LT3467 LINER [Linear Technology], LT3467 Datasheet
LT3467
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LT3467 Summary of contents
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... SEPIC design. The LT3467A can generate 430mA from a 3.3V supply or 15V at 135mA from a 3.3V supply. The LT3467/ LT3467A are available in a low profi le (1mm) 6-lead SOT-23 package and tiny 3mm × ...
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... LT3467AES6#PBF LT3467AES6#TRPBF LT3467AIS6#PBF LT3467AIS6#TRPBF LEAD BASED FINISH TAPE AND REEL LT3467EDDB LT3467EDDB#TR LT3467IDDB LT3467IDDB#TR LT3467AEDDB LT3467AEDDB#TR LT3467AIDDB LT3467AIDDB#TR LT3467IS6 LT3467IS6#TR LT3467ES6 LT3467ES6#TR LT3467AES67 LT3467AES6#TR LT3467AIS67 LT3467AIS67#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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... Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3467E/LT3467AE are guaranteed to meet performance specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. The LT3467IS6 is guaranteed and tested over the full – ...
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... G02 Oscillator Frequency vs Temperature 2.50 2.25 2.00 1.75 = 25°C A 1.50 LT3467 1.25 1.00 0.75 0.50 0.25 0 3467 G05 –50 – TEMPERATURE (°C) Start-Up Waveform (Figure 2 Circuit) V SHDN 2V/DIV V OUT 1V/DIV I SUPPLY 0.5A/DIV 450 500 0.5ms/DIV 3467 G08 3467 G03 LT3467A 50 75 100 3467 G06 3467 G09 3467afd ...
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... SHDN (Pin 8/Pin 4): Shutdown Pin. Tie to 2.4V or more to enable device. Ground to shut down. 250k + COMPARATOR – A1 – RAMP GENERATOR FB 1.3MHz OSCILLATOR* *2.1MHz FOR LT3467A Figure 1. Block Diagram LT3467/LT3467A SW DRIVER 0.01Ω – GND 3467 F01 3467afd 5 ...
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... Typical values for the soft-start capacitor range from 10nF to 200nF . The LT3467 has a current limit circuit not shown in the Block Diagram. The switch current is constantly monitored and not allowed to exceed the maximum switch current (typically 1 ...
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... C1, C2: X5R OR X7R, 6.3V D1: ON SEMICONDUCTOR MBRM120 L1: SUMIDA CR43-2R7 www.sumida.com www.tdk.com www.murata.com www.fdk.co.jp V OUT 1V/DIV I SUPPLY 0.5A/DIV V OUT 1V/DIV I SUPPLY 0.5A/DIV LT3467/LT3467A V OUT 5V 765mA 4.2V, IN 540mA 3.3V, IN 360mA 2. 3.3pF C2 15μF 3467 TA05a Supply Current of Figure 2 During Start-Up Without Soft-Start Capacitor 3467 AI01 0 ...
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... Figure more damped response and less overshoot. Diode Selection A Schottky diode is recommended for use with the LT3467 and the LT3467A. The Philips PMEG 2005 is a very good www.t-yuden.com choice. Where the switch voltage exceeds 20V, use the PMEG 3005 (a 30V diode). Where the switch voltage www ...
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... A good value for R2 is 13.3k which sets the current in the resistor divider chain to 1.255V/13.3k = 94μA. Layout Hints The high speed operation of the LT3467/LT3467A demands careful attention to board layout. You will not get adver- tised performance with careless layout. Figure 5a shows the recommended component placement for the ThinSOT package ...
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... Like all other current mode switching regulators, the LT3467/LT3467A needs to be compensated for stable and effi cient operation. Two feedback loops are used in the LT3467/LT3467A: a fast current loop which does not require compensation, and a slower voltage loop which does. Standard Bode plot analysis can be used to under- stand and adjust the voltage feedback loop ...
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... V IN –450 3467 F07 *2.1MHz for LT3467A From Figure 7, the phase is –138° when the gain reaches 0dB giving a phase margin of 42°. This is more than adequate. The crossover frequency is 37kHz OUT 6V R1 275mA 2.7V IN 501k 490mA ...
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... C1: X5R or X7R, 6.3V C2: X5R or X7R, 50V D1: ON SEMICONDUCTOR, MBRM140 L1: SUMIDA CD43-2R7 ±15V Dual Output Converter with Output Disconnect C4 L1 1μF 10μ 1Ω IN 1μF SHDN LT3467 GND R4 D3 1Ω OUT 5V 325mA 400mA 450mA ...
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... D7 8V 270mA R1 113k C7 10μF R2 21k C2 0.1μ 1μF –8V 10mA 3467 TA07a LT3467/LT3467A Start-Up Waveforms 9V OUTPUT 5V/DIV –9V OUTPUT 5V/DIV 18V OUTPUT 10V/DIV I L1 0.5A/DIV 2ms/DIV Start-Up Waveforms 8V OUTPUT 5V/DIV –8V OUTPUT 5V/DIV 23V OUTPUT 10V/DIV I L1 ...
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... C1, C2: X5R OR X7R, 6.3V D1: PHILIPS PMEG 2010 L1: FDK MIP3226D1R5M 3.3V to 15V, 135mA Step-Up Converter L1 D1 6.8μ 3.3V R1 16. 4.7μF SHDN OFF ON LT3467A GND 1.5k 0.047μF C1: X5R OR X7R, 6.3V C2: X5R OR X7R, 16V D1: PHILIPS PMEG 2010 L1: SUMIDA CMD4D13-6R8MC OUT 5V R1 600mA 4. ...
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... TOP MARK (SEE NOTE 6) PACKAGE OUTLINE 0.200 REF S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) 0.95 BSC 0.80 – 0.90 1.00 MAX 0.09 – 0.20 (NOTE 3) LT3467/LT3467A R = 0.115 0.40 0.10 TYP TYP 2.00 0.10 PIN 1 (2 SIDES 0.20 OR 0.25 45 0.56 0.05 CHAMFER (2 SIDES (DDB8) DFN 0905 REV B ...
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... Figure 12V, 270mA Step-Up Converter L1 D1 3.3μ 115k 4.7μF SHDN OFF ON LT3467A GND 0.047μF 13.3k C1: X5R OR X7R, 6.3V C2: X5R OR X7R, 16V D1: PHILIPS PMEG 2010 L1: SUMIDA CDRH4D18-3R3 Figure 12V, 260mA Step-Up Converter RELATED PARTS PART NUMBER DESCRIPTION ...