rev. 1.7 june 2000 1/9 this is preliminary information on a new product. details are subject to change without notice. stv8130a/STV8130B 3.3v and adjustable voltage regulators with disable and reset features n output currents up to 750ma for stv8130a and up to 200ma for STV8130B n fixed precision output 1 voltage 3.3v 2% n output 2 voltage programmable from 2.8v to 16v n output 1 with reset facility n output 2 with disable by ttl input n short circuit protection at both outputs n thermal protection n lowdrop output voltage description the stv8130a and STV8130B are monolithic dual positive voltage regulators, designed to pro- vide precision output voltages of 3.3v and adjust- able, at currents up to 750ma for stv8130a and 200ma for STV8130B. the ability to deliver cur- rents is the same for the two ics, but the higher thermal resistor of pdip8 does not allow to over- pass 200ma for the STV8130B. an internal reset circuit generates a reset pulse if output 1 drops below the regulated voltage value. output 2 can be disabled by ttl input. short cir- cuit and thermal protections are included. pin connections sip9 order code: stv8130a (plastic package) pdip8 order code: STV8130B (plastic package) 9 8 7 6 5 4 3 2 1 output 1 output 2 program reset ground disable delay capacitor input 2 input 1 1 2 3 45 8 7 6 delay capacitor ground input output 1 output 2 program reset disable stv8130 b stv8130 a 1
stv8130a/STV8130B 2/9 block diagrams stv8130a 5 STV8130B 8 2 7 4 6 3
stv8130a/STV8130B 3/9 absolute maximum ratings thermal data symbol parameter value unit v in dc input voltage pin 1, 2 (stv8130a) or pin 1 (STV8130B) 20 v v dis disable input voltage pin 4 (stv8130a) or pin 3 (STV8130B) 20 v v rst output voltage at pin 6 (stv8130a) or pin 5 (STV8130B) 20 v i o1, 2 output currents internally limited p t power dissipation internally limited t stg storage temperature -65 to +150 c t j junction temperature 0 to +150 c symbol parameter value unit r th(l-c) thermal resistance junction case of stv8130a 8 c/w thermal resistance junction case of STV8130B 45 t j maximum recommended junction temperature 130 c t oper operating free air temperature range 0 to 70 c
stv8130a/STV8130B 4/9 electrical characteristics (v in = 7v; t j = 25c unless otherwise specified) note 1: the output short circuit currents are tested one channel at a time. during a short circuit there is heavy consumption of power, but the thermal protection circuit pre- vents an excessively high temperature level being reached. safe permanent short circuits can only be guaranteed for input voltages up to16v. symbol parameter value min. typ. max. unit v o1 output voltage i o1 = 10ma 3.23 3.30 3.37 v v o2 output voltage i o2 = 10ma 2.8 16 v v o1, 2 dropout voltage i o1, 2 = 750ma (stv8130a) 1.4 v i o1, 2 = 200ma (STV8130B) v o1 line regulation 1 6v < v in1 < 12v, 12v < v in2 < 18v for stv 8130a and 7v < v in < 12v for STV8130B (@ v o2 : 10v, i o1, 2 = 200ma) 50 mv v o2 line regulation 2 100 mv v o1 load regulation 1 5ma < i o1, 2 < 0.6a, @ v o2 = 10v 100 mv v o2 load regulation 2 200 mv i q quiescent current i o1 = 10ma, output 2 disabled 2 ma v q1rst reset threshold voltage (k = v o1 ) k-0.4 k-.25 k-0.1 v v rth reset threshold hysteresis (see circuit description) 20 50 75 v t rd reset pulse delay at pin 6 (stv8130a) or pin 5 (STV8130B) c 0 = 100nf (see circuit description) 25 ms v rl saturation volt. at pin 6 in reset condition for stv8130a i 6 = 5ma 0.4 v saturation volt. at pin 5 in reset condition for STV8130B i 5 = 5ma i rh leakage current at pin 6 in normal condition for stv8130a v 6 = 10v 10 m a leakage current at pin 5 in normal condition for stv8130a v 5 = 10v k o1, 2 output volt thermal drift t j = 0 to + 125c 100 ppm/c i o1, 2 sc short circuit output current v in = 7v 1.6 a v in = 16v (see 1 )1a v dish disable volt. at pin 4 high (out 2 active) for stv8130a 2v disable volt. at pin 3 high (out 2 active) for STV8130B v disl disable volt. at pin 4 low (out 2 disabled) for stv8130a 0.8 v disable volt. at pin 3 low (out 2 disabled) for STV8130B i dis disable bias current at pin 4 (stv8130a) or pin 3 (STV8130B) 0v < v dis < 7v -100 2 m a v ref pin 7 (stv8130a) 2.44 v pin 6 (STV8130B) t jsd junction temp. for thermal shut down 145 c k o d v o 10 6 d tv o --------------------------- =
stv8130a/STV8130B 5/9 figure 1. note: pin numbers are related to stv8130a. numbers between brackets correspond to the pin numbers of STV8130B. figure 2. 10f b reset 6 (5) 0.6v 2.44v c e ref 2.44v out1 (8) 9 reg a 50 3 (2) reset 3.3 v 3.15 v 3.10 v t d t d vinput vout1
stv8130a/STV8130B 6/9 circuit description the stv8130a and STV8130B are dual voltage regulators with reset and disable. the two regulation parts are supplied from one voltage reference circuit trimmed by zener zap during ews testing. since the supply voltage of this last is connected at pin 1 (v in1 ) in stv8130a, regulator 2 will not work if pin 1 is not supplied. in STV8130B, the two regulators are supplied by pin 1. the output stages have been designed in a dar- lington configuration with a typical drop of 1.2v. the adjustable voltage of output 2 is defined by output bridge resistors (r1, r2): the values of these resistors are calculated to obtain, with the targetted value for v02, the vref voltage (2.44v) on the median point connected to program (pin 7 for stv8130a or pin 6 for STV8130B). the disable circuit switches off output 2 if a volt- age of less than 0.8v is applied at pin 4 (stv8130a) or pin 3 (STV8130B). the reset circuit checks the voltage at output 1. if this drops below v out - 0.20v (3.10v typ.), then the first comparator a (see figure 1 ) rapidly dis- charges the capacitor ce and the reset output im- mediately drops to low. this drop can be caused by a parasitic loading condition on out 1 or by a too low value of v in (short powering off). once the voltage at out 1 rises above v out -0.15v (3.15v typ.), voltage v ce increases linearly to 2.44v cor- responding to delay t d following the law below (see figure 2 ), then the reset output becomes high again. to avoid problems with the reset output, the sec- ond comparator b has a large hysteresis (1.9v). typical application t d c e 2.44v () 10 m a ---------------------------------- = v 02 v ref r 1 r 2 + r 1 -------------------- = with v ref = 2.44v stv8130a 0.1f ce reset v in1 v in2 v 01 v 02 r2 r1 c1 to c4 = 10f c1 c2 c3 c4 disable 1 2 54 8 9 3
stv8130a/STV8130B 7/9 v 02 v ref r 1 r 2 + r 1 -------------------- = with v ref = 2.44v STV8130B 5 2 4 3 6 c3 c2 r2 r1 v 01 v 02 8 7 disable ce 0.1f reset c1 v in c1 to c3 = 10f
stv8130a/STV8130B 8/9 package mechanical data figure 3. 9-pin plastic single in line package (stv8130a) figure 4. 8-pin plastic dual in line package (STV8130B) dim. mm inches min typ max min typ max a 7.1 0.280 a1 2.7 3 0.106 0.118 b 24.8 0.976 b1 0.5 0.020 b3 0.85 1.6 0.033 0.063 c 3.3 0.130 c1 0.43 0.017 c2 1.32 0.052 d 21.2 0.835 d1 14.5 0.571 e 2.54 0.100 e3 20.32 0.800 l 3.1 1.122 l1 3 0.116 l2 17.6 0.693 l3 0.25 0.010 m 3.2 0.126 n 1 0.039 number of pins 9 b e3 a1 l1 d d1 b1 c b3 n l l2 e c2 c1 19 m l3 a dim. mm inches min typ max min typ max a 3.32 0.131 a1 0.51 0.020 b 1.15 1.65 0.045 0.065 b 0.356 0.55 0.014 0.022 b1 0.204 0.304 0.008 0.012 d 10.92 0.430 e 7.95 9.75 0.313 0.384 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 f 6.6 0.260 i 5.08 0.200 l 3.18 3.81 0.125 0.150 z 1.52 0.060 number of pins 8
stv8130a/STV8130B 9/9 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without the express written approval of stmicroele ctronics. the st logo is a registered trademark of stmicroelectronics ? 2000 stmicroelectronics - all rights reserved. purchase of i 2 c components by stmicroelectronics conveys a license under the philips i 2 c patent. rights to use these components in an i 2 c system is granted provided that the system conforms to the i 2 c standard specification as defined by philips. stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia - malta - morocco - sin gapore - spain sweden - switzerland - united kingdom - u.s.a. http://www.st.com
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