ST1534A datasheet(3/15 Pages) STMICROELECTRONICS

3 / 15 page

ST1534A

3/15

TYPICAL APPLICATION CIRCUIT

ELECTRICAL CHARACTERISTICS (Tj =25°C, VI=5V, VAUX=3.3V, IO=10mA, CO =2.2µF,

unless otherwise specified)

Note 1: Guaranteed by design

Note 2: See timing diagram

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Input Voltage Range

4.5

5.5

IIN

Input Supply Current

VI ≥ 4.5V

IO = 0mA

VAUX =0V

VI ≥ 4.5V

IO = 0mA

VAUX = 3.3V

VI < 4.1V

IO = 0mA

VAUX =0V

VI < 4.1V

IO = 0mA

VAUX = 3.3V

IAUX

Auxliary Supply Current

VI = 0 V

2.2

VI = 5V

200

µA

3.3V VOLTAGE REGULATOR BLOCK

Output Voltage

Tj = 0 to 85 °C

3.18

3.3

3.42

∆V

Line Regulation

VI = 4.5 to 5.5V

0.04

0.5

∆V

Load Regulation

IO = 0 to 500mA

0.1

Dropout Voltage

IO = 500 mA Tj = 0 to 85 °C

1.15

Output Current Limit

Tj =0to 85°C

550

5V DETECT BLOCK

VTHL

Low Threshold Voltage

VI falling,

IO = 500 mA Tj = 0 to 85 °C

4.15

4.3

VHYST Hysteresis

200

DRIVE OUTPUT BLOCK

VDR

Drive Output Voltage

VI = 4.5 to 5.5V

IDR =200 µA

3.6

VIN-0.8

VI < 4.15V

IDR =200 µA

100

200

IDR

Drive Current

Sinking: VI = 4.15V

VDR = 1V

Sourcing: VI = 4.5V

VI -VDR = 2V

tDH

Drive High Delay (Note 1

and 2)

CDR = 1.2nF, VIN ramping up, measured

from VI =VTH(H) to VDR = 3.3V

Tj =0to 85°C

µs

tDL

Drive Low Delay (Note 1

and 2)

CDR = 1.2nF, VIN ramping down, measured

from VI =VTH(L) to VDR = 200mV

Tj =0to 85°C

µs

GND

OUT

4.7 µF

0.1 µF

3.3V

10 µF

0.1 µF

Vout=3.3V

0.1 µF

AUX

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