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L9779WD 数据表(PDF) 90 Page - STMicroelectronics |
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L9779WD 数据表(HTML) 90 Page - STMicroelectronics |
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90 / 170 page  Functional description L9779WD 90/170 DocID027452 Rev 5 Note: When power stages are configured in parallel mode, some parameters change depending on CONFIG_REG7 and CONFIG_REG10 registers (refer to register configuration Table 39 & 40). (CPS) CONFIG_REG10 (WR_CPS command 110011) OUT21, 25 THOLD Switch on to off delay during low battery voltage operation. Tested by SCAN - 400 - 800 ms VB_LV VB voltage threshold for low battery function -- - 4.15 V Table 38. Diagnosis characteristic of [OUT21], [OUT23], [OUT25], [OUT26] when configured as single power stages (continued) Pin Symbol Parameter Test condition Min Typ Max Unit Table 39. CPS table single mode parallelism Register bit 73 210 If not specified Output Drivers are set as single (not in parallel with any other) Over Current mask time increased to 8 µs (bit 6…4 set Low, they can be combined as per next table) Enable by Diagn on 2Low 0 0 0 1 0 OUT22 and OUT24 Low side Parallel OUT24 OUT22 2Low 2Low 0 0 1 0 0 OUT22 and OUT24 Low side Parallel OUT27 and OUT28 Low side Parallel OUT24 OUT27 OUT22 OUT27 4Low 0 1 0 0 0 OUT22 and OUT24 and OUT27 and OUT28 Low side Parallel OUT24 OUT22 2High 0 0 1 1 0 OUT21 and OUT23 High side Parallel OUT23 OUT21 2High 2high 0 1 1 1 0 OUT21 and OUT23 High side Parallel OUT25 and OUT26 High side Parallel OUT23 OUT25 OUT21 OUT25 4High 0 1 0 1 0 OUT21 and OUT23 and OUT25 and OUT26 High side Parallel OUT23 OUT21 3High 1 0 1 0 0 OUT23 and OUT25 and OUT26 High side Parallel OUT23 OUT25 3Low 1 1 1 0 0 OUT24 and OUT27 and OUT28 Low side Parallel OUT24 OUT24 Table 40. CPS table combined mode parallelism Register bit 7 6 5 4 3 2 1 0 Over current mask time increased to 8 µs Enable by Diagn on 2Low 2High 0 001 001 0 OUT22 and OUT24 Low side Parallel OUT25 and OUT26 High side Parallel OUT24 OUT25 OUT22 OUT25 2Low 2Low 2High 0 0 0 1 0 1 0 0 OUT27 and OUT28 Low side Parallel OUT22 and OUT24 Low side Parallel OUT25 and OUT26 High side Parallel OUT27 OUT24 OUT25 OUT27 OUT24 OUT25 3Low 3High 1 1 1 0 1 1 1 0 0 1 1 1 0 0 0 0 OUT24 and OUT27 and OUT28 Low side Parallel OUT23 and OUT25 and OUT26 High side Parallel OUT24 OUT23 OUT24 OUT25 |
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