High-side Power Switch ICs
[With Diagnostic Function, Surface-mount 2-circuits]
SDH04
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 protection circuits
Built-in protection against reverse connection of power supply
Tj = 150ºC guaranteed
Surface-mount full-mold package
External Dimensions
(unit: mm)
1.0
±0.3
0.25
0.89
±0.15
2.54
±0.25
0.75
–0.05
+0.15
SMD-16A
16
9.8
±0.3
6.8max
3.0
±0.2
6.3
±0.2
8.0
±0.5
9
a
b
Pin 1
20.0max
19.56
±0.2
8
0 to 0.15
0.3
–0.05
+0.15
Absolute Maximum Ratings
Parameter
Power supply voltage
Drive terminal applied voltage
Input terminal voltage
DIAG output applied voltage
DIAG output source current
Voltage across power supply
and drive terminal
Output current
Power dissipation
Junction temperature
Operating temperature
Storage temperature
Symbol
V
B
V
D
V
IN
V
DIAG
I
DIAG
V
B–D
I
O
P
D
Tj
T
OP
Tstg
Ratings
–13 to +40
–0.3 to V
B
–0.3 to +7.0
–0.3 to +7.0
3
V
B
–0.4
1.5
2.6
–40 to +150
–40 to +100
–40 to +150
Unit
V
V
V
V
mA
V
A
W
ºC
ºC
ºC
Conditions
(Ta=25ºC)
4.0max
3.6
±0.2
1.4
±0.2
a: Part No.
b: Lot No.
Equivalent Circuit Diagram
Without heatsink, all circuits operating
The MIC is bound by the dotted lines.
9,12,16
V
B
2
*
Pre. Reg.
IN1
DIAG1
2
3
DIAG DET.
CONT.
11kΩ typ.
O.C.P
Drive
1,15
T.S.D
14
Electrical Characteristics
Ratings
Parameter
Operating power supply voltage
Quiescent circuit current
Threshold input voltage
Hi output
Input current
Lo output
Saturation voltage of output
transistor
Output terminal sink current
Saturation voltage of DIAG output
Leak current of DIAG output
Open load detection resistor
Overcurrent protection starting
current
Output transfer time
T
OFF
T
PLH
DIAG output transfer time
T
PHL
15
30
15
10
30
30
I
IN
V
CE (sat)
I
O (off)
V
DL
I
DGH
Ropen
I
S
T
ON
1
1.6
8
30
0
100
0.5
2.0
0.3
100
30
Symbol
V
Bopr
Iq
V
IN
th
I
IN
0.8
min
6.0
5
typ
max
16
12
3.0
1.0
Out1
2
*
(V
Bopr
=14V, Ta=25ºC unless otherwise specified)
D1
1
*
Unit
V
Conditions
IN2
DIAG2
7
6
DIAG DET.
CONT.
11kΩ typ.
O.C.P
Drive
mA
V
mA
µA
V
mA
V
µA
kΩ
A
µs
µs
µs
µs
Lo output
8,10
11
4,5,13
Out2
*
2
D2
1
*
V
IN
= 5V
V
IN
= 0V
I
O
1.0A, V
Bopr
= 6 to 16V
V
O
= 0V, V
IN
= 0V
I
DIAG
= 3mA
V
DIAG
= 5V
[Abbreviations]
Drive: Drive circuit
CONT: ON/OFF circuit
Pre.Reg: Pre-regulator
GND
*
2
DIAG.DET.: Diagnostic circuit
O.C.P.: Overcurrent protection
T.S.D.: Thermal protection
*1. The base terminal (D terminal) is connected to the output
transistor base. It is also connected to the control monolithic
IC. Do not, therefore, apply an external voltage in operation.
*2. SDH04 have two or three terminals of the same function (
V
B
,
Out1, Out 2
, GND). The terminals of the same function must be
shorted at a pattern near the product.
V
O
= V
Bopr
–1.9V
I
O
= 1A
I
O
= 1A
I
O
= 1A
I
O
= 1A
Standard Circuit Diagram
V
B
PZ
D
1
Out
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).
SDH04
V
CC
DIAG
5.1kΩ
Diagnostic Function
GND
V
B
3.0V
IN
GND
V
IN
0.8V
Truth table
V
IN
V
O
H
SHORT
Is
OPEN OPEN
OVER
VOLTAGE
Load
GND
H
L
L
TSD
GND
V
OUT
I
O
Note 1: A pull-down resistor (11 kΩ typ.) is connected to the IN terminal.
V
OUT
turns "L" when a high impedance is connected to the IN terminal in
series.
GND V
DIAG
Normal
Shorted load
Open load
Overvoltage
Overheat
ERROR SIGNAL for CPU
24
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