Datasheet LT3434 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | High Voltage 3A, 200kHz Step-Down Switching Regulator with 100µA Quiescent Current |
| Seiten / Seite | 24 / 2 — ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order … |
| Dateiformat / Größe | PDF / 418 Kb |
| Dokumentensprache | Englisch |
ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS The
Modelllinie für dieses Datenblatt
Textversion des Dokuments
LT3434
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VIN, SHDN, BIAS, PGOOD, SW ... 60V TOP VIEW ORDER PART BOOST Pin Above SW .. 35V NC 1 16 PGOOD NUMBER BOOST Pin Voltage ... 68V SW 2 15 SHDN SYNC, C LT3434EFE SS, PGFB, FB .. 6V V 3 14 IN SYNC Operating JunctionTemperature Range V 4 13 PGFB LT3434IFE IN 17 LT3434EFE (Note 2) .. – 40°C to 125°C SW 5 12 FB LT3434IFE (Note 2) ... – 40°C to 125°C BOOST 6 11 VC Storage Temperature Range ... – 65°C to 150°C C 7 10 T BIAS FE PART Lead Temperature (Soldering, 10 sec).. 300°C GND 8 9 CSS MARKING FE PACKAGE 3434EFE 16-LEAD PLASTIC TSSOP T 3434IFE JMAX = 125°C, θJA = 45°C/W, θJC(PAD) = 10°C/W EXPOSED PAD IS GND (PIN 17) MUST BE SOLDERED TO GND (PIN 8)
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25
°
C. VIN = 12V, SHDN = 12V, BIAS = 5V, FB/PGFB = 1.25V, CSS/SYNC = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VSHDN SHDN Threshold 1.15 1.3 1.45 V ISHDN SHDN Input Current SHDN = 12V ● 5 20 µA Minimum Input Voltage (Note 3) ● 2.4 3 V IVINS Supply Shutdown Current SHDN = 0V, BOOST = 0V, FB/PGFB = 0V 0.1 2 µA Supply Sleep Current (Note 4) BIAS = 0V, FB = 1.35V ● 170 250 µA FB = 1.35V ● 45 75 µA IVIN Supply Quiescent Current BIAS = 0V, FB = 1.15V 3.2 6 mA BIAS = 5V, FB = 1.15V 2.6 5 mA Minimum BIAS Voltage (Note 5) FB = 1.15V ● 2.7 3.1 V IBIASS BIAS Sleep Current (Note 4) ● 110 180 µA IBIAS BIAS Quiescent Current SYNC = 3.3V 700 900 µA Minimum Boost Voltage (Note 6) ISW = 3A 1.8 V Input Boost Current (Note 7) ISW = 3A 65 85 mA VREF Reference Voltage (VREF) 3.3V < VVIN < 60V ● 1.225 1.25 1.275 V IFB FB Input Bias Current 75 200 nA EA Voltage Gain (Note 8) 900 V/V EA Voltage gm dI(VC)= ±10µA 400 650 900 µMho EA Source Current FB = 1.15V 20 40 55 µA EA Sink Current FB = 1.35V 15 30 40 µA VC to SW gm 6 A/V 3434fb 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VIN, SHDN, BIAS, PGOOD, SW ... 60V TOP VIEW ORDER PART BOOST Pin Above SW .. 35V NC 1 16 PGOOD NUMBER BOOST Pin Voltage ... 68V SW 2 15 SHDN SYNC, C LT3434EFE SS, PGFB, FB .. 6V V 3 14 IN SYNC Operating JunctionTemperature Range V 4 13 PGFB LT3434IFE IN 17 LT3434EFE (Note 2) .. – 40°C to 125°C SW 5 12 FB LT3434IFE (Note 2) ... – 40°C to 125°C BOOST 6 11 VC Storage Temperature Range ... – 65°C to 150°C C 7 10 T BIAS FE PART Lead Temperature (Soldering, 10 sec).. 300°C GND 8 9 CSS MARKING FE PACKAGE 3434EFE 16-LEAD PLASTIC TSSOP T 3434IFE JMAX = 125°C, θJA = 45°C/W, θJC(PAD) = 10°C/W EXPOSED PAD IS GND (PIN 17) MUST BE SOLDERED TO GND (PIN 8)
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25
°
C. VIN = 12V, SHDN = 12V, BIAS = 5V, FB/PGFB = 1.25V, CSS/SYNC = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VSHDN SHDN Threshold 1.15 1.3 1.45 V ISHDN SHDN Input Current SHDN = 12V ● 5 20 µA Minimum Input Voltage (Note 3) ● 2.4 3 V IVINS Supply Shutdown Current SHDN = 0V, BOOST = 0V, FB/PGFB = 0V 0.1 2 µA Supply Sleep Current (Note 4) BIAS = 0V, FB = 1.35V ● 170 250 µA FB = 1.35V ● 45 75 µA IVIN Supply Quiescent Current BIAS = 0V, FB = 1.15V 3.2 6 mA BIAS = 5V, FB = 1.15V 2.6 5 mA Minimum BIAS Voltage (Note 5) FB = 1.15V ● 2.7 3.1 V IBIASS BIAS Sleep Current (Note 4) ● 110 180 µA IBIAS BIAS Quiescent Current SYNC = 3.3V 700 900 µA Minimum Boost Voltage (Note 6) ISW = 3A 1.8 V Input Boost Current (Note 7) ISW = 3A 65 85 mA VREF Reference Voltage (VREF) 3.3V < VVIN < 60V ● 1.225 1.25 1.275 V IFB FB Input Bias Current 75 200 nA EA Voltage Gain (Note 8) 900 V/V EA Voltage gm dI(VC)= ±10µA 400 650 900 µMho EA Source Current FB = 1.15V 20 40 55 µA EA Sink Current FB = 1.35V 15 30 40 µA VC to SW gm 6 A/V 3434fb 2