Datasheet LT3971A, LT3971A-5 (Analog Devices) - 2
| Fabricante | Analog Devices |
| Descripción | 38V, 1.3A, 2MHz Step-Down Regulator with 2.2μA Quiescent Current |
| Páginas / Página | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. (Note 1). PIN CONFIGURATION. ORDER INFORMATION. … |
| Formato / tamaño de archivo | PDF / 361 Kb |
| Idioma del documento | Inglés |
ABSOLUTE MAXIMUM RATINGS. (Note 1). PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
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LT3971A/LT3971A-5
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN, EN Voltage ...38V Operating Junction Temperature Range (Note 2) BOOST Pin Voltage ...55V LT3971AI/LT3971AI-5 .. –40°C to 125°C BOOST Pin Above SW Pin ...30V Storage Temperature Range .. –65°C to 150°C FB, RT, SYNC, SS Voltage ...6V Lead Temperature (Soldering, 10 sec) PG, BD Voltage ...30V (MSE Only) ... 300°C VOUT Pin Current ..–2mA
PIN CONFIGURATION
LT3971A LT3971A-5 TOP VIEW TOP VIEW BD 1 10 SYNC BD 1 10 SYNC BOOST 2 9 PG BOOST 2 9 PG 11 11 SW 3 8 RT SW 3 8 RT GND GND V 4 IN 7 SS V 4 IN 7 SS EN 5 6 FB EN 5 6 VOUT MSE PACKAGE MSE PACKAGE 10-LEAD PLASTIC MSOP 10-LEAD PLASTIC MSOP θJA = 45°C, θJC = 10°C/W θJA = 45°C, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB 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
LT3971AIMSE#PBF LT3971AIMSE#TRPBF LTGFQ 10-Lead Plastic MSOP –40°C to 125°C LT3971AIMSE-5#PBF LT3971AIMSE-5#TRPBF LTGFR 10-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VEN = 12V, VBD = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage (Note 4) l 4 4.3 V Quiescent Current from VIN VEN Low 0.7 1.2 μA VEN High, VSYNC Low 1.7 2.7 μA VEN High, VSYNC Low l 4.5 μA LT3971A FB Pin Current VFB = 1.19V l 0.1 12 nA Internal Feedback Resistor Divider (LT3971A-5) 10 MΩ 3971af 2 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN, EN Voltage ...38V Operating Junction Temperature Range (Note 2) BOOST Pin Voltage ...55V LT3971AI/LT3971AI-5 .. –40°C to 125°C BOOST Pin Above SW Pin ...30V Storage Temperature Range .. –65°C to 150°C FB, RT, SYNC, SS Voltage ...6V Lead Temperature (Soldering, 10 sec) PG, BD Voltage ...30V (MSE Only) ... 300°C VOUT Pin Current ..–2mA
PIN CONFIGURATION
LT3971A LT3971A-5 TOP VIEW TOP VIEW BD 1 10 SYNC BD 1 10 SYNC BOOST 2 9 PG BOOST 2 9 PG 11 11 SW 3 8 RT SW 3 8 RT GND GND V 4 IN 7 SS V 4 IN 7 SS EN 5 6 FB EN 5 6 VOUT MSE PACKAGE MSE PACKAGE 10-LEAD PLASTIC MSOP 10-LEAD PLASTIC MSOP θJA = 45°C, θJC = 10°C/W θJA = 45°C, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB 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
LT3971AIMSE#PBF LT3971AIMSE#TRPBF LTGFQ 10-Lead Plastic MSOP –40°C to 125°C LT3971AIMSE-5#PBF LT3971AIMSE-5#TRPBF LTGFR 10-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VEN = 12V, VBD = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage (Note 4) l 4 4.3 V Quiescent Current from VIN VEN Low 0.7 1.2 μA VEN High, VSYNC Low 1.7 2.7 μA VEN High, VSYNC Low l 4.5 μA LT3971A FB Pin Current VFB = 1.19V l 0.1 12 nA Internal Feedback Resistor Divider (LT3971A-5) 10 MΩ 3971af 2 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS