Semelab Plc IP3524J, IP3524D, IP2524D, IP2524N, IP2524J Datasheet

LAB

SEME

IP1524 SERIES

Semelab plc. Telephone [phone]. Telex: 341927. Fax [phone].

Prelim. 3/95

REGULATING

PULSE WIDTH

MODULATORS

FEATURES

• Guaranteed ±2% reference voltage tolerance

• Guaranteed ±6% oscillator tolerance

• Fully specified temperature performance

• Guaranteed 10mV/1000 hours long term stability

• Interchangeable with SG1524 series

+V

IN

Input Voltage
Collector Voltage
Output Current (each transistor)
Reference Load Current
Oscillator Charging Current
Shut Down Pin Voltage
Current Limit Sense Common Mode Range

P

D

Power Dissipation TA= 25°C

Derate @ TA> 50°C

P

D

Power Dissipation TC= 25°C

Derate @ TC> 25°C

T

J

Operating Junction Temperature

T

STG

Storage Temperature Range

T

L

Lead Temperature (soldering, 10 seconds)

+40V
+40V

100mA

Internally Limited

5mA

+5.5V

–1.0 to +1.0V

1W

10mW/°C

2W

16mW/°C

See Ordering Information

–65 to +150°C

+300°C

ABSOLUTE MAXIMUM RATINGS (T

case

= 25°C unless otherwise stated)

TOP VIEW

J Package – 16 Pin Ceramic DIP
N Package – 16 Pin Plastic DIP
D Package – 16 Pin Plastic (150) SOIC

8

1

2

3

4

5

6

7

14

13

12

11

10

9

15

16

INV. IN P UT

N. I. INPUT

OSC. OUTPUT

+C.L. SENSE

–C.L. SE NSE

R

T

C

T

GROUND

V

REF

V

IN

E

B

C

B

C

A

E

A

SHUTDOWN

COMPENSATION

Part J–Pack N–Pack D–16 Temp.
Number 16 Pin 16 Pin 16 Pin Range

IP1524 ✔ -55 to +125°C
IP2524 ✔✔✔-25 to +85°C
IP3524 ✔✔✔0 to +70°C

Order Information

Note:

To order, add the package identifier to the part number.
eg. IP1524J

IP3524D–16

LAB

SEME

IP1524 SERIES

Semelab plc. Telephone [phone]. Telex: 341927. Fax [phone].

Prelim. 3/95

V

R

C

+5V TO ALL
INTERNAL CIRCUITRY

INV.

INPUT

ERROR
AMP

REFERENCE
REGULATOR

OSCILLATOR

OSCILLATOR
OUTPUT

FLIP

FLOP

COMPARATOR

+5V

NOR

NOR

SHUTDOWN

C

E

C

E

+5V

C.L.

N.I.

INPUT

GND

(SUBSTRATE)

COMPENSATION

+SENSE
–SENSE

+5V

4

9

5

1

2

8

10

IN

T

T

15

6

7

A

A

B

B

12

11

13

14

16

3

1k

Ω

10k

Ω

+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

RECOMMENDED OPERATING CONDITIONS

DESCRIPTION

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

V

IN

Input Voltage
Collector Voltage
Error Amp Common Mode Range
Output Current (each transistor)
Reference Load Current
Oscillator Charging Current
Oscillator Frequency Range

R

T

Oscillator Timing Resistor

C

T

Oscillator Timing Capacitor

T

AMB

Operating Ambient Temperature Range IP1524

IP2524
IP3524