思旺SE2490代理

SE2490

SE2490 is a wide input voltage, high efficiency Active CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. SE2490 consists of step-down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier and etc. SE2490 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to the duty ratio linearly forms 0 up to . An over current protection function is built outside that it can set by a resistance. An external compensation is easily to system stable; the low ESR output capacitor can be used. With the addition of an internal N-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the PSOP-8 packages, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage up to 36V. Features n Input Voltage：8V to 36V n Vout Accuracy (VFB=1V) ±2% n CC/CV mode(Constant Current and Constant Voltage) n Up to 2.8A output current n ±3%/±5%/15%Current limit Accuracy n Duty ratio：0% to PWM control n Oscillation frequency：250KHz n Thermal Shutdown function. n Short Circuit Protect (SCP). n Built-in internal LX N-channel MOS. n Current mode non-synchronous PWM converter n External current limit setting. n Over Voltage Protection5.8V. n Built in adjustable line-compensation. n PSOP-8 Pb-Free package Application n Car charger n Portable charger Device