TA8007 查看數據表（PDF） - Toshiba
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TA8007 Datasheet PDF : 9 Pages
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Pin Description
TA8007AS
PIN No.
1
2
3
4
5
6
7
8
9
SYMBOL
BIAS
OUT
COMP
VCC
GND
M
RESET
TC
CK
DESCRIPTION
Power supply pin for the start-up circuit which activates the overvoltage detection circuit and the
5V power supply.
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 section and reset timers. The output voltage VREG can
also be detected at this pin.
Grounded.
NPN transistor open-collector output
This signal is low while pulses come from pin 7 ( RESET output) ; it becomes high when pulses
no longer come from pin 7. This function can be used for monitoring the operation of the
microcomputer system.
NPN transistor open-collector output.
(1) The signal goes low when the output voltage drops below 88%.
(2) The pin supplies a reset signal determined by the CR combination connected to the TC pin.
(3) The pin supplies reset pulses intermittently if no clock is given to the CK pin.
Time setting pin for the reset and watchdog timers. The resistor RT leads to VCC, and the
capacitor CT leads to GND.
Input pin for watchdog timer. The pin is pulled up to VCC if the IC is used only as a power-on
reset timer.
2
2003-01-17
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