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Home > Products > Integrated Circuits (ICs) > Specialized ICs > EUP7907B-12CIR1
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EUP7907B-12CIR1

Manufacturer Part Number:
EUP7907B-12CIR1
Manufacturer / Brand
EUTECH
Part of Description:
EUTECH SOT89
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 81666 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number EUP7907B-12CIR1
Manufacturer / Brand EUTECH
Stock Quantity 81666 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description EUTECH SOT89
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.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

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Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
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

What are the key design constraints when integrating the EUP7907B-12CIR1 into a high-efficiency power supply circuit, particularly regarding input voltage range and thermal management?
The EUP7907B-12CIR1 supports an input voltage range from 4.5V to 36V, making it suitable for a wide range of industrial applications, but designers must ensure that transient spikes do not exceed this limit. Due to its SOT89 packaging, thermal performance is limited, so adequate PCB copper area and airflow should be considered in continuous operation above 100mA load to prevent junction temperatures from exceeding the specified maximum.
Can the EUP7907B-12CIR1 be used as a drop-in replacement for the EUP7907B-05CIR1 in existing designs, and what voltage-related trade-offs should be evaluated?
While both parts share the same package and pinout, the EUP7907B-12CIR1 outputs 12V compared to the 5V output of the -05 variant. Substituting without adjusting downstream regulation may cause overvoltage conditions in loads designed for 5V. Designers should verify that all components, including feedback networks and protection circuits, are compatible with the higher output voltage and associated power dissipation.
What considerations apply when selecting bypass capacitors for the EUP7907B-12CIR1 in noisy industrial environments, and how does input capacitance affect stability?
A minimum input capacitance of 10µF ceramic or tantalum is recommended to stabilize the input rail and suppress high-frequency noise. However, excessive capacitance can increase inrush current and slow startup behavior. For optimal stability, place the capacitor within 5mm of the VIN pin and use X7R or better dielectric materials to maintain capacitance across temperature variations.
Is the EUP7907B-12CIR1 suitable for battery-powered applications requiring low quiescent current, and what efficiency trade-offs exist at light loads?
The device features a typical quiescent current of 40µA, which supports battery longevity in standby modes. However, efficiency drops significantly below 100mA due to fixed switching frequency operation. In ultra-low-power designs, consider enabling pulse-skipping or using a DC-DC converter with variable-frequency control to maintain efficiency across load ranges.
How does the EUP7907B-12CIR1 handle short-circuit and overload conditions, and what recovery mechanism ensures system reliability during sustained faults?
The device includes internal foldback current limiting and thermal shutdown protection. Upon detecting an overcurrent condition, it reduces output current proportionally to the load, then resumes normal operation once the fault is removed and temperature returns to safe levels. This behavior prevents catastrophic failure but may require external monitoring in systems demanding immediate fault isolation.
Can the EUP7907B-12CIR1 operate reliably in automotive-grade temperature ranges, and what derating practices are recommended for extended ambient exposure?
The EUP7907B-12CIR1 is rated for -40°C to +125°C junction temperature, aligning with automotive requirements, but continuous operation near the upper limit necessitates careful PCB layout and thermal vias. To ensure long-term reliability, limit average power dissipation by 20–30% in industrial environments and avoid prolonged operation at full load in sealed enclosures.
What are the configuration options for the EUP7907B-12CIR1, and does it support adjustable output voltage without additional components?
The EUP7907B-12CIR1 has a fixed 12V output and cannot be adjusted via external resistors. Any requirement for programmable output voltage must be addressed through post-regulation stages or by selecting an alternative adjustable regulator. Attempting to modify the feedback path may compromise stability and regulation accuracy.
How does the EUP7907B-12CIR1 compare to synchronous rectification alternatives in terms of component count and efficiency, especially at higher output currents?
Unlike synchronous step-down converters, the EUP7907B-12CIR1 uses a standard diode rectifier, resulting in higher conduction losses at loads above 200mA. This increases component count slightly due to larger inductor and output capacitor needs, but simplifies layout and reduces cost. Efficiency is typically 85–90% at 500mA, making it less suitable than synchronous solutions above 1A.
What precautions should be taken when migrating from a discrete linear regulator to the EUP7907B-12CIR1 in legacy designs, particularly regarding EMI and switching artifacts?
Switching regulators like the EUP7907B-12CIR1 generate high-frequency noise that can interfere with sensitive analog circuitry. A 10µH ferrite bead combined with a 1µF decoupling capacitor on the output can reduce conducted emissions. Additionally, route switching nodes away from control lines and use ground planes to minimize radiated interference in mixed-signal systems.
Is the EUP7907B-12CIR1 compatible with automated optical inspection (AOI) and reflow soldering processes common in high-volume manufacturing?
Yes, the SOT89 package is compatible with standard reflow profiles up to 260°C peak temperature and supports AOI due to its small footprint and clear solder joint visibility. However, ensure that the PCB pad design matches the manufacturer’s recommendations to prevent tombstoning during assembly, especially with asymmetric component placement.

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