EC9413 Converter Datasheet

EC9413 Datasheet, PDF, Equivalent


Part Number

EC9413

Description

2A 380KHZ 20V PWM Buck DC/DC Converter

Manufacture

E-Cmos

Total Page 10 Pages
Datasheet
Download EC9413 Datasheet


EC9413
EC9413
2A 380KHZ 20V PWM Buck DC/DC Converter
General Description
The EC9413 is a 380 KHz fixed frequency
monolithic step down switch mode regulator with a
built in internal Power MOSFET. It achieves 2A
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.
The EC9413 serves as ideal power supply units for
portable devices.
Block Diagram
Features
z 2A Constant Output Current
z 140mRDSON Internal Power PMOSFET
Switch
z Up to 95% Efficiency
z Fixed 380KHz Frequency
z Wide 3.6V to 20V Input Voltage Range
z Output Adjustable from 1.20V to 18V
z Built in Frequency Compensation
z Built in Thermal Shutdown Function
z Built in Current Limit Function
z SOP8 Package is Available
z The minimum dropout up to 0.3V
Applications
z Portable DVD
z LCD Monitor / TV
z Battery Charger
z ADSL Modem
z Telecom / Networking Equipment
E-CMOS Corp. (www.ecmos.com.tw)
Page 1 of 10
2007/08/21

EC9413
EC9413
2A 380KHZ 20V PWM Buck DC/DC Converter
Pin Configuration
Pin Description
Pin No.
1
2
3
4
Symbol
FB
Description
Feedback Pin. Through an external resistor divider
network, FB senses the output voltage and
regulates it. The feedback threshold voltage is
1.20V.
EN
Enable Pin. Drive EN pin high to turn on the
device, drive it low to turn it off.
NC Not Connect
Supply Voltage Input Pin. EC9413 operates from a
Vin
3.6V to 20V DC voltage. Bypass Vin to GND with a
suitably large capacitor to eliminate noise on the
input.
5,6
SW
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
7,8 GND output capacitor ground path to prevent switching
current spikes from inducing voltage noise into
EC9413.
Ordering/ Marking Information
Circuit Type
EC9413 N- F
F: Lead-Free
Package: N = SOP8
Package type
Part Number
SOP8
EC9413N-F
Marking
EC9413-F
YYWW
XXXXXXXX
Marking Information
F is Lead free package.
YY is the year of production. 06 means the
product is manufactured in year of 2006.
WW is the week of production. 25 means the
product is manufactured in the 25th week.
XXXXXXXX is Lot number.
E-CMOS Corp. (www.ecmos.com.tw)
Page 2 of 10
2007/08/21


Features EC9413 2A 380KHZ 20V PWM Buck DC/DC Conv erter General Description The EC9413 i s a 380 KHz fixed frequency monolithic step down switch mode regulator with a built in internal Power MOSFET. It achi eves 2A continuous output current over a wide input supply range with excellen t load and line regulation. The device includes a voltage reference, oscillati on circuit, error amplifier, internal P MOS 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. The EC9413 serves as i deal power supply units for portable de vices. Block Diagram Features z 2A Con stant Output Current z 140mΩ RDSON In ternal Power PMOSFET Switch z Up to 95% Efficiency z Fixed 380KHz Frequency z Wide 3.6V to 20V Input Voltage Range z Output Adjustable from 1.20V to 18V z Built in Frequency Compensa.
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