April 2006
Rev 1
1/13
13
TDE1707DF
Intelligent power switch
Features
0.5A Output current
Low side or high side switch configuration
6V to 48V supply voltage range
Overload and short circuit protections
Internal voltage clamping
Supply and output reversal protection
Thermal shutdown
GND and V
S
open wire protection
Adjustable delay at switch on
Indicator status LED driver
+5V regulated AUX. voltage
High burst immunity
Description
The TDE1707DF is a 0.5A Integrated Power
Switch with up to 48V Power supply capability.
Two output configurations are possible:
Load to Gnd. (High Side Mode)
Load to VS (Low side Mode)
Especially dedicated to proximity detectors, its in-
ternal +5V supply can be used to supply external
circuits (See also AN495/0692). A signal is inter-
nally generated to block the In signal, and prevent
activation of the output switch, as long as an ab-
normal condition is detected. The power-on tran-
sition, as well as the chip over temperature and
the output overcurrent, concur to the generation of
such signal. A minimum delay of 25ms
(Typ.value) is added to the trailing edge of such
signal to ensure that a stable normal situation is
present when the signal disappears. The delay (of
the disappearance of the block signal; no delay at
its on set) can be further increased connecting a
capacitor between pin3 and ground. It can drive
resistive or inductive loads..
Order codes
DFN (4x4)
Part number
Temp range,
C
Package
Packing
TDE1707DF
-25C to +85C
DFN(4x4)
Tube
TDE1707DFT
-25C to +85C
DFN(4x4)
Tape & Reel
www.st.com
Contents
TDE1707DF
2/13
Contents
1
Block & Pin connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4
Dynamic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1
Adjustable input hysteresis circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1
Foot Print Recommended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2
DFN (4x4) Mechanical Data & Package Dimensions . . . . . . . . . . . . . . . . . . .11
5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TDE1707DF
Block & Pin connection diagrams
3/13
1
Block & Pin connection diagrams
Figure 1.
Block diagram
Block & Pin connection diagrams
TDE1707DF
4/13
Table 1.
Pin Functions
Note:
Lead frame can be connected to ground.
Figure 2.
Pin connection diagram (top view)
Pin No
Function
1
Led Driver
2
High Side Output
3
Delay Capacitance Source
4
Ground
5
Input
6
Reg. Voltage Source
7
Supply Voltage
8
Low Side Output
TDE1707DF
Electrical specifications
5/13
2 Electrical
specifications
2.1 Thermal
data
Table 2.
Thermal data
2.2 Absolute
maximum
ratings
Table 3.
Absolute maximum ratings
2.3 Electrical
characteristics
Symbol
Description
Value
Unit
R
thJA
Thermal Resistance Junction-ambient
Max.
32
(1)
1.
Soldered to a 4 layer board with 4 vias in the pad.
C/W
R
thJC
Thermal Resistance Junction-case
Max.
1.2
C/W
Symbol Parameter
Value
Unit
V
S
Supply Voltage
50
V
V
S
Supply Reverse Voltage
50
V
I
o
Output Current
internally limited
V
reg
Regulated Voltage Pin
0 to 7
V
V
delay
Delay Cap. Surce Pin
0 to 5
V
V
o
Output Diff. Voltage
55
V
V
i
Input Voltage
-10 to 50
V
T
j
Operating Temperature Range
-25 to 85
C
T
stg
Storage Temperature Range
-55 to 150
C
P
tot
Power Dissipation
internally limited
mW
E
i
Energy Induct. Load
100
mJ
Table 4.
Electrical Characteristcs
(V
S
= 24V ; T
J
= - 25 to +85C unless otherwise specified).
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
V
s
7
Supply Voltage
6
48
V
I
sr
7
Supply Reverse Current
V
SR
= 48V
1.5
mA
I
q
7
Quiescent Current
I
reg
= I
led
= 0; V
i
< 2V;
V
S
= 6 to 48V
1.5
mA
I
o
8/2
Output Current
V
s
= 6V to 32V
500
mA
V
s
= 32V to 48V
300
mA
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