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LB11948T-TLM-E 데이터시트(PDF) 4 Page - ON Semiconductor |
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LB11948T-TLM-E 데이터시트(HTML) 4 Page - ON Semiconductor |
4 / 13 page LB11948T No.7947-4/13 Pin Functions Pin No. Pin Name Description 1 OUT1- Output 2 OUT1 Output 3 NC Unused 4 NC Unused 5 D-GND Lower side internal diode anode connection 6 E1 Constant current control sensing The motor current is set by the value of the sensing resistor Re connected between the E1 pin and ground. The current is set according to the following equation : IO = VREF/Re (A) 7 VS1 VS power supply 8 NC Unused 9 VCC VCC power supply 10 CR RC oscillator connection 11 VREF1 Current setting system reference voltage input VREF1 voltage range : 0 to 0.5V 12 NC Unused 13 ENABLE1 Output is turned on when ENABLE1 is low, and the output is turned off (operating state) when ENABLE1 is high. 14 PHASE1 Logic level input : phase switching When PHASE1 = high : Output pin states : OUT1 : high, OUT1- : low. When PHASE1 = low : Output pin states : OUT1 : low, OUT1- : high. 15 ST Standby mode setting When ST = high : the IC operates in normal operating mode. When ST = low : the IC operates in standby mode. The VS and VCC current drain levels are under 1μA in this mode. 16 NC Unused 17 1VREG 1V regulator circuit output The LB11948 includes an internal 1V regulator circuit, and this pin is the output from that circuit. The VREF1 and VREF2 reference voltages can be set by voltage dividing the 1V regulator output. 18 PHASE2 Logic level input : phase switching When PHASE2 = high : Output pin states : OUT2 : high, OUT2- : low. When PHASE2 = low : Output pin states : OUT2 : low, OUT2- : high. 19 ENABLE2 Output is turned on when ENABLE2 is low, and the output is turned off (operating state) when ENABLE2 is high. 20 VREF2 Current setting reference voltage input VREF2 voltage range : 0 to 0.5V 21 GND Ground (small signal circuit system ground) 22 PGND Power system ground (high current circuit system ground) 23 NC Unused 24 VS2 VS power supply 25 E2 Constant current control sensing The motor current is set by the value of the sensing resistor Re connected between the E2 pin and ground. The current is set according to the following equation : IO = VREF/Re (A) 26 D-GND2 Lower side internal diode anode connection 27 NC Unused 28 NC Unused 29 OUT2 Output 30 OUT2- Output |
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