LTC3407EDD-4#PBF Linear Technology, LTC3407EDD-4#PBF Datasheet
LTC3407EDD-4#PBF
Specifications of LTC3407EDD-4#PBF
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LTC3407EDD-4#PBF Summary of contents
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... The LTC3407-4 is identical to the LTC3407-2 except for the reduced power-on reset delay time. L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131 ...
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... JA EXPOSED PAD (PIN 11) IS PGND, MUST BE SOLDERED TO GND ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3407EDD-4#PBF LTC3407EDD-4#TRPBF LTC3407EMSE-4#PBF LTC3407EMSE-4#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. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER f Oscillator Frequency OSC f Synchronization Frequency SYNC I Peak Switch Current Limit LIM R Top Switch On-Resistance DS(ON) Bottom Switch On-Resistance I Switch Leakage Current SW(LKG) POR ...
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LTC3407-4 TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Input Voltage 100 95 LOAD = 100mA LOAD = 10mA 90 85 LOAD = 800mA 80 LOAD = 1mA 1.8V 55 OUT Burst Mode OPERATION 50 2 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Load Current 100 1.2V OUT 10 Burst Mode OPERATION NO LOAD ON ...
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LTC3407-4 BLOCK DIAGRAM REGULATOR 1 MODE/SYNC 6 + 0.6V EA – FB1 – 0.55V UVDET + + OVDET – 0.65V SHUTDOWN 2 RUN1 0.6V REF OSC 9 RUN2 REGULATOR 2 (IDENTICAL TO REGULATOR FB2 OPERATION ...
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OPERATION decrease causes the error amplifi increase the I voltage until the average inductor current matches the new load current. The main control loop is shut down by pulling the RUN pin to ground. Low Current Operation Two ...
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LTC3407-4 APPLICATIONS INFORMATION begins when the peak inductor current falls below a level set by the burst clamp. Lower inductor values result in higher ripple current which causes this to occur at lower load currents. This causes a dip in ...
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APPLICATIONS INFORMATION Panasonic Special Polymer (SP), and Kemet A700, of- fer very low ESR, but have a lower capacitance density than other types. Tantalum capacitors have the highest capacitance density, but they have a larger ESR and it is critical ...
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... It is often useful to analyze individual losses to determine what is limiting the effi ciency and which change would Hot Swap is a trademark of Linear Technology Corporation. immediately shifts by an OUT • ESR, where ESR is the effective LOAD . Δ ...
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APPLICATIONS INFORMATION produce the most improvement. Percent effi ciency can be expressed as: %Effi ciency = 100 ...) where L1, L2, etc. are the individual losses as a percent- age of input power. ...
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LTC3407-4 APPLICATIONS INFORMATION the regulator operating in a 70°C ambient temperature is approximately • 0.272 • 94.5°C J which is below the absolute maximum junction tempera- ture of 125°C. Design Example As a ...
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TYPICAL APPLICATIONS Low Ripple Buck Regulators Using Ceramic Capacitors V IN 2.5V TO 5.5V C1 10μF RUN2 V IN LTC3407-4 L2 4.7μH V OUT2 1.8V SW2 C5, 22pF 800mA V FB2 R4 MODE/SYNC C3 R3 887k 10μF 442k C1, C2, ...
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LTC3407-4 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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... Synchronous Step Down DC/DC Converter LTC3414 4MHz, OUT Synchronous Step Down DC/DC Converter LTC3440 600mA (I ), 2MHz, OUT Synchronous Buck-Boost DC/DC Converter ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 2.8V TO 4.2V C1 10μ ...