ADM1203

Preliminary Technical Data FEATURES Enables Power Supply Tracking of multiple Supplies Monitors Current on Supply being Tracked Up/Down Tracking limits Supply Differences to ~100mV Capacitor Adjustable Slew Rate On Board Charge Pump Fully enhances FET Ability to Track Down Supplies (ADM1203-1/3) Emergency Shutdown Feature (ADM1203-2/4) Auto retry after Current Fault (ADM1203-1/2) Latch off after Current Fault (ADM1203-3/4) Packaged in tiny 8-Lead TSOT Package Simple Tracker TM with Circuit Breaker ADM1203 The ADM1203 is packaged in a tiny 8-pin TSOT package. www.DataSheet4U.com every cycle determined by the capacitor on the TIMER pin and the ADM1203-3/4 will latch off the gate until the up/down(stop) pin is toggled. Functional Block Diagram Rs VIN Q1 V OUT VCC RS- APPLICATIONS Multi-Voltage Supply Rail Tracker Telecoms and Datacom s Systems Multi voltage Network Processors , FPGAs, ASICs, DSPs PC/Server Applications UP/DOWN (ADM1203-1/3) UP/STOP (ADM1203-2/4) CSLEW VCC GATE FET DRIVER 20nF LOGIC SLEW RATE CONTROL VOUT GENERAL DESCRIPTION CSLEW CTIMER TIMER CONTROL ADM1203 CTIMER GND The ADM1203 is a cascadable Simple Tracker TM device which ensures that voltage rails track within ~100mV of each other in multi supply systems. Any number of these devices can be cascaded to form a multi supply tracking solution. The ADM1203 requires 2.7V to 16.5V on its Vcc pin to operate. An on-board charge pump generates a high voltage GATE drive to fully enhance FETs in the...