L9348 QUAD LOW SIDE DRIVER SUPPLY VOLTAGE RANGE: 4.8 TO 18V OUTPUT VOLTAGE UP TO 40V OUTPUT VOLTAGE CLAMP DURING RECIRCULATION OF INDUCTIVE LOADS OUTPUT CURRENT CAPABILITY 2 X 5A AND 2 X 3A PowerSO-36 BARE DIE LOW POWER DISSIPATION DURING ORDERING NUMBERS: RECIRCULATION OF INDUCTIVE LOADS BY L9348 L9348-DIE1 INTEGRATED FREE WHEELING DIODES (3A-DRIVERS ONLY) 3.3V CMOS COMPATIBLE INPUTS AND STATUS LOW ON-RESISTANCE 2 X 0.2 , 2 X 0.35 (TYP.) DESCRIPTION OUTPUT SHORT CIRCUIT CURRENT PROTECTION The L9348 is a monolithic integrated quad low side driver realized in advanced Multipower-BCD technol- REAL TIME DIAGNOSTIC FUNCTIONS ogy. It is intended to drive inductive loads (relays, OVERTEMPERATURE SHUTDOWN electromagnetic valves) in automotive and industrial SIGNAL- AND POWER-GROUND-LOSS applications. SHUTDOWN Figure 1. Block Diagram VS Voltage Regulator V S + VREG = V V DD CC C 166kHz EN Q1 V DD V S IN1 EN FAIL 1 OL SCP PGND1 V REG TSD 5A - DRIVER GL ST1 CHANNEL1 PWRES IN2 C 166kHz EN Q2 CHANNEL2 PWRES ST2 PGND2 V S V DD EN ENA PWRES PWRES C 166kHz C 166kHz EN D3 Q3 V V DD S IN3 EN FAIL 1 OL SCP V PGND3 REG TSD 3A - DRIVER GL ST3 FB CHANNEL3 PWRES D4 C 166kHz EN IN4 Q4 CHANNEL4 PWRES ST4 PGND4 99AT0073 GND September 2013 1/13 Diagnostic DiagnosticL9348 Figure 2. Pin Connection N.C. 1 36 N.C. 2 35 ST3 PGND3 3 34 IN1 4 33 IN3 Q3 5 32 ST1 6 31 D3 PGND1 7 30 8 29 N.C. Q1 9 28 VS 10 27 GND Q2 11 26 PGND2 12 25 D4 13 24 ENA 14 23 ST2 Q4 15 22 IN4 16 21 IN2 PGND4 17 20 ST4 N.C. 18 19 N.C. 99AT0074 Table 1. Pin Description N Pin Function 1, 18, N.C. (GND) 19, 36 2, 3 PGND3 Power Ground Channel 3 4, 5 Q3 Power Output Channel 3 (3A switch) 6, 7 D3 Recirculation Diode Channel 3 8, 9 Q1 Power Output Channel 1 (5A switch) 10, 11 Q2 Power Output Channel 2 (5A switch) 12, 13 D4 Recirculation Diode Channel 4 14, 15 Q4 Power Output Channel 4 (3A switch) 16, 17 PGND4 Power Ground Channel 4 20 ST4 Status Output Channel 4 21 IN2 Control Input Channel 2 22 IN4 Control Input Channel 4 23 ST2 Status Output Channel 2 24 ENA Enable 25, 26 PGND2 Power Ground Channel 2 27 GND Signal Ground 28 VS Supply Voltage 29 N.C. Not Connected 30, 31 PGND1 Power Output Channel 3 32 ST1 Status Output Channel 1 33 IN3 Control Input Channel 3 34 IN1 Control Input Channel 1 2/13