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| FX5545G105 Vishay Industry Smallest and Low Profile 6.5W 2.0A DC/DC Buck Converter with High Output Density Power FEATURES * Fully integrated DC/DC converter * High efficiency over large load range * 100% duty cycle * Power density - more than 240W/inch3 * 1uA shutdown current * 2.7V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells) * 1.5V to 3.6V output voltage * Programmable PWM/PSM controls * Low output ripple * BGA/LGA construction * Temperature range: - 40C to + 85C * No external components needed * Output power 6.5W * Maximum current 2.0A * 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 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 Portable computers Battery back-up supplies Cameras Routers Fiber optics LANS Image processing ORDERING INFORMATION FX 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. 5545 G105 Document Number: 10114 Revision 25-Mar-03 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 23 FX5545G105 Vishay DIMENSIONS in inches [millimeters] A L C A W L W A B C T 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] 0.12 max [3 max] T PIN CONFIGURATION* BOTTOM SIDE 20 19 18 17 16 15 14 13 12 11 10 8 4 7 3 6 2 9 5 1 Marked on Upper Side *Note: Pin Description application note is available on page 32. **Note: if not used must be connected to Vin. PIN 1, 2 3, 7 4, 8 5, 9 6, 10 11, 12 13, 17 14, 18 15, 19 16, 20 CONNECTION SD SYNC** N/C Vin PWM/PSM N/C GND Vout N/C GND A RECOMMENDED PAD PATTERN in inches [millimeters] A 0.1 0.01 [2.54 0.25] D 0.03 0.001 [0.8 0.02] F 0.02 0.001 [0.5 0.02] D F A TAPE AND REEL See Tape and Reel Information - Type B www.vishay.com 24 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com B Document Number: 10114 Revision 25-Mar-03 FX5545G105 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 UNIT VDC A ms V V A A A ms VAC nA W VDC % %/C mVpp mVpp gr. KHz FSYNC/FOSC C C C C/WD* 1.2 - 40 - 55 Tj JA 150 82 400 1.5 + 85 + 125 CONDITION MIN 2.7 PSM mode TSS VH VL IDD IDD IDD TSS 60Hz 60sec VISO = 500VDC VISO = 500VDC 2.4 0.8 750 250 1 5 750 1 x 1011 5 6.5 1.5 to 3.6 at 25C Ambient Temperature DC to 20MHz With 10F capacitor -3 130 90 1.5 +3 0.03 200 5 TYP MAX 6 Rise Time Fall Time Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; Iout = 2A Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; Iout = 2A Document Number: 10114 Revision 25-Mar-03 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 25 FX5545G105 Vishay Vout Vs. Iout For Vin = 3.6V; Vout = 2.5V 2.6 2.55 2.5 2.6 2.55 2.5 Iout = 1A Iout = 2A Iout = 0.5A Vout Vs. Vin Vout (V) Vout (V) 0 0.5 1 1.5 2 2.5 2.45 2.4 2.35 2.3 2.45 2.4 2.35 2.3 0 2 4 6 8 Iout (A) Vin (V) Temp. Vs. Iout Above 25C Ambient Temperature; For Vin = 6V 40 35 30 100 95 90 85 80 75 70 65 60 55 50 0 0.5 1 1.5 2 2.5 0 Efficiency Vs. Iout For Vin = 3.6V; Vout = 2.5V 25 20 15 10 5 0 Efficiency (%) Temp (C) 0.5 1 1.5 2 2.5 Iout (A) Iout (A) Vout Vs. Vin (PSM mode) lout = 0.1A 3.4 3.38 3.36 3.34 3.32 3.3 3.28 3.26 3.24 3.22 3.2 3 4 5 Vin (V) 6 7 3.4 3.38 3.36 3.34 3.32 3.3 3.28 3.26 3.24 3.22 3.2 0 Vout Vs. lout (PSM mode) Vin = 6V Vout (V) Vout (V) 0.05 0.1 Iout (A) 0.15 0.2 0.25 Efficiency Vs. Iout (PSM mode) 100 90 80 70 60 50 40 30 20 10 0 0 0.05 0.1 Iout (A) 0.15 Vin = 4V Vin = 6V Vout (V) 0.2 0.25 www.vishay.com 26 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com Document Number: 10114 Revision 25-Mar-03 |
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