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HSW-EUP3253 Ver1
60V, 3A, Asynchronous Step-Down Converter with Programmable Frequency
DESCRIPTION
The EUP3253 is a 60V, 3A, step down regulator with
an integrated high side MOSFET. The EUP3253
adopting the peak current mode control, supports the
PSM mode which assists the converter on achieving
high efficiency at light load or standby condition.
The EUP3253 features programmable switching
frequency from 100 kHz to 2MHz with an external
resistor, which provides the flexibility to optimize either
efficiency or external component size. The converter
supports external clock synchronization with a
frequency band from 160 kHz to 2MHz. The EUP3253
allows power conversion from high input voltage to low
output voltage with a minimum 130ns on-time of high
side MOSFET.
Fault protection includes secondary cycle-by-cycle
current limit, short circuit protection and thermal
shutdown. Internal soft-start minimizes the inrush
supply current and the output overshoot at initial startup.
The EUP3253 is available in an 8-pin SOP-8(EP)
package.
Typical Application Circuit
FEATURES
Wide Input Voltage Range: 4.5V to 60V
High Efficiency at Light Loads with PSM
Mode
150µA Operating Quiescent Current
3µA Shutdown Current
100kHz to 2MHz Fixed Switching Frequency
Synchronizes to External Clock
Adjustable UVLO Voltage and Hysteresis
0.8V 1% Internal Voltage Reference
Internal Soft-start
Short Circuit Protection
Thermal Shutdown
SOP-8(EP) Package
APPLICATIONS
Vehicle Accessories : GPS, Entertainment
12-V, 24-V, 48-V Industrial, Automotive
and Communications Power Systems
USB Dedicated Charging Ports and Battery
Chargers
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