Philips Semiconductors
Product specification
TOPFET high side switch
BUK214-50Y
SMD version of BUK209-50Y
UNDERVOLTAGE & OVERVOLTAGE CHARACTERISTICS
Limits are at -40˚C
≤
T
mb
≤
150˚C and typicals at T
mb
= 25 ˚C. Refer to
TRUTH TABLE
.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Undervoltage
V
BG(UV)
Low supply threshold voltage
1
2
4.2
5.5
V
∆
V
BG(UV)
Hysteresis
-
0.5
-
V
Overvoltage
V
BG(OV)
High supply threshold voltage
2
40
45
50
V
∆
V
BG(OV)
Hysteresis
-
1
-
V
TRUTH TABLE
ABNORMAL CONDITIONS
DETECTED
LOAD
INPUT
SUPPLY
LOAD
OUTPUT
STATUS
DESCRIPTION
UV
OV
LC
SC
OT
L
X
X
X
X
X
OFF
H
off
H
0
0
0
0
0
ON
H
on & normal
H
0
0
1
0
0
ON
L
on & low current detect
H
1
0
X
X
X
OFF
H
supply undervoltage lockout
H
0
1
X
0
0
OFF
H
supply overvoltage shutdown
H
0
0
0
1
X
OFF
L
SC tripped
H
0
0
0
0
1
OFF
L
OT shutdown
3
KEY TO ABBREVIATIONS
L
logic low
UV undervoltage
H
logic high
OV overvoltage
X
don’t care
LC
low current or open circuit load
0
condition not present
SC short circuit
1
condition present
OT overtemperature
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
OVERLOAD
PROTECTION CHARACTERISTICS
.
September 2002
5
Rev 2.000
