DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 6

Technical content

UNISONIC TECHNOLOGIES CO., LTD UD8973 Preliminary CMOS IC w w w . u n i s o n i c . c o m . t w 1 of 6 Copyright © 2017 Unisonic Technologies Co., Ltd QW-R140-006.a LED DISPLAY CONTROL CIRCUIT WITH GHOSTING EFFECT ELIMINATION  DESCRIPTION UTC UD8973 is a ghosting effect elimination and control circuit designed for LED display. The device has constant charge absorbing circuit which can eliminate ghosting effect, improve refresh rate, and also can eliminate the caterpillar phenomena caused by LED leakage current and short circuit. The short circuit and over current protection make the device useful in application.  FEATURES * Integrated ghosting effect elimination * Greatly improve refresh rate * Eliminate the caterpillar phenomena caused by LED leakage current and short circuit * Short-circuit and over-current protection SOP-8  ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing UD8973L-S08-R UD8973G-S08-R SOP-8 Tape Reel Note: xx: Output Voltage, refer to Marking Information.  MARKING

UD8973 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 2 of 6 www.unisonic.com.tw Q W - R 1 4 0 - 0 0 6 . a  PIN CONFIGURATION  PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION

1 GND Ground

2 G1 Left channel control signal input

3 V CC Supply voltage

4 G2 Right channel control signal input

5, 6 D2 Right channel output 7, 8 D1 Left channel output

UD8973 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 3 of 6 www.unisonic.com.tw Q W - R 1 4 0 - 0 0 6 . a  ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage V DD 0~6.5 V Gate Voltage V G V DD V Power Dissipation P D 0.7 W Storage Temperature Range T STG -55 ~ +150 °C Operating Temperature Range T OPR -40 ~ +85 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.  THERMAL INFORMATION PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θJA 178 °C/W  ELECTRICAL CHARACTERISTICS (TJ=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Current I DD V DD=5V 220 uA VDD=5V, IO=1A 100 m ΩSwitch On-Resistance R DS VDD=3.8V, IO=1A 110 m Ω Output Current I O V DD=5V 3.0 A Short-Circuit Current SI TEST CIRCUIT 1 50 mA

UD8973 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 4 of 6 www.unisonic.com.tw Q W - R 1 4 0 - 0 0 6 . a  TEST CIRCUIT

UD8973 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 5 of 6 www.unisonic.com.tw Q W - R 1 4 0 - 0 0 6 . a  TYPICAL APPLICATION CIRCUIT VCC Cx UTC UD8973 NM1 NM2 PM2 PM1 0D5026A U74HC138 CX are decoupling capacitors of UTC which improve the reliability of UTC application. Considering different conditions, CX can range from 0.1uF to 1uF. Note:

UD8973 Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD 6 of 6 www.unisonic.com.tw Q W - R 1 4 0 - 0 0 6 . a  TYPICAL APPLICATION CIRCUIT (Cont.) A B C HA1 1 HB1 2 HC1 3 EN138L 4 HD1 5 HE2 6

15 HSEL1

14 HSEL2

13 HSEL3

12 HSEL4

11 HSEL5

10 HSEL6

9 HSEL7

7 HSEL8

A B C HA1 1 HB1 2 HC1 3 EN138L 4 HD2 5 HE2 6

15 HSEL9

14 HSEL10

13 HSEL11

12 HSEL12

11 HSEL13

10 HSEL14

9 HSEL15

7 HSEL16

2 HD2

4 HE2

A B C HA1 1 HB1 2 HC1 3 EN138L 4 HD1 5 HE1 6

15 HSEL17

14 HSEL18

13 HSEL19

12 HSEL20

11 HSEL21

10 HSEL22

9 HSEL23

7 HSEL24

A B C HA1 1 HB1 2 HC1 3 EN138L 4 HD2 5 HE1 6

15 HSEL25

14 HSEL26

13 HSEL27

12 HSEL28

11 HSEL29

10 HSEL30

9 HSEL31

7 HSEL32

(3) 32 Bits U74HC138 Connection 1. EN138L can be connected to U74HC138 outputs or ground. 2. All above only describe connections of signal A, B, C, D and E. U74HC138’s and other devices’ decoupling capacitors C X should be connected with power supply and ground as normal. Note UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.