ST763A datasheet(4/10 Pages) STMICROELECTRONICS

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ST763A SERIES

4/10

ELECTRICAL CHARACTERISTICS (VCC=5V, IO = 0mA, TA = TMIN to TMAX, unless otherwise specified.)

TYPICAL APPLICATION CIRCUIT

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VCC

Input Voltage

3.3

Output Voltage

VCC = 4 to 11V

IO =0 to 300mA

VCC = 4.75 to 11V IO =0 to 500mA

3.135

3.3

3.465

∆V

Line Regulation

0.13

%/V

∆V

Load Regulatio

IO = 1 to 500mA

0.005

%/mA

Power Efficency

IO =300mA

IO =100mA

ISUPPLY Supply Current

ON Mode (Including Switch Current)

OFF Mode

0.6

0.2

2.5

100

µA

VIH

SHDN Input High Threshold

VIL

SHDN Input Low Threshold

0.25

ISHDN

Shutdown Input Leakage

Current

µA

VLOCK Under Voltage Lockout

VCC Falling

2.7

RDS(on) LX On Resistance

ILX=500mA

Ω

ILEAK

LX Leakage Current

VCC = 12V

VLX = 0V

VREF

Reference Voltage

TA = 25°C

1.18

1.25

1.32

∆V

REF

Temeperature Reference

Drift

TA = TMIN to TMAX

ppm/°C

fOSC

Switching Frequency

159

200

212.5

KHz

Compensation Pin

Impedance

7500

Ω

REF

SHDN

Vcc

OUT

GND

470 pF

220 µF

1 µF

1500 pF

100 µF

22 µH

Vout

Vin

0.047 µF

STPS330U

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