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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC2972 датащи(PDF) 52 Page - Linear Technology |
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LTC2972 датащи(HTML) 52 Page - Linear Technology |
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52 / 112 page  LTC2972 52 2972fa For more information www.linear.com/LTC2972 OUTPUT VOLTAGE COMMANDS AND LIMITS COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED FORMAT UNITS EEPROM DEFAULT VALUE REF PAGE VOUT_MODE 0x20 Output voltage data format and mantissa exponent (2–13). R Byte Y Reg 0x13 52 VOUT_COMMAND 0x21 Servo target. Nominal DC/DC converter output voltage setpoint. R/W Word Y L16 V Y 1.0 0x2000 53 VOUT_MAX 0x24 Upper limit on the output voltage the unit can command regardless of any other commands. R/W Word Y L16 V Y 4.0 0x8000 53 VOUT_MARGIN_HIGH 0x25 Margin high DC/DC converter output voltage setting. R/W Word Y L16 V Y 1.05 0x219A 53 VOUT_MARGIN_LOW 0x26 Margin low DC/DC converter output voltage setting. R/W Word Y L16 V Y 0.95 0x1E66 53 VOUT_OV_FAULT_LIMIT 0x40 Output overvoltage fault limit. R/W Word Y L16 V Y 1.1 0x2333 53 VOUT_OV_WARN_LIMIT 0x42 Output overvoltage warning limit. R/W Word Y L16 V Y 1.075 0x2266 53 VOUT_UV_WARN_LIMIT 0x43 Output undervoltage warning limit. R/W Word Y L16 V Y 0.925 0x1D9A 53 VOUT_UV_FAULT_LIMIT 0x44 Output undervoltage fault limit. Used for Ton_ max_fault and PWRGD pin de-assertion. R/W Word Y L16 V Y 0.9 0x1CCD 53 POWER_GOOD_ON 0x5E Output voltage at or above which the PWRGD pin should be asserted. R/W Word Y L16 V Y 0.96 0x1EB8 53 POWER_GOOD_OFF 0x5F Output voltage at or below which the PWRGD pin should be de-asserted when Mfr_config_all_ pwrgd_off_uses_uv is clear. R/W Word Y L16 V Y 0.94 0x1E14 53 MFR_VOUT_DISCHARGE_ THRESHOLD 0xE9 Coefficient used to multiply VOUT_COMMAND in order to determine VOUT off threshold voltage. R/W Word Y L11 Y 2.0 0xC200 53 MFR_DAC 0xE0 Manufacturer register that contains the code of the 10-bit DAC. R/W Word N Reg 0x0000 53 MFR_DAC_STARTUP 0xCD DAC Output Code Used At Start-up R/W Word Y Reg Y 0x0000 54 VOUT_MODE This command is read only and specifies the mode and exponent for all commands with a L16 data format. See Data Formats on page 27. VOUT_MODE Data Contents BIT(S) SYMBOL OPERATION b[7:5] Vout_mode_type Reports linear mode. Hard-wired to 000b. b[4:0] Vout_mode_parameter Linear mode exponent. 5-bit two’s complement integer. Hardwired to 0x13 (–13 decimal). PMBus COMMAND DESCRIPTION |
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