NCP81044 Datasheet (ON Semiconductor) - Low Voltage Synchronous Buck Controller

NCP81044, Low Voltage Synchronous Buck Controller

Pin No.

1 Symbol BST Description Supply rail for the floating top gate driver.

To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BST pin).

Connect a capacitor (CBST) between this pin and the PHASE pin.

Typical values for CBST range fr

NCP81044 Product Preview Low Voltage Synchronous Buck Controller The NCP81044 is a PWM controller designed to operate from a 5 V or 12 V supply.

These devices are capable of producing an output voltage as low as 0.8 V.

These 8 pin devices provide an optimal level of integration to reduce size and cost of the power supply.

The NCP81044 provides a 1 A gate driver design and an internally set 275 kHz oscillator.

In addition to the 1 A gate drive capability, other efficiency enhancing featur

NCP81044 Features

* of the gate driver include adaptive non

* overlap circuitry. The devices also incorporate an externally compensated error amplifier and a capacitor programmable soft

* start function. Protection features include programmable short circuit protection and under voltage lockout (UVLO). The