UA78S40PC Universal Switching Regulator Subsystem DIP-16

UA78S40PC Universal Switching Regulator Subsystem DIP-16

The UA78S40PC is a switching regulator subsystem, consisting of a temperature compensated voltage reference, controlled-duty cycle oscillator with an active current limit circuit, comparator, high—current and high-voltage output switch, capable of 1.5 A and 40 V, pinned-out power diode and an uncommitted operational amplifier, which can be powered up or down independent of the IC supply. The switching output can drive external NPN or PNP transistors when voltages greater the 40 V, or currents in excess of 1.5 A, are required. Some of the features are wide-supply voltage range, low standby current, high efficiency and low drift. The pA78S40 is available in commercial (0° to + 70°C).

Features:

• Output Adjustable from 1.25 V to 40 V
• Peak Output Current of 1.5 A Without External Transistor
• 80 dB Line and Load Regulation
• Operation from 2.5 V to 40 V Supply
• Low Standby Current Drain
• High Gain, High Output Current, Uncommitted Op Amp

Specifications

Pin Configuration:

Applications:

• Step-up (Boost) switching regulator circuits.
• Step-down (Buck) switching regulator circuits.
• Inverting (Buck-Boost) switching regulator circuits.
• Efficient power management in battery-operated electronic systems.
• High-voltage, high-current regulation using external power transistors.
• Power conditioning where low standby current and high efficiency are required.

Datasheet:

UA78S40