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| FX5545G201 Vishay Industry Smallest and Low Profile 3W 1000mA DC/DC Buck Converter with High Output Density Power FEATURES * Fully integrated DC/DC converter * High efficiency over large load range * 2MHz switching frequency * 100% duty cycle * Power density - more than 100W/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 3W * Maximum current 1.0A * Low profile The DC/DC converter provides fully integrated synchronous buck converter solution for the latest one-cell lithium ion cellular phones. Its input voltage is between 2.7V to 6V, capable of delivering up to 1000mA of output current at 1.5V to 3.6V. The DC/DC converter combines the 2MHz-switching controller with fully integrated passive components needed to deliver the smallest and most efficient converter available today. The high switching frequency minimizes the output capacitance with peak to peak output ripple as low as 25mV. The DC/DC converter delivers efficiency up to 95%. The programmable pulse-skipping mode (PSM) maintains this high efficiency even during the standby and idle modes to increase overall battery life and talktime. In order to extract the last ounce of power from the battery, the DC/DC converter is designed with 100% duty cycle control for this mode. This function enables the DC/DC converter to operate like a saturated linear regulator delivering the highest potential output voltage for longer talk time. 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 G201 Document Number: 10104 Revision 13-Mar-03 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 11 FX5545G201 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. 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 12 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com B Document Number: 10104 Revision 13-Mar-03 FX5545G201 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 gr. MHz FSYNC/FOSC C C C C/WD* 1.2 - 40 - 55 Tj JA 150 82 2 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 9 750 1 x 1011 5 3 1.5 to 3.6 at 25C Ambient Temperature DC to 20MHz -3 35 1.5 3 0.03 200 5 TYP MAX 6 Rise Time Fall Time Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; Iout = 1A Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; Iout = 1A Document Number: 10104 Revision 13-Mar-03 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 13 FX5545G201 Vishay Vout Vs. Iout Vin = 3.6V 3.5 3.45 3.4 3.5 3.45 3.4 Vout Vs. Vin Iout = 600mA Vout (V) Vout (V) 3.35 3.3 3.25 3.2 3.15 3.1 0 0.2 0.4 0.6 0.8 1 1.2 3.35 3.3 3.25 3.2 3.15 3.1 3 3.5 4 4.5 5 5.5 6 6.5 Iout (A) Vin (V) Temp. Vs. Iout Above 25C Ambient Temperature 14 12 10 100 95 90 85 80 75 70 65 60 55 50 0 Efficiency Vs. Iout Vin = 3.6V; Vout = 3.3V Temp (C) 8 6 4 2 0 0 0.2 0.4 Vin = 3.6V 0.6 0.8 1 1.2 Efficiency (%) 0.2 0.4 0.6 0.8 1 1.2 Iout (A) Iout (A) Vout Vs. Vin (PSM mode) lout = 0.05A 3.5 3.45 Vout (V) 3.4 3.35 3.3 3.25 3.2 3 4 5 Vin (V) 6 7 Vout (V) 3.5 3.45 3.4 3.35 3.3 3.25 3.2 Vout Vs. lout (PSM mode) Vin = 6V 0 0.05 0.1 0.15 Iout (A) 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 0.2 0.25 Vin = 4V Vin = 6V www.vishay.com 14 Efficiency (%) For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com Document Number: 10104 Revision 13-Mar-03 |
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