Datasheet LTC3728 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Dual, 550kHz, 2-Phase Synchronous Step-Down Switching Regulator |
| Pages / Page | 36 / 2 — ABSOLUTE MAXIMUM RATINGS (Note 1). PIN CONFIGURATION. ORDER INFORMATION. … |
| File Format / Size | PDF / 1.7 Mb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS (Note 1). PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
Model Line for this Datasheet
Text Version of Document
LTC3728
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ...36V to – 0.3V ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ... 2.7V to –0.3V Topside Driver Voltages Peak Output Current <10μs (TG1, TG2, BG1, BG2) ...3A (BOOST1, BOOST2) ... 42V to –0.3V INTVCC Peak Output Current ... 50mA Switch Voltage (SW1, SW2) ... 36V to –5V Operating Temperature Range (Note 7).. –40°C to 85°C INTVCC, EXTVCC, RUN/SS1, RUN/SS2, Junction Temperature (Note 2) ... 125°C (BOOST1-SW1), (BOOST2-SW2), PGOOD ... 7V to –0.3V Storage Temperature Range ... –65°C to 125°C SENSE1+, SENSE2+, SENSE1–, Lead Temperature (Soldering, 10 sec) SENSE2– Voltages ...(1.1)INTVCC to –0.3V (G Package Only) .. 300°C PLLIN, PLLFLTR, FCB Voltages .. INTVCC to –0.3V
PIN CONFIGURATION
TOP VIEW TOP VIEW – + RUN/SS1 1 28 PGOOD SENSE1+ 2 27 TG1 NC SENSE1 SENSE1 NC RUN/SS1 PGOOD TG1 SW1 32 31 30 29 28 27 26 25 SENSE1– 3 26 SW1 V 1 24 V 4 25 BOOST1 OSENSE1 BOOST1 OSENSE1 PLLFLTR 2 23 VIN PLLFLTR 5 24 VIN PLLIN 3 22 BG1 PLLIN 6 23 BG1 FCB 4 21 EXTVCC FCB 7 22 EXTVCC 33 I 5 20 TH1 INTVCC I 8 21 TH1 INTVCC SGND 6 19 PGND SGND 9 20 PGND 3.3V 7 18 OUT BG2 3.3V 10 19 OUT BG2 I 8 17 TH2 BOOST2 I 11 18 TH2 BOOST2 9 10 11 12 13 14 15 16 V 12 17 OSENSE2 SW2 – + NC TG2 NC SENSE2– 13 TG2 SW2 16 OSENSE2 SENSE2+ 14 15 RUN/SS2 V SENSE2 SENSE2 RUN/SS2 G PACKAGE UH PACKAGE 28-LEAD PLASTIC SSOP 32-LEAD (5mm × 5mm) PLASTIC QFN T T JMAX = 125°C, θJA = 90°C/W - SINGLE LAYER BOARD JMAX = 125°C, θJA = 34°C/W 68º C/W - 4 LAYER EXPOSED PAD IS SGND (MUST BE SOLDERED TO PCB)
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3728EG#PBF LTC3728EG#TRPBF LTC3728EG 28-Lead Plastic SSOP –40°C to 85°C LTC3728IG#PBF LTC3728IG#TRPBF LTC3728IG 28-Lead Plastic SSOP –40°C to 85°C LTC3728EUH#PBF LTC3728EUH#TRPBF 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3728IUH#PBF LTC3728IUH#TRPBF 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3728EG LTC3728EG#TR LTC3728EG 28-Lead Plastic SSOP –40°C to 85°C LTC3728IG LTC3728IG#TR LTC3728IG 28-Lead Plastic SSOP –40°C to 85°C LTC3728EUH LTC3728EUH#TR 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3728IUH LTC3728IUH#TR 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/ 3728fg 2
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ...36V to – 0.3V ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ... 2.7V to –0.3V Topside Driver Voltages Peak Output Current <10μs (TG1, TG2, BG1, BG2) ...3A (BOOST1, BOOST2) ... 42V to –0.3V INTVCC Peak Output Current ... 50mA Switch Voltage (SW1, SW2) ... 36V to –5V Operating Temperature Range (Note 7).. –40°C to 85°C INTVCC, EXTVCC, RUN/SS1, RUN/SS2, Junction Temperature (Note 2) ... 125°C (BOOST1-SW1), (BOOST2-SW2), PGOOD ... 7V to –0.3V Storage Temperature Range ... –65°C to 125°C SENSE1+, SENSE2+, SENSE1–, Lead Temperature (Soldering, 10 sec) SENSE2– Voltages ...(1.1)INTVCC to –0.3V (G Package Only) .. 300°C PLLIN, PLLFLTR, FCB Voltages .. INTVCC to –0.3V
PIN CONFIGURATION
TOP VIEW TOP VIEW – + RUN/SS1 1 28 PGOOD SENSE1+ 2 27 TG1 NC SENSE1 SENSE1 NC RUN/SS1 PGOOD TG1 SW1 32 31 30 29 28 27 26 25 SENSE1– 3 26 SW1 V 1 24 V 4 25 BOOST1 OSENSE1 BOOST1 OSENSE1 PLLFLTR 2 23 VIN PLLFLTR 5 24 VIN PLLIN 3 22 BG1 PLLIN 6 23 BG1 FCB 4 21 EXTVCC FCB 7 22 EXTVCC 33 I 5 20 TH1 INTVCC I 8 21 TH1 INTVCC SGND 6 19 PGND SGND 9 20 PGND 3.3V 7 18 OUT BG2 3.3V 10 19 OUT BG2 I 8 17 TH2 BOOST2 I 11 18 TH2 BOOST2 9 10 11 12 13 14 15 16 V 12 17 OSENSE2 SW2 – + NC TG2 NC SENSE2– 13 TG2 SW2 16 OSENSE2 SENSE2+ 14 15 RUN/SS2 V SENSE2 SENSE2 RUN/SS2 G PACKAGE UH PACKAGE 28-LEAD PLASTIC SSOP 32-LEAD (5mm × 5mm) PLASTIC QFN T T JMAX = 125°C, θJA = 90°C/W - SINGLE LAYER BOARD JMAX = 125°C, θJA = 34°C/W 68º C/W - 4 LAYER EXPOSED PAD IS SGND (MUST BE SOLDERED TO PCB)
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3728EG#PBF LTC3728EG#TRPBF LTC3728EG 28-Lead Plastic SSOP –40°C to 85°C LTC3728IG#PBF LTC3728IG#TRPBF LTC3728IG 28-Lead Plastic SSOP –40°C to 85°C LTC3728EUH#PBF LTC3728EUH#TRPBF 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3728IUH#PBF LTC3728IUH#TRPBF 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3728EG LTC3728EG#TR LTC3728EG 28-Lead Plastic SSOP –40°C to 85°C LTC3728IG LTC3728IG#TR LTC3728IG 28-Lead Plastic SSOP –40°C to 85°C LTC3728EUH LTC3728EUH#TR 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3728IUH LTC3728IUH#TR 3728 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/ 3728fg 2
