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TPS61050 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS61050 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 45 page www.ti.com I2C INTERFACE TIMING CHARACTERISTICS (1) TPS61050 TPS61052 SLUS525 – MARCH 2007 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise noted the specification applies for V IN = 3.6 V over an operating junction temp. of –40°C ≤ TJ ≤ 125°C. Typical values are for T A = 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TIMING From shutdown into torch mode ILED = 75 mA 1.2 ms Start-up time From shutdown into voltage mode via ENVM 650 µs IOUT = 0 mA LED current settling time(2) triggered by MODE_CTRL[1:0] = 10, 400 µs rising edge on FLASH_SYNC ILED = from 0 mA to 900 mA LED current settling time(2) triggered by MODE_CTRL[1:0] = 10, 20 µs TX mask ILED = 900 mA to 150 mA (2) Settling time to ±15% of the target value PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Standard mode 100 fSCL SCL clock frequency kHz Fast mode 400 Standard mode 4.7 tBUF Bus free time between a STOP and START condition µs Fast mode 1.3 Standard mode 4.0 µs tHD; tSTA Hold time (repeated) START condition Fast mode 600 ns Standard mode 4.7 tLOW LOW period of the SCL clock µs Fast mode 1.3 Standard mode 4.0 µs tHIGH HIGH period of the SCL clock Fast mode 600 ns Standard mode 4.7 µs tSU; tSTA Setup time for a repeated START condition Fast mode 600 ns Standard mode 250 tSU; tDAT Data setup time ns Fast mode 100 Standard mode 0 3.45 tHD; tDAT Data hold time µs Fast mode 0 0.9 Standard mode 20 + 0.1CB 1000 tRCL Rise time of SCL signal ns Fast mode 20 + 0.1CB 300 Standard mode 20 + 0.1CB 1000 Rise time of SCL signal after a repeated START condition tRCL1 ns and after an acknowledge bit Fast mode 20 + 0.1CB 1000 Standard mode 20 + 0.1CB 300 tFCL Fall time of SCL signal ns Fast mode 20 + 0.1CB 300 Standard mode 20 + 0.1CB 1000 tRDA Rise time of SDA signal ns Fast mode 20 + 0.1CB 300 Standard mode 20 + 0.1CB 300 tFDA Fall time of SDA signal ns Fast mode 20 + 0.1CB 300 Standard mode 4.0 µs tSU; tSTO Setup time for STOP condition Fast mode 600 ns CB Capacitive load for SDA and SCL 400 pF (1) Assured by design. Not tested in production. 4 Submit Documentation Feedback |
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