TDE1707BFP
INTELLIGENT POWER SWITCH
PRODUCT PREVIEW
0.5A OUTPUT CURRENT
LOW SIDE OR HIGH SIDE SWITCH CON-
FIGURATION
6V TO 48V SUPPLY VOLTAGE RANGE
OVERLOAD AND SHORT CIRCUIT PROTEC-
TIONS
INTERNAL VOLTAGE CLAMPING
SUPPLY AND OUTPUT REVERSAL PRO-
TECTION
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 TDE1707BFP 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 V
S
(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 overtemperature and
the output overcurrent, concurr to the generation
of such signal. A minimum delay of 25
s (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 dis-
apperance of the block signal; no delay at its on
set) can be further increased connecting a ca-
pacitor between pin3 and ground. It can drive re-
sistive or inductive loads.
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
July 1999
SO8
ORDERING NUMBER: TDE1707BFP
BLOCK DIAGRAM
1/6
PIN CONNECTION (Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
50
V
V
Sr
Supply Reverse Voltage
50
V
I
O
Output Current
internally limited
A
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
op
Operating Temperature Range
-25 to +85
C
T
stg
Storage Temperature
-55 to 150
C
P
tot
Power Dissipation
internally limited
W
E
l
Energy Induct. Load
150
mJ
THERMAL DATA
Symbol
Description
Value
Unit
R
th j-amb
Thermal Resistance Junction-ambient
Max.
150
C/W
TDE1707BFP
2/6
ELECTRICAL CHARACTERISTICS (V
S
= 24V; T
j
= 25 to +85C, unless otherwise specified)
Symbol
Parameter
Test Condition
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
I
o
8/2
Output Current
Vs = 32V to 48V
300
mA
V
sat
8/2
Output Voltage Drop V
8-2
I
o
= 500mA
1.1
1.6
V
V
sat
8/2
Output Voltage Drop V8-2
Io = 300mA
1.5
V
I
sc
8/2
Short Circuit Current
0.7
1.5
A
V
cl
8/2
Internal Voltage Clamp
I
CL
= 10mA
55
70
V
I
olk
8/2
Output Leakage
0
(Pin 2)
V
i
< 2V; V
o
= 0 to V
s
(Pin 8)
100
300
100
A
A
V
ith
5
Input Voltage Threshold
2
3
V
V
ihis
5
Input Threshold Hysteresis
300
mV
I
lk
5
Input Current
V
i
= 5V
2
5
A
V
reg
6
Regulated Output Voltage
I
reg
< 5mA
4.5
5
5.5
V
I
scr
6
Short Circuit Regulated
6
30
50
mA
I
reg
6
Ouput Regulator Current
V
s
= 35V
V
s
= 48V
6
4
mA
mA
I
old
1
Current Surce Sink Led Driver
Output ON (
)
2
3
4
mA
V
old
1
Voltage Drop Led Driver
I
os
= 2mA (
)
1.2
1.6
V
Oldlk 1
Lead Driver (off) Leak.
V
i
< 2V; R
L
< 1K
10
A
I
dch
3
Del. Cap. Charge Current
T
J
= 25
C
2
4
6
A
V
dth
3
Delay Voltage Trigger
T
J
= 25
C
4
V
DYNAMIC CHARACTERISTICS (V
S
= 24V; R
L
= 48
; T
J
= 25
C)
t
on
Propagation Turn on Time
V
i
= 0 to 5V
15
s
t
off
Propagation Turn off Time
V
i
= 5 to 0V
15
s
t
don
Delayed Turn on Time / nF
Delay Capacitor
0.65
1
2
ms
t
d min
Minimum Delayed t
on
Delay Capacitor = 0
25
s
APPLICATION INFORMATION (See Application
Circuit)
The LED driver tells the output status.
It can source or sink current (I
old typ
= 3mA), ac-
cording to the output configuration chosen.
The thresholds, represented by the output com-
parator in the Block Diagram, are set at about
1.5V - 2V.
For instance, in the High Side Load case of the
Application Circuit, when the voltage on pin 8 (the
output) differs from V
CC
less than 1.5V, the output
is sensed in "OFF" state and the LED driver is
disabled.
If instead pin 8 differs from V
CC
more than 3V (the
output comparator threshold value plus the drop
voltage on the LED), then the output is sensed
"ON" and the driver will force the current on the
LED.
TDE1707BFP
3/6
APPLICATION CIRCUIT
Figure 1: Input Thresholds Voltage vs.
Temperature (V
S
= 24V)
Figure 2: Saturation Voltage vs. Temperature
(V
S
= 24V; I
O
= 500mA)
Figure 3: Quiescent Current) vs.Temperature
(V
S
= 24V)
TDE1707BFP
4/6
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