intelligent power switch

intelligent power switch
®
TDE1707BFP
INTELLIGENT POWER SWITCH
PRODUCT PREVIEW
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 VS 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 VS (Low side Mode)
Especially dedicated to proximity detectors, its inBLOCK DIAGRAM
September 2003
SO8
ORDERING NUMBER: TDE1707BFP
ternal +5V supply can be used to supply external
circuits (See also AN495/0692). A signal is internally generated to block the In signal, and prevent
activation of the output switch, as long as an abnormal condition is detected. The power-on transition, as well as the chip overtemperature and
the output overcurrent, concurr to the generation
of such signal. A minimum delay of 25µs (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 disapperance 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.
1/6
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
TDE1707BFP
PIN CONNECTION (Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
VSr
IO
Vreg
Vdelay
Parameter
Supply Voltage
Supply Reverse Voltage
Output Current
Regulated Voltage Pin
Delay Cap. Surce Pin
VO
Vi
Output Diff. Voltage
Input Voltage
Value
50
Unit
V
50
internally limited
V
A
0 to 7
0 to 5
V
V
55
-10 to 50
V
V
Top
Operating Temperature Range
-25 to +85
°C
Tstg
Ptot
Storage Temperature
Power Dissipation
-55 to 150
internally limited
°C
W
El
Energy Induct. Load
150
mJ
THERMAL DATA
Symbol
Rth j-amb
2/6
Description
Thermal Resistance Junction-ambient
Max.
Value
Unit
150
°C/W
TDE1707BFP
ELECTRICAL CHARACTERISTICS (VS = 24V; Tj = –25 to +85°C, unless otherwise specified)
Symbol
Parameter
Test Condition
Supply Voltage
Min.
Typ.
6
Max.
Unit
Vs 7
Isr 7
48
V
Supply Reverse Current
VSR = –48V
1.5
mA
Iq 7
Quiescent Current
Ireg = Iled = 0; Vi < 2V;
VS = 6 to 48V
1.5
mA
Io 8/2
Output Current
Vs = 6V to 32V
500
mA
Io 8/2
Vsat 8/2
Output Current
Vs = 32V to 48V
300
mA
Output Voltage Drop V8-2
Io = 500mA
1.6
V
Vsat 8/2
Output Voltage Drop V8-2
Io = 300mA
1.5
V
Isc 8/2
Vcl 8/2
Short Circuit Current
Internal Voltage Clamp
1.5
70
A
V
Iolk 8/2
Output Leakage
300
100
µA
µA
1.1
0.7
55
ICL = 10mA
0
(Pin 2)
Vi < 2V; Vo = 0 to Vs (Pin 8)
Vith 5
Input Voltage Threshold
Vihis 5
Ilk 5
Input Threshold Hysteresis
Input Current
Vi = 5V
Vreg 6
Iscr 6
Regulated Output Voltage
Short Circuit Regulated
Ireg < 5mA
Ireg 6
Ouput Regulator Current
Vs = 35V
Vs = 48V
2
3
300
4.5
6
Iold 1
Current Surce Sink Led Driver
Output ON (±)
Vold 1
Voltage Drop Led Driver
Ios = 2mA (±)
Lead Driver (off) Leak.
Del. Cap. Charge Current
Delay Voltage Trigger
Vi < 2V; RL < 1KΩ
TJ = 25°C
TJ = 25°C
Oldlk 1
Idch 3
Vdth 3
100
APPLICATION INFORMATION (See Application
Circuit)
The LED driver tells the output status.
It can source or sink current (Iold typ = 3mA), according to the output configuration chosen.
The thresholds, represented by the output comparator in the Block Diagram, are set at about
1.5V - 2V.
For instance, in the High Side Load case of the
2
2
V
mV
2
5
µA
5
30
5.5
50
V
mA
3
6
4
4
mA
mA
mA
1.2
1.6
V
10
µA
6
µA
V
4
4
Application Circuit, when the voltage on pin 8 (the
output) differs from VCC less than 1.5V, the output
is sensed in "OFF" state and the LED driver is
disabled.
If instead pin 8 differs from VCC 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.
DYNAMIC CHARACTERISTICS (VS = 24V; RL = 48Ω; TJ = 25°C)
ton
Propagation Turn on Time
Vi = 0 to 5V
15
toff
tdon
Propagation Turn off Time
Delayed Turn on Time / nF
Delay Capacitor
Vi = 5 to 0V
15
1
td min
Minimum Delayed ton
Delay Capacitor = 0
0.65
25
µs
2
µs
ms
µs
3/6
TDE1707BFP
APPLICATION CIRCUIT
Figure 1: Input Thresholds Voltage vs.
Temperature (VS = 24V)
Figure 2: Saturation Voltage vs. Temperature
(VS = 24V; IO = 500mA)
Figure 3: Quiescent Current) vs.Temperature
(VS = 24V)
4/6
TDE1707BFP
mm
DIM.
MIN.
TYP.
A
a1
inch
MAX.
MIN.
TYP.
1.75
0.1
0.25
a2
MAX.
0.069
0.004
0.010
1.65
0.065
a3
0.65
0.85
0.026
0.033
b
0.35
0.48
0.014
0.019
b1
0.19
0.25
0.007
0.010
C
0.25
0.5
0.010
0.020
c1
45° (typ.)
D (1)
4.8
5.0
0.189
0.197
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
3.81
0.150
F (1)
3.8
4.0
0.15
0.157
L
0.4
1.27
0.016
0.050
M
S
OUTLINE AND
MECHANICAL DATA
0.6
0.024
SO8
8 ° (max.)
(1) D and F do not include mold flash or protrusions. Mold flash or
potrusions shall not exceed 0.15mm (.006inch).
5/6
TDE1707BFP
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
© 2003 STMicroelectronics - All rights reserved
STMicroelectronics GROUP OF COMPANIES
Australia – Belgium - Brazil - Canada - China – Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States
www.st.com
6/6
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising