Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsPMICsPMIC - ELCs High side TSSOP 8

January 2011 Doc ID 15050 Rev 3 1/42

STMPS2242, STMPS2252

STMPS2262, STMPS2272

Enhanced dual-channel power switches

Features

■ 100 mΩ high-side MOSFET switch

■ 500 mA/1000 mA continuous current per

channel

■ Thermal protection

■ Independent short-circuit protection with

overcurrent logic output

■ Operating range from 2.7 V to 5.5 V

■ CMOS and TTL compatible inputs

■ 2.5 ms typical rise time

■ Undervoltage lockout

■ 13 µA maximum standby supply current

■ Ambient temperature range: -40 °C to 85 °C

■ 8 kV ESD protection

■ Reverse current protection

■ Fault blanking

Description

The STMPS2242/2252/2262/2272 power

distribution switches are intended for applications

where heavy capacitive loads and short-circuits

are likely to be encountered. These devices

incorporate 100 m

Ω MOSFET high-side power

switches for power distribution systems that

require multiple power switches in a single

package.

Each switch is controlled by an independent logic

enable input. 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. 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.

SO-8

MSOP8

Table 1. Device summary

Order code

Current limit

(mA)

Enable Packing

SO-8 MSOP8

(1)

STMPS2242MTR STMPS2242TTR 500 Active low Tape and reel

STMPS2252MTR STMPS2252TTR 500 Active high Tape and reel

STMPS2262MTR STMPS2262TTR 1000 Active low Tape and reel

STMPS2272MTR STMPS2272TTR 1000 Active high Tape and reel

1. MSOP8 is also known as TSSOP8.

www.st.com

Summary of content (42 pages)

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STMPS2242, STMPS2252 STMPS2262, STMPS2272 Enhanced dual-channel power switches Features ■ 100 mΩ high-side MOSFET switch ■ 500 mA/1000 mA continuous current per channel ■ Thermal protection ■ Independent short-circuit protection with overcurrent logic output ■ Operating range from 2.7 V to 5.5 V ■ CMOS and TTL compatible inputs ■ 2.
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Contents STMPS2242, STMPS2252, STMPS2262, STMPS2272 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 3.1 Fault blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 9 Contents Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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List of tables STMPS2242, STMPS2252, STMPS2262, STMPS2272 List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. 4/42 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40.
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Block diagram 1 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Block diagram Figure 1. Block diagram /54 ). #URRENT SENSE %. $RIVER /# 56,/ 4HERMAL SENSE &AULT BLANKING REPORTING DRIVER CONTROL UNIT /# #URRENT SENSE %.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 2 Pin descriptions Pin descriptions Figure 2. Table 2.
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Functional description STMPS2242, STMPS2252, STMPS2262, STMPS2272 3 Functional description 3.1 Fault blanking The STMPS 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.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 4 Maximum rating 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. 4.
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Electrical specifications 5 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Electrical specifications Table 5. Electrical characteristics Value Symbol Parameter Test conditions Unit Min Rds(on) Rds(on) tr tf Static drain source ON state resistance Static drain source ON state resistance Max VI = 2.7 V TJ = 25°C 120 160 mΩ VI = 5.0 V TJ = 25°C; 105 115 mΩ VI = 2.7 V -40 < TJ < 125°C 200 VI = 5.0 V -40 < TJ < 125°C 140 mΩ VI = 5.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Table 7. Electrical specifications Supply current characteristics (VI = 5.
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Electrical specifications Table 9. STMPS2242, STMPS2252, STMPS2262, STMPS2272 UVLO characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition Unit Min VUVLO Undervoltage lockout threshold 2.0 Hysteresis Table 10. Typ Max 2.5 75 V mV OCx pin characteristics (VI = 5.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics 6 Typical operating characteristics 6.1 STMPS2242, STMPS2252 characteristics The waveforms and characteristics shown in this section pertain to the STMPS2252 device. The STMPS2242 is expected to have the same characteristics with inverted EN input function. All measurements are at ambient temperature 25 °C. 6.1.1 Turn-on/off characteristics for VI = 3 V, RLOAD = 6 Ω Figure 3.
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Typical operating characteristics 14/42 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 4. Turn-on for CLOAD = 100 µF Figure 5.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 6. Turn-off for CLOAD = 1 µF Figure 7.
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Typical operating characteristics Figure 8. 6.1.2 Turn-off for CLOAD = 470 µF Turn-on/off characteristics for VI = 5 V, RLOAD = 10 Ω Figure 9.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 10. Turn-on for CLOAD = 100 µF Figure 11.
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Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 12. Turn-off for CLOAD = 1 µF Figure 13.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 14.
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Typical operating characteristics 6.1.3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 UVLO characteristics Figure 15. UVLO, VI rising Figure 16.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 6.1.4 Typical operating characteristics Overcurrent protection characteristics Figure 17. Overcurrent protection characteristics, VI = 3 V, RLOAD = 2.2 Ω Figure 18. Overcurrent protection characteristics, VI = 5 V, RLOAD = 2.
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Typical operating characteristics 6.1.5 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Other electrical characteristics Figure 19. ICC versus VI 60 50 40 I CC (µA) EN = H 30 EN = L 20 10 0 2 3 4 5 6 VI (V ) AM045006v1 Figure 20. tr versus VI 5.0 4.5 4.0 3.5 3.0 t r (m s) C L OAD = 1 µF or 100 µF 2.5 C L OAD = 4 7 0 µF 2.0 1.5 1.0 0.5 0.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 21. tf versus VI 14 12 t f (m s) 10 C L OAD = 1 µF 8 C L OAD = 1 0 0 µF 6 C L OAD = 4 7 0 µF 4 2 0 0 1 2 3 4 5 6 V I (V ) AM045008v1 Figure 22. Rds(on) versus VI 130 120 Rd s(o n ) (m Ω) 110 100 90 80 70 60 2 2.5 3 3.5 4 V I (V ) Doc ID 15050 Rev 3 4.5 5 5.
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Typical operating characteristics 6.2 STMPS2242, STMPS2252, STMPS2262, STMPS2272 STMPS2262, STMPS2272 characteristics The waveforms and characteristics shown in this section pertain to the STMPS2272 device. The STMPS2262 is expected to have the same characteristics with inverted EN input function. All measurements are at ambient temperature 25 °C. 6.2.1 Turn-on/off characteristics for VI = 3 V, RLOAD = 3 Ω Figure 23.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 24. Turn-on for CLOAD = 100 µF Figure 25.
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Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 26. Turn-off for CLOAD = 1 µF Figure 27.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 28. Turn-off for CLOAD = 470 µF 6.2.2 Turn-on/off characteristics for VI = 5 V, RLOAD = 5 Ω Figure 29.
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Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 30. Turn-on for CLOAD = 100 µF Figure 31.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 32. Turn-off for CLOAD = 1 µF Figure 33.
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Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 34. Turn-off for CLOAD = 470 µF 6.2.3 UVLO characteristics Figure 35.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 36.
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Typical operating characteristics 6.2.4 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Overcurrent protection characteristics Figure 37. Overcurrent protection characteristics, VI = 3 V, RLOAD = 1 Ω Figure 38.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Other electrical characteristics Figure 39. ICC versus VI 60 50 I CC (µA) 40 EN = H 30 EN = L 20 10 0 2 3 4 5 6 V I (V ) AM045026v1 Figure 40. tr versus VI 3 2.5 2 C L OAD = 1 µF or 100 µF t r (m s) 6.2.5 Typical operating characteristics 1.5 C L OAD = 4 7 0 µF 1 0.
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Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 41. tf versus VI 7 6 5 C L OAD = 1 µF t f (m s) 4 C L OAD = 1 0 0 µF 3 C L OAD = 4 7 0 µF 2 1 0 0 1 2 3 4 5 6 V I (V ) AM045028v1 Figure 42. Rds(on) versus VI 130 120 Rd s(o n ) (m Ω) 110 100 90 80 70 60 2 2.5 3 3.5 4 4.5 5 5.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 7 Application information 7.1 Input and output capacitors Application information Input and output capacitors improve the performance of the device; the actual capacitance should be optimized for the particular application. For all applications, a 0.1 µF or greater ceramic bypass capacitor between IN and GND as close to the device as possible is recommended for local noise decoupling.
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Package mechanical data 8 STMPS2242, STMPS2252, STMPS2262, STMPS2272 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. Figure 43.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Table 12. Package mechanical data SO-8 mechanical data Millimeters Symbol Min Typ Max A 1.35 − 1.75 A1 0.10 − 0.25 A2 1.10 − 1.65 B 0.33 − 0.51 C 0.19 − 0.25 D (1) 4.80 − 5.00 E 3.80 − 4.00 e − 1.27 − H 5.80 − 6.20 h 0.25 − 0.50 L 0.40 − 1.27 k ddd 0° (min.), 8° (max.) − − 0.10 1. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, potrusions or gate burrs shall not exceed 0.
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Package mechanical data STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 44. MSOP8 package outline MSOP8_7277133_C Table 13. MSOP8 mechanical data Millimeters Symbol Min Typ Max A − − 1.10 A1 0 − 0.15 A2 0.75 0.85 0.95 b 0.22 − 0.40 c 0.08 − 0.23 D 2.90 3.00 3.10 D3 − 2.16 − E 4.67 4.90 5.07 E1 2.90 3.00 3.10 E5 − 1.73 − e − 0.65 − 1.95 − e1 38/42 L 0.40 − 0.80 L2 − 0.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 Package mechanical data Figure 45. SO-8 carrier tape 0010914_G Figure 46.
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Package mechanical data STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 47. Reel information Table 14. Reel mechanical data Millimeters Symbol Min A Max 330 C 12.8 D 20.2 N 60 T 40/42 Typ 13.2 22.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 9 Revision history Revision history Table 15. Document revision history Date Revision Changes 03-Dec-2008 1 Initial release. 18-Dec-2009 2 Modified: Table 6, Table 7 and Table 9. 19-Jan-2011 3 Added Section 6: Typical operating characteristics and Section 7: Application information; minor textual changes.
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STMPS2242, STMPS2252, STMPS2262, STMPS2272 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 herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.