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TA8020S

Toshiba
Part Number TA8020S
Manufacturer Toshiba
Description DUAL VOLTAGE SENSOR
Published Jun 16, 2005
Detailed Description TA8020S TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA8020S DUAL VOLTAGE SENSOR The TA8020S is an IC d...
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TA8020S
TA8020S

Overview
TA8020S TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA8020S DUAL VOLTAGE SENSOR The TA8020S is an IC designed for lamp failure detection.
When a lamp failure occurs, it detects the resulting lamp current change from the voltage across the detection resistor RS.
It has a reference voltage characterized by high accuracy and small temperature drift as well as a voltage comparator.
It is also designed to compensate for lamp current changes due to supply voltage variations.
It consists of two circuits which are supplied with power from separate pins.
FEATURES l Two circuits served by separate power supplies Weight: 0.
92 g (typ.
) l High-performance input amplifier incorporated l Reference voltage characterized by small temperature drift l Built-in circuit which compensates for lamp voltage characteristic variations l Operating temperature range : from −40 to 85°C l Plastic SIP-9 pin BLOCK DIAGRAM AND PIN LAYOUT 1 2002-02-27 PIN DESCRIPTION TA8020S PIN No.
1, 9 2, 8 3, 7 4, 6 5 SYMBOL VCC2 VCC1 IN OUT GND DESCRIPTION Power supply pin dedicated to the output transistor.
Since it is connected to VCC1 outside the IC, influence of output on / off on the detection voltage is low so that accurate detection is assured.
Power supply pin for the IC.
High accuracy is assured under the condition of VCC = 8 to 16V.
Detection pin which leads to a differential input circuit consisting of a PNP transistor.
The detected voltage is amplified ten times within the IC.
The resulting voltage is fed to the differential-input PNP-transistor comparator.
Push-pull output pin which connects to an NPN transistor.
When a lamp failure is detected, this signal goes high to flow out a current for driving the external output circuit.
Grounded (Note: Operation mode) Input Voltage Output Mode VIN > VTH VIN < VTH LOW HIGH 2 2002-02-27 MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC Supply Voltage Power Dissipation Output Current Input Voltage Operating Temperature Storag...


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