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RT9465 Datasheet(PDF) 9 Page - Richtek Technology Corporation |
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RT9465 Datasheet(HTML) 9 Page - Richtek Technology Corporation |
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9 / 28 page  RT9465 9 DS9465-00 May 2017 www.richtek.com © Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Application Information Junction Temperature Monitor The RT9465 supports a junction temperature monitor to optimize the charge current for applications. The monitoring is split in to 16 levels from a 4-bit ADC to I2C register as shown in Table 2. In addition, the RT9465 provides two programmable monitoring levels by I2C serial interface to report the temperature warning and release flags, TJ_WARNING and TJ_RELEASE as shown in Table 2. If the junction temperature rises above the warning threshold (TJ_WARNING), the event is asserted to an interrupt. If the junction temperature falls under the release threshold (TJ_RELEASE), the event is asserted to an interrupt. Table 2. Reported Register Temperature 0000 < 60 degree (TJ_RELEASE default) 0001 > 60 degree 0010 > 64 degree 0011 > 68 degree (TJ_WARNING default) 0100 > 72 degree 0101 > 76 degree 0110 > 80 degree 0111 > 84 degree 1000 > 88 degree 1001 > 92 degree 1010 > 96 degree 1111 > 100 degree 1100 > 104 degree 1101 > 108 degree 1110 > 112 degree 1111 > 116 degree Minimum Input Voltage Regulation (MIVR) : The RT9465 features input voltage MIVR function to prevent input voltage drop due to insufficient current provided by the adaptor or USB input. If MIVR function is enabled, the input voltage decreases when the over-current of the input power source occurs and is regulated at a predetermined voltage level which can be set from 3.9V to 13.4V with the step of 100mV by I2C interface to MIVR register. Average Output Current Regulation (AOCR) : The RT9465 proposed output current AOCR function to limit charge current. The AOCR senses and averages the inductor current in to the regulation loop for constant current charge. If AOCR function is enabled, the output current increase when the over-current of the charge occurs and is regulated at a predetermined current level which can be set from 0.6A to 3A with the step of 100mA by I2C interface to AOCR register. |
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