TPS65252RHDR

Product Summary

The TPS65252RHDR is a synchronous step down dual buck switcher. The TPS65252RHDR features two synchronous wide input range high efficiency buck converters. The converters aredesigned to simplify its application while giving the designer the option to optimize their usage according to thetarget application.The converters can operate in 5-, 9- or 12-V systems and have integrated power transistors. The output voltagecan be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. The applications of the TPS65252RHDR include DTV, DSL Modems, Cable Modems, Set Top Boxes, Car DVD Players, Home Gateway and Access Point Networks, Wireless Routers.

Parametrics

TPS65252RHDR absolute maximum ratings: (1)Voltage range at VIN1,VIN2, LX1, LX2: -0.3 to 18V; (2)Voltage range at LX1, LX2 (maximum withstand voltage transient< 20 ns): -3 to 18V; (3)Voltage at BST1, BST2, referenced to Lx pin: -0.3 to 7V; (4)Voltage at V7V, COMP1, COMP2, USB_VIN, USB_VO: -0.3 to 7V; (5)Voltage at V3V, RLIM1, RLIM2, EN1,EN2, SS1, SS2, FB1, FB2, ROSC, LOW_P, USB_EN, USB_nILIM, PGOOD, rUSB: -0.3 to 3.6V; (6)Voltage at GND: -0.3 to 0.3V; (7)TJ, Operating virtual junction temperature range: -40 to 125℃; (8)TSTG, Storage temperature range: -55 to 150℃.

Features

TPS65252RHDR features: (1)Wide Input Supply Voltage Range(4.5 V - 16 V); (2)Output Range 0.8 to ~VIN - 1 V; (3)Fully Integrated Dual Buck, 3.5-A/2.5-A Maximum Current, 3-A/2-A Continuous Operation; (4)High Efficiency; (5)Switching Frequency: 300 kHz - 2.2 MHz Set By External Resistor; (6)External Enable/Sequencing Pins; (7)Adjustable Cycle-By-Cycle Current Limit SetBy External Resistor; (8)Soft Start Pins; (9)Current Mode Control With Simple Compensation Circuit; (10)Power Good and Reset Generator; (11)Low Power Mode Set By External Signal; (12)One Current Adjustable USB Switch With OverCurrent Protection; (13)Supervisory Circuit; (14)QFN Package, 28-Pin 5 mm x 5 mm RHD.

Diagrams