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EUP3504 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – 1.8A Line Switch with Low On-Resistance | |||
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EUP3504
1.8A Line Switch with
Low On-Resistance
DESCRIPTION
The EUP3504 is a low dropout line switch IC with ON/OFF
control and output current protection which integrates a
P-channel MOSFET.
By connecting the EUP3504 to the output pin of a step-down
DC/DC converter, the EN pin controls ON/OFF for each
distribution switch to deliver power per requirements and
maximize total power efficiency. As a result, the EUP3504
helps to extend battery life and product operation time.
The EUP3504 contains a current limit protection circuit so
these are not required externally unlike discrete circuit
solutions where MOSFETs and resistors are used. Externally
programmable soft-start allows for proper power on
sequencing with respect to other power supplies and avoids
input inrush current during startup.
When a low signal is input to the EN pin, the IC enters
shutdown mode. Even where a load capacitor is connected to
the output pin during shutdown, the electric charge stored at
the load capacitor is discharged through the internal switch.
As a result, the VOUT pin voltage falls quickly to the GND
level. The EUP3504 contains thermal shutdown protection.
FEATURES
3.3V to 13.5V Input Voltage Range
110m⦠On Resistance
Low 90µA Quiescent Current
Low Shutdown Currentï¼<4µA
ON/OFF Control Function
Externally Programmable Current Soft-Start
High Speed Auto Discharge Function
Operating Temperature Range: -40°C ~+85°C
2.35A Output Current Limit
Thermal Shutdown
RoHS Compliant and 100% Lead (Fb)-Free
Halogen-Free
APPLICATIONS
Portable Equipment
Laptop, Palmtops, Notebook Computers
LCD Monitor TV
Typical Application Circuit
DS3504 Ver1.2 Apr. 2014
Figure 1.
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