Electrical characteristics

ST1S09

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Electrical characteristics

Note:

1

Guaranteed by design, but not tested in production.

Table 6.

Electrical characteristics for ST1S09PU Refer to Figure 21. application circuit

(unless otherwise specified. Typical values are referred to 25°C)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

FB

Feedback voltage

784

800

816

mV

600

nA

Input voltage

4.5

5.5

V

Under voltage lock out threshold

3.5

3.7

3.9

V

Hysteresis

150

mV

OVP

Over voltage protection

threshold

V

Over voltage protection

hysteresis

5

%

Overvoltage clamping current

300

mA

Quiescent current

Not switching

1.5

2.5

mA

Output current

2A

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

%

Power good output threshold

V

Power good output voltage low

0.4

V

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