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may 2007 rev 3 1/13 13 features 80m ? high-side mosfet switch 500ma continuos current per channel independent thermal and short-circuit protection with overcurrent logic output operating range from 2.7v to 5.5v cmos- and ttl-compatible enable inputs 10ms oc_n fault blanking 2.5ms typical rise time under voltage lock out 10 a maximum standby supply current ambient temperature range, -40c to 85c esd protection description the st2052 power distribution switches is intended for application where heavy capacitive loads and short circuits are likely to be encountered. these devices incorporate 80mw n-channel mosfet high-side power switches for power-distribution systems that require multiple powers switches in a single package. each switch is controlled by an independent logic enable input. gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. the charge pump requires no external components and allows operation from supplies as low as 2.7 v. when the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (ocx ) logic output low. a 10ms deglitching circuit provides fault-blanking feature, preventing the oc_n pin to be asserted during hot-insertion or short spikes of overcurrent conditions. when continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. recovery from a thermal shutdown is automatic once the device has cooled sufficiently. internal circuitry ensures the switch remains off until valid input voltage is present. these power-distribution switches are designed to current limit at 0.9 a so-8 st2052 current limited power distribution switches www.st.com table 1. device summary part number package packaging st2052bd so-8 tu b e (50 parts per tube, 40 tube per box) st2052bdr so-8 tape and reel (2500 parts per reel)
contents st2052 2/13 contents 1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
st2052 block diagram 3/13 1 block diagram figure 1. block diagram
pin connections st2052 4/13 2 pin connections figure 2. pin connections (top view) table 2. pin functions pln n symbol description 1 gnd ground 2 in input voltage 3 en1 enable input. logic high turns on power switch in-out1 4 en2 enable input. logic high turns on power switch in-out2 5 oc2 overcurrent. logic ou tput active low in-out2 6 out2 power switch output 7 out1 power switch output 8 oc1 overcurrent. logic ou tput active low in-out2
st2052 electrical ratings 5/13 3 electrical ratings 3.1 absolute maximum ratings stressing the device above the rating listed in the ?absolute maximum ratings? table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. refer also to the stmicroelectronics sure program and other relevant quality documents. 3.2 recommended operating conditions table 3. absolute maximum ratings symbol parameter value unit v i input voltage range (1) 1. all voltage are referred to gnd -0.3 to 6 v v o output voltage range (1) -0.3 - (v i + 0.3) v v ienx en input voltage range -0.3 to 6 v i o continuous output current internally limited esd electrostatic discharge 2 kv t j junction operating temperature -40 to 125 c table 4. recommended operating conditions symbol parameter min typ max unit v i input voltage range (1) 1. all voltage are referred to gnd 2.7 5.5 v v o output voltage range (1) 05.5v i o continuous output current (per switch) 0 500 ma
electrical characteristics st2052 6/13 4 electrical characteristics v i = 5.5v, i o = rated current, v ien = v i , t j = 25c, unless otherwise specified. (see note 1 ) table 5. power switch electrical characteristics symbol parameter test co nditions min typ max unit r ds(on) static drain-source on-state resistance v i = 5v i o = 0.5a 80 100 m ? v i = 5v i o = 0.5a, t j = 85c 90 120 v i = 5v i o = 0.5a, t j =125c 100 135 v i = 3.3v i o = 0.5a 90 125 v i = 3.3v i o = 0.5a, t j = 85c 110 145 v i = 3.3v i o = 0.5a, t j = 125c 120 160 t r output rise time v i = 5.5v r l = 10, c l = 1f 2.5 ms v i = 2.7v 3 t f output fall time v i = 5.5v 0.3 ms v i = 2.7v 0.2 table 6. enable input enx characteristics symbol parameter test conditions min typ max unit v ih high level input voltage v i = 2.7v to 5.5v 2 v v il low level input voltage v i = 4.5v to 5.5v 0.8 v v i = 2.7v to 4.5v 0.4 i i input current v ienx = 0v or v i -0.5 0.5 a t on turn-on time r l = 10 ? c l =100 f20ms t off turn-off time r l = 10 ? c l =100 f40ms table 7. current limit characteristics symbol parameter test conditions min typ max unit i os short circuit output current v i = 5v, out connected to gnd, device enabled into short circuit 0.7 1 1.3 a
st2052 electrical characteristics 7/13 note: 1 pulse testing techniques maintain junction temperature close to ambient temperature: thermal effect must be takes into account separately. 2 specified by design, not production tested. 3 guaranteed by design. table 8. supply current characteristics symbol parameter test conditions min. typ. max. unit i sol current low level output v ienx = v i , no load, 0.025 1 a v ienx = v i , no load, t j =-40 to 125c 10 i soh current low high output v ienx = 0, no load, 70 90 a v ienx = 0, no load, t j =-40 to 125c 100 i l output leakage current v ienx = v i , output connected to gnd, t j =-40 to 125c 10 a table 9. undervoltage characteristics symbol parameter test cond itions min. typ. max. unit v il low level input voltage 22.5v v hys hysteresis 100 mv table 10. overcurrent (oc ) characteristics symbol parameter test conditions min. typ. max. unit i sink sink current v o = 5v 10 ma v o output low voltage i o = 5ma 0.5 v i off off-state current v o = 5v v o = 3.3v 1 a t fb fault-blanking period v i = 5.5v, t j = 25c (see note 2 and 3) 210 ms
electrical characteristics st2052 8/13 figure 3. test circuit figure 4. waveform - propagation delays (f=1mhz; 50% duty cycle)
st2052 package mechanical data 9/13 5 package mechanical data in order to meet environmental requirements, st offers these devices in ecopack? packages. these packages have a lead-free second level interconnect. the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com
package mechanical data st2052 10/13 dim. mm. inch min. typ max. min. typ. max. a 1.35 1.75 0.053 0.069 a1 0.10 0.25 0.04 0.010 a2 1.10 1.65 0.043 0.065 b 0.33 0.51 0.013 0.020 c 0.19 0.25 0.007 0.010 d 4.80 5.00 0.189 0.197 e 3.80 4.00 0.150 0.157 e 1.27 0.050 h 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 k ? (max.) ddd 0.1 0.04 so-8 mechanical data 0016023/c 8
st2052 package mechanical data 11/13 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 8.1 8.5 0.319 0.335 bo 5.5 5.9 0.216 0.232 ko 2.1 2.3 0.082 0.090 po 3.9 4.1 0.153 0.161 p 7.9 8.1 0.311 0.319 tape & reel so-8 mechanical data
revision history st2052 12/13 6 revision history 1 table 11. revision history date revision changes 13-jul-2005 2 add bullet on pag. 1, add paragraph in the description on pag. 1 and add row t fb on table 10. 30-may-2007 3 updated features in cover page, document reformatted
st2052 13/13 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2007 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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