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L9903TR
L9903 MOTOR BRIDGE CONTROLLER 1 ■ ■ ■ ■ ■ ■ ■ ■ ■ FEATURES Figure 1. Package OPERATING SUPPLY VOLTAGE 8V TO 20V, OVERVOLTAGE MAX. 40V OPERATING SUPPLY VOLTAGE 6V WITH IMPLEMENTED STEPUP CONVERTER QUIESCENT CURRENT IN STANDBY MODE LESS THAN 50µA ISO 9141 COMPATIBLE INTERFACE CHARGE PUMP FOR DRIVING A POWER MOS AS REVERSE BATTERY PROTECTION PWM OPERATION FREQUENCY UP TO 30KHZ PROGRAMMABLE CROSS CONDUCTION PROTECTION TIME OVERVOLTAGE, UNDERVOLTAGE, SHORT CIRCUIT AND THERMAL PROTECTION REAL TIME DIAGNOSTIC SO20 Table 1. Order Codes Part Number Package L9903 SO20 L9903TR Tape & Reel 2 DESCRIPTION Control circuit for power MOS bridge driver in automotive applications with ISO 9141bus interface. Figure 2. Block Diagram VS 10 ST 1 R CP Reference BIAS + VCC VCC EN 2 4 REN DIR GH1 14 S1 Thermal shutdown Control Logic DG CB1 Overvoltage Undervoltage RDG CP 12 f ST 11 13 Charge pump = V STH 5 R DIR R S1 V S1TH = 19 GL1 R GL1 18 GL2 R GL2 VCC 17 R PWM PWM S2 3 R S2 V S2TH = 15 6 Timer ISO-Interface RX VCC TX 8 CB2 9 7 R RX GH2 16 PR = 0.5 V VS R TX I KH 20 September 2013 K GND REV. 5 1/17
STM
STMicroelectronics NV
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