آی سی L5973

توضیحات محصول
مشخصات فنی

2.5A SWITCH STEP DOWN SWITCHING REGULATOR

DESCRIPTION

The L5973D is a step down monolithic power switchingregulator with a minimum switch current limit of2.5A so it is able to deliver more than 2A DC currentto the load depending on the application conditions.The output voltage can be set from 1.235V to 35V.The high current level is also achieved thanks to anSO8 package with exposed frame, that allows to reducethe Rth(j-amb) down to approximately 40°C/WThe device uses an internal P-Channel D-MOS transistor(with a typical Rdson of 250mW) as switchingelement to minimize the size of the external components.An internal oscillator fixes the switching frequency at250KHz.Having a minimum input voltage of 4.4V only, it isparticularly suitable for 5V bus, available in all computerrelated applications.Pulse by pulse current limit with the internal frequencymodulation offers an effective constant currentshort circuit protection.

2.5A INTERNAL SWITCH
OPERATING INPUT VOLTAGE FROM 4.4V TO 36V
3.3V / (±2%) REFERENCE VOLTAGE
OUTPUT VOLTAGE ADJUSTABLE FROM1.235V TO 35V
LOW DROPOUT OPERATION: 100% DUTYCYCLE
250KHz INTERNALLY FIXED FREQUENCY
VOLTAGE FEEDFORWARD
ZERO LOAD CURRENT OPERATION
INTERNAL CURRENT LIMITING
INHIBIT FOR ZERO CURRENTCONSUMPTION
SYNCHRONIZATION
PROTECTION AGAINST FEEDBACKDISCONNECTION
THERMAL SHUTDOWN

کاتالوگ محصول : دیتاشیت آی سی L5973