BUK205-50Y Philips Semiconductors, BUK205-50Y Datasheet - Page 4

• Manufacturer Part Number: BUK205-50Y
• Description: TOPFET high side switch SMD version of BUK201-50Y
• Manufacturer: Philips Semiconductors

Philips Semiconductors
PROTECTION FUNCTIONS AND STATUS INDICATIONS
Truth table for normal, open-circuit load and overload conditions and abnormal supply voltages.
STATUS CHARACTERISTICS
T
The status output is an open drain transistor, and requires an external pull-up circuit to indicate a logic high.
1 In the on-state, the switch detects whether the load current is less than the quoted open load threshold current. This is for status indication
2 After cooling below the reset temperature the switch will resume normal operation. The reset temperature is lower than the trip temperature by
3 If the overtemperature protection has operated, status remains low to indicate the overtemperature condition even if the input is taken low,
4 After short circuit protection has operated, the input voltage must be toggled low for the switch to resume normal operation.
5 Undervoltage sensor causes the device to switch off. Typical hysteresis equals 0.7 V.
6 Overvoltage sensor causes the device to switch off to protect the load. Typical hysteresis equals 1.3 V.
7 In a fault condition with the pull-up resistor short circuited while the status transistor is conducting.
8 The pull-up resistor also protects the status pin during reverse battery conditions.
July 1996
TOPFET high side switch
SMD version of BUK201-50Y
SYMBOL CONDITION
I
T
V
V
V
mb
SYMBOL PARAMETER
V
V
I
I
R
L(OC)
S
S
j(TO)
BL(TO)
BG(TO)
BG(LP)
SG
SG
S
= 25 ˚C.
only. Typical hysteresis equals 140 mA. The thresholds are specified for supply voltage within the normal working range.
typically 10 ˚C.
providing the device has not cooled below the reset temperature.
Normal on-state
Normal off-state
Open circuit load
Open circuit load
Over temperature
Over temperature
Short circuit load
Short circuit load
Low supply voltage
High supply voltage
Status clamping voltage
Status low voltage
Status leakage current
Status saturation current
Application information
External pull-up resistor
For input ‘0’ equals low, ‘1’ equals high, ‘X’ equals don’t care.
For status ‘0’ equals low, ‘1’ equals open or high.
For output switch ‘0’ equals off, ‘1’ equals on.
FUNCTIONS
4
1
2
3
5
6
8
7
CONDITIONS
I
I
V
V
V
S
S
SG
SS
SS
INPUT
= 100 A; V
= 50 A; V
= 5 V; R
= 5 V
= 5 V
X
X
1
0
1
0
1
0
1
0
TRUTH TABLE
4
S
STATUS
BG
= 0 ; V
IG
= 13 V; V
= 0 V
1
1
0
1
0
0
0
1
1
1
BG
= 13 V
IG
OUTPUT
= 5 V
1
0
1
0
0
0
0
0
0
0
MIN.
MIN.
100
150
40
9
3
6
-
-
-
-
THRESHOLD
TYP.
TYP.
10.5
350
175
100
0.7
0.1
45
4
7
5
Product specification
BUK205-50Y
MAX.
MAX.
600
0.8
12
50
5
8
1
-
-
-
Rev 1.000
UNIT
UNIT
mA
mA
k
˚C
V
V
V
V
V
A