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FX5545G005
Vishay
Industry Smallest and Low Profile 5W 1.5A DC/DC Buck Converter with High Output Power Density
FEATURES
* Fully integrated DC/DC converter * High efficiency over large load range * 100% duty cycle * Power density - more than 100W/inch3 * 1A shutdown current * 2.7V to 6V input range (1 Li+ and 3-cell NiCd or NiMH cells) * 1.35V to 4.5V* output voltage * Programmable PWM/PSM controls * Low output ripple * BGA/LGA construction * Temperature range: - 40C to + 85C * Output power 5W * Maximum current 1.5A * No external components needed * 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 continous 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 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/LGA 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
* Point of Load (POL) applications such as drivers for FPGA's, microprocessors, DSP's amplifiers, etc. * 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. For lead (Pb)-free solder please add E2 suffix. Document Number: 10112 Revision: 21-Jan-05 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com 11 5545 G005
FX5545G005
Vishay
DIMENSIONS in inches [millimeters]
B C A
L W A B C T Ball Diameter
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] 0.03 0.001 [0.762 0.025]
T L
BOTTOM SIDE
PIN CONFIGURATION*
PIN CONNECTION SD SYNC** N/C Vin PWM/PSM N/C GND Vout N/C GND 1, 2 3, 7
Marked on Upper Side
20 19 18 17 16 15 14 13 12 11 10 9 8 4 7 3 6 2 5 1
4, 8 5, 9 6, 10 11, 12
*Note: Pin Description application note is available at www.vishay.com/doc?10119 **Note: if not used must be connected to Vin.
13, 17 14, 18 15, 19 16, 20
RECOMMENDED PAD PATTERN in inches [millimeters]
A D F
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]
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
Document Number: 10112 Revision: 21-Jan-05
A
0.58 0.01 [14.7 0.25]
w
FX5545G005
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 CONDITION MIN 2.7 PSM mode TSS VH VL IDD IDD IDD TSS 60Hz 60sec VISO = 500 VDC VISO = 500 VDC 2.4 0.8 750 250 1 5 750 1 x 1011 5 5 1.35 to 4.5 at 25 C Ambient Temperature DC to 20 MHz -3 100 1.4 670 FSYNC/FOSC C C C C/WD* Tj JA 1.2 - 40 - 55 150 82 1.5 + 85 + 125 +3 0.03 200 4.3 TYP MAX 6
A
ms V V
A A A
ms VAC nA W VDC % %/C mVpp gr. KHz
Rise Time
Fall Time
Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1.5A
Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1.5A
Document Number: 10112 Revision: 21-Jan-05
For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com 13
FX5545G005
Vishay
PWM MODE Vout Vs. lout*
Vin = 3.6V
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 4 5
Vout Vs. Vin*
Vout (V)
Vout (V)
Iout = 0.5A Iout = 1.5A
0
0.5
1
1.5
2
6
lout (A)
Vin (V)
Temp. Vs. lout*
Above 25C Ambient Temperature: For Vout = 3.3V; Vin = 6V
30 25 100 90 80 70 60 50 40 30 20 10 0
Efficiency Vs. lout*
Vout = 3.3V; Vin = 3.6V
D Temp (C)
20 15 10 5 0 0 0.5 1 1.5 2
Efficiency (%)
0
0.5
1
1.5
2
lout (A)
lout (A)
PSM MODE Vout Vs. Vin*
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 0.05 0.1 0.15 Iout(A) 0.2 0.25
Vout Vs. lout*
Vin = 6V
Vout (V)
Efficiency Vs. lout*
100 90 80 70 60 50 40 30 20 10 0 0 0.05 0.1 0.15 Iout (A) Vin = 4V Vin = 6V Efficiency (%)
Vout (V)
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 14 For technical questions, contact FunctionPAK@vishay.com For marketing questions, contact FunctionPAK.marketing@vishay.com Document Number: 10112 Revision: 21-Jan-05

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