ST1S09

Electrical characteristics

7/18

Note:

1

Guaranteed by design, but not tested in production.

Table 7.

Electrical characteristics for ST1S09IPU Refer to Figure 22. application circuit

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

FB

Feedback voltage

784

800

816

mV

600

nA

Minimum input voltage

2.7

V

OVP

Over voltage protection

threshold

V

Over voltage protection

hysteresis

5

%

Quiescent current

1.5

2.5

mA

1

µA

Output current

2A

Inhibit threshold

1.3

V

1.2

Device OFF

0.4

Inhibit pin current

2µA

Output line regulation

Note: 1

0.16

Output load regulation

0.2

0.6

PWM switching frequency

1.2

1.5

1.8

MHz

Maximum duty cycle

80

87

%

0.1

Ω

0.1

Ω

Switching current limitation

Note: 1

2.5

2.9

3.5

A

ν

Efficiency Note: 1

65

%

82

87

Thermal shutdown

150

°C

Thermal shutdown hysteresis

20

°C

Load transient response

-10

+10

Short circuit removal response

-10

+10