2012/01/05 v.1 page 1 SP435W dual op amp with voltage regulator description applications the SP435W is a monolithic ic specifically designed to control the output current and voltage levels of sw itch mode battery chargers and power supplies. the device contains two operational amplifiers and a precision shunt regulator. op amp 1 is designed for voltage control, whose non-inverting input internal ly connects to the output of the shunt regulator. op a mp 2 is for current control with both inputs uncommitted. the ic offers the power converter designer a control solution that features increased precision with a corresponding reduction in system complexity and co st. battery power equipment linear regulators switch power supply cellular phone digital cameras computer disk drivers instrumentation features pin configuration ( sop-8 ) part marking input offset voltage: 0.5mv supply current: 250 ua per op amp at 5.0v supply voltage unity gain bandwidth: 1mhz output voltage swing: 0 to (vcc- 1.5) v power supply range: 3 to 18v fixed output voltage reference: 2.5v voltage tolerance: 1% sink current capability from 0.2 to 80ma ?
2012/01/05 v.1 page 2 SP435W dual op amp with voltage regulator typical applcation circuit pin description pin symbol description 1 output 1 op amp output 1 2 input 1- op amp input 1 voltage 3 input 1+ v ka power switching output 4 gnd ground 5 input 2+ op amp input 2 voltage 6 input 2- op amp input 2 voltage 7 output 2 op amp output 2 8 vcc power supply voltage ordering information part number package part marking SP435Ws8rgb sop-8 SP435W SP435Ws8rgb : 13 tape reel; pb C free, halogen-fre e
2012/01/05 v.1 page 3 SP435W dual op amp with voltage regulator block diagram absoulte maximum ratings (ta=25 , unless otherwise specified.) the following ratings designate persistent limits b eyond which damage to the device may occur . symbol parameter value unit v cc dc supply voltage (vcc to ground) 20 v v in op amp 1 and 2 input voltage (pin 2, 5, 6) -0.3~vcc +0.3 v v id op amp 2 input differential voltage (pin 5, 6) 20 v i k voltage reference cathode current (pin 3) 100 ma t stg storage temperature range -65 to 150 t lead lead soldering temperature for 5 sec. 260 t ope operation temperature range -40 ~ 85 p d power dissipation 500 mw
2012/01/05 v.1 page 4 SP435W dual op amp with voltage regulator electrical characteristics (unless otherwise stated, these specifications appl y t a =25c; v cc =+5v) symbol parameter conditions min. typ. max. unit supply v cc supply voltage 3 18 v v cc = 5v, no load 0.45 0.6 i cc supply current, excluding current in voltage reference v cc = 18v, no load 0.6 0.8 ma voltage reference section v ref reference voltage i ka =10 ma 2.475 2.5 2.525 v v ref reference voltage deviation over temp range i ka =10 ma, t a = -40~85 5 24 mv i min minimum cathode current for regulation v ka = v ref 0.2 1.0 ma O z k a O dynamic impedance v ka = v ref, i ka = 1ma~80ma, f<1khz 0.3 0.5 op amp 1 section (v cc+ = 5v, v o = 1.4v) t a = 25c 0.5 3.0 v io input offset voltage t a = -40c~85c 5.0 mv v io input offset voltage temperature drift 7 v/c i ib input bias current (inverting input only) 20 150 na a vd large signal voltage gain v cc = 15v, r l = 2k , v o = 1.4~11.4v 85 100 v/mv k svr power supply rejection ratio v cc+ = 5~18v 60 90 db io (sink) output sink current v cc = 15v, v id = -1v, v o = 2v 10 20 ma io (source) output source current v cc = 15v, v id = 1v, v o = 2v 20 40 ma v oh output voltage swing high v cc = 18v, v id = 1v, r l = 10k 16 16.5 v v ol output voltage swing low v cc = 18v, v id = -1v, r l = 10k 17 100 mv sr slew rate v cc = 18v, r l = 2k , v i = 0.5~2v, c l = 100 pf 0.2 0.5 v / s gbw gain bandwidth product v cc = 18v, r l = 2k , v i = 10mv, c l = 100 pf, f = 100khz 0.5 1 mhz
2012/01/05 v.1 page 5 SP435W dual op amp with voltage regulator symbol parameter conditions min. typ. max. unit op amp 2 section (v cc+ = 5v, v o = 1.4v) t a = 25c 0.5 3.0 v io input offset voltage t a = -40c~85c 5.0 mv v io input offset voltage temperature drift 7 v/c i io input offset current 2 30 na i ib input bias current (inverting input only) 20 150 na v icr input common mode voltage range vcc = 18v vcc C 1 .5 v cmrr common mode rejection ratio t a = 25c, v cm = 0~3.5v 70 85 db a vd large signal voltage gain v cc = 15v, r l = 2k , v o = 1.4~11.4v 85 100 v/mv k svr power supply rejection ratio v cc+ = 5~18v 60 90 db io (sink) output sink current v cc = 15v, v id = -1v, v o = 2v 10 20 ma io (source) output source current v cc = 15v, v id = 1v, v o = 2v 20 40 ma v oh output voltage swing high v cc = 18v, v id = 1v, r l = 10k 16 16.5 v v ol output voltage swing low v cc = 18v, v id = -1v, r l = 10k 17 100 mv sr slew rate v cc = 18v, r l = 2k , v i = 0.5~2v, c l = 100 pf 0.2 0.5 v / s gbw gain bandwidth product v cc = 18v, r l = 2k , v i = 10mv, c l = 100 pf, f = 100khz 0.5 1 mhz
2012/01/05 v.1 page 6 SP435W dual op amp with voltage regulator sop- 8 package outline
2012/01/05 v.1 page 7 SP435W dual op amp with voltage regulator information provided is alleged to be exact and con sistent. sync power corporation presumes no respon sibility for the penalties of use of such information or for any vio lation of patents or other rights of third parties, which may result from its use. no license is granted by allegation or otherwise un der any patent or patent rights of sync power corpo ration. conditions mentioned in this publication are subject to change without notice. this publication surpasses and re places all information previously supplied. sync power corporation produc ts are not authorized for use as critical component s in life support devices or systems without express written approval of sync power corporation. ?the sync power logo is a registered trademark of sy nc power corporation ?2011 sync power corporation C printed in taiwan C a ll rights reserved sync power corporation 7f-2, no.3-1, park street nankang district (nksp), taipei, taiwan, 115, r.o.c phone: 886-2-2655-8178 fax: 886-2-2655-8468 http://www.syncpower.com
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