TA8006ASN 데이터 시트보기 (PDF) - Toshiba
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TA8006ASN Datasheet PDF : 10 Pages
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PIN DESCRIPTION
TA8006ASN
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
SYMBOL
DESCRIPTION
BIAS
IS
OUT
COMP
VCC
GND
ST
WI
RESET
RESET
TC
CK
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 a 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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