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TLC5970RHPT Datasheet(PDF) 6 Page - Texas Instruments |
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TLC5970RHPT Datasheet(HTML) 6 Page - Texas Instruments |
6 / 48 page D (%)= - 1 I OUTn (I +I +I ) OUT0 OUT1 OUT2 3 ´ 100 D (%)= IdealOutputCurrent - (IdealOutputCurrent) (I +I +I ) OUT0 OUT1 OUT2 3 ´ 100 I =125 ´ OUT(IDEAL) 1.20 R IREF 100 (I atVREG=3.0V) OUTn (I atVREG=5.5V) (I atVREG=3V) OUTn OUTn - 5.5V 3V - D (%/V)= ´ 100 3V 1V - ´ (I atV =1V) OUTn OUTn (I atV =3V) (I atV =1V) - OUTn OUTn OUTn OUTn D (%/V)= TLC5970 SBVS140 – MARCH 2010 www.ti.com ELECTRICAL CHARACTERISTICS (continued) At VCC = 10 V to 36 V and TA = –40°C to +85°C. Typical values at VCC = 24 V, FB = 17 V, and TA = +25°C, unless otherwise noted. TLC5970 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LED DRIVER BLOCK At OUT0 to OUT2 pins. OUTn are on, IOLC Constant output current DCn = BC = 7Fh, 136 151 166 mA VOUT = 1 V, RIREF = 1 kΩ At OUT0 to OUT2 pins. OUTn are off, DCn = 7Fh, IOLKG Leakage output current 0.1 µA BC = 7Fh, VOUT = 17 V, RIREF = 1 kΩ At OUT0 to OUT2 pins. OUTn are on, Constant-current error ΔIOLC DCn = BC = 7Fh, ±0.5 ±3 % (channel-to-channel)(1) VOUT = 1 V, RIREF = 1 kΩ At OUT0 to OUT2 pins. OUTn are on, Constant-current error ΔIOLC1 DCn = BC = 7Fh, ±3 ±6 % (device-to-device)(2) VOUT = 1 V, RIREF = 1 kΩ OUT0 to OUT2 are on, DCn = BCn = 7Fh, ΔIOLC2 Line regulation(3) ±0.5 ±2 %/V VOUT = 1 V, RIREF = 1 kΩ, VREG = 3.3 V to 5.5 V OUT0 to OUT2 are on, DCn = BCn = 7Fh, ΔIOLC3 Load regulation(4) ±1 ±2 %/V VOUT = 1 V to 3 V, RIREF = 1 kΩ VIREF Reference voltage output IREF0 to IREF2, RIREF = 1 kΩ 1.17 1.20 1.23 V (1) The deviation of each output from the average of OUT0–OUT2 constant-current. Deviation is calculated by the formula: (2) The deviation of the OUT0–OUT2 constant-current average from the ideal constant-current value. Deviation is calculated by the following formula: Ideal current is calculated by the formula: (3) Line regulation is calculated by this equation: (4) Load regulation is calculated by the equation: 6 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): TLC5970 |
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