DESCRIPTION
FEATURES
of the device include overload protection, soft start, remote inhibit, thermal protection, a reset output for microprocessors and a PWM comparator input for synchronization in multichip configurations. Efficient operation at switching frequencies up to 120kHz allows a reduction in the size and cost of external filter components. PIN CONNECTION (top view) MULTIWATT15 Horizontal (Plastic Package) ORDERING NUMBER : L4964HT July 2003 Pins 1, 4, 15 must not be connected. Leave open circuit. 1/13 L4964 PIN FUNCTIONS N° Name 1 N.C. 2 Output 3 Supply Voltage 4 N.C. 5 Soft Start 6 Inhibit Input 7 Sync Input 8 Ground 9 Frequency Compensation 10 Feedback Input 11 Oscillator 12 Reset Input 13 Reset Delay 14 Reset Output 15 N.C. Function Must not be connected. Leave open circuit. Regulator Output. Unregulated Voltage Input. An internal regulator powers the L4964’s internal logic. Must not be connected. Leave open circuit. Soft Start Time Constant. A capacitor is connected between this terminal and ground to define the soft start time constant.
STMicroelectronics
