Stmicroelectronics (L6902D) DC-DC Switching Buck (Step Down) Regulator

DC-DC Switching Buck (Step Down) Regulator, Adjustable, 8V-36Vin, 1.235V-34Vout, 1Aout, SOIC-8 Product Overview The L6902D is a complete and simple step-down Switching Regulator with adjustable current limit. Based on a voltage-mode structure it integrates a current error amplifier to have a constant voltage and constant current control. By means of an on board current sense resistor and the availability of the current sense pins (both compatible to Vcc and for Cs- compatible with GND too) a current limit programming is very simple and accurate (±5%). Moreover constant current control can be used to charge NiMH and NiCd batteries. The device can be used as a standard DC/DC converter with adjustable current limit (set by using the external sense resistor). The internal robust P-channel DMOS transistor with a typical of 250mR assures high efficiency and a minimum dropout even at high output current level. The internal limiting current (latched function) of typical value of 2.5A protects the device from accidental output short-circuit avoiding dangerous loads damage. Voltage feed-forward Zero load current operation Adjustable current limit Protection against feedback disconnection Thermal shutdown Overvoltage and frequency foldback overcurrent protection Precise 3.3V (±2%) reference voltage 5% Output current accuracy Applications Power Management, Computers & Computer Peripherals Product Information Topology: Buck (Step Down) Input Voltage Min: 8V Input Voltage Max: 36V No. of Outputs: 1Outputs DC / DC Converter IC Case: SOIC No. of Pins: 8Pins Output Current: 1A Output Voltage Min: 1.235V Output Voltage Max: 34V Switching Frequency: 275kHz Operating Temperature Max: 150°C