TB62707F

TB62707F TOSHIBA Bi−CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC TB62707F 8BIT PIPO (Pallalel In , Pallalel Out) CONSTANT CURRENT DRIVERS The TB62707F is specifically designed for LED and LED DISPLAY constant current drivers. This constant current output is able to set up external resistor (IOUT = 90 mA MAX.). This IC is monolithic integrated circuit designed to be used together with Bi−CMOS process. The devices consist of 8bit latches, AND−GATE and Constant Current Drivers. FEATURES Constant Current Output: Can set up all output current with one resistor for 5 to 90mA. Constant Output Current Matching: OUTPUT−GND VOLTAGE ≥ 0.4 [V] ≥ 0.7 [V] CURRENT MATCHING ±6.0 [%] ±6.0 [%] OUTPUT CURRENT 5~40 mA 40~90 mA Weight: 0.32 g (typ.) 5 V CMOS Compatible Input Package: SSOP24−P−300 1 2006-06-13 TB62707F PIN CONNECTION (Top view) BLOCK DIAGRAM TIMING DIAGRAM Note: Latches are level sensitive, not rising edge sensitive and not synchronous CLOCK. Input of LATCH −terminal to "H" level, data passes latches, and input to "L" level, data hold latches. Input of ENABLE −terminal to "H" level, all output (OUT0~7) do off. 2 2006-06-13 TB62707F TERMINAL DESCRIPTION PIN No. 1 2 4~11 3 12 13 14~21 22 23 24 PIN NAME LATCH FUNCTION Input terminal of a data strobe. Latches passes data with "H" level input of LATCH −terminal, and hold data with "L" level input. ENABLE IN0~7 NC L−GND P−GND OUT0~7 P−GND REXT VDD Input terminal of output enable. All outputs (OUT0~7) do off with "H" level input of ENABLE −terminal, and do on with "L" level input. Input terminal of a parallel−data for latches. No connection. GND terminal for controll logic. GND terminal for output constant current drivers. Output terminals. GND terminal for output constant current drivers. Input terminal of connects with a resister for to set up all output current. 5V Supply voltage terminal TRUTH TABLE IN0~7 L H L H L H H LATCH L L H H ENABLE L L L L L L H OUT0~7 OFF OFF OFF ON OFF ON OFF EQUIVALENT CIRCUIT OF INPUTS 1. ENABLE terminal 2. LATCH terminal 3. IN0~7 terminal 3 2006-06-13 TB62707F ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC Supply Voltage Input Voltage Output Current Output Voltage GND Terminal Current Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC VIN IO VO IGND PD Topr Tstg RATING 7.0 −0.3~VDD + 0.3 90.0 −0.3~17.0 720 780 (Note) −40~85 −55~150 UNIT V V mA V mA mW °C °C Note: On PCB (50 × 50 × 1.6 mm Cu 30% Glass Epoxy PCB) Ambient temperature delated above 25°C in the proportion of 6.66 mW / °C RECOMMENDED OPERATING CONDITION (Ta = −40~85°C unless otherwise noted) CHARACTERISTIC Supply Voltage Output Voltage SYMBOL VDD VO IOUT Output Current IOH IOL VIH Input Voltage VIL ― DC 1 circuit SERIAL−OUT SERIAL−OUT ― TEST CONDITION ― ― MIN 4.5 ― 5.0 ― ― 0.7 VDD −0.3 100 TYP. 5.0 ― ― ― ― ― ― ― MAX 5.5 15.0 88 1.0 −1.0 VDD +0.3 0.3 VDD ― UNIT V V mA mA mA V LATCH Pulse Width tw LAT tw LAT tw IN tw IN tw EN t w EN VDD = 4.5 V 100 4500 4500 4500 4500 100 100 ON PCB, Ta = 85°C ― ― ― ― ― ― ― ― ― ― ― ― ― ― ― ― 0.60 ns INPUT Pulse Width ns ENABLE Pulse Width Set−Up Time for LATCH Hold Time for LATCH Power Dissipation ns ns ns W tsetup (L) thold (L) PD 4 2006-06-13 TB62707F ELECTRICAL CHARACTERISTICS (VDD = 5.0 V, Ta = 25°C unless otherwise noted) CHARACTERISTIC "H" Level Input Voltage "L" Level Output Leakage Current Output Voltage SERIAL−OUT VIL IOH VOL VOH IOL1 IOL2 Current Skew Output Current 2 Current Skew Supply Voltage Regulation Reference Voltage ∆ IOL1 IOL3 IOL4 ∆ IOL2 % / VDD Vref IDD (off) 1 Supply Current "OFF" IDD (off) 2 IDD (off) 3 IDD (on) 1 Supply Current "ON" IDD (on) 2 ― ― ― ― ― ― ― ― ― ― ― ― ― ― ― ― ― VOH = 15.0 V IOL = 1.0 mA IOL = −1.0 mA VCE = 0.7 V VCE = 0.4 V IO = 40 mA, VCE = 0.4 V VCE = 1.0 V VCE = 0.7 V IO = 75 mA VCE = 0.7 V REXT = 620 Ω (Include skew) REXT = 620 Ω REXT = 330 Ω (Include skew) REXT = 330 Ω ― SYMBOL VIH TEST CIR− CUIT ― TEST CONDITION ― MIN 0.7 VDD GND ― ― 4.6 35.7 68.0 ― 64.2 63.8 ― ― ― ― 6.0 12.0 8.0 18.0 TYP. ― ― ― ― ― 42.0 80.0 ±1.5 75.5 75.0 ±1.5 +5.0 1.26 0.6 8.0 15.0 13.0 25.0 MAX VDD 0.3 VDD 10 0.4 ― 48.3 92.0 ±6.0 86.8 86.2 ±6.0 ― ― 1.2 10.0 18.0 20.0 mA 35.0 mA V UNIT µA V mA mA % mA mA % %/V V Output Current 1 REXT = 470 Ω, Ta = −40~85°C ― REXT = OPEN, OUT0~7 = off VDD = 4.5 V, ENABLE = "H" REXT = 500 Ω, OUT0~7 = off VDD = 4.5V , ENABLE = "H" REXT = 280 Ω, OUT0~7 = off VDD = 4.5V, ENABLE = "H" REXT = 500 Ω, OUT0~7 = on VDD = 4.5 V, ENABLE = "L" REXT = 280 Ω, OUT0~7 = on VDD = 4.5 V, ENABLE = "L" 5 2006-06-13 TB62707F SWITCHING CHARACTERISTICS (Ta = 25°C, unless otherwise noted) CHARACTERISTIC IN−OUTn Propagation Delay LATCH −OUTn Time ("L" to "H") ENABLE −OUTn IN−OUTn Propagation Delay LATCH −OUTn Time ("H" to "L") ENABLE −OUTn IN Pulse Width LATCH ENABLE Set−up Time for LATCH & CLOCK Hold Time for LATCH & CLOCK Output Rise Time Output Fall Time L−H H−L L−H H−L SYMBOL TEST CIR− CUIT ― CONDITION MIN ― tpLH ― ― ― tpHL ― VDD = 5.0 V VCE = 0.4 V VIH = VDD VIL = GND REXT = 500 Ω IOUT = 40 mA VL = 3.0 V R L = 65 Ω CL = 10.5 pF ― ― ― ― ― ― ― ― ― 200 200 TYP. 600 600 600 300 300 300 2000 25 2000 25 25 0 0 1000 1000 MAX 1200 1200 1200 1200 1200 1200 3500 50 3500 50 50 30 30 1200 1200 ns ns ns ns UNIT tw IN, IN tw LAT, LAT tw ENA, EN tsetup LAT ― ― ― ― ― ― ― ― thold LAT tor tof ns ns ns 6 2006-06-13 TB62707F DC CHARACTERISTICS TEST CIRCUIT AC CHARACTERISTICS TEST CIRCUIT PRECAUTIONS for USING Utmost care is necessary in the design of the output line, VCC (VDD) and GND (L−GND, P−GND) line since IC may be destroyed due to short−circuit between outputs, air contamination fault, or fault by improper grounding. 7 2006-06-13 TB62707F TIMING WAVEFORM 1. INn−OUTn 2. ENABLE −OUTn 3. LATCH −OUTn 8 2006-06-13 TB62707F 9 2006-06-13 TB62707F LED DRIVER TB6270X SERIES APPLICATION NOTE [1] Output current (IOUT) IOUT is set by the external resistor (R−EXT) as shown in Fig.1. [2] Total supply voltage (VLED) This device can operate 0.4~0.7V (VO). When a higher voltage is input to the divide, the excess voltage is consumed inside the device, that leads to power dissipation. In order to minimize power dissipation and loss, we would like to recommended to set the total supply voltage as shown below. VLED (Total supply voltage) = VCE (Tr Vsat) + Vf (LED Forward voltage) + VO When the total supply is too high considering the power dissipation of this divide, an additional R can decrease the supply voltage (VO). Moreover, Resistor R is calculable by the lower formula. V LED VF of LED VO (min .) IO(max.) * Nu mber of CH s(max .) Moreover, IC operation may become unstable by long wiring. It recommends arranging IC and LED to near. APPLICATION [3] Pattern layout This device owns only one ground pin that means signal ground pin and power ground pin are common. If ground pattern layout contains large inductance and impedance and the voltage between ground and LATCH , CLOCK terminals exceeds 2.5V by switching noise in operation, this device may miss−operate. So we would life you to pay attention to pattern layout to minimize inductance. 10 2006-06-13 TB62707F Package Dimensions W eight: 0.32 g (typ.) 11 2006-06-13 TB62707F Notes on Contents 1. Block Diagrams Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes. 2. Equivalent Circuits The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. 3. Timing Charts Timing charts may be simplified for explanatory purposes. 4. Application Circuits The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. 5. Test Circuits Components in the test circuits are used only to obtain and confirm the device characteristics. These components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment. 12 2006-06-13 TB62707F IC Usage Considerations Notes on Handling of ICs (1) The absolute maximum ratings of a semiconductor device are a set of ratings that must not be exceeded, even for a moment. Do not exceed any of these ratings. Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. Use an appropriate power supply fuse to ensure that a large current does not continuously flow in case of over current and/or IC failure. The IC will fully break down when used under conditions that exceed its absolute maximum ratings, when the wiring is routed improperly or when an abnormal pulse noise occurs from the wiring or load, causing a large current to continuously flow and the breakdown can lead smoke or ignition. To minimize the effects of the flow of a large current in case of breakdown, appropriate settings, such as fuse capacity, fusing time and insertion circuit location, are required. If your design includes an inductive load such as a motor coil, incorporate a protection circuit into the design to prevent device malfunction or breakdown caused by the current resulting from the inrush current at power ON or the negative current resulting from the back electromotive force at power OFF. IC breakdown may cause injury, smoke or ignition. Use a stable power supply with ICs with built-in protection functions. If the power supply is unstable, the protection function may not operate, causing IC breakdown. IC breakdown may cause injury, smoke or ignition. Do not insert devices in the wrong orientation or incorrectly. Make sure that the positive and negative terminals of power supplies are connected properly. Otherwise, the current or power consumption may exceed the absolute maximum rating, and exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. In addition, do not use any device that is applied the current with inserting in the wrong orientation or incorrectly even just one time. Carefully select external components (such as inputs and negative feedback capacitors) and load components (such as speakers), for example, power amp and regulator. If there is a large amount of leakage current such as input or negative feedback condenser, the IC output DC voltage will increase. If this output voltage is connected to a speaker with low input withstand voltage, overcurrent or IC failure can cause smoke or ignition. (The over current can cause smoke or ignition from the IC itself.) In particular, please pay attention when using a Bridge Tied Load (BTL) connection type IC that inputs output DC voltage to a speaker directly. (2) (3) (4) (5) Points to Remember on Handling of ICs (1) Heat Radiation Design In using an IC with large current flow such as power amp, regulator or driver, please design the device so that heat is appropriately radiated, not to exceed the specified junction temperature (Tj) at any time and condition. These ICs generate heat even during normal use. An inadequate IC heat radiation design can lead to decrease in IC life, deterioration of IC characteristics or IC breakdown. In addition, please design the device taking into considerate the effect of IC heat radiation with peripheral components. Back-EMF When a motor rotates in the reverse direction, stops or slows down abruptly, a current flow back to the motor’s power supply due to the effect of back-EMF. If the current sink capability of the power supply is small, the device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. (2) 13 2006-06-13 TB62707F RESTRICTIONS ON PRODUCT USE • The information contained herein is subject to change without notice. 021023_D 060116EBA • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc. 021023_A • The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk. 021023_B • The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_Q • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. 021023_C • The products described in this document are subject to the foreign exchange and foreign trade laws. 021023_E 14 2006-06-13