TDE1798 Fast Delivery |IC PHOENIX CO.,LIMITED

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TDE1798
0.5A INTELLIGENT POWER SWITCH
TDE1798
0.5A INTELLIGENT POWER SWITCH
HIGH OUTPUT CURRENT 500mA
SHORT-CIRCUIT PROTECTION UP TO
VCC= +35V
INTERNAL THERMAL PROTECTION WITH
EXTERNAL RESET AND SYNCRONIZATION
CAPABILITY
OPEN GROUND PROTECTION
OUTPUT VOLTAGE CAN BE LOWER THAN
GROUND FOR FAST INDUCTIVE LOAD DE-
MAGNETIZATION
DIFFERENTIAL INPUTS FOR ANY LOGIC
SYSTEM COMPATIBILITY
INPUT VOLTAGE CAN BE HIGHERTHAN VCC
LARGE SUPPLY VOLTAGE RANGE FROM TO 35V
SINK AND SOURCE ALARM OUTPUTS NEED FOR EXTERNAL CLAMPING DI-
ODE FOR DEMAGNETIZATION ENERGY UP 150mJ
SEVERAL DEVICES CAN BE CONNECTED PARALLEL
DESCRIPTION
The TDE1798is an interface circuit delivering
high currents and capableof driving any typeof
loads.
The outputis protected from short-circuits with
the positive supplyor ground.In addition thermal
shut downis providedto keep theIC from over-
heating.If internal dissipation becomes too high,
the driver will shut downto prevent excessive
heating. The output stays null after the overloadis
off,if the reset inputis low.If high, the output will
alternatively switchon andoff until the overloadis
removed.
Higher current canbe obtainedby paralleling the
outputsof several devices.In this case, the de-
vices can be reactivated simultaneously after an
overloadif their reset input are connectedin par-
allel.
The device operates overa wide rangeof supply
voltages from standard ±15 operational amplifier
suppliesto the single ±6Vor +35V usedfor indus-
trial electronic systems. Input voltage can be
higher than the VCC. The outputis lowin open
ground conditions.
PIN CONNECTION (Top view)
Minidip
ORDERING NUMBER: TDE1798DP
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Test Conditions Unit
VCC Supply Voltage 50 V
VID Input Differential Voltage 50 V Input Voltage -30to +50 V
VI(reset) Reset Input Voltage VCC -50to VCC V Output Current internallylimited A
Ptot Power Dissipation Internally Limited mW
Reset Input SinkCurrent(in thermal shut-down) 15 mA Repetitive Maximum Demagnetization Energy-106 Operations 150 mJ
Top Operating Ambient Temperature Range -25to-85 °C
Tstg Storage Temperature Range -65to +150 °C
IA(sink) Alarm Output Sink Current 25 mA
IA(source) Alarm Output Source Current 12 mA
TDE1798
THERMAL DATA
Symbol Description Value Unit
Rthj-case
Rth j-ambient
Thermal Resistance Junction-case(1)
Thermal Resistance Junction-ambient(1)
max.
max.
°C/W
°C/W Devices boundedona 40cm2 glass-epoxy printed circuit 0.15cm thick with 4cm2of copper
ELECTRICAL CHARACTERISTICS (note2)
TDE -25°C≤Tj≤ +85°C, 6V≤ VCC≤ +35V,Io≤ 500mA (unless otherwise specified).
Symbol Parameter TestCondition Min. Typ. Max. Unit
VIO Input Offset Voltage (note3) – 2 50 mV
ICC Power Supply Current Output High (Tamb= +25°C,= 500mA)
Output Low
IIB Input Bias Current – 15 40 μA
VICR Common-mode Input Voltage
Range
(note4) 1 – 45 V Input Voltage Range Vref> +1V, (note4 and5) -25 – 45 V
ISC Short-circuit Output Current VCC= 30V,t= 10ms 0.7 0.9 1.3 A
VCC -VO Output Saturation Voltage IO= 500mA (|V+I-V-I|> 50mV) – 1 1.25 V
IOL Output Low Leakage Current Tj= +85°C(VCC= 30V,VO= 0V) – 10 100 μA
I(pin 1)source
I(pin6)sink
Available Alarm Output Current Source (V(pin1) =VCC- 2.5V)
Sink(in thermal shut-down)
V(pin6) =2V
IRH
IRL
Reset Input Current –
Vth Reset Threshold 0.8 1.4 2 V
Ireset Reset Output Sink Current (in thermal shut-down)for
Vreset≤ +0.8V
2–– mA
IOL(open GND) Output Leakage Current (open ground) – 10 100 μA
VBRVEO Output Transistor Avalanche Volt. VCC -VO 65 – 110 V
Notes: Foroperating athigh temperature,the TDE1798 mustbederated basedon a150°Cmaximum junction temperature andthe junction-ambient
thermal resistance. The offset voltage given isthe maximum valueof input differential voltage requiredto drivethe outputvoltage within2V ofthegroundorthe
supply voltage; Input voltage rangeis independentofthe supply voltage; The referenceinputcanbethe invertingorthe non-inverting one.
TDE1798
TDE1798
TYPICAL APPLICATION AUTOMATIC RESET TYPICAL APPLICATIONCONTROLLED RESET
(*)D1 andZ1 neededifthe demagnet ization energyis higher than 150mJ
SHORT CIRCUIT CONDITIONS WITH AUTOMATIC RESET
TDE1798
= V(BR)L [Io− V(BR)− VCC Log(1+ VCCV(BR)− VCC)]
SHORT CIRCUIT CONDITIONS WITH CONTROLLED RESET
DEMAGNETIZATION OF INDUCTIVE LOADS
WITHOUT EXTERNAL CLAMPING DEVICES.
With no external clamping device, the energyof
demagnetizationis dissipatedin the TDE1798
output stage, and the clamping voltageis the col-
lector -emitter breakdown voltage V(BR)CEO.
This method providesa very fast demagnetization inductive loads and canbe usedupto 150 mJ.
The amountof energyW dissipatedin the output
stage duringa demagnetizationis:
Remark1: This energyis dissipated inside the
case, then mustbe includedin the whole power
dissipation.
loads. The dispersion of the collector-emitter
breakdown voltage V(BR) would induce the circuit
with the lowest V(BR)to dissipate the whole de-
TDE1798
1 AMP. DRIVER (reset maybe either automaticor controlled)ALARM OUTPUT SINK ALARM OUTPUT SOURCE
TDE1798

Partno	Mfg	Dc	Qty	Available	Descript
TDE1798		N/a	230	avai	0.5A INTELLIGENT POWER SWITCH