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BUK207-50Y Datasheet, PDF (4/13 Pages) NXP Semiconductors – TOPFET high side switch SMD version of BUK203-50Y
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Philips Semiconductors
TOPFET high side switch
SMD version of BUK203-50Y
Product specification
BUK207-50Y
PROTECTION FUNCTIONS AND STATUS INDICATIONS
Truth table for normal, open-circuit load and overload conditions and abnormal supply voltages.
FUNCTIONS
TRUTH TABLE
THRESHOLD
SYMBOL CONDITION
INPUT STATUS OUTPUT MIN. TYP. MAX.
UNIT
Normal on-state
1
1
1
Normal off-state
0
1
0
IL(OC)
Open circuit load1
Open circuit load
1
0
0
1
1
30 90 150 mA
0
Tj(TO)
Over temperature2
Over temperature3
1
0
0
0
0
150 175 -
˚C
0
VBL(TO)
Short circuit load4
Short circuit load
1
0
0
1
0
9 10.5 12
V
0
VBG(TO)
VBG(LP)
Low supply voltage5
X
1
0
High supply voltage6
X
1
0
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.
3
4
5
V
40 45 50
V
STATUS CHARACTERISTICS
Tmb = 25 ˚C.
The status output is an open drain transistor, and requires an external pull-up circuit to indicate a logic high.
SYMBOL PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VSG
Status clamping voltage
IS = 100 µA; VIG = 0 V
6
7
8
V
VSG
Status low voltage
IS = 50 µA; VBG = 13 V; VIG = 5 V
-
0.7 0.8 V
IS
Status leakage current
VSG = 5 V
-
0.1
1
µA
IS
Status saturation current7
VSS = 5 V; RS = 0 Ω; VBG = 13 V
-
5
-
mA
Application information
RS
External pull-up resistor8
VSS = 5 V
- 100 -
kΩ
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
only. Typical hysteresis equals 25 mA. The thresholds are specified for supply voltage within the normal working range.
2 After cooling below the reset temperature the switch will resume normal operation. The reset temperature is lower than the trip temperature by
typically 10 ˚C.
3 If the overtemperature protection has operated, status remains low to indicate the overtemperature condition even if the input is taken low,
providing the device has not cooled below the reset temperature.
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
4
Rev 1.000
 ▷