CS5101

CS5101 CS5101 Secondary Side Post Regulator for AC/DC and DC/DC Multiple Output Converters Description The CS5101 is a bipolar monolithic secondary side post regulator (SSPR) which provides tight regulation of multiple output voltages in AC-DC or DC-DC converters. Leading edge pulse width modulation is used with the CS5101. The CS5101 is designed to operate over an 8V to 45V supply voltage (VCC) range and up to a 75V drive voltage (VC). The CS5101 features include a totem pole output with 1.5A peak output current capability, externally programmable overcurrent protection, an on chip 2% precision 5V reference, internally compensated error amplifier, externally synchronized switching frequency, and a power switch drain voltage monitor. It is available in a 14 lead plastic DIP or a 16 lead wide body SO package. Features s 1.5A Peak Output (Grounded Totem Pole) s 8V to 75V Gate Drive Voltage s 8V to 45V Supply Voltage s 300ns Propagation Delay s 1% Error Amplifier Reference Voltage s Lossless Turn On and Turn Off s Sleep Mode: < 100µA s Overcurrent Protection with Dedicated Differential Amp s Synchronization to External Clock s External Power Switch Drain Voltage Monitor Application Diagram VSY L1 1 TR CR4 3 Q1 4 5 R10 VOUT 6 R5 R6 CR5 R8 R11 R13 + C6 Package Options 14L PDIP SYNC 1 R9 R12 R14 VD VC VG PGnd IS COMP ISIS+ Gnd CR1 C5 + VCC VREF LGnd R1 R2 CR3 R7 VFB COMP VSYNC VCC R3 CR2 VREF LGnd VFB + C1 C2 R4 COMP RAMP VD RAMP CS5101 SSPR VC VG C4 ...