LTC3125EDCB-PBF LINER [Linear Technology], LTC3125EDCB-PBF Datasheet
LTC3125EDCB-PBF
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LTC3125EDCB-PBF Summary of contents
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FEATURES n Programmable Average Input Current Limit n 5% Input Current Accuracy n 200mA to 1000mA Program Range 1.8V to 5.5V 5.25V IN OUT n Supports High Current GSM/GPRS Load Burst n V ...
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... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3125EDCB#PBF LTC3125EDCB#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER PROG Current Gain Maximum Duty Cycle Minimum Duty Cycle Frequency SHDN Input High SHDN Input Low SHDN Input Current Note 1: Stresses beyond those listed under Absolute Maximum Ratings ...
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LTC3125 TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Load Current OUT 100 3. 0.001 0.01 0.1 LOAD CURRENT (A) 3125 G03 ...
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TYPICAL PERFORMANCE CHARACTERISTICS DS(ON) OUT 0.450 0.400 0.350 0.300 PMOS 0.250 0.200 NMOS 0.150 0.100 0.050 1.5 2 2.5 3 3.5 4 4.5 V (V) OUT 3125 G12 Feedback vs Temperature 0.50 NORMALIZED TO 25°C 0.25 0 ...
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LTC3125 TYPICAL PERFORMANCE CHARACTERISTICS V and I During Soft-Start OUT IN V OUT 2V/DIV SHDN 5V/DIV INPUT CURRENT 200mA/DIV V = 3.3V 2s/DIV 4.5V OUT OUT L = 2.7μH PIN FUNCTIONS GND (Pin 1): ...
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BLOCK DIAGRAM PROG 3 R PROG SHDN 6 SHUTDOWN OSC THERMAL SHUTDOWN SENSE V BEST – ANTI-RING ...
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LTC3125 OPERATION The LTC3125 provides high effi ciency, low noise power for applications in portable instrumentation and those with pulsed-load, power-limited requirements such as GSM modems. The LTC3125 directly and accurately controls the average input current. The high effi ciency ...
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OPERATION SHUTDOWN Shutdown of the boost converter is accomplished by pulling SHDN below 0.35V and enabled by pulling SHDN above 1V. Note that SHDN can be driven above long limited to less than ...
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LTC3125 APPLICATIONS INFORMATION GSM and GPRS modems have become a popular wireless data transfer solution for use in notebook PCs and other mobile systems. GSM transmission requires large bursts of current that exceed the maximum peak current specifi ca- tions ...
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APPLICATIONS INFORMATION (DC resistance of the windings) to reduce the I losses, and must be able to support the peak inductor current without saturating. Molded chokes and some chip inductors usually do not have enough core area to support the ...
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LTC3125 TYPICAL APPLICATIONS PC Card or CompactFlash (3.3V/500mA Maximum) 4.5V Output, GSM Pulsed Load CARD V CC 3.3V ±10% 500mA MAX Waveforms of Input Current, V INPUT CURRENT LOAD CURRENT PC Card (3.3V/1000mA Maximum) 4.5V Output, GSM ...
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TYPICAL APPLICATIONS PC Card (3.3V/1000mA Maximum) 4.5V Output, GPRS, Class 10 Pulsed Load CARD V CC 3.3V ±10% 1000mA MAX Waveforms of Input Current, V INPUT CURRENT LOAD CURRENT 3.3V ±10% 1000mA MAX Waveforms of Input Current, ...
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LTC3125 TYPICAL APPLICATIONS 2. 500mA MAX LOAD CURRENT 3.3V ±10% 300mA 500mA Waveforms of Input Current, V INPUT CURRENT M1 GATE DRIVE 14 Stacked Supercap Charger 2.2μ OUT 10μF LTC3125 CER ...
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PACKAGE DESCRIPTION 3.50 ±0.05 2.10 ±0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED PIN 1 BAR TOP MARK (SEE NOTE 6) 0.200 REF Information furnished by Linear Technology Corporation is believed to ...
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LTC3125 RELATED PARTS PART NUMBER DESCRIPTION LTC3400/LTC3400B 600mA (I ), 1.2MHz, Synchronous Step-Up DC/DC SW Converters LTC3421 3MHz, Synchronous Step-Up DC/DC Converter with SW Output Disconnect LTC3422 1. 3MHz Synchronous Step-Up DC/DC Converter with SW ...