Datasheet LTC3838 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Dual, Fast, Accurate Step- Down DC/DC Controller with Differential Output Sensing |
| 页数 / 页 | 54 / 2 — absoluTe MaxiMuM raTings (Note 1). pin conFiguraTion. Table 1. Comparison … |
| 文件格式/大小 | PDF / 746 Kb |
| 文件语言 | 英语 |
absoluTe MaxiMuM raTings (Note 1). pin conFiguraTion. Table 1. Comparison of LTC3838 Options PART NUMBER. DESCRIPTION
该数据表的模型线
文件文字版本
LTC3838
absoluTe MaxiMuM raTings (Note 1)
VIN Voltage ... –0.3V to 40V TRACK/SS1, TRACK/SS2 Voltages .. –0.3V to 5V BOOST1, BOOST2 Voltages ... –0.3V to 46V DTR1, DTR2, PHASMD, RT, VRNG1, VRNG2, VFB2, SW1, SW2 Voltages .. –5V to 40V ITH1, ITH2 Voltages .. –0.3V to (INTVCC + 0.3V) INTVCC, DRVCC1, DRVCC2, EXTVCC, PGOOD1, Operating Junction Temperature Range PGOOD2, RUN1, RUN2, (BOOST1-SW1), (Note 2, 3, 4) .. –40°C to 125°C (BOOST2-SW2), MODE/PLLIN Voltages .. –0.3V to 6V Storage Temperature Range .. –65°C to 150°C V + – OUTSENSE1 , VOUTSENSE1 , SENSE1+, SENSE2+, Lead Temperature (Soldering, 10 sec) SENSE1–, SENSE2– Voltages ... –0.6V to 6V FE Package ...300°C
pin conFiguraTion
TOP VIEW TOP VIEW + – DTR2 1 38 RUN2 SENSE2– 2 37 PGOOD2 V FB2 SENSE2 SENSE2 DTR2 RUN2 PGOOD2 BOOST2 SENSE2+ 3 36 BOOST2 38 37 36 35 34 33 32 V 4 35 FB2 TG2 TRACK/SS2 1 31 TG2 TRACK/SS2 5 34 SW2 ITH2 2 30 SW2 ITH2 6 33 BG2 VRNG2 3 29 BG2 V 7 32 DRV PHASMD 4 28 DRV RNG2 CC2 CC2 PHASMD 8 31 EXTV MODE/PLLIN 5 27 EXTV CC CC CLKOUT 6 MODE/PLLIN 9 30 INTVCC 39 26 INTVCC 39 SGND PGND 7 25 PGND CLKOUT 10 29 PGND PGND RT 8 24 V SGND 11 28 V IN IN VRNG1 9 23 DRVCC1 RT 12 27 DRVCC1 ITH1 10 22 BG1 V 13 26 RNG1 BG1 TRACK/SS1 11 21 SW1 ITH1 14 25 SW1 VOUTSENSE1+ 12 20 TG1 TRACK/SS1 15 24 TG1 13 14 15 16 17 18 19 V 16 23 OUTSENSE1+ BOOST1 – + – V 17 22 OUTSENSE1– PGOOD1 DTR1 RUN1 SENSE1 SENSE1 PGOOD1 BOOST1 SENSE1+ 18 21 RUN1 V OUTSENSE1 SENSE1– 19 20 DTR1 UHF PACKAGE 38-LEAD (5mm × 7mm) PLASTIC QFN FE PACKAGE TJMAX = 125°C, θJA = 34°C/W 38-LEAD PLASTIC TSSOP EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB TJMAX = 125°C, θJA = 28°C/W EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
Table 1. Comparison of LTC3838 Options PART NUMBER DESCRIPTION
LTC3838 ±0.67% Differential Output Regulation on Channel 1 ±1% Output Regulation on Channel 2 Separate-Per-Channel Continuous 30mV to 100mV Current Sense Range Controls LTC3838-1 ±0.67% and ±0.75%, Both Differential Output Regulation on Channel 1 and 2 Single-Pin 30mV/60mV Current Sense Range Control, Improved Current Limit Accuracy Than LTC3838 LTC3838-2 ±0.67% Differential Output Regulation with Internal Reference on Channel 1 ±4mV Differential Output Regulation with External Reference Voltage on Channel 2 Fixed 30mV Current Sense Range, Improved Current Limit Accuracy Than LTC3838 3838fb 2 For more information www.linear.com/LTC3838 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
absoluTe MaxiMuM raTings (Note 1)
VIN Voltage ... –0.3V to 40V TRACK/SS1, TRACK/SS2 Voltages .. –0.3V to 5V BOOST1, BOOST2 Voltages ... –0.3V to 46V DTR1, DTR2, PHASMD, RT, VRNG1, VRNG2, VFB2, SW1, SW2 Voltages .. –5V to 40V ITH1, ITH2 Voltages .. –0.3V to (INTVCC + 0.3V) INTVCC, DRVCC1, DRVCC2, EXTVCC, PGOOD1, Operating Junction Temperature Range PGOOD2, RUN1, RUN2, (BOOST1-SW1), (Note 2, 3, 4) .. –40°C to 125°C (BOOST2-SW2), MODE/PLLIN Voltages .. –0.3V to 6V Storage Temperature Range .. –65°C to 150°C V + – OUTSENSE1 , VOUTSENSE1 , SENSE1+, SENSE2+, Lead Temperature (Soldering, 10 sec) SENSE1–, SENSE2– Voltages ... –0.6V to 6V FE Package ...300°C
pin conFiguraTion
TOP VIEW TOP VIEW + – DTR2 1 38 RUN2 SENSE2– 2 37 PGOOD2 V FB2 SENSE2 SENSE2 DTR2 RUN2 PGOOD2 BOOST2 SENSE2+ 3 36 BOOST2 38 37 36 35 34 33 32 V 4 35 FB2 TG2 TRACK/SS2 1 31 TG2 TRACK/SS2 5 34 SW2 ITH2 2 30 SW2 ITH2 6 33 BG2 VRNG2 3 29 BG2 V 7 32 DRV PHASMD 4 28 DRV RNG2 CC2 CC2 PHASMD 8 31 EXTV MODE/PLLIN 5 27 EXTV CC CC CLKOUT 6 MODE/PLLIN 9 30 INTVCC 39 26 INTVCC 39 SGND PGND 7 25 PGND CLKOUT 10 29 PGND PGND RT 8 24 V SGND 11 28 V IN IN VRNG1 9 23 DRVCC1 RT 12 27 DRVCC1 ITH1 10 22 BG1 V 13 26 RNG1 BG1 TRACK/SS1 11 21 SW1 ITH1 14 25 SW1 VOUTSENSE1+ 12 20 TG1 TRACK/SS1 15 24 TG1 13 14 15 16 17 18 19 V 16 23 OUTSENSE1+ BOOST1 – + – V 17 22 OUTSENSE1– PGOOD1 DTR1 RUN1 SENSE1 SENSE1 PGOOD1 BOOST1 SENSE1+ 18 21 RUN1 V OUTSENSE1 SENSE1– 19 20 DTR1 UHF PACKAGE 38-LEAD (5mm × 7mm) PLASTIC QFN FE PACKAGE TJMAX = 125°C, θJA = 34°C/W 38-LEAD PLASTIC TSSOP EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB TJMAX = 125°C, θJA = 28°C/W EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
Table 1. Comparison of LTC3838 Options PART NUMBER DESCRIPTION
LTC3838 ±0.67% Differential Output Regulation on Channel 1 ±1% Output Regulation on Channel 2 Separate-Per-Channel Continuous 30mV to 100mV Current Sense Range Controls LTC3838-1 ±0.67% and ±0.75%, Both Differential Output Regulation on Channel 1 and 2 Single-Pin 30mV/60mV Current Sense Range Control, Improved Current Limit Accuracy Than LTC3838 LTC3838-2 ±0.67% Differential Output Regulation with Internal Reference on Channel 1 ±4mV Differential Output Regulation with External Reference Voltage on Channel 2 Fixed 30mV Current Sense Range, Improved Current Limit Accuracy Than LTC3838 3838fb 2 For more information www.linear.com/LTC3838 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts