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Philips Semiconductors
TOPFET high side switch
SMD version of BUK210-50Y
UNDERVOLTAGE & OVERVOLTAGE CHARACTERISTICS
Limits are at -40˚C ≤ T
mb
SYMBOL PARAMETER
Undervoltage
V
Low supply threshold voltage
BG(UV)
∆V
Hysteresis
BG(UV)
Overvoltage
V
High supply threshold voltage
BG(OV)
∆V
Hysteresis
BG(OV)
TRUTH TABLE
ABNORMAL CONDITIONS
INPUT
SUPPLY
UV
OV
L
X
H
0
H
0
H
1
H
0
H
0
H
0
KEY TO ABBREVIATIONS
L
logic low
H
logic high
X
don't care
0
condition not present
1
condition present
1 Undervoltage sensor causes the device to switch off and reset.
2 Overvoltage sensor causes the device to switch off to protect its load.
3 The status will continue to indicate OT (even if the input goes low) until the device cools below the reset threshold. Refer to
PROTECTION CHARACTERISTICS
May 2001
≤ 150˚C and typicals at T
CONDITIONS
1
2
DETECTED
LOAD
LC
SC
OT
X
X
X
0
0
0
0
1
0
0
X
X
1
X
0
0
0
1
0
0
0
.
= 25 ˚C. Refer to
mb
LOAD
OUTPUT
STATUS
X
OFF
0
ON
0
ON
X
OFF
0
OFF
X
OFF
1
OFF
UV undervoltage
OV overvoltage
LC low current or open circuit load
SC short circuit
OT overtemperature
5
.
TRUTH TABLE
MIN.
TYP.
2
4.2
-
0.5
40
45
-
DESCRIPTION
H
off
H
on & normal
L
on & low current detect
H
supply undervoltage lockout
H
supply overvoltage shutdown
L
SC tripped
3
L
OT shutdown
Product specification
BUK215-50Y
MAX.
UNIT
5.5
V
-
V
50
V
1
-
V
OVERLOAD
Rev 1.010
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