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UPD16732BN Datasheet(PDF) 11 Page - NEC |
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UPD16732BN Datasheet(HTML) 11 Page - NEC |
11 / 24 page Data Sheet S13972EJ3V0DS00 11 µµµµ PD16732A, 16732B 9. CURRENT CONSUMPTION REDUCTION FUNCTION The µ PD16732A and 16732B have a low power control function (LPC) which can switch the bias current of the output amplifier between two levels and a bias control function (Bcont) which can be used to finely control the bias current. <Low power control function (LPC)> The bias current of the output amplifier can be switched between two levels using this pin. (Bcont: Open) LPC = H or Open: Normal power mode LPC = L: Low power mode The VDD2 of static current consumption can be reduced to two thirds of that in normal mode. Input a stable DC current (VDD1/VSS1) to this pin. <Bias Current Control Function (Bcont)> It is possible to fine-control the current consumption by using the bias current control function (Bcont pin). When using this function, connect this pin to the stabilized ground potential (VSS2) via an external resistor (REXT). When not using this function, leave this pin open. Refer to the table below for the percentage of current regulation when using the bias current control function. Figure9 −−−−1. Bias Current Control Function (Bcont) PD16732A,16732B µ Bcont LPC REXT H/L VSS2 Refer to the table below for the percentage of current regulation when using the bias current control function. Talbe9 −−−−1. Current Consumption Regulation Percentage Compared to Normal Mode Current Consumption Regulation Percentage REXT LPC = H LPC = L ∞ (Open) 100 % 65 % 50 k Ω 110 % 70 % 20 k Ω 115 % 80 % 10 k Ω 120 % 85 % Remark The above current consumption regulation percentages are not product-characteristic guaranteed as they are based on the results of simulation. Caution Because the low-power and bias-current control functions control the bias current in the output amplifier and regulate the over-all current consumption of the driver IC, when this occurs, the characteristics of the output amplifier will simultaneously change. Therefore, when using these functions, be sure to sufficiently evaluate the picture quality. VDD1 = 3.3 V VDD2 = 8.7 V LPC = 3.3 V/0 V 5 5 |
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