FEATURES
Two Independent Controllers on One Chip Two 2.525 V Outputs Shutdown Inputs to Control Each Channel ؎2.5% Accuracy Over Line, Load, and Temperature Low Quiescent Current Low Shutdown Current Works with External N-Channel MOSFETs for Low Cost “Hiccup Mode” Fault Protection No External Voltage or Current Setting Resistors Small, 8-Lead SO Package APPLICATIONS
Desktop Computers Servers Workstations Precision Dual Voltage Regulator Controller ADM1052 GENERAL DESCRIPTION
The ADM1052 operates from a 12 V supply. This gives sufficient headroom for the amplifiers to drive external N-channel MOSFETs, operating as source-followers, as the external series pass devices. This has the advantage that N-channel devices are cheaper than P-channel devices of similar performance, and the circuit is easier to stabilize than one using P-channel devices in a common-source configuration. FUNCTIONAL BLOCK DIAGRAM 3.3V VCC CONTROL AMPLIFIER BANDGAP REFERENCE FORCE 1 100●F ADM1052 VCC SENSE 1 50●A SHUT...
Analog Devices
