Datasheet LT3825 (Analog Devices) - 2

LT3825
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
VCC to GND TOP VIEW Low Impedance Source .. –0.3V to 18V SG 1 16 PG Current Fed VCC 2 15 PGDLY (VCC Has Internal 19.5V Clamp) ...30mA Into VCC tON 3 14 RCMP UVLO, SYNC Pin Voltage ... –0.3V to VCC ENDLY 4 13 C 17 CMP SENSE–, SENSE+ Pin Voltage ..–0.5V, +0.5V SYNC 5 GND 12 SENSE+ FB Pin Current ..±2mA SFST 6 11 SENSE– V OSC 7 10 UVLO C Pin Current ... ±1mA Operating Junction Temperature Range FB 8 9 VC (Notes 2, 3, 4) .. –40°C to 125°C FE PACKAGE Storage Temperature Range ... –65°C to 150°C 16-LEAD PLASTIC TSSOP T Lead Temperature (Soldering, 10 sec) ...300°C JMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3825EFE#PBF LT3825EFE#TRPBF 3825EFE 16-Lead Plastic 4.4mm TSSOP –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3825EFE LT3825EFE#TR 3825EFE 16-Lead Plastic 4.4mm TSSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. 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 at T – A = 25°C. VCC = 14V; PG, SG Open; VC = 1.5V, VSENSE = 0V; RCMP = 1k, RtON = 90k, RPGDLY = 27.4k, RENDLY = 90k, unless otherwise specified (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply
VCC Turn-On Voltage l 14.0 15.3 16.0 V VCC Turn-Off Voltage l 8 9.7 11 V VCC Hysteresis VCC(ON) – VCC(OFF) l 4.0 5.6 6.5 V VCC Shunt Clamp VUVLO = 0V, IVCC = 15mA l 19.5 20.5 V VCC Supply Current (Note 5) (ICC) VC = Open l 4 6.4 10 mA VCC Start-Up Current VCC = 10V l 180 400 µA
Feedback Amplifier
Feedback Regulation Voltage (VFB) l 1.220 1.237 1.251 V Feedback Pin Input Bias Current RCMP Open 200 nA Feedback Amplifier Transconductance ∆IC = ±10µA l 700 1000 1400 µmho Feedback Amplifier Source or Sink Current l 25 55 90 µA Feedback Amplifier Clamp Voltage VFB = 0.9V 2.56 V VFB = 1.4V 3525fe 2 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts