ST1S30PUR datasheet(6/11 Pages) STMICROELECTRONICS

部件名	ST1S30PUR

功能描述	3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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6 / 11 page

Electrical characteristics

ST1S30

6/11

Doc ID 17927 Rev 1

4

Electrical characteristics

Refer to Figure 3 application circuit VIN_SW = VIN_A = 5 V, VO = 1.2 V, C1 = 10 µF,

C2 = 22 µF, L1 = 2.2 µH, TJ = -25 to 125 °C (unless otherwise specified. Typical values are

referred to 25 °C)

Table 6.

Electrical characteristics for ST1S30

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

FB

Feedback voltage

784

800

816

mV

IFB

VFB pin bias current

600

nA

VI

Input voltage

IO = 10 mA to 3 A

2.7

5.5

V

UVLO

Under voltage lock out

threshold

VI Rising

2.3

V

Hysteresis

150

mV

OVP

Overvoltage protection

threshold

VO rising

1.05 VO 1.1 VO

V

Overvoltage protection

hysteresis

VO falling

5

%

IOVP

Overvoltage clamping current

VO = 1.2 V

300

mA

IQ

Quiescent current

VINH > 1.2 V, not switching

1.5

2.5

mA

VINH < 0.0 V, T = - 30 °C to 85 °C

1

IO

Output current

VI = 2.7 to 5.5 V

(1)

3A

%VO/ΔVI

Output line regulation

VI = 2.7 V to 5.5 V, IO = 100 mA

(1)

0.16

%VO/

ΔV

I

%VO/ΔIO

Output load regulation

IO = 10 mA to 3 A

(1)

0.2

%

PWMfS

PWM switching frequency

VFB = 0.65 V

1.2

1.5

1.8

MHz

DMAX

Maximum duty cycle

80

87

%

PG

Power good output threshold

0.92 VO

V

Power good output voltage low

ISINK = 6 mA open drain output

0.4

V

RDSON-N NMOS switch on resistance

ISW = 750 mA

0.1

Ω

RDSON-P PMOS switch on resistance

ISW = 750 mA

0.1

Ω

ISWL

Switching current limitation

(1)

3.7

4.4

5.1

A

ν

Efficiency (1)

IO = 10 mA to 100 mA, VO = 3.3 V

65

%

IO = 100 mA to 3 A, VO = 3.3 V

85

TSHDN

Thermal shutdown

150

°C

THYS

Thermal shutdown hysteresis

20

°C

%VO/ΔIO

Load transient response

IO = 100 mA to 1 A, TA = 25 °C

tR = tF ≥ 200 ns

(1)

-10

+10

%VO

%VO/ΔIO

Short circuit removal response

IO = 10 mA to IO = short,

TA = 25 °C

(1)

-10

+10

%VO

1.

Guaranteed by design, but not tested in production.

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