ST STMPS2141, STMPS2151, STMPS2161, STMPS2171 User Manual

Enhanced single channel power switches

Features

■ 90 mΩ high-side MOSFET switch

■ 500/1000 mA continuous current

■ Thermal and short-circuit protection with

overcurrent logic output

■ Operating range from 2.7 V to 5.5 V

■ CMOS- and TTL-compatible enable inputs

■ Undervoltage lockout (UVLO)

■ 12 µA maximum standby supply current

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

■ 8 kV ESD protection

■ Reverse current protection

■ Fault-blanking

STMPS2141, STMPS2151
STMPS2161, STMPS2171

SOT23-5L

MSOP8

SO-8

Description

The STMPS2141, STMPS2151, STMPS2161,
STMPS2171 power distribution switches are
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. These switches are controlled
by a logic enable input.

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. 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 the switch off to prevent damage. Recovery
from a thermal shutdown is automatic once the
device has cooled sufficiently. Internal circuitry
ensures the switch remains off until a valid input
voltage is present.

Table 1. Device summary

Order codes

SO-8 SOT23-5L MSOP8

STMPS2141MTR STMPS2141STR STMPS2141TTR 500 Active low

STMPS2151MTR STMPS2151STR STMPS2151TTR 500 Active high

STMPS2161MTR STMPS2161STR STMPS2161TTR 1000 Active low

STMPS2171MTR STMPS2171STR STMPS2171TTR 1000 Active high

1. MSOP8 package is also known as “TSSOP8”

(1)

Current limit

(mA)

Enable

July 2009 Doc ID 13793 Rev 4 1/34

www.st.com

34

Contents STMPS2141, STMPS2151, STMPS2161, STMPS2171

Contents

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1 Fault blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2 Overcurrent/over-temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3 FAULT conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.4 Reversed current blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.5 UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7 Detail device characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7.1 STMPS2141, STMPS2151 additional electrical charts . . . . . . . . . . . . . . 16

7.1.1 Turn on/off characteristics at VOUT = 5.0 V . . . . . . . . . . . . . . . . . . . . . 16

7.1.2 Turn on/off characteristics at VOUT = 3.0 V . . . . . . . . . . . . . . . . . . . . . 17

7.1.3 UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7.1.4 OC protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.1.5 Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.2 STMPS2161, STMPS2171 electrical charts . . . . . . . . . . . . . . . . . . . . . . 21

7.2.1 Turn on/off characteristics at VOUT = 5.0 V . . . . . . . . . . . . . . . . . . . . . 21

7.2.2 Turn on/off characteristics at VOUT = 3.0 V . . . . . . . . . . . . . . . . . . . . . 22

7.2.3 UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.2.4 OC protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.2.5 Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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STMPS2141, STMPS2151, STMPS2161, STMPS2171 Contents

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Doc ID 13793 Rev 4 3/34

List of figures STMPS2141, STMPS2151, STMPS2161, STMPS2171

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2. SOT23-5L, SO-8 and MSOP8 pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3. Voltage output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 4. Voltage output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 5. Current output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 6. Current output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 7. Voltage output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 8. Voltage output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 9. Current output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10. Current output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 11. UVLO rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 12. UVLO falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 13. OC protection at VOUT = 3.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 14. OC protection at VOUT = 3.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 15. OC protection at VOUT = 5.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 16. OC protection at VOUT = 5.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 17. ICC vs VIN (enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 18. ICC vs temperature (enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 19. ICC vs VIN (disabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 20. ICC vs temperature (disabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 21. RDS ON vs VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 22. RDS ON vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 23. ILIMIT vs temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 24. Switch leakage vs temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 25. Output rise time vs. VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 26. Output fall time vs. VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 27. UVLO vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 28. Voltage output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 29. Voltage output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 30. Current output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 31. Current output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 32. Voltage output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 33. Voltage output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 34. Current output turn on delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 35. Current output turn off delay time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 36. UVLO rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 37. UVLO falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 38. OC protection at VOUT = 3.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 39. OC protection at VOUT = 3.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 40. OC protection at VOUT = 5.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 41. OC protection at VOUT = 5.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 42. ICC vs VIN (enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 43. ICC vs temperature (enabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 44. ICC vs VIN (disabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 45. ICC vs temperature (disabled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 46. RDS ON vs VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 47. RDS ON vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 48. ILIMIT vs temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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STMPS2141, STMPS2151, STMPS2161, STMPS2171 List of figures

Figure 49. Switch leakage vs temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 50. Output rise time vs. VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 51. Output fall time vs. VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 52. UVLO vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 53. SOT23-5L package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 54. SOT23-5L footprint recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 55. SOT23-5L carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 56. SOT23-5L reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 57. SO-8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 58. MSOP8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 59. SO-8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 60. MSOP8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 61. Reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Doc ID 13793 Rev 4 5/34

List of tables STMPS2141, STMPS2151, STMPS2161, STMPS2171

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 3. FAULT conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 4. SOT23-5L (160 °C/W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 5. MSOP8 (220 °C/W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 6. SO-8 (160 °C/W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 7. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 8. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 9. SOT-23-5L electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 10. MSO8P/SO8 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 11. Current limit characteristics

(VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 14

Table 12. Supply current characteristics

(VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 14

Table 13. Thermal characteristics

(VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 15

Table 14. UVLO characteristics

(VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 15

Table 15. OC pin characteristics

(VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 15

Table 16. EN pin characteristics

(VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 15

Table 17. SOT23-5L mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 18. SOT23-5L footprint dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 19. SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 20. MSOP8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 21. Reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 22. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6/34 Doc ID 13793 Rev 4

STMPS2141, STMPS2151, STMPS2161, STMPS2171 Block diagram

1 Block diagram

Figure 1. Block diagram

V

EN

IN

Thermal

sense

Driver

UVLO

Fault blanking/reporting

driver control unit

Current

sense

V

OUT

Fault

Doc ID 13793 Rev 4 7/34

Pin settings STMPS2141, STMPS2151, STMPS2161, STMPS2171

2 Pin settings

2.1 Pin connections

Figure 2. SOT23-5L, SO-8 and MSOP8 pin connections

OUT

GND

FAULT

GND

EN_N

2.2 Pin description

Table 2. Pin description

IN

IN

SO-8 / MSOP8

1

2

3

SOT23-5L

1

2

3

4

5

4

8

7

6

5

IN

EN

OUT

OUT

OUT

FAULT

Pin number

Name Function

SO8 MSOP8 SOT23-5L

1 1 2 GND Ground

2 2 5 IN 2.7 V - 5.5 V input

3 3 - IN 2.7 V - 5.5 V input

4 4 4 EN Enable for power switch

5 5 3 FAULT Open drain FAULT indicator, active low

6 6 1 OUT Output of power switch

7 7 - OUT Output of power switch

8 8 - OUT Output of power switch

8/34 Doc ID 13793 Rev 4

STMPS2141, STMPS2151, STMPS2161, STMPS2171 Functional description

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. If the load fault persists beyond the

10 ms fault-blanking timeout, the FAULT output asserts “low”. Load-transient faults less than

10 ms (typ.) do not cause a FAULT output assertion. Only current-limit faults are blanked.

Die over-temperature faults and input voltage drops below the UVLO threshold cause an

immediate fault output.

3.2 Overcurrent/over-temperature protection

In overcurrent or short-circuit condition, the switch limits the current at a value of about

120% of the rated current. If the temperature of the die goes above the limit value, the switch

turns off.

3.3 FAULT conditions

In power switch applications, 4 types of FAULT conditions are common. These fault

conditions and the response of the STMPS21x1 power switches are described in the

following Ta bl e 3 .

Table 3. FAULT conditions

Fault Condition STMPS21x1 action

Output shorted to GND via resistance

Short circuit

Over-current

Overheating

Undervoltage

path of < 1 Ω, causing a rapid current
surge.

Output connected to a load that sinks
current above threshold.

Temperature of junction exceeds 135°C
due to any reason.

Input voltage drops below the UVLO
treshold.

Reduces output voltage to reduce the
current. Asserts FAULT pin after a
blanking period

Reduces output voltage to reduce the
current. Asserts FAULT pin after a
blanking period.

Turn OFF output until temperature falls
below 125°C. Asserts FAULT pin
immediately.

Turn OFF output until input voltage rises
above the UVLO treshold plus hysteresis.
Asserts FAULT pin immediately.

Doc ID 13793 Rev 4 9/34

Functional description STMPS2141, STMPS2151, STMPS2161, STMPS2171

3.4 Reversed current blocking

When the switch is OFF (disabled through the EN pin), or when the STMPS device is un-

powered (V

reverse current will flow into the device when V

Note: In the case where the switch is ON, and a voltage higher than V

a reverse current occurs. This operating condition is not allowed.

= 0 V) the switch behaves as an Hi-Z at the output pin, ensuring that no

CC

< Vo .

i

is applied to the OUT pin,

IN

3.5 UVLO

When the input voltage drops below critical values, the power switch turns off to prevent

improper operation due to low voltage.

10/34 Doc ID 13793 Rev 4

STMPS2141, STMPS2151, STMPS2161, STMPS2171 Ambient temperature

4 Ambient temperature

In Enable operating mode, an amount of power is dissipated as heat in the power switch due

to the on-resistance. The power dissipation is: P = I

Table 4. SOT23-5L (160 °C/W)

Part number Max current

STMPS2141

STMPS2151

STMPS2161

STMPS2171

Table 5. MSOP8 (220 °C/W)

Part number

STMPS2141

STMPS2151

Max R

0.50 A 130 mΩ 32.5 mW 6.2 118.8

1.00 A 130 mΩ 130.0 mW 24.8 100.2

Max

current

Max R

at 5 V

0.50 A 130 mΩ 32.5 mW 7.2 117.8

5V

ON

ON

at

Power

dissipation

Power

dissipation

2

R.

Temperature

difference

(junction and

ambient)

Temperature

difference

(junction and

ambient)

Maximum ambient

temperature

(at junction

temperature 125 °C)

Maximum ambient

temperature

(at junction temperature

125 °C)

STMPS2161

1.00 A 130 mΩ 130.0 mW 28.6 96.4

STMPS2171

Table 6. SO-8 (160 °C/W)

Part number Max current

STMPS2141

0.50 A 130 mΩ 32.5 mΩ 5.2 124.8

STMPS2151

STMPS2161

1.00 A 130 mΩ 130.0 mΩ 20.8 104.2

STMPS2171

Max R

at 5 V

ON

Power

dissipation

Temperature

difference (junction

and ambient)

Maximum ambient

temperature

(at junction temperature

125 °C)

Doc ID 13793 Rev 4 11/34