FX5545G205 Vishay Industry Smallest and Low Profile 8W 2.5A 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 300W/inch3 • 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 8W • Maximum current 2.5A • 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 requirements, the DC/DC converter is designed to handle the industrial temperature range of - 40°C to + 85°C. 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 5545 G205 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. www.vishay.com 26 For technical questions, contact [email protected] For marketing questions, contact [email protected] Document Number: 10113 Revision 27-Nov-02 FX5545G205 Vishay 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] A W W L 0.58 ± 0.01 [14.7 ± 0.25] C A T L B DIMENSIONS in inches [millimeters] PIN CONFIGURATION* 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Marked on Upper Side *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] 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 BOTTOM SIDE D A D F 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 A TAPE AND REEL See Tape and Reel Information - Type B Document Number: 10113 Revision 27-Nov-02 For technical questions, contact [email protected] For marketing questions, contact [email protected] www.vishay.com 27 FX5545G205 Vishay STANDARD ELECTRICAL SPECIFICATIONS PARAMETER UNIT Input Voltage Range VDC Insulation Test Voltage Resistance Leakage Current VAC Ω nA Output Power Voltage Voltage Tolerance Temp. Coefficient Ripple and Noise CONDITION gr. Temperature Operation Storage °C °C TYP MAX 2.7 60Hz 60sec VISO = 500VDC VISO = 500VDC W VDC % %/°C mVpp mVpp General Package Weight MIN 6 750 1 x 1011 5 8 1.8 to 3.3 at 25°C Ambient Temperature -5 +5 0.03 DC to 20MHz With 10µF output capacitor 130 90 1.5 - 40 - 55 Vout Vs. Iout + 85 + 125 Vout Vs. Vin For Vin = 3.6V; Vout = 2.5V 2.6 2.6 2.55 2.55 2.5 2.5 Vout (V) Vout (V) Iout = 0.5A 2.45 Iout = 2.5A 2.45 2.4 2.4 2.35 2.35 2.3 Iout = 1.5A 2.3 0 0.5 1 1.5 2 2.5 3 0 1 2 3 4 5 6 7 Vin (V) Iout (A) ∆ Temp. Vs. Iout Efficiency Vs. Iout Above 25°C Ambient Temperature; For Vin = 6V For Vin = 3.6V; Vout = 2.5V 60 100 95 50 Efficiency (%) 90 ∆ Temp (°C) 40 30 20 85 80 75 70 65 60 10 55 0 5 0 0.5 1 1.5 2 Iout (A) www.vishay.com 28 2.5 3 0 0.5 1 1.5 2 2.5 3 Iout (A) For technical questions, contact [email protected] For marketing questions, contact [email protected] Document Number: 10113 Revision 27-Nov-02