issue 2 - january 2000 ZDS1009 sm-8 complementary current mirror 1 features ? excellent temperature tracking characteristics ? compact cost effective solution ? simplifies circuit implementation ? broad application base from single cell li-ion high side current sense chargers to multi-cell lead-acid systems ? only 4 connections required description the ZDS1009 current mirror has been developed specifically for high side, current sense plus level translation applications and as such will find a broad applications base including battery charge management, dc motor control and over current monitoring functions. it is of particular interest for current sense applications for feedback purposes in fast battery chargers for li-ion cell based systems. the device functions by sensing the voltage developed across an external (user defined) high side current sense resistor, and by an arrangement of current mirrors refer this sensed voltage, with or without multiplication, to a low side referenced signal. this signal can then be used, for example, to close the control loop to a controller ic, for a dc-dc converter providing charge to a battery. typical application circuit vir r r sense 2 4 1 = for balance r3=r4 eg r2=100m? r1=r3=r4=100? v sense sensitivity = 100mv/a sm-8 (8 lead sot223) schematic diagram connection diagram
issue 2 - january 2000 ZDS1009 parameter symbol min max unit conditions breakdown voltage bv y1-x1 120 v i y1 =100 a breakdown voltage bv x1-e1 -30 v i x1 =-10ma breakdown voltage bv y1-e3 30 v i y1 =10ma breakdown voltage bv e1-y1 -12 v i e1 =-100 a breakdown voltage bv e2-y1 -6 v i e2 =-100 a breakdown voltage bv e3-x1 12 v i e3 =100 a breakdown voltage bv e4-x1 6v i e4 =100ua leakage i y1 50 na v y1-x1 =100v leakage i x1 -10 a v x1-e1 =-30v, v y1 =v e1 leakage i y1 10 a v y1-e3 =30v,v x1 =v e3 leakage i e1 -100 na v e1-y1 =-8v leakage i e2 -100 na v e2-y1 =-4v leakage i e3 100 na v e3-x1 =8v leakage i e4 100 na v e4-x1 =4v input voltage v y1-e2 -1.45 -1.65 v i y1 =-1a input voltage v y1-e3 1.45 1.75 v i y1 =1a,v x1 =v y1 input voltage v x1-e1 -1.45 -1.75 v i x1 =-1a,v x1 =v y1 input voltage v x1-e4 1.45 1.65 v i x1 =1a transfer characteristic v out 0.99 1.01 v see fig 1.v cc =5v r1=r3=r4=100? ,v in =1v transfer characteristic v out 1 mv see fig 1.v cc =5v r1=r3=r4=100? ,v in =5mv output zero-offset voltage v offset 4m v see fig 2.v cc =5v,r 2 <1? r1=r3=r4=100? absolute maximum ratings. parameter symbol v alue unit maximum operating voltage v y1-x1 120 v maximum voltage (e1-e2,e3-e4) v e-e? 10 v peak pulse current i m 4a continuous current (e1-e4,e2-e3) i c 1a total power dissipation at t amb = 25c* p tot 2w operating and storage temperature range t j :t stg -55 to +150 c * the power which can be dissipated assuming the device is mounted in a typical manner on a pcb with copper equal to 2 inches square. electrical characteristics (at t amb =25c) 2
issue 2 - january 2000 ZDS1009 figure 1 transfer characteristic test circuit figure 2 output zero-offset voltage test circuit 3 voltage transfer 10m vin - input voltage (v) frequency (hz) phase change v frequency response phase change (degrees) 360 240 220 voltage transfer v frequency response frequency (hz) 100 voltage transfer 0.50 v cc - supply voltage(v) voltage transfer v supply voltage voltage transfer 0.95 +25c r=10 1k r=100 r=1k 0.7 200 180 5101520253035 0 1.00 1.05 1.10 1.15 1.20 100m 1 10 0.8 0.9 1.0 1.1 1.2 1.3 r=10 r=100 r=1k 0.60 0.70 0.80 0.90 1.00 r=10k r=1k 1k 10k 100k 1m 260 280 300 320 340 10k 100k 1m vin = 0.1v voltage transfer v input voltage r=100 r=10k r=1k r = 100 vcc=5v +25c vin = 1v vcc = 5v vac = 0.1v t=25c vin = 1v vcc = 5v vac = 0.1v t = 25c typical characteristics test circuits
issue 2 - january 2000 ZDS1009 4 voltage - (v) 100 0 0.2 0.4 temperature (c) -55 voltage (v) 1m v ce (v) - collector-emitter voltage (v) current transfer 0.95 i in - input current (a) voltage - (v) 100a 0.4 +25c vin 1ma 100a vcutoff 0.1 -60 vcutoff 0.4 0.6 0.8 1ma 10ma 100ma 1a 0.6 0.8 1.0 1.2 1.4 1m 10m 100ma 1a 0.6 0.8 1.0 1.2 1.4 vin vcutoff 1 10 100 0.96 0.97 0.98 0.99 1.00 1.01 1.02 1.03 1.04 1.05 11 0 1.05 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 v ce - collector-emitter voltage(v) current transfer 10ma 100a 1ma 10ma vin -35 -15 5 25 45 65 85 105 125 vcutoff vin -40 -20 0 20 40 60 80 100 120 1.0 1.2 1.4 1.6 i in - input current (a) +25c 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 temperature (c) iin = 1ma iout = 0.95ma iin = 1ma iout = 0.95ma voltage (v) +25c 25 c currenttransfervvce input/cutoffvoltagevi in input/cutoff voltage v i in input/output voltage v temperature input/output voltage v temperature current transfer v vce iout = 0.95iin iout = 0.95iin npn npn npn pnp pnp pnp typical characteristics
issue 2 - january 2000 ZDS1009 5 zetex plc. fields new road, chadderton, oldham, ol9 8np, united kingdom. telephone: (44)161 622 4422 (sales), (44)161 622 4444 (general enquiries) fax: (44)161 622 4420 zetex gmbh zetex inc. zetex (asia) ltd. these are supported by streitfeldstra?e 19 47 mall drive, unit 4 3510 metroplaza, tower 2 agents and distributors in d-81673 mnchen commack ny 11725 hing fong road, major countries world-wide germany usa kwai fong, hong kong ? zetex plc 2000 telefon: (49) 89 45 49 49 0 telephone: (631) 543-7100 telephone:(852) 26100 611 fax: (49) 89 45 49 49 49 fax: (631) 864-7630 fax: (852) 24250 494 internet :http://www.zetex.com this publication is issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. the company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. he e e1 lp 45 o c 1 2 3 4 8 7 6 5 e2 a a1 dim millimetres inches min typ max min typ max a - - 1.7 - - 0.067 a1 0.02 - 0.1 0.0008 - 0.004 b - 0.7 - - 0.028 - c 0.24 - 0.32 0.009 - 0.013 d 6.3 - 6.7 0.248 - 0.264 e 3.3 - 3.7 0.130 - 0.145 e1 - 4.59 - - 0.180 - e2 - 1.53 - - 0.060 - he 6.7 - 7.3 0.264 - 0.287 lp 0.9 - - 0.035 - - - - 15 - - 15 - 10 - - 10 - package dimensions ordering information device partmarking ZDS1009 s1009
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