Datasheet LT3472 (Analog Devices) - 2

制造商Analog Devices
描述Boost and Inverting DC/DC Converter for CCD Bias
页数 / 页12 / 2 — ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL …
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ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS The

ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) ELECTRICAL CHARACTERISTICS The

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LT3472
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
TOP VIEW ORDER PART VIN, SHDN Voltage ... 16V NUMBER SWP, SWN, VPOS Voltage ... 36V SWP 1 10 VPOS DN Voltage .. –36V V 2 9 SSP IN LT3472EDD SHDN 3 11 8 FBP FBP, FBN, SSP, SSN Voltage ... 10V SWN 4 7 SSN Maximum Junction Temperature .. 125°C DN 5 6 FBN Operating Temperature Range DFN PART Extended Commercial ... –40 DD PACKAGE °C to 85°C MARKING 10-LEAD (3mm × 3mm) PLASTIC DFN Storage Temperature Range ... – 65°C to 125°C TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W EXPOSED PAD IS GND (PIN 11) LBGC MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 3V, SHDN = 3V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operation Voltage 2.2 V Maximum Operation Voltage 16 V Supply Current SHDN = 3V, Not Switching 2.8 mA SHDN = 0V 0.1 1 µA SHDN Voltage High ● 0.8 V SHDN Voltage Low ● 0.3 V SHDN Pin Bias Current SHDN = 3V 35 µA Positive Feedback Voltage ● 1.2 1.25 1.3 V Negative Feedback Voltage ● –5 0 5 mV Positive Feedback Voltage Line Regulation 0.01 %/V Negative Feedback Voltage Line Regulation 0.008 mV/V FBP Current FBP = VFBP ● 24.5 25 25.3 µA FBN Current FBN = VFBN ● 24.5 25 25.3 µA FBP to Start Negative Channel 1.02 1.1 1.18 V Switching Frequency 0.9 1.1 1.4 MHz Maximum Duty Cycle (Both Channels) ● 88 92 % Positive Channel Switch Current Limit ● 250 350 mA Negative Channel Switch Current Limit ● 300 400 mA Positive Channel Switch VCESAT ISWP = 200mA 245 mV Negative Channel Switch VCESAT ISWN = 200mA 400 mV Switch Leakage Current (Both Channels) VSW = 5V 0.01 5 µA Schottky DP Forward Drop IDP = 150mA 700 950 mV Schottky DN Forward Drop IDN = 150mA 750 1000 mV Schottky Leakage Current (Both Channels) VR = 36V 4 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life 0°C to 70°C. Specifications over the –40°C to 85°C operating range are of a device may be impaired. assured by design, characterization and correlation with statistical process
Note 2:
The LT3472E is guaranteed to meet specified performance from controls. 3472f 2