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CS2001
1.2 A Switching Regulator, and 5.0 V, 100 mA Linear Regulator with RESET
The CS2001 is a smart power supply ASIC utilized in automotive airbag systems. It contains a current−mode switching regulator with a 1.2 A on−chip switch and a 5.0 V, 100 mA linear regulator. The linear output capacitor must be 3.3 μF or greater with an ESR in the range of 100 mΩ to 1.0 Ω. If the ESR of the cap is less than 100 mΩ, a series resistor must be used. The switcher can be configured in either a boost or flyback topology. The boost topology produces energy reserve the resistor divider connected to the VFB pin. In the event of fault voltage VER which is externally adjustable (25 V maximum) through conditions that produce VFB either open or shorted, the switcher is shut down.
CS2001 Datasheet
