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LM4970 Datenblatt(PDF) 4 Page - Texas Instruments |
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LM4970 Datenblatt(HTML) 4 Page - Texas Instruments |
4 / 19 page LM4970 SNVS312D – JANUARY 2005 – REVISED MAY 2013 www.ti.com Control Interface Electrical Characteristics (1) (2) The following specifications apply for 3V ≤ VDD ≤ 5V unless otherwise specified. Limits apply for TA = 25°C. LM4970 Units Symbol Parameter Conditions (Limits) Typical(3) Limits(4)(5) t1 SCL period 2.5 μs (min) t2 SDA Setup Time 100 ns (min) t3 SDA Stable Time 0 ns (min) t4 Start Condition Time 100 ns (min) t5 Stop Condition Time 100 ns (min) VIH Digital Input High Voltage 0.7 x I2CVDD V (min) VIL Digital Input Low Voltage 0.3 x I2CVDD V (max) (1) All voltages are measured with respect to the GND pin unless otherwise specified. (2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which specify specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. (3) Typicals are measured at +25°C and represent the parametric norm. (4) Limits are ensured to AOQL (Average Outgoing Quality Level). (5) Datasheet min/max specification limits are ensured by design, test, or statistical analysis. Color LED Driver Electrical Characteristics VDD = 5.0V (1) (2) (3) The following specifications apply for VDD = 5.0V unless otherwise specified. Limits apply for TA = 25°C. LM4970 Units Symbol Parameter Conditions (Limits) Typical(4) Limits(5)(6) IDDRGB Supply Curent 2.5 4 mA (max) ISDRGB Shutdown Current Shutdown Mode 1.5 3.5 μA (max) .66X current drive setting 14 mA 1X current drive setting 21 mA ILED LED Drive Current 1.33X current drive setting 30 mA 2X current drive setting 42 23 mA (min) fPWM PWM Frequency PWM_F<1:0> = '01' 60 Hz Maximum setting 12 dB Input Signal Level Gain Control Minimum setting –11 dB (1) All voltages are measured with respect to the GND pin unless otherwise specified. (2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which specify specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. (3) Shutdown current and supply current are measured in a normal room environment. All digital input pins are connected to I2CVDD. (4) Typicals are measured at +25°C and represent the parametric norm. (5) Limits are ensured to AOQL (Average Outgoing Quality Level). (6) Datasheet min/max specification limits are ensured by design, test, or statistical analysis. 4 Submit Documentation Feedback Copyright © 2005–2013, Texas Instruments Incorporated Product Folder Links: LM4970 |
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