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TD2676 Datasheet

2.5A 52KHz 32V PWM Buck DC/DC Converter

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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
80mRDSON 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 




Techcode

TD2676 Datasheet Preview

TD2676 Datasheet

2.5A 52KHz 32V PWM Buck DC/DC Converter

No Preview Available !

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 


Part Number TD2676
Description 2.5A 52KHz 32V PWM Buck DC/DC Converter
Maker Techcode
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