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TPS652353

ACTIVE

LNB voltage regulator with I2C interface

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Data sheet

TPS652353

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 4.5 Vin (max) (V) 20 Topology Boost Type Converter Switching frequency (min) (kHz) 977 Switching frequency (max) (kHz) 1134 Features Adjustable current limit, I2C, Nonsynchronous, Power good Vout (min) (V) 13.25 Vout (max) (V) 18.4 Rating Catalog Operating temperature range (°C) -40 to 125
Vin (min) (V) 4.5 Vin (max) (V) 20 Topology Boost Type Converter Switching frequency (min) (kHz) 977 Switching frequency (max) (kHz) 1134 Features Adjustable current limit, I2C, Nonsynchronous, Power good Vout (min) (V) 13.25 Vout (max) (V) 18.4 Rating Catalog Operating temperature range (°C) -40 to 125
WQFN (RUK) 20 9 mm² 3 x 3
  • Complete integrate solution for LNB and I 2C 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 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 Forced PWM mode
  • Dedicated enable pin for non-I 2C 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 18-V voltage transition time
  • 650-mV to 750-mV 22-kHz tone amplitude selection
  • Selectable overcurrent time 29 ms / 58 ms
  • I 2C 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
  • Complete integrate solution for LNB and I 2C 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 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 Forced PWM mode
  • Dedicated enable pin for non-I 2C 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 18-V voltage transition time
  • 650-mV to 750-mV 22-kHz tone amplitude selection
  • Selectable overcurrent time 29 ms / 58 ms
  • I 2C 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

Designed for analog and digital satellite receivers, the TPS652353 is a monolithic voltage regulator with I 2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. The device offers a complete solution with minimum component count, low power dissipation together with simple design and I 2C standard interface.

The TPS652353 features high-power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1-MHz or 500-kHz selectable switching frequency. Dropout voltage at the linear regulator is 0.8 V to minimize power loss. The TPS652353 provides multiple ways to generate the 22-kHz signal. Integrated linear regulator with push-pull output stage generates 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 I 2C is available for system monitoring.

The TPS652353 has a special design at forced PWM mode to avoid the audible noise especially when VIN is higher or closer to the VLNB output.

The TPS652353 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.

Designed for analog and digital satellite receivers, the TPS652353 is a monolithic voltage regulator with I 2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. The device offers a complete solution with minimum component count, low power dissipation together with simple design and I 2C standard interface.

The TPS652353 features high-power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1-MHz or 500-kHz selectable switching frequency. Dropout voltage at the linear regulator is 0.8 V to minimize power loss. The TPS652353 provides multiple ways to generate the 22-kHz signal. Integrated linear regulator with push-pull output stage generates 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 I 2C is available for system monitoring.

The TPS652353 has a special design at forced PWM mode to avoid the audible noise especially when VIN is higher or closer to the VLNB output.

The TPS652353 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.
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Technical documentation

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* Data sheet TPS652353 LNB Voltage Regulator with I2C Interface datasheet (Rev. D) PDF | HTML 03 May 2023
Application note DiSEqC™ 2.x Filter Optimization PDF | HTML 11 May 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS65235EVM-694 — TPS65235 LNB Voltage Regulator with I2C Interface Evaluation Module for DisEqC2.x

The TPS65235EVM-694 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65235 for DisEqC2.x application. The EVM contains input and output connectors as well as control jumpers to easily evaluate the device features. Compared with TPS65235EVM-747, the (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPS65235EVM-747 — TPS65235 LNB Voltage Regulator with I2C Interface Evaluation Module for DisEqC1.x

The TPS65235EVM-PWR747 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65235 for DisEqC1.x application. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features. The TPS65235 is a monolithic voltage regulator (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS65235-3 EVM Design Files

SLVMD80.ZIP (584 KB) - TINA-TI Reference Design
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WQFN (RUK) 20 View options
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