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LTC4020 Datasheet(PDF) 2 Page - Linear Technology |
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LTC4020 Datasheet(HTML) 2 Page - Linear Technology |
2 / 42 page LTC4020 2 4020fb For more information www.linear.com/LTC4020 PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS PVIN, SENSVIN............................................. –0.3 to 60V BST1, BST2.................................................. –0.3 to 66V SW1, SW2........................................................–2 to 60V SENSVIN – PVIN........................................... –0.3 to 60V BST1 – SW1, BST2 – SW2............................. –0.3 to 6V SENSVIN – SENSTOP, SENSBOT – SENSGND ....................................................–0.3 to 0.3V CSP, CSN ..................................................... –0.3 to 60V CSP – CSN...................................................–0.3 to 0.3V STAT1, STAT2, SHDN ................................... –0.3 to 60V VFBMAX, VINREG, VFB, VFBMIN, BAT, FBG....... –0.3 to 60V MODE............................................................. –0.3 to 6V Status Pin Currents: STAT1, STAT2 ......................................................5mA Operating Junction Temperature Range (Note 2)....................................... –40°C to 125°C Storage Temperature Range .................. –65°C to 150°C (Note 1) 13 14 15 16 TOP VIEW 39 SGND UHF PACKAGE 38-LEAD PLASTIC QFN (5mm × 7mm) 17 18 19 38 37 36 35 34 33 32 24 25 26 27 28 29 30 31 8 7 6 5 4 3 2 1 TG1 BST1 SGND SENSGND SENSBOT SENSTOP SENSVIN RT SHDN VIN_REG MODE STAT1 TG2 BST2 SGND VC ITH VFBMAX ILIMIT CSOUT CSP CSN BGATE BAT 23 22 21 20 9 10 11 12 TJMAX = 125°C, θJA = 34°C/W, θJC = 2°C/W EXPOSED PAD (PIN 39) IS SGND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4020EUHF#PBF LTC4020EUHF#TRPBF 4020 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C LTC4020IUHF#PBF LTC4020IUHF#TRPBF 4020 38-Lead (5mm × 7mm) Plastic QFN –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. 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/ SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Buck-Boost Switching Converter VIN Operating Voltage Range PVIN; SENSVIN l 4.5 55 V UVLO VIN Supply UVLO (Rising) VIN Supply UVLO Hysteresis DC/DC Functions Enabled VIN Falling l 3.6 4.0 0.4 4.4 V V SENSVIN Supply UVLO (Rising) SENSVIN UVLO Hysteresis INTVCC Enabled SENSVIN Falling 3.4 0.3 V V BST Supplies UVLO (Rising) BST Supplies UVLO Hysteresis BST1 – SW1; BST2 – SW2; SW1, SW2 = 0V l 3.0 3.3 0.4 3.8 V V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). PVIN = SENSVIN = CSP = CSN = BAT = 20V, SHDN = 2V, C(TG1, BG1, TG2, BG2) = 1000pF, VRNG/SS = 2V. |
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