ST2041BDR

ST2041 Enhanced power switch Not recommended for new design Features ■ 90 mΩ high-side MOSFET switch ■ 500 mA continuous current per channel ■ Thermal and short-circuit protection with overcurrent logic output ■ Operating range from 2.7 to 5.5 V ■ CMOS- and TTL-compatible enable inputs ■ 2.5 ms typical rise time ■ Undervoltage lock out ■ 10 µA maximum standby supply current ■ Ambient temperature range, 0 °C to 85 °C ■ 2 kV ESD protection ■ Fault-blanking Table 1. ) s ( ct u d o r P e SO-8 ) (s Device summary Order code t c u ST2041BDR(1) t e l o s b O Package Packaging SO-8 Tape and reel d o r 1. Not recommended for new design (refer to STMPS2141MTR). Contact ST sales office for availability. P e t e l o s b O November 2010 Doc ID 12592 Rev 3 This is information on a product still in production but not recommended for new designs. 1/13 www.st.com 13 Contents ST2041 Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Schematic diagram and pin connections . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Functional descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 Fault-blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Overcurrent/overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.3 Undervoltage lock out (UVLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ) s ( ct u d o 4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 r P e Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 t e l o 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 ) (s s b O t c u d o r P e t e l o s b O 2/13 Doc ID 12592 Rev 3 ST2041 1 Description Description The ST2041 power distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 90 mΩ N-channel MOSFET high-side power switches for power-distribution. The switch is controlled by a 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, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent logic output low. 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. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 12592 Rev 3 3/13 Schematic diagram and pin connections 2 ST2041 Schematic diagram and pin connections Figure 1. Schematic diagram EN_N ) s ( ct u d o r P e t e l o Figure 2. s b O Pin connections (top view) ) (s t c u d o r P e t e l o Table 2. bs O 4/13 EN_N Pin functions Pin Name Type Description 1 GND - Ground 2 IN1 - VCC input, 2.7-5.5 V 3 IN2 - VCC input, 2.7-5.5 V 4 EN_N I Enable (active low) 5 OC O Open drain output for fault indication 6 OUT3 - Output 7 OUT2 - Output 8 OUT1 - Output Doc ID 12592 Rev 3 ST2041 Functional descriptions 3 Functional descriptions 3.1 Fault-blanking ST devices feature a 10 ms fault-blanking. Fault-blanking allows current-limit faults, including momentary short-circuit faults that occur when hot-swapping a capacitive load, and also ensures that no fault is issued during power-up. When a load transient causes the device to enter current limit, an internal counter starts. If the load fault persists beyond the 10 ms faultblanking timeout, the FAULT output asserts low. Load-transient faults less than 10 ms (typical) will not cause a FAULT output assertion. Only current-limit faults are blanked. Die overtemperature faults and input voltage drops below the undervoltage lock out (UVLO) threshold will cause an immediate fault output. 3.2 Overcurrent/overtemperature protection ) s ( ct u d o In overcurrent or short-circuit condition, the switch limits the current at 500 mA. If temperature of die goes above limit value, the switch turns OFF. 3.3 r P e t e l o Undervoltage lock out (UVLO) s b O When input voltage drops below critical value, the power switch turns OFF to prevent improper operation due to low voltage. ) (s t c u d o r P e t e l o s b O Doc ID 12592 Rev 3 5/13 Maximum rating 4 ST2041 Maximum rating 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. Table 3. Absolute maximum ratings Symbol Parameter VI Input voltage range VO Output voltage range VIENX IO ESD TJ Value Table 4. od r P e V V Internally limited ESD protection level Storage temperature uc -0.3-6.0 Continuous output current Junction operating temperature V -0.3-(Vi+0.3) EN input voltage range let 2 kV -40 to 125 °C -55 to 150 °C Recommended operating conditions Symbol Parameter Min Typ Max Unit 2.7 5.0 5.5 V VI Input voltage VO Output voltage 0 5.0 5.5 V IO Continuous output current 0 - 500 mA s b O 6/13 ) s ( t -0.3-6.0 o s b Recommended operating conditions O ) s ( t c u d o r P e t e ol TSTG Unit Doc ID 12592 Rev 3 ST2041 5 Electrical characteristics Electrical characteristics Table 5. Electrical characteristics (TJ = 25 °C, VI = 5.0 V) Symbol Parameter Static drain-source RDS(on) on-state resistance Test conditions tr tf Max VI = 3.3 V -40 < TJ < 125 °C 100 145 VI = 5.0 V -40 < TJ < 125 °C 90 135 VI = 3.3 V TJ = 25 °C 90 130 VI = 5.0 V TJ = 25°C 80 VI = 2.7 V RL = 10 Ω CL = 1 μF ct e t e ol VI = 2.7 V RL = 10 Ω CL = 1 μF Unit mΩ ) s ( ct 110 u d o s b O VI = 5.5 V RL = 10 Ω CL = 1 μF ) (s Output fall time(1) u d o Typ VI = 5.5 V RL = 10 Ω CL = 1 μF Output rise time(1) Min Pr 2.5 ms 3 ms 0.3 ms 0.2 ms TON Turn-on time(1) RL = 10 Ω CL = 100 μF 20 ms TOFF Turn-off time(1) RL = 10 Ω CL = 100 μF 40 ms r P e t e l o 1. Not tested in production, specified by design. s b O Doc ID 12592 Rev 3 7/13 Electrical characteristics Table 6. Current limit characteristics (VI = 5.5 V, IO = rated current, TJ = 25 °C, unless otherwise specified) Symbol IOS Table 7. ST2041 Parameter Test conditions VI = 5 V OUT connected to GND, device enabled into shortcircuit Short-circuit output current Min Typ Max Unit 0.7 1.0 1.3 A Supply current characteristics (VI = 5.5 V, IO = rated current, TJ = 25 °C, unless otherwise specified) Symbol Parameter Test conditions Min No load IOFF Switch turned OFF ION Switch turned ON ct 10 μA 90 μA 100 μA 10 μA 20 μA t e l o Output grounded, switch is OFF; -40 < TJ < 125 °C s b O μA Thermal characteristics (VI = 5.5 V, IO = rated current, TJ = 25 °C, unless otherwise specified) )- Parameter s ( t c Test conditions Min Typ Max Unit Thermal shutdown threshold 135 °C T2 Recovery from thermal shutdown 125 °C u d o Hysteresis r P e Table 9. VUVLO Hyst Table 10. Symbol 10 Parameter Test conditions Undervoltage lockout threshold IOFF Min Typ 2.0 Hysteresis Max Unit 2.5 V 100 mV OC pin characteristics (VI = 5.5 V, IO = rated current, TJ = 25 °C, unless otherwise specified) Parameter Test conditions Min Typ Max Unit 4 8 15 mS Output low voltage 0.4 V OFF current 1.0 μA OC OCx assertion and de-assertion(1) blanking VO °C UVLO characteristics (VI = 5.5 V, IO = rated current, TJ = 25 °C, unless otherwise specified) Symbol 1. Not tested in production, specified by design. 8/13 (s) du P e Output leakage current Unit T1 Hyst s b O 5.0 ro No load; -40 < TJ < 125 °C Symbol t e l o 1.0 70 Output grounded, switch is OFF Table 8. Max No load; -40 < TJ < 125 °C No load Ileakage Typ Doc ID 12592 Rev 3 ST2041 Electrical characteristics Table 11. EN_N pin characteristics (VI = 5.5 V, IO = rated current, TJ = 25 °C, unless otherwise specified) Symbol Parameter VIH High level input voltage VIL Low level input voltage II Input current Test conditions VI = 2.7 to 5.5 V Min Typ Max 2.0 Unit V VI = 4.5 to 5.5 V 0.8 V VI = 2.7 to 4.5 V 0.4 V 0.5 μA VIENX = 0 V or VI -0.5 ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 12592 Rev 3 9/13 Package mechanical data 6 ST2041 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 10/13 Doc ID 12592 Rev 3 ST2041 Package mechanical data Figure 3. SO-8 package outline ) s ( ct u d o r P e t e l o Table 12. let O t c u SO-8 mechanical data od r P e Symbol o s b ) (s s b O Min Millimeters Typ inches Max Min Typ Max A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.004 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 0.15 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 ddd 8° (max.) 0.10 Doc ID 12592 Rev 3 0.004 11/13 Revision history 7 ST2041 Revision history 5 Table 13. Document revision history Date Revision 05-May-2006 1 Initial release. 20-Feb-2008 2 Document restructured and converted to new ST template, watermark removed. 3 Document reformatted, added “Not Recommended for New Design” and Note 1 below Table 1, updated ECOPACK® text in Section 6, corrected typo in Features, Section 1, Table 2, Section 3, Section 4, Table 3, Table 5 to Table 11. 24-Nov-2010 Changes ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 12/13 Doc ID 12592 Rev 3 ST2041 ) s ( ct Please Read Carefully: u d o 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 herein at any time, without notice. r P e 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 assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. t e l o No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If 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 whatsoever of such third party products or services or any intellectual property contained therein. ) (s s b O 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 PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. t c u UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, 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. d o r P e t e l o 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 whatsoever, any liability of ST. s b O 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. © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Doc ID 12592 Rev 3 13/13