Datasheet LTC3108-1 (Analog Devices) - 2

LTC3108-1
absoluTe MaxiMuM raTings (Note 1)
SW Voltage ..–0.3V to 2V VS1, VS2, VAUX, VOUT, PGD ..–0.3V to 6V C1 Voltage ..–0.3V to 6V VLDO, VSTORE ..–0.3V to 6V C2 Voltage (Note 5) ...–8V to 8V Operating Junction Temperature Range VOUT2, VOUT2_EN ...–0.3V to 6V (Note 2) ... –40°C to 125°C VAUX ..15mA into VAUX Storage Temperature Range .. –65°C to 125°C
pin conFiguraTion
TOP VIEW TOP VIEW GND 1 16 GND VAUX 1 12 SW VAUX 2 15 SW VSTORE 2 11 C2 VSTORE 3 14 C2 VOUT 3 13 10 C1 VOUT 4 GND 13 C1 VOUT2 4 9 VOUT2_EN VOUT2 5 12 VOUT2_EN VLDO 5 8 VS1 VLDO 6 11 VS1 PGD 6 7 VS2 PGD 7 10 VS2 DE PACKAGE GND 8 9 GND 12-LEAD (4mm × 3mm) PLASTIC DFN GN PACKAGE TJMAX = 125°C, θJA = 43°C/W 16-LEAD PLASTIC SSOP NARROW EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB (NOTE 4) TJMAX = 125°C, θJA = 110°C/W
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3108EDE-1#PBF LTC3108EDE-1#TRPBF 31081 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C LTC3108IDE-1#PBF LTC3108IDE-1#TRPBF 31081 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C LTC3108EGN-1#PBF LTC3108EGN-1#TRPBF 31081 16-Lead Plastic SSOP –40°C to 125°C LTC3108IGN-1#PBF LTC3108IGN-1#TRPBF 31081 16-Lead Plastic SSOP –40°C to 125°C Consult LTC Marketing for parts specified for other fixed output voltages or 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/
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are for TA = 25°C (Note 2). VAUX = 5V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Start-Up Voltage Using 1:100 Transformer Turns Ratio, VAUX = 0V 20 50 mV No-Load Input Current Using 1:100 Transformer Turns Ratio; VIN = 20mV, 3 mA VOUT2_EN = 0V; All Outputs Charged and in Regulation Input Voltage Range Using 1:100 Transformer Turns Ratio l VSTARTUP 500 mV 31081fb 2 For more information www.linear.com/LTC3108-1 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 Applications Typical Application Related Parts