NCP1546 Datasheet (ON Semiconductor)

NCP1546, Buck Regulator

SO *8 DFN *18 PIN SYMBOL FUNCTION 1 1 BOOST The BOOST pin provides additional drive voltage to the on *chip NPN power transistor.

The resulting decrease in switch on voltage increases efficiency.

2 2 *4 VIN This pin is the main power input to the IC.

3 5 *7

NCP1546 1.5 A, 170 kHz, Buck Regulator with Synchronization Capability The NCP1546 is a 1.5 A buck regulator IC operating at a fixed frequency of 170 kHz.

The device uses the V2t control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation for today’s high speed logic.

The NCP1546 accommodates input voltages from 4.0 V to 40 V and contains synchronization circuitry.

The on chip NPN transistor is capable of p

NCP1546 Features

* V2 Architecture Provides Ultra

* Fast Transient Response, Improved Regulation and Simplified Design

* Wide Operating Range: 4 V to 40 V

* 2.0% Error Amp Reference Voltage Tolerance

* Switch Frequency Decrease of 4:1 in Short Circuit Conditions Reduces Short Ci