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| fx5545g008 vishay low profile 3mm dc/dc buck converter 0.8v to 4.5v*, 3a with 380w/in 3 power density efficiency up to 95% www.vishay.com for technical questions, contact function pa k @vishay.com for marketing questions, contact function pa k .marketing@vishay.com document number: 10126 22 revision: 01-mar-05 features ? fully integrated dc/dc converter ? advanced development of fx5545g305 ? high efficiency over large load range ? 100% duty cycle ? power density - more than 380w/inch 3 ? 1a shutdown current ? 2.5v to 6v input range (1li+ and 3-cell nicd or nimh cells) ? 0.8v to 4.5v* output voltage ? programmable pwm/psm controls ? low output ripple ? bga construction ? temperature range: - 40c to + 85c ? no external components required ? output power 10w ? maximum current 3a ? low profile *note: for higher putput voltag e please consult factory at functionpak@vishay.com the dc/dc converter is a programmable topology synchronized buck converter for today?s continuous changing portable electronic market. the dc/dc converter provides flexibility of utilizin g various battery configurations and chemistries such as nicd, nimh, or li+ with an input voltage range of 2.5v to 6v. an additional flexibility is provided with topology programmability to power multiple loads such as power amplifiers, microcontrollers, or baseband logic ic?s. for ultra-high efficiency, converters are designed to operate in synchronous rectified pwm mode under full load while transforming into externally controlled pulse-skipping mode (psm ) under light load. the dc/dc converter is available in 20-ports bga package. in order to satisfy the stringent ambient temperature requirements, the dc/dc converter is designed to handle the industrial temperature range of - 40c to + 85c. application ? cordless phones, pdas and others ? supply voltage source for low-voltage chip sets ? point of load (pol) applications such as drivers for fpga?s, microprocessors, dsp?s amplifiers, etc. ? portable computers ? battery back-up supplies ? cameras ordering information fx 5545 g008 function size circuit identifier - g008 or g018 output voltage - example: 1.2v should be written as 1v2 as the v indicates the decimal point or adj for adjustable version - self selectable output voltage . g018adj is only available in the adjustable version for vout = 0.9v - 1.3v. for desi gn considerations please see anf110 packaging - b1 = 10pcs in bulk; b5 = 50pcs in bulk; t1 = 13? reel; t2 = 7? reel. for lead (pb)-free solder please add e2 suffix.
document number: 10126 for technical questions, contact function pa k @vishay.com for marketing questions, contact function pa k .marketing@vishay.com www.vishay.com revision: 01-mar-05 23 fx5545g008 vishay dimensions in inches [millimeters] l 0.58 0.01 [14.7 0.25] w 0.48 0.01 [12.2 0.25] a 0.1 0.01 [2.54 0.25] b 0.09 0.01 [2.29 0.25] c 0.09 0.01 [2.27 0.25] t 0.126 max [3.2 max] ball diameter 0.03 0.001 [0.762 0.025] *note: pin description applic ation note is available at www.vishay.com/doc?10119 for adjustable version please refer to self selectable output voltage application note which is availa ble at www.vishay.com/doc?10116 **note: if not used must be connected ti vin. ***note: n/c - if the output voltage is 0.9v and higher. for output voltage of 0.8v connect vref to mcl4448 (vishay rf pin diode). bottom side pin configuration* pin connection 1, 2 sd 3, 7 sync** 4, 8 vref*** 5, 9 vin 6, 10 pwm/psm 11, 12 n/c 13, 17 gnd 14, 18 vout 15, 19 n/c 16, 20 gnd pin configuration for vo = 0.8v pin configuration for vo = 0.9v - 4.5v recommended pad pattern in inches [millimeters] adf 0.1 0.01 [2.54 0.25] 0.03 0.001 [0.8 0.02] 0.02 0.001 [0.5 0.02] tape and reel see tape and reel information - type b www.vishay.com for technical questions, contact functionpak @vishay.com for marketing questions, contact functionpak .marketing@vishay.com document number: 10126 24 revision: 01-mar-05 fx5545g008 vishay *note: w d = power dissipated standard electrical specifications parameter unit condition min typ max input voltage range v dc 2.5 6 quiescent current a psm mode 200 soft start time ms t ss for vout = 3.3v 4 t ss for vout = 1.2v 2.6 sd, pwm/psm ,sync logic high v v h 2.4 logic low v v l 0.8 normal mode a i dd 750 psm mode a i dd 250 shutdown mode a i dd 1 shutdown time ms t ss for vout = 3.3v 4 t ss for vout = 1.2v 0.6 insulation te s t vo l t a g e v ac 60hz 60sec 750 resistance v iso = 500 v dc 1 x 10 11 leakage current na v iso = 500 v dc 5 output power w 10 voltage v dc 0.8 to 4.5 voltage tolerance % for vout = 0.9v and above (using external diode bar065v for vout = 0.9v up to 1.3v) at 25c ambient temp. - 3 +3 % for vout = 0.8v up to 1.3v using external diode mcl4448 at 25c ambient temp. - 5 +5 temp. coefficient %/c 0.15 ripple and noise mvpp dc to 20 mhz 80 general package weight gr. 1.4 oscillator frequency khz 400 sync range f sync /f osc 1.2 1.5 temperature operation c - 40 + 85 storage c - 55 + 125 operating junction temp. c t j 150 thermal impedance c/w d * ja 82 rise time rise time (pwm mode): vin = 6v; vout = 3.3v; lout = 3a fall time fall time (pwm mode): vin = 6v; vout = 3.3v; lout = 3a rise time (pwm mode): vin = 6v; vout = 1.2v; lout = 3a fall time (pwm mode): vin = 6v; vout = 1.2v; lout = 3a document number: 10126 for technical questions, contact functionpak @vishay.com www.vishay.com revision: 01-mar-05 25 fx5545g008 vishay pwm mode vout vs. lout* vin = 4.0v vout vs. vin* temp vs. lout* above 25c ambient temperature vin = 6.0v; vout = 3.3v efficiency vs. lout* vout = 3.3a ! " # # " $%% & &'( vout vs. lout* vin = 4.0v vout vs. vin* vin = 6v temp vs. lout* above 25c ambient temperature vin = 6.0v; vout = 1.2v efficiency vs. lout* vin = 4.0v; vout = 1.2v temp ( c) " # efficiency (%) iout (a) * note: measurements were taken with power supply: zup 20-40 fr om nemic lambda; electronic load : 6063b from agilent; multimeter fluke 45 from fluke and 34401 digital multimeter from agilent; scope: infiniium 54815a from agilent www.vishay.com for technical questions, contact function pa k @vishay.com for marketing questions, contact function pa k .marketing@vishay.com document number: 10126 26 revision: 01-mar-05 fx5545g008 vishay vout vs. lout* vin = 4.0v vout vs. vin* vin = 6v efficiency vs. lout* vin = 4.0v; vout = 3.3v " # ) $%% & &'( vout vs. lout* vin = 4.0v vout vs. vin* " efficiency vs. lout* vin = 4.0v; vout = 1.2v " # " ) $%% & &'( psm mode * note: measurements were taken with power supply: zup 20-40 fr om nemic lambda; electronic load: 6063b from agilent; multimeter fluke 45 from fluke and 34401 digital multimeter from agilent; scope: infiniium 54815a from agilent |
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