TKA-W25 series 0.25W DC-DC converter

Product catalog summary

Description: The TKA-W25 series are miniature, isolated 0.25W DC/DC converters available in SIP and DIP packages. They are designed for space-critical applications requiring board-level power distribution. These converters feature high performance at a low cost due to their internal SMD construction, offering smaller size, improved efficiency, lower output ripple noise, and 3KVDC isolation.

Features: The series is RoHS compliant and CE certified, with efficiency up to 83%. It operates within a temperature range of -40℃ to 105℃ and uses UL 94V-0 package material. The converters have an industry-standard pinout and support power sharing on output. Input voltages include 3.3V, 5V, 12V, and 24V, with output voltages ranging from 3.3V to 24V.

Selection Guide: The document provides a detailed selection guide listing various models with their nominal input voltage, output voltage, output current, efficiency, and package style (DIP or SIP). For example, the TKA0303DA-W25 model has a 3.3V input, 3.3V output, and 75% efficiency in a DIP package.

Input Characteristics: The input voltage range varies by model, with 3.3V variants ranging from 2.9V to 3.6V, and 24V variants from 22V to 26.5V. Reflected ripple current is specified for different input variants.

Absolute Maximum Ratings: Short-circuit protection is available for 1 second. The lead temperature can reach 300ºC for 12 seconds, and internal power dissipation is 540mW. Maximum input voltages are specified for different models.

Isolation Characteristics: The isolation test voltage is 3000 VDC, with a resistance of 1 GΩ at 1000VDC.

General Characteristics: Switching frequency is 95 kHz for 3V input and 0503 models, and 120 kHz for others.

Temperature Characteristics: The operating temperature range is -40°C to 105°C, with storage temperatures from -50°C to 130°C. Case temperature rise above ambient is specified for different output types.

Mechanical Dimensions and Pin Connections: The document provides detailed mechanical dimensions and pin connections for both 14 PIN DIP and 6 PIN SIP packages. Recommended footprint details and tube outline dimensions are also included.

Soldering Information: The series is compatible with RoHS soldering systems, with a peak wave solder temperature of 300℃ for 10 seconds. It is also backward compatible with Sn/Pb soldering systems.

Catalog excerpts

0.25W 3KVDC Isolated Miniature Single Output DC/DC Converters The TKA-W25series are miniature, isolated 0.25W DC/DC converters in a SIP and DIP package. They offer the ideal solution in many space critical applications for board level power distribution. The Internal SMD construction makes it possible to offer a product with high performance at low cost. The series offers smaller size, improved efficiency, lower output ripple noise and 3KVDC isolation. SELECTION GUIDE Part Number Add suffix “P” for continuous short circuit protection, for example TKA0505SAP-W25.

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TKA-W25 Series INPUT CHARACTERISTICS Parameter Voltage range Voltage range Voltage range Voltage range Reflected ripple current Reflected ripple current Conditions 3.3V input variants 5V input variants 12V input variants 24V input variants 3.3V input All other ABSOLUTE MAXIMUM RATINGS Short-circuit protection Lead temperature 1.5mm from case for 12 seconds Internal power dissipation Input voltage Vin, TKA03 Input voltage Vin, TKA05 Input voltage Vin, TKA12 Input voltage Vin, TKA24 ISOLATION CHARACTERISTICS Parameter Isolation test voltage Resistance Conditions tested for 1 second Viso= 1000VDC...

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TKA-W25 SeriesMECHANICAL DIMENSIONS PIN CONNECTIONS bottom view All dimensions in ±0.25mm All pins on a 2.54mm pitch and within ±0.25 of true position weight:1.4g(SIP) 1.9g(DIP) TUBE OUTLINE DIMENSIONS 14 Pin DIP Tube Unless otherwise stated all dimensions i n mm±0.5mm Tube length(14 Pin DIP): 520mm ±2mm Tube length(6 Pin SIP): 525mm ±2mm This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300"C for 10 seconds. Both types in this series are backward compatible with Sn/Pb soldering systems.

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