Electronic Components Datasheet Search |
|
TPS65253RHDR Datasheet(PDF) 1 Page - Texas Instruments |
|
|
TPS65253RHDR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page TPS65253 www.ti.com SLVSAW8 – JUNE 2011 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK CONVERTER WITH INTEGRATED FETS Check for Samples: TPS65253 • Current-Mode Control With Simple 1 FEATURES Compensation Circuit • Wide Input Supply Voltage Range: • Power Good and Reset Generator 4.5 V - 16 V • Low Power Mode Set By External Signal • Output Range: 0.8 V to ~VIN-1 V • Supervisory Circuit • Fully Integrated Dual Buck, 3.5-A/2.5-A • QFN Package, 28-Pin 5 mm x 5 mm RHD Continuous Current (4-A/3-A Maximum Current) APPLICATIONS • High Efficiency • 300-kHz - 1.2-MHz Switching Frequency Set by • DTV External Resistor • DSL Modems • External Eenable/Sequencing Pins • Cable Modems • Adjustable Cycle-by-Cycle Current Limit Set • Set Top Boxes by External Resistor • Car DVD Players • Soft-Start Pins • Home Gateway and Access Point Networks • Wireless Routers DESCRIPTION/ORDERING INFORMATION The TPS65253 features two synchronous wide input range high efficiency buck converters. The converters are designed to simplify product application while giving designers the options to optimize their usage according to the target application. The converters can operate in 5-, 9- and 12-V systems and have integrated power transistors. The output voltage can be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. Each converter features an enable pin that allows a delayed start-up for sequencing purposes, soft-start pin that allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIMx) pin that enables designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. The CMP pin allows optimizing transient versus dc accuracy response with a simple RC compensation. The switching frequency of the converters is set by an external resistor connected to ROSC pin. The switching regulators are designed to operate from 300 kHz to 1.2 MHz. The converters operate with 180 ° phase between then to minimize the input filter requirements. TPS65253 also features a low power mode enabled by an external signal, which allows for a reduction on the input power supplied to the system when the host processor is in stand-by (low activity) mode. TPS65253 features a supervisor circuit that monitors both converters and provides a PGOOD signal (End of Reset) with a 32-ms timer. TPS65253 is packaged in a small, thermally efficient 28-pin QFN package. ORDERING INFORMATION(1) TA PACKAGE(2) PART NUMBER TOP-SIDE MARKING -40 °C to 85°C 28-Pin (QFN) - RHD TPS65253RHD TPS65253 (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. Copyright © 2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Similar Part No. - TPS65253RHDR |
|
Similar Description - TPS65253RHDR |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |