L4946B

® L4946B QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET 4 OUTPUTS: 10V (125mA); 8.5V (250mA); 5V (200mA); 5V (100mA) 10V AND 5V (100mA) OUTPUT ARE LOW DROP 5V (100mA) ST-BY OUTPUT VOLTAGE EARLY WARNING OUTPUT FOR SUPPLY UNDERVOLTAGE (LVW) THERMAL SHUTDOWN AND CURRENT LIMITATION (FOLDBACK) REVERSE BATTERY AND LOAD DUMP PROTECTION INHIBIT (ON/OFF) AND RESET FUNCTIONS DESCRIPTION The L4946B is a quad output low drop voltage regulator. The four outputs are a low drop 10V at 125mA (VO1), a 8.5V at 250mA (VO2), a 5V at 200mA (VO3) and a low drop 5V st-by line at 100mA (VO4). The IC includes a monitoring circuit to warn if a low voltage or no voltage condition is occurring. VO1,2,3 are off during st-by mode. BLOCK DIAGRAM MULTIPOWER BCD TECHNOLOGY Multiwatt 11 ORDERING NUMBER: L4946B The STCAP pin allows the battery voltage to decay slowly giving the µP time to store data. This IC is designed for supplying microcomputer controlled systems specially in automotive applications. L4946B 125mA 8.5V 250mA 200mA June 2000 1/9 L4946 OPERATING CONDITION Symbol VS IL Supply Voltage Load Current IO1 IO2 IO3 IO4 Parameter Value -13.5 to 26.5 300 400 600 100 Unit V mA mA mA mA ABSOLUTE MAXIMUM RATINGS Symbol VS VI VO Tstg Tj Supply Voltage Input Voltage (ON/OFF) Output Voltage (LVW, Reset) Storage Temperature Range Junction Temperature Range Load Dump (5ms rise, 115ms decay) Parameter Value -35 to 60 0 to 5 0 to 5 -65 to 150 max 150 60 Unit V V V °C °C V PIN CONNECTION APPLICATION C...