TPS65233 Datasheet, PDF (1/31 Pages) Texas Instruments – LNB VOLTAGE REGULATOR WITH I2C INTERFACE

TPS65233
www.ti.com
SLVSC22A – AUGUST 2013 – REVISED SEPTEMBER 2013
LNB VOLTAGE REGULATOR WITH I²C INTERFACE
Check for Samples: TPS65233
FEATURES
1
• Complete Integration Solution for LNB and I²C
• DiSEqC 1.x Compatible
• Supports 5-V and 12-V Power Bus
• Up to 1000-mA Accurate Output Current Limit
Adjustable by External Resistor and I2C
• Boost Converter With Low R_dson Internal
Power Switch
• Dedicated Enable Pin for Non-I²C Application
• Low Noise, Low Drop Output With Push-Pull
Output Stage
• Built-In Accurate 22-kHz Tone Generator or
External Pin
• Adjustable Soft-Start and 13-V/18-V Voltage
Transition Time
• Compliant with main satellite receiver systems
Specifications
• LNB Short Circuit Dynamic Pprotection
• Diagnostics for Output Voltage Level, Input
Supply UVLO, and DiSEqC Tone Output
• Cable Disconnect Diagnostic
• Available in a 16-Pin QFN 3-mm x 3-mm (RTE)
Package
APPLICATIONS
• Set Top Box Satellite Receiver
• TV Satellite Receiver
• PC Card Satellite Receiver
DESCRIPTION/ORDERING INFORMATION
Designed for analog and digital satellite receivers, the TPS65233 is a monolithic voltage regulator with I²C
interface, specifically to provide the 13-V/18-V power supply and the 22-kHz tone signaling to the LNB down-
converter in the antenna dish or to the multi-switch box. It offers a complete solution with very low component
count, low power dissipation together with simple design and I²C standard interfacing.
TPS65233 features high power efficiency. The boost converter integrates a 120-mΩ power MOSFET running at
500-kHz switching frequency. Drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65233
provides multiple ways to generate the 22-kHz signal. Integrated linear regulator with push-pull output stage
generates clean 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear
regulator can be programmed by external resistor with ±10% accuracy. Full range of diagnostic read by I²C is
available for system monitoring.
The part is available in a 16-pin QFN 3-mm x 3-mm (RTE) package.
T_A
-40°C to 85°C
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
PART NUMBER
16-Pin (QFN) - RTE
Reel of 2500
TPS65233RTE
TOP-SIDE MARKING
TPS65233RTE
(1) For the most current packaging and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated