ST750AC datasheet(7/14 Pages) STMICROELECTRONICS

部件名	ST750AC

功能描述	Adjustable step-down, current-mode PWM DC-DC converters

PDF	14 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

7 / 14 page

ST750A

Electrical characteristics

7/14

Electrical characteristics

Table 4.

Electrical characteristics (VCC=5V, IO = 0mA, TA = TMIN to TMAX, unless otherwise

specified).

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VCC

Input voltage

Output voltage

VCC = 6 to 11V, IO = 0 to 450mA

4.75

5.25

ΔVO

Line regulation

VCC = 4 to 11V

0.15

%/V

ΔVO

Load regulation

IO = 0 to 450mA

0.005

%/mA

Power efficiency

IO = 300mA

ISUPPLY Supply current

ON Mode

0.8

2.5

OFF Mode, SHDN = 0

0.3

100

µA

VIH

SHDN Input high threshold

VIL

SHDN Input low threshold

VCC Falling

0.25

ISHDN

Shutdown input leakage current ILX = 500mA

μA

VLOCK

Under voltage lockout

VCC = 12V, VLX = 0V

2.7

RDS(on) LX On resistance

TA = 25°C

0.5

ILX

LX Leakage current

µA

VREF

Reference voltage

1.17

1.24

1.31

ΔVREF Temperature reference drift

ppm/°C

fOSC

Switching frequency

C series

160

200

280

KHz

Compensation pin impedance

7500

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