High-side Power Switch ICs
[With Diagnostic Function]
SI-5151S
Features
Built-in diagnostic function to detect short and open circuiting of loads and
output status signals
Low saturation PNP transistor use
Allows direct driving using LS-TTL and C-MOS logic levels
Built-in overcurrent and thermal protection circuits
Built-in protection against reverse connection of power supply
TO220 equivalent full-mold package not require insulation mica
External Dimensions
(unit: mm)
3.2
±0.2
10
±0.2
4.2
±0.2
2.8
±0.2
4
±0.2
7.9
±0.2
16.9
±0.3
2.6
±0.1
a
2.9
–0.3
+0.2
b
Absolute Maximum Ratings
Parameter
Power supply voltage
Input terminal voltage
DIAG terminal voltage
Collector-emitter voltage
Output current
Symbol
V
B
V
IN
V
DIAG
V
CE
I
O
P
D1
Power Dissipation
P
D2
Junction temperature
Operating temperature
Storage temperature
Tj
T
OP
Tstg
1.5
–40 to +125
–40 to +100
–40 to +125
W
ºC
ºC
ºC
Ratings
40
–0.3 to V
B
6
40
1.8
18
Unit
V
V
V
V
A
W
Conditions
(Ta=25ºC)
0.94
±0.15
R-end
0.85
–0.1
P1.7
±0.1
+0.2
0.45
–0.1
• 4 = 6.8
4
±0.6
With infinite heatsink (Tc = 25ºC)
Stand-alone without heatsink
(Tc = 25ºC)
1. GND
2. V
IN
3. V
O
4. DIAG
5. V
B
a: Part No.
b: Lot No.
(Forming No. 1123)
Standard Circuit Diagram
V
B
5
Electrical Characteristics
Parameter
Operating power supply voltage
Quiescent circuit current
Saturation voltage of output
transistor
Output leak current
Output ON
Input voltage
Output OFF
Output ON
Input current
Output OFF
Overcurrent protection starting
current
Thermal protection starting
temperature
Open load detection resistor
Output transfer time
T
OFF
V
DH
DIAG output voltage
V
DL
T
PLH
DIAG output transfer time
T
PHL
Minimum load inductance
L
1
30
0.3
30
V
µs
µs
mH
4.5
15
30
6
I
IL
I
S
–0.1
1.9
mA
A
V
IL
I
IH
–0.3
0.8
1
V
mA
Symbol
V
Bopr
Iq
V
CE (sat)
1.0
I
O
, leak
V
IH
2.0
2
V
B
V
mA
V
Ratings
min
6.0
5
typ
max
30
12
0.5
Unit
V
mA
V
(Ta=25ºC unless otherwise specified)
V
O
PZ
V
CC
Conditions
V
IN
2
LS-TTL
or
CMOS
SI-5151S
3
DIAG
4
5.1kΩ
V
Bopr
= 14V, V
IN
= 0V
I
O
1.0A, V
Bopr
= 6 to 16V
I
O
1.8A, V
Bopr
= 6 to 16V
V
CEO
= 16V
V
Bopr
= 6 to 16V
V
Bopr
= 6 to 16V
V
IN
= 5V
V
IN
= 0V
V
Bopr
= 14V, V
O
= V
Bopr
–1.5V
Load
1
Truth table
V
IN
V
O
H
L
H
L
GND
Diagnostic Function
T
TSD
Ropen
T
ON
8
125
145
30
30
ºC
kΩ
µs
µs
V
V
Bopr
= 6 to 16V
V
Bopr
= 14V, I
O
= 1A
V
Bopr
= 14V, I
O
= 1A
V
CC
= 6V
V
CC
= 6V, I
DD
= 2mA
V
Bopr
= 14V, I
O
= 1A
V
Bopr
= 14V, I
O
= 1A
Normal
Open load
Shorted load
Overheat
Normal
V
IN
V
O
DIAG
Note:
* The rule of protection against reverse connection of power supply is V
B
= –13V, one minute
(all terminals except, V
B
and GND, are open).
V
O
V
IN
DIAG
L
L
L
Normal
H
H
H
L
H
H
Open load
H
H
H
L
L
L
Shorted load
H
L
L
L
L
L
Overheat
H
L
L
DIAG output will be undetermined when a voltage
exceeding 25V is applied to V
B
terminal.
Mode
26
3.6
±0.5
+0.2
20 max
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