BA41W12ST ROHM
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 9
Technical content
Features
1) Minimum I / O voltage differential is 0.5V or less. 2) Built-in protection circuits against overcurrent, over- voltage, and overheat. 3) Available in a compact TO220FP-5 package (pins are bendable). 4) Zero power saving current. (Typ.) Block diagram
Absolute maximum ratings (Ta = 25/C0095C) Recommended operating conditions (Ta = 25/C0095C) Pin descriptions Input / output circuits
Electrical characteristics (unless otherwise noted, Ta = 25/C0095C and VCC = 13.0V)
(1) Although the circuit examples included in this hand- book are highly recommendable for general use, you should be thoroughly familiar with circuit characteristics as they relate to your own use conditions. If you intend to change the number of external circuits, leave an ample margin, taking into account discrepancies in both static and dynamic characteristics of external parts and Rohm ICs. In addition, please be advised that Rohm cannot provide complete assurance regarding patent rights. (2) Operating power supply voltage When operating within the proper ranges of power supply voltage and ambient temperature, most circuit functions are guaranteed. Although the rated values of electrical characteristics cannot be absolutely guaranteed, char- acteristic values do not change drastically within the proper ranges. (3) Power dissipation (Pd) Refer to the power dissipation characteristics in Fig. 10. If power dissipation exceeds the allowable limit, the func- tionality of the IC will be degraded (such as reduction of current capacity by increased chip temperature). Make sure to use the IC within the allowable range of power dis- sipation with a sufficient margin. (4) Preventing oscillation at each output and bypass capacitor To stop output oscillation, make sure to connect a capaci- tor between GND and each output pin (capacitance of at least 10µF over the whole operating temperature is rec- ommended). Oscillation can occur if capacitance is sus- ceptible to temperature. We recommend using a tanta- lum electrolytic capacitor with minimal changes in capacitance. Also, output can be further stabilized by connecting a bypass capacitor of about 0.33µF between V CC and GND. (5) Overcurrent protection circuit An overcurrent protection circuit is installed in each out- put system, based on the respective output current. This prevents IC destruction due to overcurrent, by limiting the current with a curve shape of “7” in the voltage-current graph. The IC is designed with margins so that current flow will be restricted and latching will be prevented even if a large current suddenly flows through a large capaci- tor. Note that these protection circuits are only good for preventing damage from sudden accidents. Make sure your design does not cause the protection circuit to oper- ate continuously under transitional conditions (for instance, if output is clamped at 1V F or higher, short mode circuit operates at 1VF or lower). Note that the ca- pacitance is negatively correlated with temperature. (6) Thermal protection circuit A built-in thermal protection circuit prevents thermal damage to the IC. All outputs are turned off when the cir- cuit operates, and revert to the original state when the temperature drops to a certain level. (7) We recommend installing a bypass line in your ap- plication if there is a mode where potential difference be- tween each output and input (V CC ) or GND is reversed from the normal state. A revered mode may cause dam- age to the IC. (8) Although the quality of this IC is rigorously con- trolled, the IC may be destroyed when the applied volt- age or the operating temperature exceeds their absolute maximum ratings. Because short mode or open mode cannot be specified when the IC is destroyed, be sure to take physical safety measures, such as fusing, if any of the absolute maximum ratings might be exceeded. (9) When used within a strong magnetic field, be aware that there is a slight possibility of malfunction.
Electrical characteristic curves External dimensions (Units: mm)