Datasheet LTC3785 (Analog Devices) - 2

LTC3785 absoluTe MaxiMuM raTings pin conFiguraTion
(Note 1)
Input Supply Voltage (V TOP VIEW IN) ... –0.3V to 11V ISVOUT, ISVIN .. –0.3V to 11V V IN V CC I SVIN V BST1 TG1 SW1 SW1, SW2, ISSW1, ISSW2 Voltage: 24 23 22 21 20 19 DC ... –1V to 11V RUN/SS 1 18 ISSW1 Pulsed, <1µs ... –2V to 12V VC 2 17 BG1 RUN/SS, MODE, CCM, V FB 3 25 16 VDRV DRV, VCC Voltages .. –0.3V to 6V VSENSE 4 GND 15 BG2 VBST1 Voltage ... –0.3V to 16V ILSET 5 14 I With Respect to SW1 ... –0.3V to 6V SSW2 CCM 6 13 SW2 VBST2 Voltage ... –0.3V to 16V 7 8 9 10 11 12 With Respect to SW2 ... –0.3V to 6V RT NC Peak Driver Output Current < 10µs MODE I SVOUT V BST2 TG2 (TG1, TG2, BG1, BG2) ...3A UF PACKAGE 24-LEAD (4mm s 4mm) PLASTIC QFN V CC Average Output Current ...100mA TJMAX = 125°C, θJA = 40°C/W 1 LAYER BOARD, θJA = 30°C/W 4 LAYER BOARD Operating Junction Temperature Range EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB (Note 2) ..–40°C to 125°C Junction Temperature ... 125°C Storage Temperature Range ...–65°C to 150°C orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3785EUF#PBF LTC3785EUF#TRPBF 3785 24-Lead (4mm × 4mm) Plastic QFN –40°C to 85°C LTC3785IUF#PBF LTC3785IUF#TRPBF 3785 24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3785EUF LTC3785EUF#TR 3785 24-Lead (4mm × 4mm) Plastic QFN –40°C to 85°C LTC3785IUF LTC3785IUF#TR 3785 24-Lead (4mm × 4mm) 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/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/ elecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = ISVOUT = VDRV = VBST1 = VBST2 = 3.6V, RT = 49.9k, RILSET = 59k. PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Supply
Input Operating Voltage l 2.7 10 V Quiescent Current—Burst Mode Operation VC = 0V, MODE = 3.6V (Note 4) 86 200 µA Quiescent Current—Shutdown RUN/SS = 0V, ISVOUT = 3.6V 15 25 µA Quiescent Current—Active MODE = 0V (Note 4) 0.8 1.5 mA
Error Amp
Feedback Voltage (Note 5) l 1.200 1.225 1.25 V Feedback Input Current 1 500 nA 3785fc Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts