LTC3127EDD#TRPBF Linear Technology, LTC3127EDD#TRPBF Datasheet
LTC3127EDD#TRPBF
Specifications of LTC3127EDD#TRPBF
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LTC3127EDD#TRPBF Summary of contents
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... DFN packages and 12-lead MSOP packages. L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks and PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
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... EXPOSED PAD (PIN 11) IS PGND, MUST BE SOLDERED TO PCB orDer inForMaTion LEAD FREE FINISH TAPE AND REEL LTC3127EDD#PBF LTC3127EDD#TRPBF LTC3127EMSE#PBF LTC3127EMSE#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. ...
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T PARAMETER Input Operating Range Output Voltage Adjust Feedback Voltage Feedback Input Current Quiescent Current—Burst Mode Operation Quiescent Current—Shutdown Quiescent Current—Active Input Current Limit Peak Current Limit Reverse-Current Limit P-Channel MOSFET Leakage ...
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LTC3127 Typical perForMance characTerisTics Efficiency vs Load Current 100 PWM V = 1.8V OUT 90 80 BURST ...
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Typical perForMance characTerisTics Feedback Voltage vs Temperature (Normalized) 0. 4.7µ 3.3V OUT V = 3.6V IN 0.00 –0.20 –0.40 –0.60 –0.80 –50 –30 – TEMPERATURE (°C) 3127 G09 PMOS ...
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LTC3127 Typical perForMance characTerisTics Load Transient Response in Burst Mode Operation, No Load to 1A, Not in Input Current Limit I LOAD 1A/DIV I IN 1A/DIV V OUT 50mV/DIV MODE 5V/DIV 200µs/DIV OUT R = ...
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FuncTions (DD Package) SW1 (Pin 1): Switch Pin Where Internal Switches A and B Are Connected. Connect inductor from SW1 to SW2. Minimize trace length to reduce EMI. V (Pin 2): Input Supply Pin. Internal V IN 10μF or ...
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LTC3127 block DiagraM – PEAK AMP SHDN MODE SAMPLE/HOLD AND RESET PROG V CLAMP R PROG L SW1 SW2 I ZERO AMP PWM COMPARATOR + AND LOGIC – V OUT ...
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The LTC3127 is an average input current controlled buck- boost DC/DC converter offered in both a thermally enhanced 3mm × 3mm DFN package and a thermally enhanced 12- lead MSOP package. The buck-boost converter utilizes a proprietary switching algorithm ...
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LTC3127 operaTion Integral compensation is required if an output capacitor less than 1000µF but greater than 44µF is used, otherwise using proportional compensation is recommended. When compensating the converter with integral compen- sation it is important to consider that the ...
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The input current limit is set by the R on the PROG pin to SGND. The resistor value can be calculated using the following formula 54.92 • I (A) + 4.94 (kΩ) PROG LIMIT Where I is ...
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LTC3127 applicaTions inForMaTion A typical LTC3127 application circuit is shown on the front page of this data sheet. The external component selection is determined by the desired output voltage, input current and ripple voltage requirements for each particular applica- tion. ...
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Output and Input Capacitor Selection When selecting output capacitors for large pulsed loads, the magnitude and duration of the pulse current, together with the droop voltage specification, determine the choice of the output capacitor. Both the ESR of ...
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LTC3127 applicaTions inForMaTion Capacitor Selection Example In this example, a pulsed load application requires that V droops less than 300mV. The application is a Li-Ion OUT battery input to a 3.6V output. The pulsed load is a no-load to a ...
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PCB Layout Considerations The LTC3127 switches large currents at high frequencies. Special care should be given to the PCB layout to ensure stable, noise-free operation. Figure 4 depicts the recom- mended PCB layout to be utilized for the ...
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LTC3127 Typical applicaTions V IN USB PWM BURST OFF ON C1, C2: VISHAY TANTAMOUNT TANTALUM, LOW ESR CAPACITORS L1: COILCRAFT XPL4020-472ML PCMCIA/Compact Flash (3.3V or 5V/500mA Max), 3.8V GPRS, Class 10 Pulsed Load PWM BURST ...
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Typical applicaTions Stacked Supercapacitor Charger (1000mA Max Input Current 1.8V to 5.5V PWM BURST OFF ON L1: COILCRAFT XPL4020-472ML General Purpose Forced Continuous Conduction Application with 500µs Start- 4.3V PWM BURST OFF ON 10µF ...
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LTC3127 package DescripTion 3.55 0.05 1.65 0.05 2.15 0.05 (2 SIDES) 0.25 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (SEE NOTE 6) 0.200 REF NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION ...
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... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... V : 2.4V to 5.25V 35µA, IN OUT Q : 1.8V to 5.5V 1.8V to 5.25V 40µA, IN OUT Q : 2.4V to 5.5V 1.8V to 5.25V 35µA, IN OUT Q : 2. 1. 25µA, IN OUT Q LT 0210 • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2010 < 1µA, SD < 1µA, SD < 1µA, SD 3127f ...