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SMB118 датащи(PDF) 8 Page - Summit Microelectronics, Inc. |
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SMB118 датащи(HTML) 8 Page - Summit Microelectronics, Inc. |
8 / 1 page SMB118/218 Summit Microelectronics, Inc 2107 3.0 10/15/2008 8 PIN DESCRIPTIONS (CONT.) Pin Number Pin Name Pin Type Pin Description SMB118: nRESET Output SMB118: Reset Output. Releases with programmable delay after all selected outputs are valid (see UV/OV trip points). Open-drain active low output. 25 SMB218: VDD_CAP Power SMB218: VDD Bypass – Connect to VDD bypass capacitor with 10uF capacitor. SMB118: VDD_CAP Power SMB118: VDD Bypass – Connect to VDD bypass capacitor with 10uF capacitor. 26 SMB218: VDDP Power SMB218: Power Input for the Boost Converter. Connect to +2.7V to +6.0V voltage source. Must be at same voltage as source of PFET for the Boost converter. 27 VBATT Power Power Input for Controller. Connect to +2.7V to +6.0V voltage source Bypass with a 0.1uF ceramic capacitor close to the pin 28 DRVL1 Output Boost converter 1 low-side drive – Connect to NFET gate 29 FB1 Input Boost converter 1 feedback pin – Connect to external resistor divider 30 CSH1 Input Boost converter 1 current sense high – Connect to high side of sense resistor. This input is used to Kelvin sense the voltage across the current sense resistor. 31 CSL1 Input Boost converter 1 current sense low – Connect to low side of sense resistor. This input is used to Kelvin sense the voltage across the current sense resistor. 32 COMP1 Input Boost converter 1 compensation pin – Connect to R/C compensation network 33 PCHSEQ1 Output P-Channel MOSFET sequencing pin. Connect to PFET gate for Boost channel on/off and sequencing. Internally connected to a 100uA current sink to pull PFET gate resistor from VDD to GND to enable sequencing. Tie to GND when unused. 34 BFETDRV Output Battery Charger FET Drive – Connects to gate of a PFET to control battery charging current 35 BSENSE Input Battery Voltage Sense – Connect directly to positive terminal of battery 36 TSENSE Input Battery Temperature Sense – Connect to “Temp” terminal of battery pack. This pin injects a programmable current into the NTC thermistor internal to the battery pack and measures the resulting current to detect temperatures. Place a 24.9K resistor, for 10K NTC, from this node to ground. 37 BCSH Input Charge Current Sense – Connect to high-side of charge current sense resistor. This input is used to Kelvin sense the voltage across the current sense resistor. 38 LDOIN2 Power LDO Power Input – Connect to +2.7V to +6.0V to supply internal LDO 39 LDOOUT2 Input/ Output LDO Output/Feedback 40 SW4 Input/ Output Buck converter 4 switch pin – Connect to drains of NFET 41 VIN4 Power Buck Converter 4 Power – Connect to +2.7V to +6.0V to supply internal PFET 42 DRVL4 Output Buck converter 4 low-side drive – Connect to NFET gate 43 BCSL Input Charge Current Sense resistor. Connect to low side of charge current sense resistor. Do not attach to battery node at any other point. 44 FB4 Input Buck converter 4 feedback pin – Connect directly to output 45 COMP4 Input Buck converter 4 compensation pin – Connect to R/C compensation network 46 SHDN Input Shutdown – When high this input disables all functions of the SMB118 for low power operation. When voltage is present on the DOCK_DC input the part will exit the shutdown state, regardless of the state of the shutdown input. 47 SDA Input/ Output I 2C Data 48 SCL Input I 2C Clock PAD (49) DRVGND Ground Power Ground – Internally connect to under package pad. Connect to isolated PCB ground plane/flood PLEASE NOTE: The SMB118 has entered End-of-Life. |
Аналогичный номер детали - SMB118 |
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Аналогичное описание - SMB118 |
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