TPS65235-1RUKR Description

The TPS65235-1RUKR is an LNB Voltage Regulator With I²C Interface offering a complete solution with the minimum component count, and low power dissipation together with a simple design and an I²C standard interface.

TPS65235-1RUKR Features

• Complete integrated solution for LNB and I2C interface

• DiSEqC 2.x, and DiSEqC 1.x compatible

• Supports 5-V, 12-V, and 15-V power rail

• Up to 1000-mA accurate output current limit adjustable by an external resistor

• Boost switch peak current limit proportional to LDO current limit

• Boost converter with 140-mΩ low R_ds(on) internal power switch

• Boost switching frequency 1-MHz or 500-kHz selectable

• Audible noise avoided at force PWM mode

• Dedicated enable pin for non-I2C application

• Low-dropout (LDO) regulator with push-pull output stage for VLNB output

• Built-in accurate 22-kHz tone generator and external tone input support

• Supports both external 44-kHz and 22-kHz tone input

• Adjustable soft start and 13-V to the 18-V voltage transition time

• 650-mV to 750-mV 22-kHz tone amplitude selection

• I2C registers accessible with EN low

• Short circuit dynamic protection

• Diagnostics for output voltage level, DiSEqC tone input and output, current level, and cable connection

• Thermal protection available

• 20-pin WQFN 3-mm × 3-mm (RUK) package

TPS65235-1RUKR Applications

• Set-top box satellite receiver

• TV satellite receiver

• PC card satellite receiver

• Satellite TV