8178

Pinout




Specifications

Input Voltage, V_I . . . . . . . . . . . . . .  .30 V
Reverse Input Voltage, V_RI . . . .   .-120 V
Output Current, I_O . . . . . . . . . . . .  . TBD*
Operating Temperature Range,
      T_A . . . . . . . . . . . .  . ..-40 to +150
Junction Temperature, TJ . . . .  . ..+150
Storage Temperature Range,
     T_S . . . . . . . . . . . .  . ...-40 to +170
* Output current rating is limited by input voltage,duty cycle, and ambient temperature.  Under any set of conditions, do not exceed a junction temperature of +150  See next page.



Description

Designed specifically to meet the stringent requirements of automo- tive applications, the A8178LLR and A8178LLT provide an output voltage of 7.7 V ±15% for supply voltages greater than 6.9 V.  8178 provides a low-dropout tracking output for supply voltages down to 2.5 V.  These regulators are intended to be used with sensitive automo-
tive electronics systems that do not have the capability of low dropout operation and cannot withstand the high-voltage transients typical of automotive applications.  These 7.7 V preregulators will withstand all ISO pulses (ignition coil disconnect requires an external diode) and will continue to operate during positive power supply transients (noise).

These devices are supplied in small-outline plastic transistor packages for surface-mount applications.  The A8178LLR is supplied in the minimum footprint SOT-23/TO-236AB; the A8178LLT is furnished in the SOT-89/TO-243AA for increased allowable package power dissipa-tion.