ap3409 BCD Semiconductor Manufacturing Limited, ap3409 Datasheet
ap3409
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ap3409 Summary of contents
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... High Efficiency Synchronous Buck Converter General Description The AP3409 is a current mode, PWM synchronous buck DC/DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. It operates in continuous PWM mode. The AP3409 integrates synchronous P-channel and N-channel power MOSFET switches with low on-resistance ...
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... High Efficiency Synchronous Buck Converter Pin Configuration SHDN/RT PGND Figure 2. Pin Configuration of AP3409 (Top View) Pin Description Pin Pin Name Number 1 SHDN/RT 2 GND PGND 6, 7 PVDD 8 VDD COMP Jul. 2010 Rev Package (DFN-3×3-10) Pin 1 Dot ...
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... High Efficiency Synchronous Buck Converter Functional Block Diagram Figure 3. Functional Block Diagram of AP3409 Jul. 2010 Rev Preliminary Datasheet BCD Semiconductor Manufacturing Limited 3 AP3409 ...
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... Symbol PVDD COMP θ STG T LEAD BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet AP3409 G1: Green TR: Tape & Reel Packing Type Green Tape & Reel Value Unit - 110 º ...
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... No Switching Shutdown, I SHDN V =5. Rising UVLO DD V HUVLO =5.5V SHDN/ BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet AP3409 Max Unit 5 125 ºC Min Typ Max Unit 2.6 5.5 V µA 460 µA 1 2.2 V 300 mV 0.784 0.8 0.816 V µA 0.1 0.4 Ω 0.2 µ ...
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... FB I =500mA PDSON SW I =-500mA NDSON SW V =2 OUT V =2.5V OUT V =2.7 to 5.5V DD LNR I =100mA OUT LOD I =0. OUT =10mA OUT T OTSD T HYS 6 Preliminary Datasheet AP3409 Typ Max Unit 0.8 0.84 0.8 1 1.2 0.3 4 3.2 4.2 0.11 0.16 0.11 0.17 V -0 0.4 ±0.2 1.5 160 20 BCD Semiconductor Manufacturing Limited V MHz MHz % A Ω Ω ...
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... V =0.75V FB 100 -60 5.5 6.0 Figure 5. Supply Current vs. Ambient Temperature 140 120 100 80 =2.5V OUT V =5. =3.3V IN -60 3000 3500 Figure 7. PMOS ON Reisistance vs. 7 Preliminary Datasheet AP3409 V =3. =0.75V FB - 120 o Ambient Temperature ( C) V =3. =0.75V FB - 120 O Ambient Temperature ( ...
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... V =3. =0.85V FB 0.7 90 120 150 - Figure 9. Frequency vs. Ambient Temperature =3. =2.5V OUT 2 120 150 -60 Figure 11. Current Limit vs. Ambient Temperature 8 Preliminary Datasheet AP3409 V =3. =2.5V OUT - 120 O Ambient Temperature ( =3. =0.75V FB - 120 O Ambient Temperature ( C ) BCD Semiconductor Manufacturing Limited ...
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... Jul. 2010 Rev (AC) OUT 50mV/div I OUT 1A/div Figure 13. Load Transient Response =3A OUT 1V/div I OUT 1A/div Figure 15. Short Circuit Recovery BCD Semiconductor Manufacturing Limited 9 Preliminary Datasheet AP3409 Time 200µs/div =3.3V, V =2.5V, I =0.5 to 3A) OUT OUT Time 4ms/div (V =3.3V, V =2.5V) IN OUT ...
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... Typical Application 330k OSC SHDN/RT GND SW PGND Jul. 2010 Rev 30k COMP COMP FB VDD PVDD C1 22pF 2.0 H Figure 16. Typical Application of AP3409 10 Preliminary Datasheet AP3409 C 1000pF COMP R2 240k R1 510k V OUT 2.5V/3A C OUT 22 F ×2 BCD Semiconductor Manufacturing Limited ...
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... High Efficiency Synchronous Buck Converter Mechanical Dimensions Jul. 2010 Rev Preliminary Datasheet DFN-3×3-10 BCD Semiconductor Manufacturing Limited 11 AP3409 Unit: mm(inch) ...
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... BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. ...