lt3463a Linear Technology Corporation, lt3463a Datasheet
lt3463a
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lt3463a 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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... V REF V FB1 1.24 1.23 1.22 –50 – 100 125 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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... R1 + 1.25V A1 SWITCHER 1 LT3463 0 LT3463A 0 0.063 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 ...
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... Inductor Selection—Inverting Charge Pump Regulator For the inverting regulator, the voltage seen by the internal = 250mA power switch is equal to the sum of the absolute value of LIM the input and output voltages, so that generating high IN LT3463/LT3463A V V OUT D t OFF I LIM = 0 ...
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... LT3463/LT3463A U U APPLICATIO S I FOR ATIO output voltages from a high input voltage source will often exceed the 50V maximum switch rating. For instance, a 12V to – 40V converter using the inverting topology would generate 52V on the SW pin, exceeding its maximum rating. For this application, an inverting charge pump is the best topology ...
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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 ...