sp7656en2-l-tr Exar Corporation, sp7656en2-l-tr Datasheet
sp7656en2-l-tr
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sp7656en2-l-tr Summary of contents
Page 1
... VIN-LX). The SP7656 is packaged in a thermally enhanced 8-pin SO8 package making it one of the smallest converters available capable of operating from 5, 9, 12, 18 and 24VDC supplies. TYPICAL APPLICATION CIRCUIT 2/19/08 SP7656 PowerBlox SP7656 PowerBlox Copyright 2007 EXAR Corporation 1 ...
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... T <85C j 0C< T <85C j 0C< T <85C j VFB=1.2V *See Duty Cycle restriction- applications section Measure SVIN – VDR, SVIN>7V Measure SVIN - ISET V = SVIN ISET VFB=0.58V, measure between VIN=4.5V and first GATE pulse Apply voltage to FB Copyright 2007 EXAR Corporation ...
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... VIN VIN PWM Latch Reset Dominant + + - - PWM Comparator Error Amplifier FAULT UVLO FAULT Register 200ms delay S 4-Bit counter R POR R Set Dominant 3 VIN VDR Vin - 5V LDO 5V Internal LDO GATE S R VDR ENBL Overcurrent 30uA Comparator VIN - 0.3V GND Copyright 2007 EXAR Corporation ...
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... Table1- RZ Selection and is SP7656 CP1 internal CZ2 130pF for loop Error Amplif ier Figure 1- RZ and CZ in conjunction with internal compensation components form a Type-3 compensation Copyright 2007 EXAR Corporation 4 1 OUT DBPOLE 50K ...
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... The RMS value of assuming a low inductor ripple current (I can be calculated from: Icin In general total input voltage ripple should be maintained below 1. 180mV). Copyright 2007 EXAR Corporation 5 200 k Vout 1 ...
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... Schottky are negligible and can be ignored. 6 during each cycle. The 2 1 2 ESR 8 Cout fs , and thermal f For a low duty cycle Vout Iout 1 Vin OUT Copyright 2007 EXAR Corporation ...
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... RIP Cin 7656 For more detail on the SP7656 layout see the SP7656EVB (Evaluation available on our web site. Each layer is shown in detail as well as a complete bill of materials and performance Copyright 2007 EXAR Corporation 7 Diode Cout Lout Board) Manual characterization. ...
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... Figure 4- Efficiency Natural convection at Vout=12V, Ta= 25°C, Vin Vout Iout 2A/div 8 Application Information E ffic (12Vo in= 14V V in= 24V V in= 29V 1.0 2.0 3.0 4 (A) Figure 6- Start-up Vout=3.3V, Ta= 25°C Copyright 2007 EXAR Corporation ...
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... SP7656EN2-L………………………….- 40°C to 125°C…………………(Lead Free) 8-pin HSOICN SP7656EN2-L/TR……………………..- 40°C to 125°C………………….(Lead Free) 8-pin HSOICN ...
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... SP7656 PowerBlox PACKAGE: 8-pin HSOICN Copyright 2007 EXAR Corporation 10 ...