TA8007AS

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8007AS TA8007AS 5 V Voltage Regulator with Watchdog Timer The TA8007AS is an IC specially designed for microcomputer systems. It incorporates a highly accurate constant-voltage power supply (5±0.25V) and various system reset functions. For system reset, it monitors the output voltage of VREG×88% and has a watchdog timer which can self-diagnose the microcomputer system so that program runaway can be prevented. It also has other monitor functions for checking the operation of the microcomputer system. Since its standby current is as small as 1.2mA (max), it can be connected directly to an automotive battery. Features l Accurate output l Low standby current : 5±0.25V : 1.2mA (max) Weight: 0.92g (typ.) l Power-on reset timer and watchdog timer incorporated, as well as reset and monitor outputs l Wide operating voltage range : 40V (max) l Wide operating temperature range : from −40 to 105°C l Small SIP-9pin Block Diagram and Pin Layout 1 2003-01-17 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 3...