Datasheet LT1941 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Triple Monolithic Switching Regulator |
| Pages / Page | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| File Format / Size | PDF / 237 Kb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING
Model Line for this Datasheet
Text Version of Document
LT1941
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
TOP VIEW VIN Pin ..(–0.3V), 25V BOOST Pin Voltage ...35V V 1 28 IN BIAS2 BOOST Above SW Pin ...25V V 2 27 IN SW3 SW1 3 26 PGND BIAS1, BIAS2 Pins ..25V SW1 4 25 VIN PGOOD, 5GOOD, 12GOOD Pins ...25V BOOST1 5 24 BOOST2 RUN/SS, VC, FB, NFB Pins ..3V PGOOD1 6 23 SW2 SW1, SW2 Voltage ...VIN V 7 22 C1 VIN SW3 Voltage ...40V 29 FB1 8 21 PGOOD3 Maximum Junction Temperature (Note 6) .. 125°C PGOOD2 9 20 FB3 Operating Ambient Temperature Range V 10 19 C2 NFB (Note 2) ..–40°C to 85°C FB2 11 18 VC3 Storage Temperature Range .. –65°C to 150°C RUN/SS1 12 17 5GOOD Lead Temperature (Soldering, 10 sec)... 300°C RUN/SS2 13 16 12GOOD RUN/SS3 14 15 BIAS1 FE PACKAGE 28-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 25°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1941EFE#PBF LT1941EFE#TRPBF LT1941EFE 28-LEAD PLASTIC TSSOP –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1941EFE LT1941EFE#TR LT1941EFE 28-LEAD PLASTIC TSSOP –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. 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/
The ELECTRICAL CHARACTERISTICS
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN, VBIAS1, VBIAS2 = 5V, VBOOST1, VBOOST2 = 8V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage l 3.3 3.5 V VIN Quiescent Current Not Switching 2 3.5 mA BIAS1 Quiescent Current Not Switching 5 7.5 mA BIAS2 Quiescent Current Not Switching 1.6 2.2 mA Shutdown Current VRUNSS1,2,3 = 0V 50 75 μA Reference Voltage Line Regulation 5V < VIN < 25V 0.01 %/V VC Source Current VC = 0.6V 100 μA VC Sink Current VC = 0.6V 100 μA VC Clamp Voltage 1.7 V Switching Frequency l 0.9 1.1 1.35 MHz 1941fb 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
TOP VIEW VIN Pin ..(–0.3V), 25V BOOST Pin Voltage ...35V V 1 28 IN BIAS2 BOOST Above SW Pin ...25V V 2 27 IN SW3 SW1 3 26 PGND BIAS1, BIAS2 Pins ..25V SW1 4 25 VIN PGOOD, 5GOOD, 12GOOD Pins ...25V BOOST1 5 24 BOOST2 RUN/SS, VC, FB, NFB Pins ..3V PGOOD1 6 23 SW2 SW1, SW2 Voltage ...VIN V 7 22 C1 VIN SW3 Voltage ...40V 29 FB1 8 21 PGOOD3 Maximum Junction Temperature (Note 6) .. 125°C PGOOD2 9 20 FB3 Operating Ambient Temperature Range V 10 19 C2 NFB (Note 2) ..–40°C to 85°C FB2 11 18 VC3 Storage Temperature Range .. –65°C to 150°C RUN/SS1 12 17 5GOOD Lead Temperature (Soldering, 10 sec)... 300°C RUN/SS2 13 16 12GOOD RUN/SS3 14 15 BIAS1 FE PACKAGE 28-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 25°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1941EFE#PBF LT1941EFE#TRPBF LT1941EFE 28-LEAD PLASTIC TSSOP –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1941EFE LT1941EFE#TR LT1941EFE 28-LEAD PLASTIC TSSOP –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. 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/
The ELECTRICAL CHARACTERISTICS
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN, VBIAS1, VBIAS2 = 5V, VBOOST1, VBOOST2 = 8V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage l 3.3 3.5 V VIN Quiescent Current Not Switching 2 3.5 mA BIAS1 Quiescent Current Not Switching 5 7.5 mA BIAS2 Quiescent Current Not Switching 1.6 2.2 mA Shutdown Current VRUNSS1,2,3 = 0V 50 75 μA Reference Voltage Line Regulation 5V < VIN < 25V 0.01 %/V VC Source Current VC = 0.6V 100 μA VC Sink Current VC = 0.6V 100 μA VC Clamp Voltage 1.7 V Switching Frequency l 0.9 1.1 1.35 MHz 1941fb 2
