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ST890 Fiches technique(PDF) 2 Page - STMicroelectronics

No de pièce ST890
Description  1.2A CURRENT LIMITED HIGH SIDE WITH THERMAL SHUTDOWN
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST890 Fiches technique(HTML) 2 Page - STMicroelectronics

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Table 2: Absolute Maximum Ratings
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Table 3: Thermal Data
(*) This value depends from thermal design of PCB on which the device is mounted.
Table 4: Truth Table For ON/OFF Switch
Figure 2: Pin Connection (top view)
Table 5: Pin Description
Symbol
Parameter
Value
Unit
VI
Supply Voltage
-0.5 to 6
V
VON
Input Voltage at ON pin
-0.5 to 6
V
VFAULT_N Input Voltage at FAULT_N pin
-0.5 to 6
V
VSET
Voltage at SET pin
-0.5 to (VIN + 0.5)
V
IDS
Maximum Continuous Switching Current
1.5
A
Tstg
Storage Temperature Range
-65 to +150
°C
Top
Operating Junction Temperature Range (C series)
(B series)
0 to +70
-40 to +85
°C
°C
Symbol
Parameter
SO-8
Unit
Rthj-amb
Thermal Resistance Junction-ambient (*)
160
°C/W
ON/OFF
OUT
LON
HOFF
FAULT
FLAG
H
Normal Operation
L
Fault Condition
Pin N°
Symbol
Name and Function
1, 2
IN
Input P-Channel MOSFET source. Bypass IN with a 1
µF capacitor to ground.
3ON
Active Low Switch On Input. A logic low turns the switch ON
4
GND
Ground
5
SET
Set Current Limit Input. A resistor from SET to GROUND sets the current limit for
the switch. RSET=1.38x10
3/I
LIM, where ILIM is the desired current limit in Amperes
6, 7
OUT
Switch Output. P-Channel MOSFET drain. Bypass OUT with a 0.1µF capacitor to
GROUND.
8FAULT
Fault Indicator Output. This open drain output goes low when in current limit or
when the die temperature exceeds 135°C


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