LTC3459 LINER [Linear Technology], LTC3459 Datasheet
LTC3459
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LTC3459 Summary of contents
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... In shutdown the output is disconnected from the input and quiescent current is reduced to <1 A. The LTC3459 is offered in a low profile (1mm) 6-pin SOT-23 (ThinSOT the total solution. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... SHDN Input Leakage Current Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC3459E is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... V (V) IN Burst Cycle SW CURRENT 50mA/DIV INDUCTOR CURRENT 50mA/DIV V = 3.3V 1 s/DIV OUT LTC3459 ( unless otherwise noted and V Quiescent Current IN OUT vs Temperature 3. OUT OUT 5.5 –40 – 20 ...
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... LTC3459 W U TYPICAL PERFOR A CE CHARACTERISTICS V AC Ripple OUT V OUT 50mV/DIV INDUCTOR CURRENT 50mA/DIV V = 3.3V 5 s/DIV 3459 G10 OUT 4.7 F OUT C = 47pF FF V Regulated Below V Burst OUT IN Cycle SW CURRENT 50mA/DIV INDUCTOR CURRENT 50mA/DIV s/DIV 3459 G13 3.5V OUT ...
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... Regulated Output Voltage of the Boost OUT Regulator. Bypass V capacitor between 2.2 F and with smaller capacitors. V (Pin 6): Input Supply Pin. Bypass V IN ESL ceramic capacitor of at least GND OUT LTC3459 with a low ESR, ESL ceramic OUT ripple increases OUT with a low ESR, IN 3459f 5 ...
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... LTC3459 W BLOCK DIAGRA OFF V OUT TIMER Q S P/~ THERMAL V SELECT N-DRIVE SDB P-DRIVE OFF I PEAK ZERO DETECT SLEEP SD DELAY P-DRIVE BEST I PEAK DETECT HYSTCOMP N-DRIVE GND 2 OFF – SELECT ...
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... Figure 2. Typical I PEAK boost converter disconnects V down to avoid loading the input power source. Peak Current Overshoot The LTC3459’s peak current comparator has a delay above the OUT approximately 100ns from the time inductor current reaches current limit until the internal N-channel MOSFET turns off ...
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... TDK CONTACT INFORMATION PCB Layout Guidlines www.murata.com The high speed operation of the LTC3459 demands careful attention to board layout. You will not get advertised www.t-yuden.com performance with careless layout. Figure 4 shows the recommended component placement. A large ground pin copper area will help to lower the chip temperature. ...
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... V IN OUT 3. LTC3459 1 F OFF ON SHDN FB GND *COILCRAFT DO3314 R ’s will increase. The switching frequency and DS(ON) output power capability of the LTC3459 are also depen- dant on input and output voltages. 5V from Li-Ion Input V OUT V OUT 5V 47pF 1M 4 332k 3459 TA04a 10V from 3. Input ...
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... Peak current control makes the LTC3459 an ideal candidate for charging a back-up source such as a SuperCap. Figure 5 shows an application where the LTC3459 is used to charge a two Farad, 5V supercap from a 3.3V input. A NiCd battery could be charged by the LTC3459 as well, but that application may require additional circuitry for proper charge termination ...
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... U 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) LTC3459 2.90 BSC (NOTE 4) PIN ONE ID 0.30 – 0.45 6 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S6 TSOT-23 0302 11 3459f ...
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... LTC3459 U TYPICAL APPLICATIO OUT 1. 2.2 F LTC3459 OFF ON SHDN FB CELLS GND C1: TDK C1608X5R1A225MT L1: COILCRAFT DO3314-153MXB C2: TDK C0603COG1E470J R1: PANASONIC ERJ3EKF6043V C3: TDK C2012X5ROJ475K R2: PANASONIC ERJ3EKF3653V RELATED PARTS PART NUMBER DESCRIPTION LT1310 1. 4.5MHz, High Efficiency Step-Up DC/DC Converter SW LT1613 550mA ...