OUTPUT CURRENT CORRECTION CIRCUIT, CAPABLE OF STABLY CORRECTING AN OUTPUT CURRENT IN AN LED DRIVE DEVICE
Also Figure 1 shows a correction circuit output current of the existing method. Also Figure 2 shows a the comparator of alarm current by correction circuit according to one embodiment of the present invention. Major part of the drawings an interlayer used to coat the described sign 200: switch R1-R4: output current correction for producing The present invention refers to LED drive device points output current in that the output current used to relates to correction circuit. LED drive device used in a plurality of blocks (IC or each circuit or the like) for each part the variations in the characteristics due to current correction an output for current correction circuit is provided. As output current correction circuit diagram of the existing method also Figure 1 shows a, is mounted in addition to building blocks each, plurality of resistor (R1-R4) and a capacitor (C1) and said resistance (R1-R4) jumper for connection to the block (100) and configured in a, jumper (100) said assembly part a the resistor having resistance value on a block-by-block consists of lock is connected to. However, the comparator of alarm current by the calibration by jumper of the existing method, a jump improve productivity is communicated with the discharge line, is completed and the second step is to solder a, incomplete solidly a circuit caused adjust the duty ratio of the value as a new time value inputted. The present invention refers to operation by a simple operation, thereby compensating airflow responding to an abnormal mass output current output that can be current correction circuit. A functional block of a device the present invention refers to LED drive is connected, said block arranged in the device for error correcting according to variations in the characteristics of an a pair of resistance; and a pair of said block and said is connected between resistance, a pair of said each resistance is in contact with and separated from the terminals, a pair of resistance said block and said one of the calibration curves is to be connected includes operable switches. Hereinafter, of the present invention preferred embodiment (are) to. as further described reference to accompanying drawing. Also Figure 2 shows a the comparator of alarm current by correction circuit according to one embodiment of the present invention is. Also from a 2, each block of the plurality of resistor connectable (R1-R4) and a capacitor (C1) and said resistance (R1-R4) on a block-by-block for switching a large being connected to that (200). it will be composed. Wherein, the comparator of alarm current by conventional correction circuit is different than the other both resistive resistance (R1/R2, R3/R4) pair water even in the, both resistive one of range resistance block a resistor value connected to an output is changed is constituted of configured for correcting current. Therefore, two terminal a switch (200) for said each coupled and a pair of resistance, switch (200) in accordance with an operation of a predetermined direction by an isolation oxide layer at the downstream of the insertion direction resistance. block is connected. For example, said switch (200) is operated to shift a block, a resistance (R1) is connected to be, are + 4mA current correcting value, block, a resistance (R2) is connected when the, current correcting value is + 2mA. These values to a modem aspect one embodiment and block connection state of resistance and only the constitution :-scaled circuit arrangement and exhibiting a can be vary. As such, the present detailed description of the invention in specific in the embodiment but the invention relates to an internal combustion (are), dedicated without within the framework of the present invention numerous modifications are contemplated is the box. In the embodiment of the present invention therefore the described range (are) limited to, is don't the previously set mode, as well as refers to claim claim by equivalent should through the current source circuit is determined. The present invention refers to a simple operation the signal compensation unit compensates for a output current only.. Furthermore, the present invention refers to thereby enhancing efficiency and preventing lead soldering to the solder ball in a contact point is turned off. Furthermore, extremely reduced lets a tire by soldering the present invention refers to the circuit of guaranteeing stability of which can be contact point is turned off. PURPOSE: An output current correction circuit is provided to obtain stability of a circuit by reducing an error rate caused by a welding. CONSTITUTION: An output current correction circuit includes a couple of resistors(R1-R4), and a switch(200). The resistors are coupled to a functional block of an LED driving unit, and correct an error according to a characteristic deviation of components configured in the block. The switch is coupled between the block and the coupled of resistors. Each of terminals is separately coupled to the couple of resistors. The switch operates one of the couple of resistors to be coupled to the block. © KIPO 2008 LED drive is connected a functional block of a device, the block said error correcting according to variations in the characteristics of an device for a pair of resistance; and A pair of said block and said is connected between resistance, a pair of said each resistance is in contact with and separated from the terminals, a pair of resistance said block and said one of the calibration curves is to be connected a operable switches, including output current correction circuit.
