Datasheet LT3972 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 33V, 3.5A, 2.4MHz Step-Down Switching Regulator with 75μA Quiescent Current |
| 页数 / 页 | 24 / 2 — ABSOLUTE MAXIMUM RATINGS (Note 1). PIN CONFIGURATION. ORDER INFORMATION. … |
| 文件格式/大小 | PDF / 346 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS (Note 1). PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
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LT3972
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN, RUN/SS Voltage (Note 5) ...62V Operating Junction Temperature Range (Note 2) BOOST Pin Voltage ...56V LT3972E ...– 40°C to 125°C BOOST Pin Above SW Pin ...30V LT3972I ..– 40°C to 125°C FB, RT, VC Voltage ...5V LT3972H ..– 40°C to 150°C PG, BD, SYNC Voltage ..30V Storage Temperature Range ...–65°C to 150°C Lead Temperature (Soldering, 10 sec) (MSE Only) ... 300°C
PIN CONFIGURATION
TOP VIEW TOP VIEW BD 1 10 RT BD 1 10 RT BOOST 2 9 VC BOOST 2 9 VC SW 3 11 8 FB SW 3 11 8 FB V 4 7 PG V 4 7 PG IN IN RUN/SS 5 6 SYNC RUN/SS 5 6 SYNC MSE PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE θ 10-LEAD (3mm s 3mm) PLASTIC DFN JA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB θJA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3972EDD#PBF LT3972EDD#TRPBF LDXR 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT3972IDD#PBF LT3972IDD#TRPBF LDXR 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT3972EMSE#PBF LT3972EMSE#TRPBF LTDXS 10-Lead Plastic MSOP –40°C to 125°C LT3972IMSE#PBF LT3972IMSE#TRPBF LTDXS 10-Lead Plastic MSOP –40°C to 125°C LT3972HMSE#PBF LT3972HMSE#TRPBF LTDXS 10-Lead Plastic MSOP –40°C to 150°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. Consult LTC Marketing for information on non-standard lead based fi nish parts. 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/
ELECTRICAL CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 10V, VRUN/SS = 10V, VBOOST = 15V, VBD = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage ● 3 3.6 V VIN Overvoltage Lockout ● 33 35 37 V Quiescent Current from VIN VRUN/SS = 0.2V 0.01 0.5 μA VBD = 3V, Not Switching ● 30 65 μA VBD = 0, Not Switching 120 160 μA 3972fa 2
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN, RUN/SS Voltage (Note 5) ...62V Operating Junction Temperature Range (Note 2) BOOST Pin Voltage ...56V LT3972E ...– 40°C to 125°C BOOST Pin Above SW Pin ...30V LT3972I ..– 40°C to 125°C FB, RT, VC Voltage ...5V LT3972H ..– 40°C to 150°C PG, BD, SYNC Voltage ..30V Storage Temperature Range ...–65°C to 150°C Lead Temperature (Soldering, 10 sec) (MSE Only) ... 300°C
PIN CONFIGURATION
TOP VIEW TOP VIEW BD 1 10 RT BD 1 10 RT BOOST 2 9 VC BOOST 2 9 VC SW 3 11 8 FB SW 3 11 8 FB V 4 7 PG V 4 7 PG IN IN RUN/SS 5 6 SYNC RUN/SS 5 6 SYNC MSE PACKAGE 10-LEAD PLASTIC MSOP DD PACKAGE θ 10-LEAD (3mm s 3mm) PLASTIC DFN JA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB θJA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3972EDD#PBF LT3972EDD#TRPBF LDXR 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT3972IDD#PBF LT3972IDD#TRPBF LDXR 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT3972EMSE#PBF LT3972EMSE#TRPBF LTDXS 10-Lead Plastic MSOP –40°C to 125°C LT3972IMSE#PBF LT3972IMSE#TRPBF LTDXS 10-Lead Plastic MSOP –40°C to 125°C LT3972HMSE#PBF LT3972HMSE#TRPBF LTDXS 10-Lead Plastic MSOP –40°C to 150°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. Consult LTC Marketing for information on non-standard lead based fi nish parts. 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/
ELECTRICAL CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 10V, VRUN/SS = 10V, VBOOST = 15V, VBD = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage ● 3 3.6 V VIN Overvoltage Lockout ● 33 35 37 V Quiescent Current from VIN VRUN/SS = 0.2V 0.01 0.5 μA VBD = 3V, Not Switching ● 30 65 μA VBD = 0, Not Switching 120 160 μA 3972fa 2