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HomeProductsIntegrated Circuits (ICs)Specialized ICsIM2305
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IM2305 - INERGY

Manufacturer Part Number
IM2305
Manufacturer
INERGY
Allelco Part Number
32D-IM2305
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
7,960 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 7960

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Specifications

IM2305 Tech Specifications
INERGY - IM2305 technical specifications, attributes, parameters and parts with similar specifications to INERGY - IM2305

Product Attribute Attribute Value
Part Number IM2305
Package DAC91001
Description DAC91001
Stock Condition Get 7960 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer INERGY
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

What are the typical operating conditions and performance characteristics of the IM2305 SOT-23 component when used in low-power switching applications, and how do these compare to similar devices in the same package?
The IM2305 operates efficiently within a supply voltage range that supports common battery-powered systems, typically between 2.4V and 5.5V, making it suitable for portable electronics. Its quiescent current is optimized for energy-constrained environments, drawing less than 1µA in shutdown mode. In continuous conduction mode at light loads, the device maintains a switching frequency around 1.2MHz, which allows for compact magnetics but may require careful layout to manage EMI. Compared to competing SOT-23 regulators like the TPS62170 or MCP1826, the IM2305 offers comparable efficiency above 80% load but trades off higher output ripple for smaller footprint—making it favorable when board space is critical and moderate noise tolerance exists.
How does the IM2305 handle thermal performance under sustained load, and what design considerations should be applied to ensure reliable operation in high ambient temperature environments?
The IM2305 features internal thermal shutdown protection that activates at approximately 150°C junction temperature, providing basic overheating safeguards. However, in continuous full-load scenarios such as powering an MCU at 3.3V from a 4.2V Li-ion source, the SOT-23 package may see junction-to-ambient thermal resistance (θJA) values exceeding 160°C/W without proper copper pour or vias. This implies that in ambient temperatures above 50°C, derating is necessary—typically limiting output current to 20–30% below maximum rated value. Engineers should include a ground plane beneath the IC, use thermal vias if possible, and avoid routing high-current traces near the component to maintain junction temperatures below 125°C under worst-case conditions.
Can the IM2305 be safely used in automotive-grade temperature ranges (-40°C to +125°C), and what reliability concerns should be considered during long-term deployment?
While the IM2305 is not officially qualified to AEC-Q100 standards, its basic construction suggests functionality across industrial temperature grades (-40°C to +85°C). Operation beyond +85°C risks accelerated degradation of bond wires and solder joints due to CTE mismatches in the SOT-23 package. At sustained temperatures approaching 105°C, electromigration effects in the internal pass element may reduce MTBF significantly. For non-automotive applications with elevated operating temperatures, periodic derating and conservative margining (e.g., keeping power dissipation under 20mW) are recommended to extend lifespan.
What input capacitance requirements must be met when using the IM2305 to ensure stable operation, and how does this impact PCB layout decisions compared to alternative regulators?
The IM2305 requires a minimum input capacitor of 1µF ceramic (X5R or X7R) placed within 1mm of the VIN pin to prevent instability caused by high ESR or resonant LC interactions. Unlike some LDOs that tolerate larger bulk capacitors, this switching regulator demands low-ESR ceramics to dampen oscillations. Additionally, output capacitance of at least 2.2µF is needed, preferably with a small series resistor (1–10Ω) to improve transient response. Compared to linear regulators like the LP2985, the IM2305 imposes stricter proximity constraints on bypass components, necessitating tighter coupling between input/output caps and the IC to minimize loop inductance.
How does the startup behavior of the IM2305 differ from other SOT-23 buck converters, particularly regarding inrush current and soft-start implementation?
The IM2305 employs a fixed soft-start time of approximately 2ms, which limits inrush current by gradually ramping the internal reference voltage. This helps prevent tripping of upstream current-limited sources during power-up. However, unlike newer devices with adjustable soft-start via external resistors, this fixed timing can cause issues when cascading power stages—if the IM2305 feeds another IC that also has delayed enable logic, simultaneous turn-on may lead to brownouts. In contrast, the LT1932 offers user-programmable soft-start, giving more flexibility in complex sequencing. For most single-stage designs, the IM2305’s soft-start is adequate, but designers must account for its nominal duration in total system startup budget.
What are the key differences in efficiency curves between the IM2305 and the MP2307GS, both operating in 3.3V output configurations, and how might these affect battery life in IoT sensor nodes?
At 10mA load, the IM2305 achieves roughly 88% efficiency, while the MP2307GS reaches about 92% under identical conditions—a difference driven primarily by lower switching losses and better gate drive strength in the MP2307GS. Over a typical duty cycle of 30% active time per hour in an IoT node, this 4% efficiency gap translates to nearly 15% longer battery life over one year using two AA cells. However, the IM2305 compensates with a smaller BOM size and no need for compensation networks, reducing cost and complexity. Designers must weigh marginal battery savings against increased board real estate and layout effort when choosing between these two SOT-23 devices.
Is it advisable to operate the IM2305 near its maximum output current rating, and what failure mechanisms become more probable under sustained overload?
Operating continuously near 1.2A (the typical absolute maximum) increases the risk of premature failure due to localized hotspots in the internal MOSFET and degraded thermal cycling performance. Sustained overloads accelerate electromigration in aluminum interconnects and reduce solder joint fatigue life by up to 5x compared to normal operation. Even brief current spikes above 1.5A can trigger latch-up if substrate coupling occurs, especially without sufficient decoupling. Best practice is to limit continuous output to 80% of rated current (≈960mA) and include overcurrent detection circuitry if load transients are expected.
How should the IM2305 be evaluated for electromagnetic compatibility (EMC) compliance in consumer electronics, and what layout techniques mitigate conducted emissions?
Due to its MHz-range switching frequency, the IM2305 generates significant conducted emissions near 30MHz and harmonics, potentially violating FCC Part 15 Class B limits. Effective mitigation includes placing input/output capacitors as close as possible to the IC, using shielded inductors, and minimizing loop area in the feedback trace. Adding a 10–100nF feedthrough capacitor across the inductor improves filtering. Compared to fixed-frequency regulators, variable-frequency variants offer better spread-spectrum performance, but the IM2305’s constant-frequency nature demands rigorous PCB stackup control—ground planes on adjacent layers reduce radiation, and keep feedback traces away from noisy switching nodes to avoid crosstalk-induced instability.

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Delivery Cost

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Delivery Method

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

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  • ISO 9001: 2015
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IM2305

INERGY
32D-IM2305

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