tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 1 post office box 655303 ? dallas, texas 75265 3-pin sot-23 package supply current of 9 m a (typical) precision supply voltage monitor 2.5 v, 3 v, 3.3 v, 5 v power-on reset generator with fixed delay time of 200 ms pin-for-pin compatible with max 809 temperature range ...40 c to 85 c description the tps3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for dsps and processor-based systems. during power-on, reset is asserted when the supply voltage v dd becomes higher than 1.1 v. thereafter, the supervisory circuit monitors v dd and keeps reset active as long as v dd remains below the threshold voltage v it . an internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. the delay time, t d(typ) = 200 ms, starts after v dd has risen above the threshold voltage v it . when the supply voltage drops below the threshold voltage v it , the output becomes active (low) again. no external components are required. all the devices of this family have a fixed sense-threshold voltage v it set by an internal voltage divider. the product spectrum is designed for supply voltages of 2.5 v, 3 v, 3.3 v, and 5 v. the circuits are available in a 3-pin sot-23. the tps3809 devices are characterized for operation over a temperature range of 40 c to 85 c. typical applications 3.3 v tps3809k33 tms320lc54x gnd gnd reset reset v dd v dd applications using dsps, microcontrollers, or microprocessors wireless communication systems portable/battery-powered equipment programmable controls intelligent instruments industrial equipment notebook/desktop computers automotive systems tps76333 gnd out in 5 v copyright ? 1999, texas instruments incorporated production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 3 tps3809 . . . dbv package (top view) 1 reset v dd gnd
tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 2 post office box 655303 ? dallas, texas 75265 available options t a device name threshold voltage marking tps3809j25dbvr 2 tps3809j25dbvt 3 2.25 v pczi 40 cto85 5 c tps3809l30dbvr 2 tps3809l30dbvt 3 2.64 v pdai 40 c to 85 c TPS3809K33DBVR 2 tps3809k33dbvt 3 2.93 v pdbi tps3809i50dbvr 2 tps3809i50dbvt 3 4.55 v pdci 2 the dbvr passive indicates tape and reel of 3000 parts. 3 the dbvt passive indicates tape and reel of 250 parts. 25 family j 9 tps380 r dbv reel package nominal supply voltage nominal threshold voltage functionality function/truth table, tps3809 ordering information l reset h 0 v dd >v it 1 functional block diagram r2 _ + r1 v dd gnd reset tps3809 oscillator reference voltage of 1.137 v reset logic + timer
tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 3 post office box 655303 ? dallas, texas 75265 timing diagram t d t v dd ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? v (nom) v it 1.1 v 1 0 t for v dd < 1.1 v undefined behavior of reset output reset t d absolute maximum ratings over operating free-air temperature (unless otherwise noted) 2 supply voltage, v dd (see note1) 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . all other pins (see note 1) 0.3 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . maximum low output current, i ol 5 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . maximum high output current, i oh 5 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input clamp current, i ik (v i <0 or v i >v dd ) 20 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output clamp current, i ok (v o <0 or v o >v dd ) 20 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous total power dissipation see dissipation rating table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating free-air temperature range, t a 40 c to 85 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . soldering temperature 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 stresses beyond those listed under aabsolute maximum ratingso may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated under arecommended operating conditi onso is not implied. exposure to absolutemaximumrated conditions for extended periods may affect device reliability. note 1: all voltage values are with respect to gnd. for reliable operation the device should not be operated at 7 v for more tha n t=1000h continuously. dissipation rating table package t a <25 c power rating derating factor above t a = 25 c t a = 70 c power rating t a = 85 c power rating dbv 437 mw 3.5 mw/ c 280 mw 227 mw recommended operating conditions at specified temperature range min max unit supply voltage, v dd 2 6 v operating free-air temperature range, t a 40 85 c
tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 4 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions min typ max unit v dd = 2.5 v to 6 v, i oh = 500 m a v dd 0.2 v oh high-level output voltage v dd = 3.3 v, i oh = 2 ma v dd 0.4 v v dd = 6 v, i oh = 4 ma v dd 0.4 v dd = 2 v to 6 v, i ol = 500 m a 0.2 v ol low-level output voltage v dd = 3.3 v, i ol = 2 ma 0.4 v v dd = 6 v, i ol = 4 ma 0.4 power-up reset voltage (see note 2) v dd 1.1 v, i ol = 50 m a 0.2 v tps3809j25 2.20 2.25 2.30 v it negative-going input threshold tps3809l30 t a 40 cto85 5 c 2.58 2.64 2.70 v v it ggg voltage (see note 3) tps3809k33 t a 40 c to 85 c 2.87 2.93 2.99 v tps3809i50 4.45 4.55 4.65 tps3809j25 30 v h hysteresis tps3809l30 35 mv v hys h y steresis tps3809k33 40 mv tps3809i50 60 i dd su pp ly current v dd = 2 v, output unconnected 9 12 m a i dd s u ppl y c u rrent v dd = 6 v, output unconnected 20 25 m a c i input capacitance v i = 0 v to v dd 5 pf notes: 2. the lowest supply voltage at which reset becomes active. t r, vdd 15 m s/v. 3. to ensure best stability of the threshold voltage, a bypass capacitor ( 0.1 m f ceramic) should be placed near the supply terminals. timing requirements at r l = 1 m w , c l = 50 pf, t a = 25 c parameter test conditions min typ max unit t w pulse width at v dd v dd = v it + 0.2 v, v dd = v it 0.2 v 3 m s switching characteristics at r l = 1 m w , c l = 50 pf, t a = 25 c parameter test conditions min typ max unit t d delay time v dd v it + 0.2 v, see timing diagram 120 200 280 ms t phl propagation (delay) time, high-to-low-level output v dd to reset delay v il = v it 0.2 v, v ih = v it +0.2 v 1 m s
tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 5 post office box 655303 ? dallas, texas 75265 typical characteristics figure 1 low-level output voltage vs low-level output current 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 0 2.5 5.0 7.5 10.0 12.5 v dd = 2.5 v t a = 85 c t a =40 c i ol low-level output current ma ol v low-level output voltage v t a = 25 c t a = 0 c figure 2 supply current vs supply voltage 50 40 30 20 10 0 10 20 30 40 50 20246 t a = 25 c v dd supply voltage v dd i supply current a m tps3809j25 figure 3 high-level output voltage vs high-level output current 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 i oh high-level output current ma v dd = 6 v t a = 85 c 0 10 20 30 40 50 v oh high-level output voltage v t a =40 c t a = 0 c t a = 25 c figure 4 high-level output voltage vs high-level output current 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 i oh high-level output current ma v dd = 2.5 v t a = 85 c 0 2 4 6 8 10 v oh high-level output voltage v t a =40 c t a = 25 c t a = 0 c
tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 6 post office box 655303 ? dallas, texas 75265 typical characteristics figure 5 0.995 0.996 0.997 0.998 0.999 1.000 1.001 normalized input threshold voltage vs free-air temperature at v dd t a free-air temperature c 40 20 0 20 40 60 85 v dd = 2.3 v normalized threshold voltage it v a (t ), it v (25 c) figure 6 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.2 0.4 0.6 0.8 1.0 minimum pulse duration at v dd vs v dd threshold overdrive voltage v dd threshold overdrive voltage v m s minimum pulse duration at v dd t w
tps3809j25, tps3809l30, tps3809k33, tps3809i50 3-pin supply voltage supervisors slvs228 august 1999 7 post office box 655303 ? dallas, texas 75265 mechanical data dbv (r-pdso-g3) plastic small-outline 0,25 0,55 0,35 gage plane 0,15 nom 4073253-2/e 05/99 2,60 3,00 1,50 1,70 3 2 2,80 3,00 1 0,50 0,30 1,45 0,95 0,05 min seating plane 0,10 m 0,20 0,95 0 8 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion.
important notice texas instruments and its subsidiaries (ti) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. all products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. ti warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with ti's standard warranty. testing and other quality control techniques are utilized to the extent ti deems necessary to support this warranty. specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage (acritical applicationso). ti semiconductor products are not designed, authorized, or warranted to be suitable for use in life-support devices or systems or other critical applications. inclusion of ti products in such applications is understood to be fully at the customer's risk. in order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. ti assumes no liability for applications assistance or customer product design. ti does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of ti covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. ti's publication of information regarding any third party's products or services does not constitute ti's approval, warranty or endorsement thereof. copyright ? 1999, texas instruments incorporated
|
