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NCP3800VMNTXG Datasheet(PDF) 3 Page - ON Semiconductor |
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NCP3800VMNTXG Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 15 page NCP3800V http://onsemi.com 3 Table 1. FUNCTIONAL PIN DESCRIPTION Function Pin Description ACOK 5 An open drain device indicates that status of the ac adaptor. Connecting a 10 kW resistor to external pull−up power supply. A high state indicates the adaptor is present. ACFET 4 Gate drive to the series N−FET(s) from the ac adaptor to the system ACIN 6 This Input detects the presence of the ac adaptor which is scaled by a voltage divider to determine if the adaptor is present and whether its output voltage is in the correct range for proper operation. BOOT 17 The bootstrap pin connects to diode and capacitor to provide the drive to the upper gate. CSON 12 The negative side of the output (charge) current sense resistor is connected to this node. This pin also plays the role of battery pack voltage sensing. CSOP 13 The positive side of the output (charge) current sense resistor is connected to this node. CSSN 1 The negative side of the input (adapter) current sense resistor is connected to this node. CSSP 2 The positive side of the input (adapter) current sense resistor is connected to this node. DCIN 20 This pin is the DC input to the chip. It provides bias power for the chip and also for the internal LDO. GND 14 This is the ground reference pin for the chip. ICM 7 The input current monitor provides a voltage signal that is the equivalent total input current or charge current drop across the sense resistor multiplied by a ratio programmed through ChargeOption() register. FETCS 3 Common source pin of the series FET(s) from the AC adaptor to the system and charging circuit LGATE 15 This pin provides the gate drive for the lower FET (synchronous rectifier) gate PGND PAD This pin is the ground reference for the gate drive circuit. PHASE 19 This pin connects to the switch node SCL 9 This pin is an open−drain output for the SMBus Data I/O. An external pullup resistor should be connec- ted according to SMBus specifications. SDA 8 This pin is the SMBus Clock Input. An external pullup resistor should be connected according to SMBus specifications. UGATE 18 This pin provides the gate drive for the upper FET (switch) gate. BATFET 11 Gate drive to the external N−FET connecting the battery to the system rail VDDP 16 This is the regulated supply for the switch drive. It should be bypassed with a >0.1 mF ceramic capacitor. NC 10 Not connected. Recommended to be grounded. Table 2. MAXIMUM RATINGS Rating Symbol Value Unit DCIN, CSSP, CSSN, CSOP, CSON, FETCS to GND PHASE ACFET, UGATE, BOOT, BATFET to GND All other pins Vmax −0.3 to 30 −2.0 to 30 −0.3 to 36 −0.3 to 6.5 V Thermal Resistance, Junction−to−Air qJA 45 °C/W Operating junction temperature range Tj 0 to 125 °C Ambient temperature range TA −10 to 100 °C Non−operating junction temperature range Tj −55 to 150 °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. |
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