IP5661 データシートの表示（PDF） - Semelab - > TT Electronics plc

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IP5661

SWITCHED–MODE POWER SUPPLY CONTROL CIRCUIT

Semelab - > TT Electronics plc  

SEME

LAB

IP5661C

IP5561C

TOP VIEW

VCC 1

VZ 2

FEEDBACK 3

GAIN 4

8 GND

7 OUTPUT

CURRENT

6 SENSE

5 RT/CT

J Package – 8 Pin Ceramic DIP

N Package – 8 Pin Plastic DIP

D Package – 8 Pin Plastic (150) SOIC

BLOCK DIAGRAM

RT CT

5

SWITCHED–MODE

POWER SUPPLY

CONTROL CIRCUIT

FEATURES

• STABILISED POWER SUPPLY

• TEMPERATURE COMPENSATED REFERENCE

SOURCE

• SAWTOOTH GENERATOR

• PULSE WIDTH MODULATOR

• CURRENT LIMITING

• 8 PIN DIP

3

FEEDBACK

4

GAIN

CURRENT 6

SENSE

REFERENCE

VOLTAGE

ERROR

AMP

0.5V

SAWTOOTH

GENERATOR

PWM

S

LATCH

R

STABILISED

SUPPLY

1

VCC

8

GND

VCC

DESCRIPTION

The IP5561 is a control circuit for use in switched

mode power supplies. This single monolithic chip

7

OUTPUT incorporates all the control and supervisory (protection)

functions required in switched mode power supplies,

2

8.2V

Vz

including an internal temperature compensated

reference source, internal zener reference, sawtooth

generator, pulse width modulator, output stage and

cycle by cycle current limit.

Part

Number

IP5561

IP5561C

J–Pack N–Pack

8 Pin

8 Pin

D–8

8 Pin

Order Information

Temp.

Range

-55 to +125°C

0 to +70°C

Note:

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

eg. IP5561J

IP5561CD–8

ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)

SUPPLY

Voltage Sourced

Current Sourced

18V

30mA

OUTPUT TRANSISTOR

Output Current

Collector Voltage

(Pin 7)

TJ

TSTG

Operating Junction Temperature

Storage Temperature Range

40mA

18V

See Ordering Information

–55 to +150°C

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

Prelim. 4/95

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