ISL9491 Datasheet (Renesas) - Single Output LNB Supply Voltage Regulator

ISL9491, Single Output LNB Supply Voltage Regulator

SYMBOL VSW PGND CS SGND TCAP BYPASS VCC GATE VOUT VSENSE EXTM VSET0, VSET1 EN FAULT ILIMIT FUNCTION Input of the linear post-regulator.

Dedicated ground for the output gate driver of respective PWM.

Current sense input; connect the sense resistor RSC at this pin for desired peak overcurrent value

DATASHEET ISL9491, ISL9491A Single Output LNB Supply Voltage Regulator for Satellite Set-Top Box Applications FN6531 Rev 1.00 August 12, 2015 These devices are designed for supplying power and control signals from advanced satellite set-top box (STB) modules to the low noise blocks (LNBs) of single antenna ports.

Each device consists of a current-mode boost converter and a low-noise linear regulator along with the circuitry required for tone injection and pin controllable interface.

The devic

ISL9491 Features

* Single Chip Power Solution - Operation for 1-Tuner/1-Dish Applications

* Switch-Mode Power Converter for Lowest Dissipation - Boost PWMs with >92% Efficiency - Pin Controllable Enable and Output

* 2.5V/3.3V/5V Logic Compatible

* FAULT Signal

* DIRECTV SWM Co