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Eutech Microelectronics

EUP2627 Datasheet Preview

EUP2627 Datasheet

620kHz/1.25MHz Step-up DC/DC Converter

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EUP2627
620kHz/1.25MHz Step-up DC/DC Converter
DESCRIPTION
The EUP2627 is a high performance current mode, PWM
step-up converter with pin selectable operating frequency.
With an internal 3.5A, 160mMOSFET, it can generate
12V at up to 500mA output current from a 5V supply. The
selectable 620kHz and 1.25MHz allows smaller inductors
and faster transient response. An external compensation pin
gives the user greater flexibility in setting loop
compensation allowing the use of low ESR Ceramic output
capacitors. Soft-start is controlled with an external
capacitor, which determines the input current ramp rate
during start-up.
When shut down, it draws10µA of current and can
operate down to 2.5V input supply. These features along
with 1.25MHz switching frequency makes it an ideal
device for portable equipment and TFT-LCD displays.
The EUP2627 is available in an 10-pin TDFN and MSOP-8
(EP) packages. The device is specified for operation over
the full -40°C to +85°C temperature range.
FEATURES
90% Efficiency
3.5A, 160mPower MOSFET
2.5V to 5.5V Input Range
Adjustable Output Voltage up to 28V
620kHz/1.25MHz Switching Frequency Selection
Adjustable Soft-Start
Internal Thermal Protection
Small TDFN-10 and MSOP-8 (EP) Packages
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
TFT-LCD Displays
DSL Modems
Set-Top Boxes
PCMCIA Cards
Portable Equipment
Handheld Devices
Typical Application Circuit
DS2627 Ver1.1 Mar. 2011
Figure 1.
1




Eutech Microelectronics

EUP2627 Datasheet Preview

EUP2627 Datasheet

620kHz/1.25MHz Step-up DC/DC Converter

No Preview Available !

Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
EUP2627
Typical Application Circuit (continued)
Pin Configurations
Package
Type
Figure 2. Multiple-Output TFT LCD Power Supply
Pin Configurations
Package
Type
Pin Configurations
TDFN-10
MSOP-8
(EP)
Pin Description
PIN
COMP
FB
SHDN
GND
SW
VIN
FSEL
SS
TDFN-10 MSOP-8 (EP)
11
22
33
4.5 4
6.7 5
86
97
10 8
DESCRIPTION
Compensation pin. Output of the internal error amplifier. Capacitor and resistor
from COMP pin to ground.
Voltage feedback pin. Internal reference is 1.24V NOMINAL. Connect a
resistor divider from VOUT. VOUT=1.24V (1+R1/R2).
Shutdown control pin. Pull SHDN low to turn off the device.
Analog and power ground.
Power switch pin. Switch connected to the drain of the internal power
MOSFET.
Analog power input pin.
Frequency select pin. When FSEL is connected to GND, switching frequency is
set to 620kHz. When connected to VIN, switching frequency is set to 1.25MHz
Soft-start control pin. Connect a capacitor to control the converter start-up
DS2627 Ver1.1 Mar. 2011
2


Part Number EUP2627
Description 620kHz/1.25MHz Step-up DC/DC Converter
Maker Eutech Microelectronics
PDF Download

EUP2627 Datasheet PDF






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