ST1S10PUR datasheet(6/26 Pages) STMICROELECTRONICS

Numer części	ST1S10PUR

Szczegółowy opis	3 A, 900 kHz, monolithic synchronous step-down regulator

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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Electrical characteristics

ST1S10

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4

Electrical characteristics

Table 5.

Electrical characteristics

VIN = VIN_SW = VIN_A = VINH = 12 V, VSYNC = GND, VOUT = 5 V, IOUT = 10 mA, CIN = 4.7 µF

+0.1 µF, COUT = 22 µF, L1 = 3.3 µH, TJ = -25 to 125°C (Unless otherwise specified, refer to

the typical application circuit. Typical values assume TJ = 25°C)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VFB

Feedback voltage

TJ = 25°C

784

800

816

mV

TJ = -25°C to 125°C

776

800

824

mV

IFB

VFB pin bias current

600

nA

IQ

Quiescent current

VINH > 1.2 V, not switching

1.5

2.5

mA

VINH < 0.4 V

2

6

µA

IOUT

Output current (1)

VIN = 2.5 V to 18 V

VOUT = 0.8 V to 13.6 V

(2)

3.0

A

VINH

Inhibit threshold

Device ON

1.2

V

Device OFF

0.4

V

IINH

Inhibit pin current

2

µA

%VOUT/ΔVIN Reference line regulation

2.5 V < VIN < 18 V

0.4

%VOUT/

ΔVIN

%VOUT/

ΔIOUT

Reference load regulation

10 mA < IOUT < 3 A

0.5

%VOUT/

ΔIOUT

PWM fs

PWM switching frequency

VFB = 0.7 V, Sync = GND

TJ = 25°C

0.7

0.9

1.1

MHz

DMAX

Maximum duty cycle (2)

85

90

%

RDSon-N

NMOS switch on resistance

ISW = 750 mA

0.10

Ω

RDSon-P

PMOS switch on resistance

ISW = 750 mA

0.12

Ω

ISWL

Switch current limitation

5.0

A

ν

Efficiency

IOUT = 100 mA to 300 mA

85

%

IOUT = 300 mA to 3 A

90

%

TSHDN

Thermal shut down

150

°C

THYS

Thermal shut down hysteresis

15

°C

VOUT/ΔIOUT Output transient response

100 mA < IOUT < 1 A,

tR = tF ≥ 500 ns

±5%VO

VOUT/ΔIOUT

@IO=short

Short circuit removal response

(overshot)

10 mA < IOUT < short

±10

%VO

FSYNC

SYNC frequency capture range

VIN = 2.5 V to 18 V,

VSYNC = 0 to 5 V

0.4

1.2

MHz

SYNCWD

SYNC pulse width

VIN = 2.5 V to 18 V

250

ns

VIL_SYNC

SYNC input threshold low

VIN = 2.5 V to 18 V

0.4

V

VIH_SYNC

SYNC input threshold high

VIN = 2.5 V to 18 V

1.6

V

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