NCP4328 Datasheet (ON Semiconductor) - Secondary Side CV/CC Controller

NCP4328, Secondary Side CV/CC Controller

NCP4328A TSOP *5 NCP4328B TSOP *6 1 1 2 2 5 6 4 4 * 5 3 3 Pin Name VCC GND VSNS ISNS LED FBC Description Supply voltage pin Ground Output voltage sensing pin, connected to output voltage divider Current sensing input for output current regulation, connect it to

DATA SHEET www.onsemi.com Secondary Side CV/CC Controller NCP4328 The NCP4328 is a secondary side SMPS controller designed for use in applications which requires constant current and/or constant current regulation.

The NCP4328x consists of two OTA amplifiers for voltage and current loop regulation with precise internal voltage references.

Outputs of OTAs are open drain type (OTAs sink current only).

The NCP4328B includes a LED driver pin implemented with an open drain MOSFET driven by a 1 kHz s

NCP4328 Features

* Operating Input Voltage Range: 2.5 V to 36.0 V

* Supply current < 100 mA

* 0.5% Reference Voltage Accuracy (TJ = 25C)

* Constant Voltage and Constant Current (A versions) Control Loop

* Indication LED PWM Modulated Driver (NCP4328B)

* These Devices are Pb

* Free, Ha