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PDF YB1901 Data sheet ( Hoja de datos )
| Número de pieza | YB1901 | |
| Descripción | 2.0A High-Side Power Switch | |
| Fabricantes | YOBON TECHNOLOGIES | |
| Logotipo |  |
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YB1901
2.0A High-Side Power Switch with Flag
Description
The YB1901 is a low operation voltage,
single N-channel MOSFET high-side
power switch, optimized for low power
consumption system. A small internal
charge-pump circuitry is built in the
YB1901 to drive the internal MOSFET
switch for reaching an average RDS(ON)
resistance of 120mΩ. A fault flag output is
available to indicate an abnormal condition
during operation.
Some other features include low in-rush
current during plug-in, thermal shutdown to
prevent switch failure from high-current
loads, under-voltage lock-out to keep the
chip off when below normal operation
supply, a short-circuit protection to avoid
grounded big current. The quiescent
current needed to run the change-pump is
as low as 60μA at 5V input. It makes the
device ideal for portable battery operated
system.
The YB1901 power switch is available in
SOT-25, MSOP8, SOP8 packages.
Features
Built-In N-Channel MOSFET
Typical RDS(ON) Resistance : 120 mΩ
Low Quiescent Current : 60μA at 5V
Low Shutdown Current : <1μA
Current Limit at 2.0A
Wide Input Voltage Range : 2.7 ~ 5.5V
Hot Plug-In Application
2.4V Under-Voltage Lock-Out
Thermal Shutdown Protection
Short-Circuit Protection
Reverse Current Flow Blocking
Open-Drain Fault Flag
SOT-25, MSOP8, SOP8 Packages
Green Package (RoHS) Available
Applications
PDA, DSC, GPS
USB Peripherals
PC Cards
PCMCIA Cards
Notebook PC
Battery-Charger Circuits
Battery-Powered Instruments
Typical Application Circuit
2.7~5V
VIN Vout
System
Power
ON
OFF
1u
YB1901
100K
1u
EN OCB
Fault
Flag
YB1901 Rev.1.2
Figure 1: Typical Application Circuit
www.yobon.com.tw
1
1 page  
YB1901
2.0A High-Side Power Switch with Flag
Typical Characteristics
At TA=25℃, VIN=5V, CIN=COUT=1.0μF, VEN=VIN, unless otherwise noted.
Turn on delay time and rising time
Turn off delay time and falling time
RL=5Ω
Cout=100uF
RL=5Ω
Cout=100uF
Inrush current and different load capacitance
RL=5Ω
Thermal shutdown reponse
RL=1Ω
Cout=47uF
UVLO at rising
RL=33Ω
UVLO at falling
RL=33Ω
YB1901 Rev.1.2
www.yobon.com.tw
5
5 Page 
YB1901
2.0A High-Side Power Switch with Flag
Package Information (MSOP-8)
YB1901 Rev.1.2
www.yobon.com.tw
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet YB1901.PDF ] | |
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