Contents
1. Overview ......................................................................................................................................................... 5
1.1 Block Diagram ....................................................................................................................................... 5
1.2 Ordering Information .............................................................................................................................. 6
1.3 Pin Configuration ................................................................................................................................... 6
1.4 Pin Description ....................................................................................................................................... 6
1.5 Absolute Maximum Ratings ................................................................................................................... 7
1.6 Thermal Information .............................................................................................................................. 7
1.7 Recommended Operating Conditions ................................................................................................... 7
1.8 Electrical Specifications ......................................................................................................................... 8
2. Typical Performance Curves ...................................................................................................................... 10
3. Detailed Description .................................................................................................................................... 12
3.1 Linear Regulators ................................................................................................................................ 12
3.1.1. Internal 5V Linear Regulator ................................................................................................. 12
3.1.2. Using an External NPN Transistor ........................................................................................ 12
3.1.3. Using an External Step-Down Regulator .............................................................................. 13
3.1.4. 3.3V Regulator (IO Voltage) .................................................................................................. 13
3.1.5. Thermal Considerations ........................................................................................................ 13
3.2 C/Q Driver ............................................................................................................................................ 13
3.2.1. Driver Enable/Disable ........................................................................................................... 13
3.2.2. Overcurrent Protection .......................................................................................................... 14
3.2.3. Low Voltage Detection .......................................................................................................... 14
3.2.4. Thermal Protection ................................................................................................................ 14
3.3 Receiver Threshold ............................................................................................................................. 15
3.4 Wake-Up Detection ............................................................................................................................. 15
3.5 Wake-Up Generation ........................................................................................................................... 15
3.5.1. Master Mode ......................................................................................................................... 15
3.5.2. Device Mode ......................................................................................................................... 16
3.5.3. Used Pin ................................................................................................................................ 16
3.6 Protection ............................................................................................................................................. 16
3.6.1. Surge Protection ................................................................................................................... 16
3.6.2. Reverse Polarity Protection................................................................................................... 16
3.6.3. Broken Chip Detection .......................................................................................................... 16
4. OWI Interface ................................................................................................................................................ 17
4.1 OWI Protocol ....................................................................................................................................... 17
4.2 OWI Commands Structure .................................................................................................................. 17
4.2.1. OWI Write Command ............................................................................................................ 17
4.2.2. OWI Read Command ............................................................................................................ 18
5. Register Map ................................................................................................................................................ 20
5.1 IRQ_Status .......................................................................................................................................... 20
5.2 Status ................................................................................................................................................... 21
5.3 IRQ_Enable ......................................................................................................................................... 22
5.4 comParam ........................................................................................................................................... 23
5.5 comCtrl1 .............................................................................................................................................. 24