DatasheetsPDF.com

TD2676 Dataheets PDF



Part Number TD2676
Manufacturers Techcode
Logo Techcode
Description 2.5A 52KHz 32V PWM Buck DC/DC Converter
Datasheet TD2676 DatasheetTD2676 Datasheet (PDF)

T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter DATASHEET TD2676 General Description  Features    The TD2676 is a 52 KHz fixed frequency monolithic step down switch mode regulator with a built in internal Power MOSFET. It achieves 2.5A continuous output current over a wide input supply range with excellent load and line regulation. The device includes a voltage reference, oscillation circuit, error amplifier, internal PMOS and etc. The PWM control circuit is able to adjust the d.

  TD2676   TD2676


Document
T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter DATASHEET TD2676 General Description  Features    The TD2676 is a 52 KHz fixed frequency monolithic step down switch mode regulator with a built in internal Power MOSFET. It achieves 2.5A continuous output current over a wide input supply range with excellent load and line regulation. The device includes a voltage reference, oscillation circuit, error amplifier, internal PMOS and etc. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function and a short circuit protection function are built inside. An internal compensation block is built in to minimize external component count. 2.5A Constant Output Current 80mΩ RDSON Internal Power PMOSFET Switch Up to 95% Efficiency Fixed 52KHz Frequency Wide 3.6V to 32V Input Voltage Range Output Adjustable from 0.8V to 30V Built in Frequency Compensation Built in Thermal Shutdown Function Built in Current Limit Function SOP-8 Package is Available The minimum dropout up to 0.3V Applications  The TD2676 serves as ideal power supply units for portable devices.   z z Portable DVD LCD Monitor / TV z Battery Charger z ADSL Modem z Telecom / Networking Equipment  Package Types                    Figure 1. Package Types of TD2676  December,  23,  2009.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com  1  T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter Pin Configurations  DATASHEET TD2676       Figure 2 Pin Configuration of TD2676 (Top View)  Pin Description  Pin Number 1,6, 8 2 3 4 5 7   Pin Name NC Vin SW GND FB EN Description Not Connect. Supply Voltage Input Pin. TD2676 operates from a 3.6V to 32V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. Power Switch Output Pin. SW is the switch node that supplies power to the output. Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into TD2676. Feedback Pin. Through an external resistor divider network, FB senses the output voltage and regulates it. The feedback threshold voltage is 0.8V. Enable Pin. EN is a digital input that turns the regulator on or off .Drive EN pin high to turn on the device, drive it low to turn it off.   December,  23,  2009.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com  2  T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter Ordering Information    DATASHEET TD2676 TD2676    □ □    Circuit Type                                                                                                                          Packing: Blank:Tube R:Type and Reel Package P: SOP8 Function Block  Figure 3 Function Block Diagram of TD2676     December,  23,  2009.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com  3  T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter   DATASHEET TD2676 Absolute Maximum Ratings  Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device  at  these  or  any  other  conditions  above  those  indicated  in  the  operation  is  not  implied.  Exposure  to  absolute  maximum  rating  conditions  for  extended  periods  may  affect  reliability.  Parameter Input Voltage  Feedback Pin Voltage  Enable Pin Voltage  Switch Pin Voltage  Power Dissipation  Operating Junction Temperature  Storage Temperature  Lead Temperature (Soldering, 10 sec)  ESD (HBM) Thermal Resistance‐Junction to Ambient  Thermal Resistance‐Junction to Case    Symbol VIN VFB VEN VSW PD TJ TSTG TLEAD   RθJA RθJC Value -0.3 to 32 ‐0.3 to Vin  -0.3 to 12 ‐0.3 to Vin  Internally limited  150  ‐65 to 150  260 2000  85 45 Unit V V V V mW ºC ºC ºC V  ºC / W ºC / W Recommended Operating Conditions  Parameter  Input Voltage Operating Junction Temperature Operating Ambient Temperature    Symbol VIN TJ TA Min. 3.6 -40 -10 Max. 32 125 85 Unit V ºC ºC December,  23,  2009.                                                        Techcode  Semiconductor  Limited                                                  www.techcodesemi.com  4  T  echcode®       2.5A 52KHz 32V PWM Buck DC/DC Converter Electrical Characteristics  DATASHEET TD2676 Specifications with boldface type are for full operationg temperature range, the other type are for TJ=25OC.  Note1: Thermal resistance with copper area of approximately 3 in2.  Parameters  Symbol  Test Condition  Min. Typ. Max.  Unit  Input voltage  Shutdown Supply C.


TD1591 TD2676 TD1609


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)