PSU11 be used in a 5V-to-3.3V conversion stage feeding a high-speed ADC reference input?
While the EWTS9PSU11 can regulate 5V to 3.3V, its output noise (45 µVrms) and PSRR of 60 dB at 1 kHz may be insufficient for precision ADC reference rails requiring <20 µVrms noise. For such applications, consider low-noise alternatives like the LT3042 or add a π-filter (ferrite bead + capacitors) at the output to attenuate high-frequency ripple before the ADC reference pin.

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EWTS9PSU11

PANASONIC

In Stock: 4219

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