LTC3100EUD#PBF Linear Technology, LTC3100EUD#PBF Datasheet
LTC3100EUD#PBF
Specifications of LTC3100EUD#PBF
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LTC3100EUD#PBF Summary of contents
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... The LTC3100 is housed in a 16-lead 3mm × 3mm 0.75mm QFN package. , LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 3.3V AT 100mA ...
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... Storage Temperature Range ...................–65°C to 125°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3100EUD#PBF LTC3100EUD#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: STEP-UP CONVERTER which apply over the full operating temperature range. Extended commercial grade: –40°C to 85° 25°C, unless otherwise noted. A PARAMETER CONDITIONS N-Channel MOSFET Switch- 3.3V BST Resistance P-Channel MOSFET Switch-On V ...
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LTC3100 ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER specifi cations which apply over the full operating temperature range. Extended commercial grade: –40°C to 85° 25°C, unless otherwise noted. A PARAMETER RUNBK Input High Voltage RUNBK Input Low Voltage RUNBK Input ...
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ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3100E is ...
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LTC3100 TYPICAL PERFORMANCE CHARACTERISTICS Step-Up DC/DC Converter No-Load Input Current Mode = Open, LDO and Buck Off 180 160 140 120 100 OUT 3. 1.8V ...
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TYPICAL PERFORMANCE CHARACTERISTICS Step-Up DC/DC Converter Load Step Response, 50mA-150mA Fixed Frequency Mode 10μF BST OUT I OUT 100mA/DIV V BST 50mV/DIV 100μs/DIV LDO Regulator Dropout Voltage vs V OUT and Temperature (I = 100mA) OUT 0.250 ...
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LTC3100 TYPICAL PERFORMANCE CHARACTERISTICS Step-Down DC/DC Converter Effi ciency vs Load Current and V for V = 1.2V O 100 0.01 0.1 1 LOAD CURRENT (mA) No-Load Input Current vs ...
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TYPICAL PERFORMANCE CHARACTERISTICS RUN Pin Threshold Voltage 0.625 0.600 RISING 0.575 FALLING 0.550 0.525 0.500 1 1.5 2 2.5 V PIN FUNCTIONS SWBST (Pin 1): Switch Pin for the Boost Converter. Connect the boost inductor between SWBST and V Keep ...
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LTC3100 PIN FUNCTIONS FBLDO (Pin 11): Feedback Input to the g for the LDO Regulator. Connect the resistor divider tap to this pin. The output voltage can be adjusted from 0.6V to 5.25V by: ⎛ ...
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BLOCK DIAGRAM L1, 3.3μ 0.65V TO 5V BATT1 C IN 2.2μ INBST V BST V V BEST V INBK VB GATE V BEST DRIVERS AND ANTI-CROSS CONDUCTION BEST V REF V REF VREF_GD ...
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LTC3100 OPERATION The LTC3100 includes an 700mA synchronous step-up (boost) converter, a 250mA synchronous step-down (buck) converter and a 100mA low dropout (LDO) linear regulator housed in a 16-lead 3mm × 3mm QFN package. Both converters utilize current mode PWM ...
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OPERATION Current Sensing Lossless current sensing converts the peak current signal of the N-channel MOSFET switch into a voltage which is summed with the internal slope compensation. The summed signal is compared to the error amplifi er output to provide ...
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LTC3100 OPERATION buck converters. In this case, both converters will remain in fi xed frequency operation, even at light load currents. If the load is very light, they will exhibit pulse-skip operation. If MODE is raised above 0.9V, or left ...
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OPERATION Dropout Operation As the input voltage decreases to a value approaching the output regulation voltage, the duty cycle increases toward the maximum on-time. Further reduction of the supply voltage will force the main switch to remain on for more ...
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LTC3100 OPERATION LDO REGULATOR OPERATION The LDO regulator utilizes an internal 1.3Ω (typical) P-channel MOSFET pass device to supply up to 100mA of load current with a typical dropout voltage of 130mV. The input voltage to the LDO is internally ...
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APPLICATIONS INFORMATION PC Board Layout Guidelines The LTC3100 switches large currents at high frequen- cies. Special care should be given to the PC board layout to ensure stable, noise-free operation. You will not get advertised performance with a careless layout. ...
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LTC3100 APPLICATIONS INFORMATION COMPONENT SELECTION Boost Output Voltage Programming The boost output voltage is set by a resistive divider ac- cording to the following formula: ⎛ ⎞ 200 . V • 1 ⎝ ⎜ ...
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APPLICATIONS INFORMATION Low ESR input capacitors reduce input switching noise and reduce the peak current drawn from the battery. It follows that ceramic capacitors are also a good choice for input decoupling and should be located as close as pos- ...
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LTC3100 APPLICATIONS INFORMATION Table 4. Recommended Buck Inductors VENDOR Coilcraft LPS3008, LPS3010, LPS3015 (847) 639-6400 www.coilcraft.com Coiltronics SD3114, SD3118, SD3112 FDK MIPF2016 MIPF2520, MIPS2520 Murata LQH32C www.murata.com LQM31P Sumida CDRH2D11, CDRH2D09 (847) 956-0666 CMD4D06-4R7MC www.sumida.com CMD4D06-3R3MC Taiyo-Yuden NR3010, NR3012 www.t-yuden.com ...
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APPLICATIONS INFORMATION LDO Output Capacitor Selection The LDO is designed to be stable with a minimum 1μF output capacitor. No series resistor is required when using low ESR capacitors. For most applications, a 2.2μF ceramic capacitor is recommended. Larger values ...
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LTC3100 TYPICAL APPLICATIONS Li-Ion Input, Triple Output Converter L1 3.3μ 2. SWBST V V INBK BST Li-Ion 16 12 FBBST V INBST C IN 4.7μ LDO LTC3100 11 FBLDO 13 MODE ...
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... ON THE TOP AND BOTTOM OF PACKAGE 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. UD Package 16-Lead Plastic QFN (3mm × ...
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... OUT(RANGE 2.4V to 5.25V 35μA, I < 1μA, OUT(RANGE 5.5V 30μA, I < 1μA, OUT(MAX 1.5V to 5.5V 35μA, I < 1μA, OUT(RANGE 0.8V 70μA, I < 1μA, OUT(MIN 0.6V 58μA, I < 1μA, OUT(MIN 1108 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 3100fa ...