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PDF TA8063F Data sheet ( Hoja de datos )
| Número de pieza | TA8063F | |
| Descripción | 4CH HIGH SIDE DRIVER | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TA8063F
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8063F
4CH HIGH SIDE DRIVER
TA8063F is built into for 0.5A High-side driver ICs which drive
lamp, relay, and solenoid actuators. Inputs from DI1, DI2, DI3,
and DI4 switch ON and OFF modes. Inputs are TTL-compatible,
thus the device can also be directly controlled from a CPU or
other control system. The device is equipped with low-standby
(with all outputs off), self-diagnosis, and protection functions.
FEATURES
l 0.5A high-side driver.
l Four built-in circuits (power supply, self-diagnosis, and
protection functions for each circuit)
l Low standby current 0.1mA (Max.)
l Self-diagnosis output
Short : 1A (Typ.)
DＧ1 : OR output of OUT1 & OUT2
DＧ2 : OR output of OUT3 & OUT4
l Recommended operating supply voltage range: VCC = 8 V to 16 V
l Multiple protection functions
Short, thermal, and overvoltage protection functions
l Built-in diodes for absorbing counter electromotive force
l HSOP-20 pin power flat package
Weight: 0.79 g (typ.)
1 2002-02-27
1 page  
TA8063F
3. Overcurrent protection (ISD)
· Outline
When the output current is less than the ISD detection current, output is controlled by input signals. When
the output current is greater than the detection current, output changes to switching waveform as in Figure
1.
Figure1 Switching Waveforms
· Operation
The output current is detected by monitoring the sense resistance. Detection circuits are connected to the
self-diagnosis output pins ( DG1 and DG2 ), then further connected to the short circuit protection circuits.
When current exceeding the ISD detection current flows to one of the two channels of self-diagnosis output,
the corresponding short circuit protection circuit is activated. The short circuit protection circuit is built into
the timer. If overcurrent mode continues 10μs (Typ.), the circuit changes the output to high impedance mode,
then returns to on mode after 290μs (Typ.). The above switching waveform is output repeatedly as long as
the circuit is in overcurrent mode.
· Caution for application
The overcurrent protection is used to protect the IC from instantaneous destruction due to short circuits. If
overcurrent continues, configure a system which changes the IC to standby mode using the self diagnosis
signal.
Note that the time required for switching the IC from output short (overcurrent detection) to standby must
be 1s or less.
5 2002-02-27
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet TA8063F.PDF ] | |
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