LT3463 LINEAR [Linear Integrated Systems], LT3463 Datasheet
LT3463
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LT3463 Summary of contents
Page 1
... DC/DC con- verters with internal Schottky diodes in a 10-lead 3mm 3mm DFN package. Negative and positive LT3463 con- verters have a 250mA current limit. The LT3463A positive converter also has a 250mA limit, while the negative converter has a 400mA limit. Both devices have an input voltage range of 2 ...
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... SHDN2 Pin Current V SHDN2 SHDN1/SHDN2 Start-Up Threshold Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LT3463/LT3463A are guaranteed to meet performance specifications from Specifications over the – PACKAGE/ORDER I FOR ATIO V ...
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... TEMPERATURE ( C) 3463 G02 Switch Current Limit 450 400 LT3463A SW2 350 300 250 LT3463 SW1, SW2 200 LT3463A SW1 150 100 50 0 –50 – 100 125 TEMPERATURE ( C) 3463 G05 D2 (Pin 5): Diode for Switcher 2. This is the anode of an internal Schottky diode whose cathode connected to the GND pin ...
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... OPERATIO The LT3463 uses a constant off-time control scheme to provide high efficiency over a wide range of output cur- rent. Operation can be best understood by referring to the block diagram in Figure 1. When the voltage at the FB1 pin is slightly above 1.25V, comparator A1 disables most of the internal circuitry. Output current is then provided by ...
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... Inductor Selection—Boost Regulator The formula below calculates the appropriate inductor value to be used for a boost regulator using the LT3463 (or at least provides a good starting point). This value pro- vides a good tradeoff in inductor size and system perfor- mance. Pick a standard inductor close to this value. A ...
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... LIM Capacitor Selection The small size and low ESR of ceramic capacitors makes them ideal for LT3463 applications. Use only X5R and X7R types because they retain their capacitance over wider voltage and temperature ranges than other ceramic types input capacitor and a 0. 0.47 F output capacitor are sufficient for most applications ...
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... U DD Package 10-Lead Plastic DFN (3mm 3mm) (Reference LTC DWG # 05-08-1699) 0.675 0.05 PIN 1 PACKAGE TOP MARK OUTLINE (SEE NOTE 6) 0.200 REF 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE LT3463/LT3463A V OUT1 20V R2 9mA 66.5k R3 61.9k R4 ...
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... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 CCD Bias Supply SW1 IN OUT1 90.9k SHDN1 FB1 7 LT3463A V REF SHDN2 FB2 154k GND SW2 C1: TAIYO YUDEN JMK212BJ475MG ...