SP7656EN2-L/TR Exar Corporation, SP7656EN2-L/TR Datasheet
SP7656EN2-L/TR
Specifications of 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 11/07/08 SP7656 PowerBlox SP7656 PowerBlox Copyright 2008 EXAR Corporation 1 ...
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... 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 2008 EXAR Corporation ...
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... Register 200ms delay S 4-Bit counter R POR R Set Dominant 3 CONVERTER BLOCK DIAGRAM SVIN Vin - 5V LDO 5V Internal LDO PWM Latch Reset Dominant FET GATE S Internal R P-FET R VDR ENBL - + 30uA Overcurrent VIN - 0.3V Comparator Copyright 2008 EXAR Corporation VDR PVIN LX Power PAD ISET GND ...
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... CZ2 130pF internal for loop Error Amplif ier Figure 1- RZ and CZ in conjunction with internal compensation components form a Type-3 compensation 4 1 OUT DBPOLE 50K 40K 30K 10K 2K Vout 2pF RZ CZ RZ2 200k R1 200k Vref =0.6V R2 Copyright 2008 EXAR Corporation ...
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... Input voltage ripple has three components: ESR and ESL cause a step voltage drop upon turn on of the MOSFET. During the on time 5 200 k Vout 1 capacitor for Voltage, input capacitor current, ), RIP Iout (not to exceed IN Copyright 2008 EXAR Corporation ...
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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 2008 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 7 Diode Cout Lout Board) Manual characterization. Copyright 2008 EXAR Corporation ...
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... Figure 2- Typical application circuit 100 3.0 4.0 0.0 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 2008 EXAR Corporation ...
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... SP7656 PowerBlox PACKAGE: 8-pin HSOICN Copyright 2008 EXAR Corporation 9 ...
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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 ...