Datasheet LTC4020 (Analog Devices) - 2

LTC4020
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
PV TOP VIEW IN, SENSVIN ... –0.3 to 60V BST1, BST2 .. –0.3 to 66V CC IN SW1, SW2 ..–2 to 60V SW1 BG1 PV PGND INTV BG2 SW2 38 37 36 35 34 33 32 SENSVIN – PVIN ... –0.3 to 60V TG1 1 31 TG2 BST1 – SW1, BST2 – SW2 ... –0.3 to 6V BST1 2 30 BST2 SENSVIN – SENSTOP, SENSBOT – SGND 3 29 SGND SENSGND ..–0.3 to 0.3V SENSGND 4 28 VC CSP, CSN ... –0.3 to 60V SENSBOT 5 27 ITH SENSTOP 6 39 CSP – CSN ...–0.3 to 0.3V 26 VFBMAX SGND SENSVIN 7 25 ILIMIT STAT1, STAT2, SHDN ... –0.3 to 60V RT 8 24 CSOUT VFBMAX, VINREG, VFB, VFBMIN, BAT, FBG ... –0.3 to 60V SHDN 9 23 CSP MODE ... –0.3 to 6V VIN_REG 10 22 CSN Status Pin Currents: MODE 11 21 BGATE STAT1, STAT2 ..5mA STAT1 12 20 BAT 13 14 15 16 17 18 19 Operating Junction Temperature Range (Note 2) ... –40°C to 125°C NTC VFB FBG STAT2 TIMER RNG/SS V FBMIN Storage Temperature Range .. –65°C to 150°C UHF PACKAGE 38-LEAD PLASTIC QFN (5mm × 7mm) TJMAX = 125°C, θJA = 34°C/W, θJC = 2°C/W EXPOSED PAD (PIN 39) IS SGND, MUST BE SOLDERED TO PCB
orDer inForMaTion (http://www.linear.com/product/LTC4020#orderinfo) 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/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
e lecTrical characTerisTics The
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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. 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) DC/DC Functions Enabled l 3.6 4.0 4.4 V VIN Supply UVLO Hysteresis VIN Falling 0.4 V SENSVIN Supply UVLO (Rising) INTVCC Enabled 3.4 V SENSVIN UVLO Hysteresis SENSVIN Falling 0.3 V BST Supplies UVLO (Rising) BST1 – SW1; BST2 – SW2; l 3.0 3.3 3.8 V BST Supplies UVLO Hysteresis SW1, SW2 = 0V 0.4 V 4020fd 2 For more information www.linear.com/LTC4020 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts