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| FX5545G108 Vishay The Smallest and Low Profile 0.9V to 4.5V*, 4A with 570W/in3 Power Density Efficiency up to 95% DC/DC Buck Converter FEATURES * Fully integrated DC/DC converter * High efficiency over large load range * 100% duty cycle * Power density - more than 570W/inch3 * 1A shutdown current * 2.5V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells) * 0.9V 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 15W * Maximum current 4A * Low profile * Note: For higher output voltage 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 utilizing 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, PDA's 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 FUNCTION SIZE CIRCUIT IDENTIFIER OUTPUT VOLTAGE - Example: 3.3V should be written as 3V3 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. For lead (Pb)-free solder please add E2 suffix. 5545 G108 Document Number: 10131 Revision: 21-Jan-05 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 39 FX5545G108 Vishay DIMENSIONS in inches [millimeters] A C A L W A B C T Ball Diameter 0.58 0.01 [14.7 0.25] 0.48 0.01 [12.2 0.25] 0.1 0.01 [2.54 0.25] 0.09 0.01 [2.29 0.25] 0.09 0.01 [2.27 0.25] 0.126 max [3.2 max] 0.03 0.001 [0.762 0.025] T W PIN CONFIGURATION* BOTTOM SIDE PIN 1, 2 20 19 18 17 16 15 14 13 12 11 10 9 8 4 7 3 6 2 5 1 B CONNECTION SD SYNC** N/C Vin PWM/PSM N/C GND Vout N/C GND 3, 7 Marked on Upper Side 4, 8 5, 9 6, 10 11, 12 13, 17 Note: * Pin Description application note is available at www.vishay.com/doc?10119 For adjustable version please refer to Self Selectable Output Voltage application note which is available at www.vishay.com/doc?10116 Note: ** If not used must be connected to Vin. 14, 18 15, 19 16, 20 RECOMMENDED PAD PATTERN in inches [millimeters] D A D F A 0.1 0.01 [2.54 0.25] 0.03 0.001 [0.8 0.02] 0.02 0.001 [0.5 0.02] F 1A TAPE AND REEL See Tape and Reel Information - Type B www.vishay.com 40 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com Document Number: 10131 Revision: 21-Jan-05 FX5545G108 Vishay STANDARD ELECTRICAL SPECIFICATIONS PARAMETER Input Voltage Range Quiescent Current Soft Start Time SD, PWM/PSM,SYNC Logic High Logic Low Normal Mode PSM Mode Shutdown Mode Shutdown Time Insulation Test Voltage Resistance Leakage Current Output Power Voltage Voltage Tolerance Temp. Coefficient Ripple and Noise General Package Weight Oscillator Frequency SYNC Range Temperature Operation Storage Operating Junction Temp. Thermal Impedance *Note: WD = Power Dissipated C C C C/WD* Tj JA - 40 - 55 150 82 + 85 + 125 KHz FSYNC/FOSC 1.2 400 1.5 gr. 1.4 W VDC % %/C mVpp DC to 20 MHz 65 at 25 C Ambient Temperature -3 15 0.9 to 4.5 +3 0.03 VAC nA 60Hz 60sec VISO = 500 VDC VISO = 500 VDC 750 1 x 1011 5 V V VH VL IDD IDD IDD TSS 5.5 2.4 0.8 750 250 1 VDC 2.5 PSM mode TSS 200 6 6 UNIT CONDITION MIN TYP MAX A ms A A A ms Document Number: 10131 Revision: 21-Jan-05 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 41 FX5545G108 Vishay Rise Time Fall Time Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 4A Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 4A Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1A Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1A Rise Time (PWM mode): Vin = 4V; Vout = 3.3V; lout = 4A Fall Time (PWM mode): Vin = 4V; Vout = 3.3V; lout = 4A Rise Time (PWM mode): Vin = 4V; Vout = 3.3V; lout = 1A www.vishay.com 42 Fall Time (PWM mode): Vin = 4V; Vout = 3.3V; lout = 1A Document Number: 10131 Revision: 21-Jan-05 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com FX5545G108 Vishay PWM MODE Vout Vs. lout* Vin = 4V 3.5 3.45 3.4 3.35 3.3 3.25 3.2 3.15 3.1 3.05 3 3.5 3.45 3.4 3.35 3.3 3.25 3.2 3.15 3.1 3.05 3 3 3.5 4 4.5 5 5.5 6 Vout Vs. Vin* Vout (V) 0 0.5 1 1.5 2 2.5 3 3.5 4 Vout (V) lout = 1A lout = 3A lout = 4A 4.5 6.5 7 7.5 lout (A) Vin (V) Temp Vs. lout* Above 25C Ambient Temperature Vin = 6.0V; Vout = 3.3V 100 90 80 70 60 50 40 30 20 10 0 0 0.5 1 1.5 2 lout (A) 2.5 3 3.5 4 4.5 100 95 90 85 80 75 70 65 60 0 Efficiency Vs. lout* Vout = 3.3V Efficiency (%) Temp (C) Vin = 4.0V Vin = 5.0V 0.5 1 1.5 2 2.5 3 3.5 4 4.5 lout (A) Vout Vs lout* Vin = 4V 1.5 1.45 1.4 1.35 1.3 1.25 1.2 1.15 1.1 1.05 1 1.5 1.45 1.4 1.35 1.3 1.25 1.2 1.15 1.1 1.05 1 2 2.5 Vout Vs. Vin* Vout (V) Vout (V) lout = 1A lout = 3A lout = 4A 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 3 3.5 4 4.5 5 5.5 6 6.5 lout (V) Vin (V) Temp Vs. lout* Above 25C Ambient Temperature Vin = 6.0V; Vout = 1.2V 100 90 80 70 60 50 40 30 20 10 0 100 90 Efficiency Vs. lout* Vout = 1.2V Efficiency (%) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 80 70 60 50 40 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Temp (C) lout (A) lout (A) *Note: Measurements were taken with Power supply: ZUP 20-40 from Nemic Lambda; Electronic load: 6063B from Agilent; Multimeter: Fluke 45 from Fluke and 34401 digital multimeter from Agilent; Scope: Infiniium 54815A from Agilent. Document Number: 10131 Revision: 21-Jan-05 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 43 FX5545G108 Vishay PSM MODE Vout Vs. lout* Vin = 4V 3.5 3.45 3.4 3.35 3.3 3.25 3.2 3.15 3.1 3.05 3 0 0.05 0.1 lout (A) 0.15 0.2 0.25 3.5 3.45 3.4 3.35 3.3 3.25 3.2 3.15 3.1 3.05 3 3 3.5 4 4.5 5 Vin (V) Vout Vs. Vin* Vout (V) Vout (V) lout = 0.1A lout = 0.15A 5.5 6 6.5 Efficiency Vs. lout* Vin = 4.0V; Vout = 3.3V 100 90 80 70 60 50 40 30 20 10 0 Efficiency (%) 0 0.05 0.1 0.15 Iout (A) 0.2 0.25 *Note: Measurements were taken with Power supply: ZUP 20-40 from 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 44 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com Document Number: 10131 Revision: 21-Jan-05 |
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