IP1524 Ver la hoja de datos (PDF) - Semelab - > TT Electronics plc

Número de pieza

componentes Descripción

Fabricante

IP1524

REGULATING PULSE WIDTH MODULATORS

Semelab - > TT Electronics plc  

SEME

LAB

IP1524 SERIES

DESCRIPTION

The IP1524 series of PWM switching regulator control circuits contains all the functions required to implement single-

ended or push-pull switching regulators. Included are voltage reference, error amplifer, oscillator, PWM comparator,

output drivers, current limiting and shutdown circuitry.

Although functionally indentical to the SG1524 series, SEMELAB has incorporated several improvements to the IP1524

allowing tighter and more complete specification of electrical performance.

BLOCK DIAGRAM

15

VIN

6

RT

7

CT

INV. 1

INPUT

2

N.I.

INPUT

8

GND

(SUBSTRATE)

10

SHUTDOWN

REFERENCE

REGULATOR

16

+5V TO ALL

INTERNAL CIRCUITRY

OSCILLATOR

OSCILLATOR

OUTPUT

3

FLIP

FLOP

NOR

+5V

COMPARATOR

NOR

ERROR

AMP

+5V

+5V

C.L.

9

COMPENSATION

4 +SENSE

5 –SENSE

1kΩ

10kΩ

12

CA

11

EA

13

CB

14 EB

RECOMMENDED OPERATING CONDITIONS

VIN

Input Voltage

Collector Voltage

Error Amp Common Mode Range

Output Current

(each transistor)

Reference Load Current

Oscillator Charging Current

Oscillator Frequency Range

RT

CT

TAMB

Oscillator Timing Resistor

Oscillator Timing Capacitor

Operating Ambient Temperature Range

IP1524

IP2524

IP3524

+8 to +40V

0 to +40V

+1.8 to +3.4V

0 to 100mA

0 to 20mA

30µA to 2mA

50Hz to 500kHz

1.8kΩ to 100kΩ

1nF to 0.1µF

–55 to +125°C

-25 to +85°C

0 to +70°C

Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.

Prelim. 3/95

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