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SMB119 Scheda tecnica(PDF) 4 Page - Summit Microelectronics, Inc. |
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SMB119 Scheda tecnica(HTML) 4 Page - Summit Microelectronics, Inc. |
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4 / 34 page  SMB119 Summit Microelectronics, Inc 4 PIN DESCRIPTIONS Pin Number Pin Name Pin Type Pin Description 1 DGND Ground Digital Ground. Connect to isolated PCB ground 2 PWR_EN Input Enable input. PWR_EN is programmable to activate one or more channels. This pin can be programmed to latch and act as a debounced, manual push button input. Active high when level triggered, active low when used as a push- button input. 3 DRVL4 Output Buck or Boost converter low-side drive. Connect to NFET gate 4 DRVH4 Output Buck converter high-side drive. Connect to PFET gate (for buck only) 5 VIN4 Power Channel 4 controller power. Connect to +2.7V to +6.0V to supply internal FET drivers 6 COMPA4 Input Channel 4 Buck or Boost outputs error amplifier input. Connect this node to the type three R/C compensation network 7 PCHSEQ4 Output Boost converter sequence. Connect to PFET gate for boost channel on/off and sequencing. Must be tied to ground when unused. 8 COMPB4 Input Channel 4 Buck or Boost outputs error amplifier output. Connect this node to the type three R/C compensation network. 9 HEALTHY Output Output Monitor. Open drain active-high output asserts when all output channels are within UV/OV limits (ignoring disabled outputs) 10 POWER_FAIL Output Battery/Input Monitor. Detects low input voltage. Latched open-drain active high output. Associated threshold must be set higher than nBATT_FAULT threshold. 11 COMP6 Input Buck converter 6 compensation pin. Connect to type 2 R/C compensation network 12 FB6 Input Buck converter 6 feedback pin. Connect directly to output 13 SW6 Input/Output Buck converter 6 switch pin. Connect to drains of NFET 14 VIN6 Power Buck Converter 6 Power. Connect to +2.7V to +6.0V to supply internal PFET 15 DRVL6 Output Buck converter 6 low-side drive. Connect to NFET gate 16 SYS_EN Input Enable input. The SYS_EN pin is an active high programmable input used to enable (disable) selected supplies. When unused this pin should be tied to a solid logic level. 17 DRVL7 Output Buck converter 7 low-side drive. Connect to NFET gate 18 VIN7 Power Buck Converter 7 Power. Connect to +2.7V to +6.0V to supply internal PFET 19 SW7 Input/Output Buck converter 7 switch pin. Connect to drains of NFET 20 FB7 Input Buck converter 7 feedback pin. Connect directly to output 21 COMP7 Input Buck converter 7 compensation pin. Connect to type 2 R/C compensation network 22 nRESET Output Reset Output. releases with programmable delay after all outputs are valid. Open-drain active low output 23 PCHSEQ1 Output Boost converter 1 sequence. Connect to PFET gate for boost channel on/off and sequencing. Must be tied to ground when unused. 24 VDD_CAP Power VDD Bypass. Connect to VDD bypass capacitor with 10uF capacitor. 25 VDDP Power Power Input for the Boost and Buck-Boost Converters. Connect to +2.7V to +6.0V voltage source |
Codice articolo simile - SMB119 |
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Descrizione simile - SMB119 |
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