lt3663 Linear Technology Corporation, lt3663 Datasheet
lt3663
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lt3663 Summary of contents
Page 1
... Internal compensation and boost diode minimize the number of external exponents. The LT3663 is available in an 8-lead (2mm × 3mm) package with an exposed pad for low thermal resistance. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation ...
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... Pins ..................................................6V OUT SENSE RUN Pin (Note 2) ......................................................60V Operating Junction Temperature Range (Note 3) LT3663E ............................................. –40°C to 125°C LT3663I .............................................. –40°C to 125°C Storage Temperature .............................. –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3663EDCB#PBF LT3663EDCB#TRPBF LT3663IDCB#PBF LT3663IDCB#TRPBF Consult LTC Marketing for parts specifi ...
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... RUN pins is 60V for IN nonrepetitive 1 second transients. Note 3: The LT3663E is guaranteed to meet performance specifi cations from 0°C to 125°C. Specifi cations over the –40°C to 125°C operating temperature range are assured by design, characterization, and correlation TYPICAL PERFORMANCE CHARACTERISTICS ...
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... LT3663 TYPICAL PERFORMANCE CHARACTERISTICS RUN Pin Current RUN PIN VOLTAGE (V) 3663 G11 Switching Frequency 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 –50 – 100 TEMPERATURE (°C) 3663 G02 Switch Voltage Drop 400 125°C 350 25°C 300 250 – ...
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... IN internal regulator and internal power switch. Capacitively bypass the pin to ground. RUN (Pin 2): The Run pin is used to put the LT3663 into shutdown mode. Tie to ground to shut down the LT3663. Tie to 2.5V or more for normal operation. If the shutdown feature is not used, connect this pin (Pin 3): The LT3663 regulates the FB pin to 0 ...
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... This regulator includes input undervoltage and overvoltage protection which disables switching action when the error C of range. When switching is disabled, the LT3663 safely sustains input voltages up to 60V. Note that while switching voltage. The error C is disabled the output will discharge. ...
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... V IN 45V rated Schottky even when V Input Capacitor Bypass the input of the LT3663 circuit with a 1μF or higher value ceramic capacitor of X7R or X5R type. Y5V types have 3663 F02 poor performance over temperature and applied voltage and are not recommended. If the input power source has high impedance, or there is signifi ...
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... BOOST LT3663 I SENSE V V OUT (4a) For V > 2.8V OUT V V BOOST LT3663 I SENSE V OUT (4b) For 2.5V < V < 2.8V OUT BOOST LT3663 I SENSE V V OUT 3663 F04 < 2.5V 25V OUT IN(MAX) OUT D3 V OUT OUT 3663fa ...
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... C1. Make the SW and BOOST nodes as small as possible. Include vias near the exposed GND pad of the LT3663 to help remove heat from the LT3663 to the ground plane. High Temperature Considerations The die temperature of the LT3663 must not exceed the maximum rating of 125° ...
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... LT3663 0.22μF 4.7μ OFF RUN I SENSE I V LIM OUT R R1 ILIM 28.7k 49. GND 100k 3663 TA05 2.5V Step-Down Converter V BOOST LT3663 1μ RUN 3.3μH I SENSE I V LIM OUT R1 ILIM 210k FB R2 GND 100k 3663 TA04 L 3.3μH V OUT 1.2V C2 1.2A 22μF ...
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... ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE LT3663 0.40 ± 0.10 TYP 5 8 1.35 ±0.10 1.65 ± ...
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... LT3663 TYPICAL APPLICATION 3.3V Step-Down Converter BOOST IN 7.5V TO 36V C1 LT3663 4.7μ OFF RUN I SENSE I V LIM OUT R ILIM 28.7k FB GND 3663 TA03 D1: DIODES INC, DFLS240 L: TDK, VLCF5020T-4R7N1R7-1 RELATED PARTS PART NUMBER DESCRIPTION LT1766 60V, 1. 200kHz, High Effi ciency Step-Down DC/DC Converter OUT ...