Datasheet LT3487 (Analog Devices) - 2

LT3487
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VIN Voltage ... 16V TOP VIEW VBAT Voltage ... 16V CAP 1 10 VPOS SWP, SWN Voltage ... 32V SWP 2 9 FBP CAP, VPOS ...30V V 3 11 8 RUN/SS BAT DN Voltage ... –32V SWN 4 7 FBN DN 5 6 V RUN/SS Voltage ..8V IN FBP Voltage .. 6V DD PACKAGE FBN Voltage .. –0.2V to 6V 10-LEAD (3mm × 3mm) PLASTIC DFN θJA = 43°C/W, θJC = 3°C/W Maximum Junction Temperature .. 125°C EXPOSED PAD (PIN 11) IS GND, MUST BE CONNECTED TO PCB Operating Temperature Range ... –40°C to 85°C ORDER PART NUMBER DD PART MARKING Storage Temperature Range ... –65°C to 125°C LT3487EDD LBXB
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.
The ELECTRICAL CHARACTERISTICS
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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 = 3.6V, VBAT = 3.6V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range 2.3 16 V Quiescent Current RUN/SS = 3V, Not Switching 3.7 5 mA RUN/SS = 0V 5.3 8 µA RUN/SS Voltage Threshold (Full Current) (Note 3) 1.6 V RUN/SS Voltage Threshold (Shutdown) ● 100 160 mV RUN/SS Pin Current RUN/SS = 0V (Note 4) 1 1.4 2 µA FBP (Positive Channel) Pin Voltage ● 1.19 1.23 1.27 V FBN (Negative Channel) Pin Voltage ● –7 3 12 mV FBP Pin Voltage Line Regulation 0.007 %/V FBN Pin Voltage Line Regulation 0.001 mV/V FBP Pin Bias Current ● 24.4 25 25.6 µA FBN Pin Bias Current ● 24.4 25 25.6 µA FBP Threshold (Percent of Final Value) 87 90 % to Start Negative Channel Switching Frequency 1.85 2 2.15 MHz Maximum Duty Cycle ● 87 93 % Positive Channel Switch Current Limit (Note 5) ● 750 920 mA Negative Channel Switch Current Limit (Note 5) ● 900 1090 mA Positive Channel VCESAT ISWP = 400mA 280 mV Negative Channel VCESAT ISWN = 600mA 340 mV 3487f 2