FreeDatasheets.com

Part Manufacturer: ST Microelectronics

Part Description: 5 Bit programmable step down controller with synchronous rectification

Part Details:

L6911E 5-Bit programmable step down controller with synchronous rectification Features Operating supply IC voltage from 5V to 12V buses Up to 1.3A gate current capability TTL-compatible 5 bit programmable output SO-20 compliant with VRM 8.5 :1.050V to 1.825V with 0.025V binary steps Description Voltage mode PWM control Excellent output accuracy: ±1% over line and The device is a power supply controller temperature variations specifically designed to provide a high performance DC/DC conversion for high current Very fast load transient response: from 0% to microprocessors. A precise 5 bit digital to analog 100% Duty Cycle converter (DAC) allows to adjust the output Power good output voltage voltage from 1.050 to 1.825 with 25mV binary Overvoltage protection and monitor steps. Overcurrent protection realized using the upper The high precision internal reference assures the MOSFET s Rds(ON) selected output voltage to be within ±1%. The 200kHz internal oscillator high peak current gate drive affords to have fast switching to the external power mos providing low Oscillator externally adjustable from 50kHz to switching losses. 1MHz The device assures a fast protection against load Soft start and inhibit functions overcurrent and load over-voltage. An external SCR is triggered to crowbar the input supply in Applications case of hard overvoltage. An internal crowbar is also provided turning on the low side mosfet as Power supply for advanced long as the over-voltage is detected. In case of microprocessor core over-current detection, the soft start capacitor is Distributed power supply discharged an the system works in HICCUP mode. Table 1. Device summary Part Number Package Packaging L6911E TSSOP8 Tube

Please click the following link to download the datasheet:

L6911E.pdf Download PDF Datasheet