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SLG46585 Datasheet(PDF) 3 Page - Dialog Semiconductor |
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SLG46585 Datasheet(HTML) 3 Page - Dialog Semiconductor |
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3 / 210 page  Datasheet 18-Sep-2019 CFR0011-120-00 Revision 3.3 3 of 210 © 2019 Dialog Semiconductor SLG46585 GreenPAK Programmable Mixed-Signal Matrix with Asynchronous State Machine, LDOs, and DC/DC Converter 16 Clocking .......................................................................................................................................................................... 109 16.1 OSC General Description ................................................................................................................................. 109 16.2 Low Power OSC (1.73 kHz) ............................................................................................................................. 109 16.3 Configurable OSC(25 kHz/2MHz) ....................................................................................................................110 16.4 Oscillator Power-On Delay ...............................................................................................................................110 16.5 Oscillator Accuracy ..........................................................................................................................................113 17 Power-On Reset .............................................................................................................................................................. 115 17.1 General Operation ............................................................................................................................................ 115 17.2 POR Sequence ................................................................................................................................................116 17.3 Macrocells Output States During POR Sequence ........................................................................................... 116 17.4 External Reset .................................................................................................................................................. 118 18 Asynchronous State Machine Macrocell ..................................................................................................................... 122 18.1 ASM Macrocell Overview ................................................................................................................................. 122 18.2 ASM Inputs ....................................................................................................................................................... 123 18.3 ASM Outputs .................................................................................................................................................... 125 18.4 Basic ASM Timing ............................................................................................................................................ 127 18.5 Asynchronous State Machines vs. Synchronous State Machines ................................................................... 127 18.6 ASM Power Consideration ...............................................................................................................................127 18.7 ASM Logical vs. Physical Design ..................................................................................................................... 128 18.8 ASM Special Case Timing Considerations ...................................................................................................... 128 19 I2C Serial Communications Macrocell ......................................................................................................................... 133 19.1 I2C Serial Communications Macrocell Overview .............................................................................................133 19.2 I2C Serial Communications Device Addressing ............................................................................................... 133 19.3 I2C Serial General Timing ................................................................................................................................ 134 19.4 I2C Serial Communications Commands .......................................................................................................... 134 19.5 I2C Serial Command Register Map ................................................................................................................. 138 20 Low Dropout Regulators ............................................................................................................................................... 141 20.1 LDO Regulator Description .............................................................................................................................. 141 20.2 Over-Current Limit and Short-Circuit Detection ............................................................................................... 146 20.3 LDO Efficiency ................................................................................................................................................. 146 20.4 LDO Thermal Considerations ........................................................................................................................... 146 20.5 Soft Start Function (SS) ................................................................................................................................... 147 20.6 ACMPs: Under Voltage Lockout Capability, Power Good ................................................................................ 147 20.7 Regulator Stability Considerations ................................................................................................................... 148 20.8 LDO Regulator Cold Start up ........................................................................................................................... 148 20.9 LDO Regulator Hot Start up ............................................................................................................................. 148 20.10 Discharge Resistors ....................................................................................................................................... 148 20.11 Typical Application Circuit .............................................................................................................................. 148 20.12 Typical Application Performance ....................................................................................................................149 21 1 A Synchronous DC/DC Step Down Converter .......................................................................................................... 152 21.1 DC/DC Buck Converter Description ................................................................................................................. 152 21.2 Synchronous DC/DC Step Down Converter Block Diagram ............................................................................ 152 21.3 Typical Application Circuit ................................................................................................................................ 152 21.4 DC/DC Buck Converter Pinout Description ...................................................................................................... 153 21.5 Configurable Parameters ................................................................................................................................. 153 21.6 Output Voltage Selection ................................................................................................................................. 154 21.7 Switching Frequency Selection ........................................................................................................................ 154 21.8 Over-Current Protection Level Selection .......................................................................................................... 154 21.9 DC/DC Thermal Shutdown ...............................................................................................................................155 21.10 DC/DC Under Voltage Lockout ...................................................................................................................... 155 21.11 Fault Signals .................................................................................................................................................. 155 21.12 DC/DC Soft Start ............................................................................................................................................ 155 21.13 Constant-On-Time ..........................................................................................................................................155 21.14 DC/DC Continuous Conduction Mode (CCM) ................................................................................................ 156 21.15 DC/DC Discontinuous Conduction Mode (DCM) ........................................................................................... 156 21.16 DC/DC Power Dissipation .............................................................................................................................. 156 21.17 Layout Consideration .....................................................................................................................................158 |
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