RT8900 Level Shifter General Description Features The RT8900 is an 8-Channel level shifter suitable for TFTLCD row drivers. The RT8900 will level shift a digital input signal to an output voltage nearly equal to its output supply voltages. The RT8900 has 3 supplies : VGH1 and VGH2 are positive supplies with a voltage range from 20V to 35V and VGL is the negative supply with a voltage range from −5V to −10V. Outputs 0 to 5 are supplied from VGH1 and VGL. Outputs 6 and 7 are supplied from VGH2 and VGL. This configuration enables outputs 0 to 5 to provide slicing to the TFT-LCD row drivers to reduce flicker. VGH2 should be remained constant. The RT8900 is available in TSSOP-20 and WQFN-20L 4x4 packages. z z z z z z z z z z 0V to 6V Input Logic level Range −10V to 35V Output Voltage Range 15mA Output Continuous Current (per channel) 150mA Output Peak Current (per channel) Rise/Fall Times 9ns/10ns Propagation Delay 55ns 100kHz Input Frequency 15μ μA Ultra-low Quiescent Current 20-Lead TSSOP and WQFN 4x4 Packages RoHS Compliant and Halogen Free Applications z TFT-LCD Panels Ordering Information RT8900 Package Type C : TSSOP-20 Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) RT8900 Package Type QW : WQFN-20L 4x4 (W-Type) (Exposed Pad-Option 1) Pin Configurations (TOP VIEW) GND VIN0 VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VGL TSSOP-20 VIN0 GND VGH1 VOUT0 VOUT1 Lead Plating System Z : ECO (Ecological Element with Halogen Free and Pb free) Note : Richtek products are : ` RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. VGH1 VOUT0 VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 VGH2 20 19 18 17 16 15 14 13 12 11 2 3 4 5 6 7 8 9 10 20 19 18 17 16 VIN1 VIN2 VIN3 VIN4 VIN5 1 15 2 14 NC 3 4 13 12 21 5 11 7 8 9 10 VIN6 VIN7 VGL VGH2 VOUT7 6 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 WQFN-20L 4x4 DS8900-06 September 2011 www.richtek.com 1 RT8900 Marking Information RT8900PC RT8900ZQW DJ : Product Code RT8900PC : Product Number RT8900 PCYMDNN YMDNN : Date Code YMDNN : Date Code DJ YM DNN RT8900GC RT8900GC : Product Number RT8900 GCYMDNN YMDNN : Date Code Typical Application Circuit RT8900 0.1µF* VIN0 VIN0 VGH1 VIN1 VIN1 VOUT0 VIN2 VIN2 VIN3 VIN3 VIN4 VIN4 VIN5 VIN5 VIN6 VIN6 VIN7 VIN7 VGL 10µF* VGH1 CL0 100pF* CL1 100pF* CL2 100pF* CL3 100pF* CL4 100pF* CL5 100pF* CL6 100pF* CL7 100pF* VOUT1 VOUT1 VOUT2 VOUT3 VOUT4 VGL VOUT5 10µF* 0.1µF* VOUT6 VGH2 VGH2 VOUT7 10µF* 0.1µF* GND VOUT0 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 * Rated Voltage = 50V www.richtek.com 2 DS8900-06 September 2011 RT8900 Functional Pin Description Pin Number TSSOP-20 WQFN-20L 4x4 1 19 2 to 9 20, 1 to 7 10 Pin Name Pin Function GND Ground. VIN0 to VIN7 Low-Voltage Input. 8 VGL Negative Power Input for Channel 0 to 7. 11 9 VGH2 Positive Power Input for Channel 6 and 7. 12 to 19 10 to 17 VOUT7 to VOUT0 High-Voltage Output. 20 18 VGH1 Positive Power Input for Channel 0 to 5. (VGH1 ≤ VGH2) -- 21 (Exposed Pad) NC No Internal Connection. The Exposed Pad must be soldered to a large PCB for maximum power dissipation. Function Block Diagram VGH1 6ch VIN0 to VIN5 VOUT0 to VOUT5 VGL VIN6 to VIN7 2ch GND DS8900-06 September 2011 VOUT6 to VOUT7 VGH2 www.richtek.com 3 RT8900 Absolute Maximum Ratings z z z z z z z z z z z z z (Note 1) Positive Supply Voltage, VGH2 to GND ------------------------------------------------------------------------------Positive Supply Voltage, VGH1 to GND ------------------------------------------------------------------------------Positive Supply Voltage, VGH1, VGH2 to VGL --------------------------------------------------------------------Negative Supply Voltage, VGL to GND -------------------------------------------------------------------------------Input Voltage Range, VIN0...VIN7 to GND ---------------------------------------------------------------------------Output Voltage Range, VOUT0...VOUT7 to GND ------------------------------------------------------------------Output Voltage Range, VOUT0...VOUT7 to VGL ------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C −0.3V to 40V −0.3V to VGH2 −0.3V to 50V −40V to 0.3V −0.3V to 7V −40V to 40V −0.3V to 50V TSSOP-20 -------------------------------------------------------------------------------------------------------------------WQFN-20L 4x4 ------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2) TSSOP-20, θJA -------------------------------------------------------------------------------------------------------------WQFN-20L 4x4, θJA -------------------------------------------------------------------------------------------------------WQFN-20L 4x4, θJC ------------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------Storage Temperature Range --------------------------------------------------------------------------------------------Junction Temperature -----------------------------------------------------------------------------------------------------ESD Susceptibility (Note 3) HBM (Human Body Mode) ----------------------------------------------------------------------------------------------MM (Machine Mode) ------------------------------------------------------------------------------------------------------- 0.813W 1.852W Recommended Operating Conditions z z z z z 123°C/W 54W 7W 260°C −65°C to 150°C 150°C 2kV 200V (Note 4) VGH1, VGH2 to VGL -----------------------------------------------------------------------------------------------------VGH1, VGH2 to GND -----------------------------------------------------------------------------------------------------VGL to GND ----------------------------------------------------------------------------------------------------------------Junction Temperature Range --------------------------------------------------------------------------------------------Ambient Temperature Range --------------------------------------------------------------------------------------------- 10.8V to 45V 10.8V to 35V −35V to 0V −40°C to 125°C −40°C to 85°C Electrical Characteristics (VGH1 = VGH2 = 25V to 30V, VGL= −5V to −10V, GND = 0V, TA = 25°C, unless otherwise specified.) Parameter Symbol Test Conditions Min Typ Max Unit 1.7 -- 6 V 0 -- 0.8 V −1 -- 1 μA VVGH1,2 −1 -- -- V -- -- VGL + 1 V IOH = −10mA/IOL = 10mA -- 16 -- Ω VVGH1 = VVGH2 = 27V, VVGL = −7V -- 47 -- ns Input High Threshold Voltage VINxH Input Low Threshold Voltage VINxL Input leakage Current IIL Output High Voltage VOH Output Low Voltage VOL Output Impedance RO Low to High Transition (Note 5) tPLH VVIN0 to 7 = 0V or 5.5V VVGH1 = VVGH2 = 27V, VVGL = −7V, IOH = −10mA VVGH1 = VVGH2 = 27V, VVGL = −7V, IOL = 10mA VVGH1 = VVGH2 = 27V, VVGL = −7V, To be continued www.richtek.com 4 DS8900-06 September 2011 RT8900 Parameter Test Conditions Min Typ Max Unit tPHL VVGH1 = VVGH2 = 27V, VVGL = −7V -- 55 -- ns tR VVGH1 = VVGH2 = 27V, VVGL = −7V -- 9 -- ns tF VVGH1 = VVGH2 = 27V, VVGL = −7V -- 10 -- ns Maximum Operation Frequency fO VVGH1 = VVGH2 = 27V, VVGL = −7V 50 100 -- kHz Quiescent I VGH1 IVGH1 VVIN0 to 7 = 0 or 6V, No Load -- 0 -- μA Quiescent I VGH2 IVGH2 VVIN0 to 7 = 0 or 6V, No Load -- 15 -- μA Quiescent I VGL IVGL VVIN0 to 7 = 0 or 6V, No Load -- 0 -- μA High to Low Transition (Note 5) Rise Time Fall Time (Note 5) (Note 5) Symbol Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. For WQFN-20L 4x4, θJA is measured in natural convection at TA = 25°C on a high-effective thermal conductivity four-layer test board of JEDEC 51-7 thermal measurement standard. The measurement case position of θJA is on the exposed pad of the package. For TSSOP-20, θJA is measured in natural convection at TA = 25°C on a low-effective thermal conductivity single-layer test board of JEDEC 51-3 thermal measurement standard. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Note 5. Switch characteristics are guaranteed by design; not subject to production testing. DS8900-06 September 2011 www.richtek.com 5 RT8900 Typical Operating Characteristics VGH1 Supply Current vs. Frequency Supply Current (mA) 3.8 VGH1 Supply Current vs. Capacitive Load 7.5 1Channel, VGL = −7V, RL = 5k, CL = 100pF, Duty Cycle = 50% 7.0 Supply Current (mA) 4.0 3.6 3.4 3.2 3.0 2.8 VGH1 = VGH2 = 30V VGH1 = VGH2 = 27V VGH1 = VGH2 = 25V 2.6 1Channel, VGL = −7V, RL = 5k, f = 20kHz , Duty Cycle = 50% 6.5 6.0 5.5 5.0 4.5 4.0 3.5 VGH1 = VGH2 = 30V VGH1 = VGH2 = 27V VGH1 = VGH2 = 25V 3.0 2.4 2.5 10 20 30 40 50 60 70 80 90 100 0.1 0.6 1.1 Frequency (kHz) 7.5 1Channel, VGL = −7V, RL = 5k, CL = 100pF, Duty Cycle = 50% 7.0 Supply Current (mA) Supply Current (mA) 3.9 3.7 VGH1 = VGH2 = 30V VGH1 = VGH2 = 27V VGH1 = VGH2 = 25V 3.5 3.3 3.1 2.9 2.7 3.1 3.6 4.1 4.6 1Channel, VGL = −7V, RL = 5k, f = 20kHz, Duty Cycle = 50% 6.5 6.0 5.5 5.0 4.5 VGH1 = VGH2 = 30V VGH1 = VGH2 = 27V VGH1 = VGH2 = 25V 4.0 3.5 2.5 10 20 30 40 50 60 70 80 90 100 0.1 0.6 1.1 Frequency (kHz) -0.6 -1 Supply Current (mA) 0 -0.8 -1.0 VGHL = −5V VGHL = −7V VGHL = −10V -1.4 2.1 2.6 3.1 3.6 4.1 4.6 VGL Supply Current vs. Capacitive Load -0.4 -1.2 1.6 Capacitive Load (nF) VGL Supply Current vs. Frequency Supply Current (mA) 2.6 3.0 2.5 -1.6 2.1 VGH2 Supply Current vs. Capacitive Load VGH2 Supply Current vs. Frequency 4.1 1.6 Capacitive Load (nF) 1Channel, VGH1 = VGH2 = 27V, RL = 5k, CL = 100pF, Duty Cycle = 50% -2 -4 -5 -6 -1.8 VGHL = −5V VGHL = −7V VGHL = −10V -3 1Channel, VGH1 = VGH2 = 27V, RL = 5k, f = 20kHz, Duty Cycle = 50% -7 10 20 30 40 50 60 70 Frequency (kHz) www.richtek.com 6 80 90 100 0.1 0.6 1.1 1.6 2.1 2.6 3.1 3.6 4.1 4.6 Capacitive Load (nF) DS8900-06 September 2011 RT8900 Rise Time vs. Capacitive Load 300 Fall Time vs. Capacitive Load 350 1Channel, VGH1 = VGH2 = 27V, VGL = −7V RL = 5k, f = 20kHz, Duty Cycle = 50% 300 250 200 Fall Time (ns) Rise Time (ns) 250 1Channel, VGH1 = VGH2 = 27V, VGL = −7V RL = 5k, f = 20kHz, Duty Cycle = 50% 150 100 200 150 100 50 50 0 0 0.1 0.6 1.1 1.6 2.1 2.6 3.1 3.6 4.1 0.1 0.6 1.1 tPLH Propagation Delay vs. Capacitive Load Propagation Delay (ns) Propagation Delay (ns) 1Channel, VGH1 = VGH2 = 27V, VGL = −7V RL = 5k, f = 20kHz, Duty Cycle = 50% 150 100 50 0 3.1 3.6 4.1 1Channel, VGH1 = VGH2 = 27V, VGL = −7V RL = 5k, f = 20kHz, Duty Cycle = 50% 200 150 100 50 0 0.1 0.6 1.1 1.6 2.1 2.6 3.1 3.6 4.1 0.1 0.6 Capacitive Load (nF) 1.6 2.1 2.6 3.1 3.6 4.1 VOL Output Voltage vs. Load Current -6.70 VGH1 = VGH2 = 27V, VGL = −7V, VINX = 5.5V 27.05 1.1 Capacitive Load (nF) VOH Output Voltage vs. Load Current 27.10 -6.75 27.00 Output Voltage (V) Output Voltage (V) 2.6 tPHL Propagation Delay vs. Capacitive Load 250 200 26.95 26.90 26.85 26.80 VGH1 = VGH2 = 27V, VGL = −7V, VINX = 0V -6.80 -6.85 -6.90 -6.95 26.75 -7.00 26.70 0 2.5 5 7.5 10 Load Current (mA) DS8900-06 2.1 Capacitive Load (nF) Capacitive Load (nF) 250 1.6 September 2011 12.5 15 0 2.5 5 7.5 10 12.5 15 Load Current (mA) www.richtek.com 7 RT8900 VGH1 Quiescent Current vs. Temperature VGH2 Quiescent Current vs. Temperature 20 VIN = 5.5V, VGL = −7V, VGH1 = VGH2 = 27V 18 0.4 Quiescent Current (µA) Quiescent Current (µA) 0.5 0.3 0.2 0.1 VIN = 5.5V, VGL = −7V, VGH1 = VGH2 = 27V 16 14 12 10 8 6 4 2 0 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Temperature (°C) www.richtek.com 8 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Temperature (°C) DS8900-06 September 2011 RT8900 Application information RT8900 is an 8-channel level shifter operating at high supply and maintaining low power consumption. The device requires three supply voltages VGH1, VGH2 and VGL to supply all logic levels for outputs. VGH1 applies to the high output level for VOUT0 to VOUT6 and VGH2 is for VOUT7 to VOUT8. VGL sets the low output level for all channels. VGH2 must always be larger than or equal to VGH1. Logic input signals at VIN0 to VIN7 operate from supply voltages from 0V to 6V.Connect the unused logic input signal to high or low logic level. RT8900 with high driving capability is ideal for TFT LCD panels. In general applications, the input signal for VIN0 to VIN7 supplied from the timing controller of TFT LCD system; the panel operates in high voltage supplied from the output signal VOUT0 to VOUT7. RT8900 translates the timing controller's signal into high-low level signal to drive the panel. Fast rising / falling time and low propagation delay makes RT8900 being suitable for driving TFT LCD panels. DS8900-06 September 2011 www.richtek.com 9 RT8900 Outline Dimension D L E1 E e A2 A A1 b Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 1.000 1.200 0.039 0.047 A1 0.050 0.150 0.002 0.006 A2 0.800 1.050 0.031 0.041 b 0.190 0.300 0.007 0.012 D 6.400 6.600 0.252 0.260 e 0.650 0.026 E 6.300 6.500 0.248 0.256 E1 4.300 4.500 0.169 0.177 L 0.450 0.750 0.018 0.030 20-Lead TSSOP Plastic Package www.richtek.com 10 DS8900-06 September 2011 RT8900 1 1 2 2 DETAIL A Pin #1 ID and Tie Bar Mark Options Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. Dimensions In Millimeters Dimensions In Inches Symbol D2 E2 Min Max Min Max A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A3 0.175 0.250 0.007 0.010 b 0.150 0.300 0.006 0.012 D 3.900 4.100 0.154 0.161 Option 1 2.650 2.750 0.104 0.108 Option 2 2.100 2.200 0.083 0.087 E 3.900 4.100 0.154 0.161 Option 1 2.650 2.750 0.104 0.108 Option 2 2.100 2.200 0.083 0.087 e L 0.500 0.350 0.020 0.450 0.014 0.018 W-Type 20L QFN 4x4 Package Richtek Technology Corporation Richtek Technology Corporation Headquarter Taipei Office (Marketing) 5F, No. 20, Taiyuen Street, Chupei City 5F, No. 95, Minchiuan Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Tel: (8862)86672399 Fax: (8862)86672377 Email: [email protected] Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek. DS8900-06 September 2011 www.richtek.com 11