for technical questions, contact functionpak@vishay.com for marketing questions, contact functionpak.marketing@vishay.com document number: 10112 revision 27-nov-02 www.vishay.com 20 fx5545g005 vishay features fully integrated dc/dc converter high efficiency over large load range 100% duty cycle power density - more than 100w/inch 3 1ua shutdown current 2.7v to 6v input range (1li+ and 3-cell nicd or nimh cells) 1.8v to 3.3v output voltage programmable pwm/psm controls low output ripple bga/lga construction temperature range: - 40 c to + 85 c no external components needed output power 5w maximum current 1.5a low profile 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 utilizing various battery configurations and chemistries such as nicd, nimh, or li+ with an input voltage range of 2.7v 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 sychronous 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 fx 5545 g005 function size circuit identifier output voltage-example: 2.7v should be written as 2v7 as the v indicates the decimal point, or adj for adjustable version - self selectable output voltage. packaging-b1 = 10pcs in bulk; b5 = 50pcs in bulk; t1 = 13?reel; t2 = 7?reel. ordering information application cordless phones, pdas and others supply voltage source for low-voltage chip sets portable computers battery back-up supplies cameras routers fiber optics lans image processing industry smallest and low profile 5w 1.5a dc/dc buck converter with high output density power requirements, the dc/dc converter is designed to handle the industrial temperature range of - 40 c to + 85 c.
for technical questions, contact functionpak@vishay.com for marketing questions, contact functionpak.marketing@vishay.com www.vishay.com 21 fx5545g005 vishay document number: 10112 revision 27-nov-02 dimensions in inches [millimeters] t a c l b a w 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 0.12 max [3 max] marked on upper side d f a a ad f 0.1 0.01 0.03 0.001 0.02 0.001 [2.54 0.25] [0.8 0.02] [0.5 0.02] pin connection 1, 2 sd 3, 7 sync** 4, 8 n/c 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* bottom side 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 see tape and reel information - type b tape and reel *note: pin description application note is available on page 32. **note: if not used must be connected to vin. recommended pad pattern in inches [millimeters]
for technical questions, contact functionpak@vishay.com for marketing questions, contact functionpak.marketing@vishay.com document number: 10112 revision 27-nov-02 www.vishay.com 22 fx5545g005 vishay parameter unit condition min typ max input voltage range v dc 2.7 6 insulation test voltage v ac 60hz 60sec 750 resistance ? v iso = 500v dc 1 x 10 11 leakage current na v iso = 500v dc 5 output power w 5 voltage v dc 1.8 to 3.3 voltage tolerance % at 25 c ambient temperature - 5 + 5 temp. coefficient %/ c 0.03 ripple and noise mvpp dc to 20mhz 100 general package weight gr. 1.5 temperature operation c - 40 + 85 storage c - 55 + 125 standard electrical specifications vout (v) vout vs. iout vin = 3.6v iout (a) 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3 3.05 3.1 3.15 0.5 1 1.5 02 vout vs. vin vin (v) vout (v) 3.2 3.25 3.3 3.35 3.4 3.45 3.5 34 5 6 3 3.05 3.1 3.15 iout = 0.5a iout = 1.5a efficiency (%) efficiency vs. iout vout = 3.3v; vin = 3.6v iout (a) 40 50 60 70 80 90 100 0 0.5 1 1.5 2 0 10 20 30 ? temp ( c) ? temp. vs. iout above 25 c ambient temperature; for vout = 3.3v; vin = 6v iout (a) 15 20 25 30 0 5 10 0.5 1 1.5 02
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