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Eutech Microelectronics

EUP2573 Datasheet Preview

EUP2573 Datasheet

1.2MHz Step-Up PWM Controller

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EUP2573
1.2MHz Step-Up PWM Controller
DESCRIPTION
The EUP2573 is a compact, high efficiency, fixed
frequency pulse-width-modulation (PWM) controller.
It provides an easy-to-use power supply solution for
the application from one Li-ion battery to 5V output.
All compensation and protection circuitry are
integrated to minimize external components. The
1.2MHz high switching frequency allows smaller
inductor and output capacitor, making the EUP2573
ideally suited for small battery-powered applications
and saves PCB space.
The EUP2573 contains thermal shutdown function and
output short protection circuit. Built-in soft-start
circuitry prevents excessive inrush current during
start-up.
The EUP2573 is available in a Pb-free, thin-SOT23-5
and SOT23-6 packages.
FEATURES
VDD Range: 2.7V to 5.5V
High Efficiency up to 90%
1.2MHz Fixed Switching Frequency
Tiny External Components
Output Short Protection
<1ยตA Shutdown Current
3.3V to +5.0V Distributed Power Supply
Single Cell Li-ion Battery to 5V Converter
Available in SOT23-5 and SOT23-6 Packages
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
One Li-Ion Battery to 5V Output
Handheld Devices
Typical Application Circuit
DS2573 Ver1.1 Dec. 2012
Figure 1. Connecting VDD to VIN
1




Eutech Microelectronics

EUP2573 Datasheet Preview

EUP2573 Datasheet

1.2MHz Step-Up PWM Controller

No Preview Available !

Typical Application Circuit (Continued)
EUP2573
Figure 2. Connecting VDD to VOUT
Pin Configurations
Package
Type
Pin Configurations
Package
Type
Pin Configurations
SOT23-5
SOT23-6
Pin Description
PIN
EN
GND
EXT
VDD
FB
NC
SOT23-5
1
2
3
4
5
-
SOT23-6
4
5
6
1
3
2
DESCRIPTION
Enable input. EN is an active high asserted input. Set EN lower than 0.4V
will disable EUP2573.
Ground.
Output of MOSFET gate driver. Connect this pin to the gate of the external
MOSFET.
Power input. Connect VDD to the input power supply or to the output of the
regulator.
Feedback pin.
No connect.
DS2573 Ver1.1 Dec. 2012
2


Part Number EUP2573
Description 1.2MHz Step-Up PWM Controller
Maker Eutech Microelectronics
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EUP2573 Datasheet PDF






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