Datasheet LT3681 (Analog Devices) - 2

LT3681
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
TOP VIEW VIN, RUN/SS Voltage ...36V BOOST Pin Voltage ...56V PG 1 14 RUN/SS BOOST Pin Above SW Pin ...30V BIAS 2 13 VIN 15 FB 3 12 SW FB, RT, VC Voltage ...5V GND 4 11 BOOST BIAS, PG, BD Voltage ..30V V 5 10 BD C Maximum Junction Temperature .. 125°C R 6 9 DC T 16 DC above DA ...40V GND 7 8 DA Operating Temperature Range (Note 2) DE14MA PACKAGE LT3681E ... –40°C to 85°C 14-LEAD (4mm ´ 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 43°C/W Storage Temperature Range ... –65°C to 150°C EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD PIN 16 IS DC ORDER PART NUMBER DE PART MARKING LT3681EDE 3681
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
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denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 10V, VRUNS/SS = 10V, VBOOST = 15V, VBIAS = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage ● 3 3.6 V Quiescent Current from VIN VRUN/SS = 0.2V 0.01 0.5 μA VBIAS = 3V, Not Switching ● 22 60 μA VBIAS = 0, Not Switching 75 120 μA Quiescent Current from BIAS VRUN/SS = 0.2V 0.01 0.5 μA VBIAS = 3V, Not Switching ● 50 120 μA VBIAS = 0, Not Switching 0 5 μA Minimum Bias Voltage 2.7 3 V Feedback Voltage 1.25 1.265 1.29 V ● 1.24 1.265 1.3 V FB Pin Bias Current (Note 3) VFB = 1.25V, VC = 0.4V ● 30 100 nA FB Voltage Line Regulation 4V < VIN < 34V 0.002 0.02 %/V Error Amp GM 330 μMho Error Amp Gain 800 VC Source Current 65 μA VC Sink Current 85 μA VC Pin to Switch Current Gain 3.5 A/V VC Clamp Voltage 2 V 3681f 2