ST STMPS2242, STMPS2252, STMPS2262, STMPS2272 User Manual

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
switches for power distribution systems that
require multiple power switches in a single
package.

Table 1. Device summary

Ω MOSFET high-side power

STMPS2242, STMPS2252
STMPS2262, STMPS2272

SO-8

MSOP8

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.

Order code

SO-8 MSOP8

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.

January 2011 Doc ID 15050 Rev 3 1/42

(1)

Current limit

(mA)

Enable Packing

www.st.com

42

Contents STMPS2242, STMPS2252, STMPS2262, STMPS2272

Contents

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

2 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1 Fault blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Overcurrent/overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Reverse current blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4 UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6.1 STMPS2242, STMPS2252 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 13

6.1.1 Turn-on/off characteristics for VI = 3 V, R

6.1.2 Turn-on/off characteristics for V

6.1.3 UVLO characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.1.4 Overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.1.5 Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

= 5 V, R

I

= 6 Ω . . . . . . . . . . . . . . . 13

LOAD

= 10 Ω . . . . . . . . . . . . . . 16

LOAD

6.2 STMPS2262, STMPS2272 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2.1 Turn-on/off characteristics for VI = 3 V, R

6.2.2 Turn-on/off characteristics for V

6.2.3 UVLO characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.2.4 Overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.2.5 Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

= 5 V, R

I

= 3 Ω . . . . . . . . . . . . . . . 24

LOAD

= 5 Ω . . . . . . . . . . . . . . . 27

LOAD

7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.1 Input and output capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

2/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Contents

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Doc ID 15050 Rev 3 3/42

List of tables STMPS2242, STMPS2252, STMPS2262, STMPS2272

List of tables

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

Table 2. Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 4. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 6. Current limit characteristics

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 10

Table 7. Supply current characteristics

Table 8. Thermal characteristics

Table 9. UVLO characteristics

Table 10. OCx pin characteristics

Table 11. ENx pin characteristics

Table 12. SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 13. MSOP8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 14. Reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 15. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

I

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 11

I

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 11

I

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12

I

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12

I

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12

I

4/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 List of figures

List of figures

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

Figure 2. Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3. Turn-on for C
Figure 4. Turn-on for C
Figure 5. Turn-on for C
Figure 6. Turn-off for C
Figure 7. Turn-off for C
Figure 8. Turn-off for C
Figure 9. Turn-on for C
Figure 10. Turn-on for C
Figure 11. Turn-on for C
Figure 12. Turn-off for C
Figure 13. Turn-off for C
Figure 14. Turn-off for C
Figure 15. UVLO, V
Figure 16. UVLO, V

rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

I

falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

I

Figure 17. Overcurrent protection characteristics, V
Figure 18. Overcurrent protection characteristics, V
Figure 19. I
Figure 20. t
Figure 21. t

versus VI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

CC

versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

r

versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

f

Figure 22. Rds(on) versus V
Figure 23. Turn-on for C
Figure 24. Turn-on for C
Figure 25. Turn-on for C
Figure 26. Turn-off for C
Figure 27. Turn-off for C
Figure 28. Turn-off for C
Figure 29. Turn-on for C
Figure 30. Turn-on for C
Figure 31. Turn-on for C
Figure 32. Turn-off for C
Figure 33. Turn-off for C
Figure 34. Turn-off for C
Figure 35. UVLO, V
Figure 36. UVLO, V

rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

I

falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

I

Figure 37. Overcurrent protection characteristics, V
Figure 38. Overcurrent protection characteristics, V
Figure 39. I
Figure 40. t
Figure 41. t

versus VI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

CC

versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

r

versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

f

Figure 42. Rds(on) versus V

Figure 43. SO-8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 44. MSOP8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 45. SO-8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 46. MSOP8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 47. Reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

LOAD

= 3 V, R

I

= 5 V, R

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

I

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

LOAD

= 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

LOAD

= 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

LOAD

= 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

LOAD

= 3 V, R

I

= 5 V, R

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

I

= 2.2 Ω . . . . . . . . . . . . . . . . . . . . 21

LOAD

= 2.2 Ω . . . . . . . . . . . . . . . . . . . . 21

LOAD

= 1 Ω . . . . . . . . . . . . . . . . . . . . . . 32

LOAD

= 1 Ω . . . . . . . . . . . . . . . . . . . . . . 32

LOAD

Doc ID 15050 Rev 3 5/42

Block diagram STMPS2242, STMPS2252, STMPS2262, STMPS2272

1 Block diagram

Figure 1. Block diagram

).

%.

%.



$RIVER

4HERMAL

SENSE



$RIVER

#URRENT

SENSE





56,/



&AULTBLANKINGREPORTING

DRIVERCONTROLUNIT

#URRENT
SENSE





/54

/#

/#

/54

!-6

6/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Pin descriptions

2 Pin descriptions

Figure 2. Pinout

GND

IN

EN1

EN2

Table 2. Pin descriptions

Pin number Name Type Function

1GND

2IN

3EN1/EN1 I

4EN2

5OC2

6OUT2

7OUT1

8OC1

/EN2 I

1

2

3

4

− Ground

− V

O Open drain output for fault indication of channel 2

CC

Channel 1 active low (STMPS2242 and STMPS2262)
or active high (STMPS2252 and STMPS2272) enable

Channel 2 active low (STMPS2242 and STMPS2262)
or active high (STMPS2252 and STMPS2272) enable

− Output of channel 2

− Output of channel 1

O Open drain output for fault indication of channel 1

8

7

6

5

input, 2.7 - 5.5 V

OC1

OUT1

OUT2

OC2

Doc ID 15050 Rev 3 7/42

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. 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 have fault­blanking. Die overtemperature faults and input voltage drops below the UVLO threshold
cause an immediate fault output.

3.2 Overcurrent/overtemperature protection

In overcurrent or short-circuit condition, the switch limits the current at 500 mA for
STMPS2242/STMPS2252 and 1000 mA for STMPS2262/STMPS2272. If the temperature
of the die goes above the limit value, the switch turns OFF.

3.3 Reverse current blocking

When the switch is OFF, or when the STMPS device is not powered (VCC=0 V), the switch
behaves as a Hi-Z at the output pin, ensuring that no reverse current will flow into the device
when V

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

reverse current will occur.

I<VO

.

3.4 UVLO

When the input voltage drops below the threshold value, the power switch turns OFF to
prevent improper operation due to low voltage.

is applied to the OUT pin, a

I

8/42 Doc ID 15050 Rev 3

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Maximum rating

4 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.

4.1 Absolute maximum rating

Table 3. Absolute maximum ratings

Symbol Parameter Value Unit

V

V

V

O

IENx

I

O

Input voltage range –0.3 – 6.0 V

I

Output voltage range –0.3 – (VI+0.3) V

EN input voltage range –0.3 – 6.0 V

Continuous output current Internally limited

ESD ESD protection level 8 kV

T

T

STG

T

R

T

R

Junction operating temperature –40 to 125 °C

J

Storage temperature –55 to 150 °C

Thermal resistance (MSOP8) 220 °C/W

Thermal resistance (SO-8) 160 °C/W

4.2 Recommended operating conditions

Table 4. Recommended operating conditions

Symbol Parameter

V

I

V

O

I

O

(STMPS2242
STMPS2252)

I

O

(STMPS2262
STMPS2272)

Input voltage 2.7 5.0 5.5 V

Output voltage 0 5.0 5.5 V

Continuous output current 0 - 500 mA

Continuous output current 0 - 1000 mA

Val ue

Unit

Min Typ Max

Doc ID 15050 Rev 3 9/42

Electrical specifications STMPS2242, STMPS2252, STMPS2262, STMPS2272

5 Electrical specifications

Table 5. Electrical characteristics

Val ue

Symbol Parameter Test conditions

=2.7V

V

I

= 25°C

T

Rds(on)

Rds(on)

Static drain source
ON state resistance

Static drain source
ON state resistance

Output rise time
(STMPS2242,STMPS2252)

t

r

Output rise time
(STMPS2262,STMPS2272)

Output fall time
(STMPS2242,STMPS2252)

t

f

Output fall time
(STMPS2262,STMPS2272

Table 6. Current limit characteristics

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified)

I

J

=5.0V

V

I

= 25°C;

T

J

=2.7V

V

I

=5.0V

I

=5.0V

I

LOAD

LOAD

=5.0V

I

LOAD

LOAD

<125°C

J

<125°C

J

=10Ω
=1µF

=10Ω
=1µF

-40 < T

V

-40 < T

V
R
C

V
R
C

VI=5.0V
R

=10Ω

LOAD

=1µF

C

LOAD

V

=5.0V

I

=10Ω

R

LOAD

=1µF

C

LOAD

Symbol Parameter Test condition

Min Typ Max

120 160 mΩ

105 115 mΩ

200

140

0.05 2 ms

0.05 2 ms

0.05 2 ms

0.05 2 ms

Val ue

Min Typ Max

Unit

mΩ

Unit

I

OS

(STMPS2242
STMPS2252)

IOS
(STMPS2262
STMPS2272)

Short circuit output
current

V

=5V

I

OUT connected to
GND through 10 mΩ
load, device enabled
into short circuit

10/42 Doc ID 15050 Rev 3

0.6 0.8 1.0 A

1.1 1.6 2.0 A

STMPS2242, STMPS2252, STMPS2262, STMPS2272 Electrical specifications

Table 7. Supply current characteristics

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified)

I

Val ue

Symbol Parameter Test condition

Min Typ Max

Unit

1. I

I

off

I

on

I

leakage

I

reverse

leakage

Switch turned off

Switch turned on

Output leakage
current

Reversed leakage
current

= I

off-ground

- I

(1)

, where I

off

No load
Switch is off

No load
Switch is off

-40 < TJ< 125°C

No load
Switch is on

No load
Switch is on

-40 < TJ< 125°C

I

off (grounded output)

I

off (floating output)

I

off (grounded output)

I

off (floating output)

-

-

-40 < TJ< 125°C

Switch is off

< VO,

V

I

Output connected to

5.5 V, 25°C

Switch is off
VI < V

O

Output connected to

5.5 V, 125°C

= current into IN when switch is off and output is grounded

off-ground

914

μA

16

50 70

μA

85

12

μA

16

12

μA

110

Table 8. Thermal characteristics

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified)

I

Val ue

Symbol Parameter Test condition

Min Typ Max

T1

T2

Thermal shutdown
threshold

Recovery from
thermal shutdown

135 °C

125 °C

Hysteresis 10 °C

Doc ID 15050 Rev 3 11/42

Unit

Electrical specifications STMPS2242, STMPS2252, STMPS2262, STMPS2272

Table 9. UVLO characteristics

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified)

I

Val ue

Symbol Parameter Test condition

Min Typ Max

Unit

V

UVLO

Undervoltage lockout
threshold

2.0 2.5 V

Hysteresis 75 mV

Table 10. OCx pin characteristics

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified)

I

Val ue

Symbol Parameter Test condition

Min Typ Max

OC blanking

V

O

I

off

Table 11. ENx pin characteristics

OCx assertion and
de-assertion

4815ms

Output low voltage IO=5mA −−0.4 V

Off current

(V

= 5.5 V, IO= rated current, TJ= 25°C, unless otherwise specified)

I

VOC = 2.7V, 5.5V
(No OC condition)

−−1.0 µA

Val ue

Symbol Parameter Test condition

Min Typ Max

V

IH

High level input
voltage

V

= 2.7 V to 5.5 V 2.0 −−V

I

Unit

Unit

= 4.5 V to 5.5 V −−0.8 V

V

V

IL

I

I

t

on

t

off

1. Not tested in production, specified by design.

Low level input
voltage

Input current V

Turn ON time

Turn OFF time

(1)

(1)

I

= 2.7 V to 4.5 V −−0.4 V

V

I

=0V or V

IENx

R

=10Ω

LOAD

C

= 100 μF

LOAD

R

=10Ω

LOAD

= 100 μF

C

LOAD

12/42 Doc ID 15050 Rev 3

I

-0.5 − 0.5 µA

−−5ms

−−10 ms

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, R

Figure 3. Turn-on for C

LOAD

= 1 µF

LOAD

= 6 Ω

Doc ID 15050 Rev 3 13/42