TA7900S/F
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA7900S,TA7900F
5V Voltage Regulator with Watchdog Timer
The TA7900S, TA7900F is an IC specially designed for
micro-computer systems. It produces an output voltage of
5±0.25V without need for adjustment from its accurate reference
voltage and amplifier circuit.
At power-on, it outputs a reset signal to reset the system. It will
also output a reset signal when the 5V output voltage drops
below 92% because of external disturbance or other problem. It
also incorporates a watchdog timer for self-diagnosing the system.
When the system malfunctions, the IC generates reset pulses
intermittently to prevent the system from running away.
Features
l Accurate output
TA7900S
TA7900F
: 5±0.25V
l Output voltage adjusting pin attached
l Power-on reset timer incorporated
l Watchdog timer incorporated
l Operating temperature range
: from −40 to 85°C
l Wide operating voltage range
: 40V (max.)
l SIP-9 pin (TA7900S)
l SOP-14 pin (TA7900F)
Weight
SIP9-P-2.54A
: 0.92 g (typ.)
SOP14-P-225-1.27 : 0.20 g (typ.)
1
2002-02-27
