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LM3655 データシート(PDF) 3 Page - National Semiconductor (TI) |
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LM3655 データシート(HTML) 3 Page - National Semiconductor (TI) |
3 / 21 page Table of Contents (Continued) 16.0 Physical Dimensions ................................................................................................................................ 21 6.0 Connection Diagrams and Package Marking 20111502 MicroSMD Top View See NS Package Number TLA25 20111503 MicroSMD Bottom View 7.0 LM3655 Pin Description Pin # Name I/O Type Description A1 CHEMISTRY Input Logic A low input sets the constant voltage and termination voltage to the lower V TERML. A high input sets the constant voltage to the higher voltage level V TERMH. This pin has an internal 100 k Ω pull-down resistor and can be controlled by a peripheral IC or can be tied directly to B+ or GND. A2 HIB_DISB Input Logic This pin is internally pulled up to the CELL pin by a 100K resistor. When this pin is momentarily pulsed low, Hibernate mode is exited, which turns on M4. A3 HIB_EN Input Analog The IC is configured in hibernation mode, when this pin is pulled high after a debounce period. Activating hibernation mode turns off the internal M4 transistor. A4 EXT_PWR_ON Output Logic EXT_PWR_ON is a push-pull output. It is a logic 1 (Radio_B+ voltage level) when the cell has reached the V phone_on level (nominally 3.0V) while the charger is connected and the battery is present. A5 CNTRL Output Analog This output pin regulates the charger current by controlling the base voltage of the external drive and pass transistors Q2 and Q1. B1, C1, C2, D1 RADIO Output Analog This is the power supply terminal for the phone. ALL load current from the cell must be sourced from this pin. B2 NC This pin must be left floating. It needs to be connected to a non connected PCB pad for heat sinking. It cannot be connected to other NC pins. B3, C3, D3 CELL I/O Analog These pins need to be connected to the cell’s positive terminal. B4, C4, D4 V IN Input Analog Input from the pass transistor Q1. B5, C5, D5 GND Ground Ground pin for the circuit and CELL- D2 NC This pin must be left floating. It needs to be connected to a non connected PCB pad for heat sinking. It cannot be connected to other NC pins. E1 DISABLE Input Logic A logic high applied to this input disables the charging. A logic low enables it. This pin has an internal 100 K Ω pull-down resistor and can be left unconnected. www.national.com 3 |
同様の部品番号 - LM3655 |
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同様の説明 - LM3655 |
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