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L99ASC03 数据表(PDF) 7 Page - STMicroelectronics |
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L99ASC03 数据表(HTML) 7 Page - STMicroelectronics |
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7 / 73 page  DocID023504 Rev 7 7/73 L99ASC03 Block diagram and pin descriptions 72 1 Block diagram and pin descriptions Figure 1. Block diagram GAPGCFT00013 L99ASC03 SDI SDO CSN SCK IH1 IL1 Gate Driver HS Gate Driver LS x 3 Control Diagnosis Control Diagnosis GH1 SH1 GL1 CSI+ CSI- CSO Programmable Gain & Shutdown AGND CP1+ CP1- CP2+ CP2- CP Central 2 Step Charge Pump EMC optimized „Spread Spectrum“ VCP VCP Programmable VDSTH & tDead GH2 SH2 GL2 SL1 DIS Undervoltage Overvoltage Det. VSMS VBAT VS VBAT VSMS SL2 SL3 GL3 SH3 GH3 BLDC Motor IH2 IL2 IH3 IL3 Temperature Prewarning & Temperature Shutdown T Juntion VS Monitoring NRES VSREG CSA x 3 RSense INH Ignition / Klemme 15 + - STM8A VDD VDD 100k VSREG 20k 20k SGND2 DAC BEMF Detection AOUT AMUX 5V Voltage Regulator (and Reset) BEMFOUT DOUT Control Logic Wake up From Sleep mode MOSFET Control SPI Interface Window Watchdog FS_FLAG DMUX SGND1 SGND3 CCP1 220nF CCP2 220nF CTANK 1μF CVS 100nF CVSREG 100nF RINH 10kΩ Note: This is a very simplified example of an application circuit. The function must be verified in the real application. The external componant values should be used as guidline only. RCP 10kΩ R 100kΩ * Size according application requirements (Voltage dropout test, warm cranking, …) C * BC C * VS NINT CINH 100nF Table 2. Pin definition and function Pin number Symbol Function I/O type 1 SL3 Source of external low-side MOSFET 3 I/O 2 CSI+ Current-sense amplifier positive input I 3 CSI- Current-sense amplifier negative input I 4 SGND2 Signal Ground 2 GND 5 CSO Current-sense amplifier output O 6 IL3 Input of low-side switch 3 I 7IH3 Input of high-side switch 3 I 8 IL2 Input of low-side switch 2 I 9IH2 Input of high-side switch 2 I 10 IL1 Input of low-side switch 1 I 11 IH1 Input of high-side switch 1 I |
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