TA8006SN Ver la hoja de datos (PDF) - Toshiba
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TA8006SN Datasheet PDF : 10 Pages
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PIN DESCRIPTION
TA8006SN
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
SYMBOL
BIAS
IS
OUT
COMP
VCC
GND
ST
WI
RESET
RESET
TC
CK
DESCRIPTION
Power supply pin for the current limiter, the over-voltage detector, the startup circuit which turns
on 5V power.
Detection pin for the current limiter. The voltage drop across external detection resistor RS
between pins 1 and 2 is monitored.
A voltage exceeding 0.3V activates the current limiter.
Example : If the load current 300mA, the value of RS is 0.3V / 300mA = 1Ω
Connected to the base of an external PNP transistor so that the output voltage is stabilized.
Power supply design suitable for particular load capacities is thus possible.
Since the recommended maximum IOUT is 5mA, an output current of 300mA is assured if the
external transistor has an hFE of 60 or more.
Phase compensation pin for output stabilization.
Power supply pin for the power supply and the reset timer. The output voltage VREG is also
detected.
Grounded.
Standby mode setup pin. When the signal is low, the system is in standby mode in which the
reset timer is off and the power current is limited to 0.7mA or less. When the signal is high, the
system is in active mode in which the power supply and reset timer are active.
Reset detect voltage VTH1 output pin. The reset detect voltage has a hysteresis of 0.2V. It is
the output from the collector of an NPN transistor with 2 pull-up resistor.
Watchdog timer reset pin.
- Generates a reset signal which is determined by the CR combination of the TC pin.
- Intermittently generates reset pulses if no clock is supplied to the CK pin.
The RESET signal is the output from the collector of an NPN transistor with a pull-up resistor.
Output pin of the inversion of pin 9 ( RESET ). It is the open-collector output of an NPN
transistor.
Pin for setting a time for the reset timer and watchdog timer.
It connects to a resistor RT which leads to VCC and a capacitor CT which is grounded.
Clock input pin for the watchdog timer. If it is used for a power-on reset timer only, it is pulled up
to VCC.
2
2002-02-27
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