ZHCSFP2B October 2016 – September 2021 TPS3850
PRODUCTION DATA
| MIN | TYP | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| GENERAL | ||||||
| tINIT | CWD, CRST pin evaluation period(1) | 381 | μs | |||
| tSET | Time required between changing SET0 and SET1 pins | 500 | μs | |||
| SET0, SET1 pin setup time | 1 | μs | ||||
| Startup delay(2) | 300 | μs | ||||
| RESET FUNCTION | ||||||
| tRST | Reset timeout period | CRST = NC | 170 | 200 | 230 | ms |
| CRST = 10 kΩ to VDD | 8.5 | 10 | 11.5 | ms | ||
| tRST-DEL | VSENSE to RESET delay | VDD = 5 V, VSENSE = VIT+(OV) + 2.5% | 35 | μs | ||
| VDD = 5 V, VSENSE = VIT-(UV) – 2.5% | 17 | |||||
| WINDOW WATCHDOG FUNCTION | ||||||
| WD ratio | Window watchdog ratio of lower boundary to upper boundary | CWD = programmable, SET0 = 0, SET1 = 0(3) | 1/8 | |||
| CWD = programmable, SET0 = 1, SET1 = 1(3) | 1/2 | |||||
| CWD = programmable, SET0 = 0, SET1 = 1(3)(4) | 3/4 | |||||
| tWDL | Window watchdog lower boundary | CWD = NC, SET0 = 0, SET1 = 0 | 19.1 | 22.5 | 25.9 | ms |
| CWD = NC, SET0 = 0, SET1 = 1 | 1.48 | 1.85 | 2.22 | ms | ||
| CWD = NC, SET0 = 1, SET1 = 0 | Watchdog disabled | |||||
| CWD = NC, SET0 = 1, SET1 = 1 | 680 | 800 | 920 | ms | ||
| CWD = 10 kΩ to VDD, SET0 = 0, SET1 = 0 | 7.65 | 9.0 | 10.35 | ms | ||
| CWD = 10 kΩ to VDD, SET0 = 0, SET1 = 1 | 7.65 | 9.0 | 10.35 | ms | ||
| CWD = 10 kΩ to VDD, SET0 = 1, SET1 = 0 | Watchdog disabled | |||||
| CWD = 10 kΩ to VDD, SET0 = 1, SET1 = 1 | 1.48 | 1.85 | 2.22 | ms | ||
| tWDU | Window watchdog upper boundary | CWD = NC, SET0 = 0, SET1 = 0 | 46.8 | 55.0 | 63.3 | ms |
| CWD = NC, SET0 = 0, SET1 = 1 | 23.375 | 27.5 | 31.625 | ms | ||
| CWD = NC, SET0 = 1, SET1 = 0 | Watchdog disabled | |||||
| CWD = NC, SET0 = 1, SET1 = 1 | 1360 | 1600 | 1840 | ms | ||
| CWD = 10 kΩ to VDD, SET0 = 0, SET1 = 0 | 92.7 | 109.0 | 125.4 | ms | ||
| CWD = 10 kΩ to VDD, SET0 = 0, SET1 = 1 | 165.8 | 195.0 | 224.3 | ms | ||
| CWD = 10 kΩ to VDD, SET0 = 1, SET1 = 0 | Watchdog disabled | |||||
| CWD = 10 kΩ to VDD, SET0 = 1, SET1 = 1 | 9.35 | 11.0 | 12.65 | ms | ||
| tWD-setup | Setup time required for device to respond to changes on WDI after being enabled | 150 | μs | |||
| Minimum WDI pulse duration | 50 | ns | ||||
| tWD-del | WDI to WDO delay | 50 | ns | |||