Datasheet LT1941 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | Triple Monolithic Switching Regulator |
| Seiten / Seite | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| Dateiformat / Größe | PDF / 237 Kb |
| Dokumentensprache | Englisch |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING
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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