Others 8-Bit Shift Register Latch Cotant Driver IC Overview The is a semiconductor integrated circuit which iorporates a 8-bit shift register, a latch driver and a cotant current driver to satisfy the demand for equalization of LED panel brightness. It also iorporates the serial-in and serial-out/parallel-out futio. It employs the Bi-CMOS process : The 8-step shift register block and latch block coist of CMOS while the 8-step parallel driver block is bipolar. Features Serial-in, serial-out/parallel-out Cascade connection possible Cotant current output (0 to 100 able to be set by one external resistor) -forced ON/OFF terminal attached (EN) Input/ CMOS compatible Application LED panel drive Block Diagram Gate Control Sig. Latch Control Sig. Data Input Clock Input 0.4±0.5 (0.4) 1.7 0.1±0.1 1 3 4 5 6 7 8 9 10 1 8 Cotant Shift Register Cotant Gate Latch 5.5±0.3 7.6±0.3 (0.4) 19 18 17 16 15 14 13 1 11 + 0.1 0. 0.05 0.9±0.5 0.9±0.5.05±0. -pin SOP Package (SOP0-P-0300A) Maintenae/ Shift Register Cotant Shift Register Set. Data Unit : mm Maintenae/ iludes following four Product lifecycle stage. (planed maintenae type, maintenae type, planed discontinued typed, discontinued type) 1.63±0.3 External Resistor 1
Others Absolute Maximum Rating (Ta = 5 C) Parameter Symbol Rating Unit Supply voltage voltage current Power dissipation* Operating ambient temperature Storage temperature V CC V O I O P D T opr T stg * For printed board SM, it decreases with rate of 10.4 mw/ C from Ta = 5 C. Recommended Operation Range (Ta=5 C) Operating supply voltage V CC 0 to + 7.0 V 0 to + 14 V 150 1.8 W to + 85 55 to + 150 Parameter Symbol Range Electrical Characteristics (V CC =,Ta=5 ± C) Note) V CC= unless otherwise specified. 4. to 5. I OI Parameter Symbol Condition min typ max Unit Input voltage Positive direction V T+ V SOUT = 0.1, V CC 0.1V { I SOUT = µa 0.3 CC 0.7V CC V Negative direction V T I O (n) = 10µA, 90 { V O (n) = 0.6V I ref =.5 0.V CC 0.5 CC V Input current I IH V 1H = 5. 5 µa I IL V 1L = 5 µa voltage (SOUT) V OH I OH = 0.4 4.0 V V OL I OL = 1.6 0.5 V current 1 (n) I OI V O (n) = 0. 100 current (n) V CC = 5., I ref = 1 83 117 current error between bits DI O V O (n) = 1. ±6 % leak current Supply current Clock frequey Input pulse width Setting-up time Holding time Clock pulse rise time I OLK V O= 14V ( OFF) 5 I CC1 I ref = 0 I CC V CC=5. I ref =.5 I CC3 f t w t su t h t r t f Total Driver OFF ON Maintenae/ I ref =.5 Input Duty 40 to 60% V CC=5. R L=50Ω C L=15pF Clock pulse fall time 500 Maintenae/ iludes following four Product lifecycle stage. (planed maintenae type, maintenae type, planed discontinued typed, discontinued type) 15 10 30 500 C C µa MH Z
Others Pin Descriptio Pin No. Symbol Pin name Description 1 3 4 5 DGND Digital ground Serial data input Clock input Strobe input Digital ground It is the serial data input terminal for shift register. The value of shift register shifts at the rising edge of clock input. Setting the input to "H" forwards the data of shift register to the latch. When the input is set to "L", even if the value of shift register changes, the value of latch is not changed. It outputs signals by using the polarity opposite to that of data taken into the 7,8 10,11 n latch. For example, when the value of serial input is "H", the output becomes Driver output "L" level and the output is turned on. The output takes open collector form of 13,14 16 NPN traistor. 6 9,1 PGND ground ground 15 17 EN Enabling input When the EN input is set to "H", all the outputs are turned off, independent of condition of shift register or latch driver. 18 SOUT Serial data output It is the terminal which performs the serial-output of data inputted from the. It connects the external resistor between RC and GND and sets the current of output block. * current calculation : ** RC terminal setting calculation : 19 RC Cotant current setting input V CC (V) V CC (V) I O (n) I RC (A) R RC (Ω) + 90 (A) R RC (Ω) +180 1 V CC (V) or R RC 180 (Ω) I RC (A) V CC V CC Supply terminal * Calculation example 5 ** Calculation example 1 5 I V CC = O (n) 910 + 90 R V CC = RC 0.005 180 R RC = 910Ω I O (n) 100 I RC = 0.005A R RC 910 (Ω) Maintenae/ Maintenae/ iludes following four Product lifecycle stage. (planed maintenae type, maintenae type, planed discontinued typed, discontinued type) 3
Others Application Circuit LED Panel Block Diagram SOUT (18) Logic input () (3) ST B (4) EN (17) Input EN H L L L H (5) 0 Fution Table (Note) n n n n Characteristics Curve Power Dissipation PD (mw) 1600 1400 180 10 1000 800 718 600 400 0 P D Ta (7) 1 O n H Glass epoxy printed board (50mm 50mm t0.8mm) Rthj-a=97.7 C/W PD=180 mw (5 C) Single unit Rthj-a=174.1 C/W PD=718 mw (5 C) (8) H (10) 3 m 7 m-1 6 H SOUT 6 6 6 (16) 7 LED setting circuit VCC () DGND (1) PGND (6) (9) (1) (15) RC (19) GND LED GND LED (Note) H : High level, L : Low level, : H or L m, n : H or L. However, for n, "H"= OFF, "L"= ON. : Shift from L to H, : Shift from H to L : No change VLED Scan input Maintenae/ Maintenae/ iludes following four Product lifecycle stage. (planed maintenae type, maintenae type, planed discontinued typed, discontinued type) 0 0 5 50 75 100 15 150 Ambient Temperature Ta ( C) 4
Others Timing Chart 1.Input timing.tramission delay time.. tsu() th() 90% 90%..... 10% 10% tr() tsu() 1/f twh () twl().. tw() tf() tsu() (VIL=,VIH= 5.).. th() th() EN n VOH VOL tplh 50% tphl (VIL=,VIH= 5.).. tplh 50% 50% 50% Maintenae/ Maintenae/ iludes following four Product lifecycle stage. (planed maintenae type, maintenae type, planed discontinued typed, discontinued type) tphl 5
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