Preliminary Datasheet. Conditions. I OUT = 10 ~ 100 ma, V DS = 0.8V

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1 Macroblock Preliminary Datasheet Features CN MBI5001CN 8 constant-current output channels Constant output current invariant to load voltage change Excellent output current accuracy: between channels: < ±3% (max.), and between ICs: < ±6% (max.) Output current adjusted through an external resistor Constant output current range: ma Fast response of output current, OE (min.): 200 out < 60mA OE (min.): 400 out = 60~100mA 25MHz clock frequency Schmitt trigger input 5V supply voltage P-DIP Weight:1.02g CD CD BI5001CD SOP Weight:0.13g CDW MBI5001CD SOP Weight:0.37g CP CP SSOP Weight:0.07g Current Accuracy Between Channels Between ICs < ±3% < ±6% Conditions I OUT = 10 ~ 100 ma, V DS = 0.8V Product Description is designed for LED display applications. As an enhancement of its predecessor, MBI5001, exploits PrecisionDrive technology to enhance its output characteristics. contains a serial buffer and data latches, which convert serial input data into parallel output format. At output stage, eight regulated current ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of Vf variations. provides users with great flexibility and device performance while using in their system design for LED display applications, e.g. LED panels. Users may adjust the output current from 5 ma to 120 ma through an external resistor R ext, which gives users flexibility in controlling the light intensity of LEDs. guarantees to endure maximum 17V at the output ports. The high clock frequency up to 25 MHz also satisfies the system requirements of high volume data transmission. Macroblock, Inc Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC. TEL: , FAX: info@mblock.com.tw - 1 -

2 Terminal Description Pin Description Pin No. Pin Name Function 1 GND Ground terminal for control logic and current sinks 2 SDI Serial-data input to the shift register 3 CLK 4 LE Clock input terminal for data shift on rising edge Data strobe input terminal Serial data is transferred to the respective latch when LE is high. The data is latched when LE goes low. GND SDI CLK LE OUT 0 OUT 1 OUT 2 OUT VDD R-EXT OE OUT 7 OUT 6 OUT 5 OUT OUT0 ~ OUT 7 Constant current output terminals Output enable terminal 13 OE R-EXT When (active) low, the output drivers are enabled; when high, all output drivers are turned OFF (blanked). Serial-data output to the following SDI of next driver IC Input terminal used to connect an external resistor for setting up output current for all output channels 16 VDD 5V supply voltage terminal Block Diagram OUT0 OUT1 OUT6 OUT7 R-EXT I O Regulator VDD OE 8-Bit Output Driver 8 LE 8-Bit Output Latch GND 8 SDI 8-Bit Shift Register CLK - 2 -

3 Equivalent Circuits of Inputs and Outputs OE terminal LE terminal VDD VDD OE LE CLK, SDI terminal terminal VDD VDD CLK, SDI - 3 -

4 Timing Diagram CLK N = SDI LE OE OUT0 OUT 1 OUT2 OUT3 OFF ON OFF ON OFF ON OFF ON OUT6 OUT 7 OFF ON OFF ON : don t care - 4 -

5 Truth Table CLK LE OE SDI OUT0 OUT5 OUT 7 H L D n D n.. D n - 5. D n - 7 D n-7 L L D n+1 No Change D n-6 H L D n+2 D n + 2. D n - 3. D n - 5 D n-5 X L D n+3 D n + 2. D n - 3. D D n - 5 n-5 X H D n+3 Off D n-5 Maximum Ratings Characteristic Symbol Rating Unit Supply Voltage V DD 0 ~ 7.0 V Input Voltage V IN -0.4 ~ V DD +0.4 V Output Current I OUT +120 ma Output Voltage V DS -0.5 ~ V Clock Frequency F CLK 25 MHz GND Terminal Current I GND 1000 ma Power Dissipation (On PCB, Ta=25 C) Thermal Resistance (On PCB, Ta=25 C) CN type 2.03 CD type 1.46 CDW type 2.03 CP type P D 1.32 CN type CD type CDW type CP type R th(j-a) Operating Temperature T opr -40 ~ +85 C Storage Temperature T stg -55 ~ +150 C W C/W - 5 -

6 Electrical Characteristics Characteristic Symbol Condition Min. Typ. Max. Unit Supply Voltage V DD V Output Voltage V DS OUT0 ~ OUT V Output Current Input Voltage I OUT Test Circuit for Electrical Characteristics ma I OH ma I OL ma H level V IH Ta = -40~85ºC 0.8V DD - V DD V L level V IL Ta = -40~85ºC GND - 0.3V DD V Output Leakage Current V OH = 17.0V and channel off μa Output Voltage V OL I OL = +1.0mA V V OH I OH = -1.0mA V Output Current 1 I OUT1 V DS = 0.5V R ex t = 744 Ω ma Current Skew (between channels) di OUT1 I OUT = 25.26mA V DS 0.5V R ext = 744 Ω - ±1 ±3 % Output Current 2 I OUT2 V DS = 0.6V R ext = 372 Ω ma Current Skew (between channels) di OUT2 I OUT = 50.52mA V DS 0.6V R ext = 372 Ω - ±1 ±3 % Output Current 3 I OUT3 V DS = 0.8V R ext = 186 Ω ma Current Skew (between channels) Output Current vs. Output Voltage Regulation Output Current vs. Supply Voltage Regulation di OUT3 I OUT = 101.0mA V DS 0.8V R ext = 186 Ω - ±1 ±3 % %/dv DS V DS within 1.0V and 3.0V - ±0.1 - % / V %/dv DD V DD within 4.5V and 5.5V - ±1 - % / V Pull-up Resistor R IN (up) OE KΩ Pull-down Resistor R IN (down) LE KΩ Supply Current OFF ON I DD (off) 1 R ext = Open, OUT0 ~ OUT 7 = Off I DD (off) 2 R ext = 744 Ω, OUT0 ~ OUT 7 = Off I DD (off) 3 R ext = 372 Ω, OUT0 ~ OUT 7 = Off I DD (off) 4 R ext = 186 Ω, OUT0 ~ OUT 7 = Off I DD (on) 1 R ext = 744 Ω, OUT0 ~ OUT 7 = On I DD (on) 2 R ext = 372 Ω, OUT0 ~ OUT 7 = On I DD (on) 3 R ext = 186 Ω, OUT0 ~ OUT 7 = On 10.5 ma - 6 -

7 Test Circuit for Electrical Characteristics I DD I IH,IIL OE CLK V DD. OUT0 I OUT LE OUT7 V IH,VIL SDI R - EXT GND I ref - 7 -

8 Switching Characteristics Propagation Delay Time ( L to H ) Propagation Delay Time ( H to L ) Characteristic Symbol Condition Min. Typ. Max. Unit CLK - OUTn t plh ns LE - OUTn t plh ns OE - OUTn t plh ns CLK - t plh ns CLK - OUTn t phl ns LE - OUTn t phl2 Test Circuit for Switching ns OE - OUTn t phl3 Characteristics ns CLK - t phl ns CLK t w(clk) V DD = 5.0 V ns Pulse Width LE t w(l) V DS = 0.8 V V IH = V DD ns OE (@I out < 60mA) t w(oe) V IL = GND ns R Hold Time for LE ext = 372 Ω t h(l) ns V L = 4.0 V Setup Time for LE t su(l) R L = 64 Ω ns Hold Time for SDI t h(d) C L = 10 pf ns Setup Time for SDI t su(d) ns Maximum CLK Rise Time t r ** ns Maximum CLK Fall Time t f ** ns Output Rise Time of Vout (turn off) t or ns Output Fall Time of Vout (turn on) Clock Frequency t of F CLK Cascade Operation ns MHz **If the devices are connected in cascade and t r or t f is large, it may be critical to achieve the timing required for data transfer between two cascaded devices. Test Circuit for Switching Characteristics I DD VIH = 5V Function Generator Logic input waveform V IH,VIL OE CLK LE SDI I ref V DD OUT0. OUT7 R - EXT GND C L I OUT R L C L V L VIL = 0V t r = tf = 10 ns - 8 -

9 Timing Waveform t W(CLK) CLK t su(d) t h(d) SDI t plh, t phl t W(L) LE t h(l) t su(l) OE LOW = OUTPUTS ENABLED HIGH = OUTPUT OFF OUTn t plh1, t phl1 t plh2, t phl2 LOW = OUTPUT ON t W(OE) OE t phl3 t plh3 OUTn 90% 90% 10% 10% t of t or - 9 -

10 Application Information Constant Current In LED display application, provides nearly no variations in current from channel to channel and from IC to IC. This can be achieved by: 1) While I OUT 100mA, the maximum current variation between channels is less than ±3%, and that between ICs is less than ±6%. 2) In addition, the characteristics curve of output stage in the saturation region is flat and users can refer to the figure as shown below. Thus, the output current can be kept constant regardless of the variations of LED forward voltages (Vf). Iout v.s.vout for various Rext Iout (ma) V DS (V)

11 Adjusting Output Current The output current of each channel (I OUT ) is set by an external resistor, R ext. The relationship between I out and R ext is shown in the following figure IOUT (ma) V DS = 1.0V R ext (Ω) Resistance of the external resistor, R ext, in Ω Also, the output current can be calculated from the equation: V R-EXT = 1.253Volt I ref = V rext / R ext if another end of the external resistor R ext is connected to ground. I OUT = I ref x 15 = 1.253Volt / R ext x 15. where R ext is the resistance of the external resistor connected to R-EXT terminal and V R-EXT is the voltage of R-EXT terminal. The magnitude of current (as a function of R ext ) is around 50.52mA at 372Ω and 25.26mA at 744Ω

12 Package Power Dissipation (P D ) The maximum allowable package power dissipation is determined as P D (max) = (Tj Ta) / R th(j-a). When 8 output channels are turned on simultaneously, the actual package power dissipation is P D (act) = (I DD x V DD ) + (I OUT x Duty x V DS x 8). Therefore, to keep P D (act) P D (max), the allowable maximum output current as a function of duty cycle is: I OUT = { [ (Tj Ta) / R th(j-a) ] (I DD x V DD ) } / V DS / Duty / 8, where Tj = 150 C. Iout vs. Duty Cycle at Rth = ( C/W) Iout vs. Duty Cycle at Rth = ( C/W) Iout (ma) % 10% 15% 20% 25% 30% 35% 40% 45% 55% Duty Cycle 60% 65% 70% 75% 80% 85% 90% 95% 100% Iout (ma) % 10% 15% 20% 25% 30% 35% 40% 45% 55% Duty Cycle 60% 65% 70% 75% 80% 85% 90% 95% 100% CN Device Type CD Device Type Iout vs. Duty Cycle at Rth = ( C/W) Iout vs. Duty Cycle at Rth = ( C/W) Iout (ma) % 10% 15% 20% 25% 30% 35% 40% 45% 55% Duty Cycle 60% 65% 70% 75% 80% 85% 90% 95% 100% Iout (ma) % 10% 15% 20% 25% 30% 35% 40% 45% 55% 60% Duty Cycle 65% 70% 75% 80% 85% 90% 95% 100% CDW Device Type CP Device Type Condition:V DS = 1.0V,8 output channels active, Ta is listed in the below legends. Device Type R th(j-a) ( C/W) Note CN CD CDW CP

13 The maximum power dissipation, P D (max) = (Tj Ta) / R th(j-a), decreases as the ambient temperature increases. Max. Power Dissipation at Various Ambient Temperature Power Dissipation Ambient Temperature CN Type: Rth= CD Type: Rth= CDW Type: Rth=61.63 CP Type: Rth= Load Supply Voltage (V LED ) are designed to operate with V DS ranging from 0.4V to 1.0V considering the package power dissipating limits. V DS may be so high as to make P D(act) > P D(max) under higher V LED, for instance, than 5V, where V DS = V LED Vf and V LED is the load supply voltage. In this case, it is recommended to use the lowest possible supply voltage or to set an external voltage reducer, V DROP. A voltage reducer lets V DS = (V LED Vf) V DROP. Resistors or Zener diode can be used in the applications as shown in the following figures. V LED V LED V DROP V DROP Vf Vf V DS V DS

14 Outline Drawings CN Outline Drawing CD Outline Drawing

15 CDW Outline Drawing CP Outline Drawing Package Information Device Type Package Type Weight(g) CN P-DIP CD SOP CDW SOP CP SSOP Note: The unit for the outline drawing is mm

16 This datasheet has been downloaded from: Datasheets for electronic components.