Semelab Plc IP5561J-883B, IP5561J, IP5561CJ, IP5561CD Datasheet

LAB

SEME

IP5661C
IP5561C

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

Prelim. 4/95

SWITCHED–MODE

POWER SUPPLY

CONTROL CIRCUIT

FEATURES

• STABILISED POWER SUPPLY

• TEMPERATURE COMPENSATED REFERENCE
SOURCE

• SAWTOOTH GENERATOR

• PULSE WIDTH MODULATOR

• CURRENT LIMITING

• 8 PIN DIP

SUPPLY

Voltage Sourced
Current Sourced

OUTPUT TRANSISTOR

Output Current
Collector Voltage (Pin 7)

T

J

Operating Junction Temperature

T

STG

Storage Temperature Range

18V

30mA

40mA

18V

See Ordering Information

–55 to +150°C

ABSOLUTE MAXIMUM RATINGS (T

case

= 25°C unless otherwise stated)

TOP VIEW

J Package – 8 Pin Ceramic DIP
N Package – 8 Pin Plastic DIP
D Package – 8 Pin Plastic (150) SOIC

1

2

3

4

8

7

6

5

OUTPUT

FEEDBACK

GAIN

GND

CURRENT
SENSE

V

Z

V

CC

RT/C

T

Part J–Pack N–Pack D–8 Temp.
Number 8 Pin 8 Pin 8 Pin Range

IP5561 ✔ -55 to +125°C
IP5561C ✔✔✔0 to +70°C

Order Information

Note:

To order, add the package identifier to the part number.
eg. IP5561J

IP5561CD–8

GAIN

5

SAWTOOTH

GENERATOR

LATCH

S
R

0.5V

CURRENT

SENSE

6

STABILISED

SUPPLY

18

GND

2

4

3

CC

V

z

V

FEEDBACK

ERROR

AMP

PWM

TCT

R

REFERENCE

VOLTAGE

CC

V

OUTPUT

7

8.2V

BLOCK DIAGRAM

DESCRIPTION

The IP5561 is a control circuit for use in switched
mode power supplies. This single monolithic chip
incorporates all the control and supervisor y (protection)
functions required in switched mode power supplies,
including an internal temperature compensated
reference source, internal zener reference, sawtooth
generator, pulse width modulator, output stage and
cycle by cycle current limit.

Internal Reference Voltage (V

REF

)

Temperature Coefficient of V

REF

Internal Reference (VZ)
Temperature Coefficient of V

Z

Frequency Range
Initial Accuracy Oscillator
Duty Cycle Range

I

IN

Single Pulse Inhibit Delay
Current Limit Trip Level

Output Voltage Swing (V

OH

)

Output Voltage Swing (V

OL

)
Open Loop Gain
Feedback Resistor
Small Signal Bandwidth

V

CE(sat)

Output Current

Supply Current (I

CC

)

Supply Voltage (V

CC

)

Pin 1 Threshold

T

J

= Over Temp. Range

I

L

= -7mA

T

J

= Over Temp. Range

f

O

= 20kHz

V

pin6

= 250mV

T

J

= Over Temp. Range

Inhibit Delay Time I

OUT

= 20mA

for 20% overdrive I

OUT

= 40mA

IC= 20mA TJ= Over Temp. Range
T

J

= Over Temp. Range

I

Z

= 0, Voltage Fed

T

J

= Over Temp. Range

I

CC

= 10mA, Voltage Fed

I

CC

= 30mA, Voltage Fed

3.69 3.75 3.84

3.65 3.88
±100

7.8 8.2 8.8
±200

50 100k

12

0–90 0–98

–2 –10

-20

0.88 1.10

0.7 0.8

0.40 0.50 0.60

6.2

0.7

60

10k

3

0.4

20

10

13
20 21 22
20 30

8 9 10.5

LAB

SEME

IP5661C
IP5561C

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

Prelim. 4/95

V

ppm/°C

V

ppm/°C

Hz

%

µA

µs

V

V

dB

Ω

MHz

V

mA

mA

V

V

3.57 3.75 3.96

3.55 3.98
±100

7.8 8.2 8.8
±200

50 100k

12

0–90 0–98

–2 –10

-20

0.88 1.10

0.7 0.8

0.40 0.50 0.60

6.2

0.7

60

10k

3

0.4

20

10

13
19 21 24
20 30

8 9 10.5

IP5561 IP5561C

Parameter Test Conditions Min. Typ. Max. Min. Typ. Max. Units

ELECTRICAL CHARACTERISTICS (T

J

= 25°C unless otherwise stated)

CURRENT LIMITING

ERROR AMPLIFIER

REFERENCE SECTIONS

OSCILLATOR SECTION

OUTPUT STAGE

SUPPLY VOLTAGE/CURRENT

NOTES

1) Test Conditions: VCC= 12V , TJ= 25°C unless otherwise stated

2) Tests marked TJ= Over Temp. Range apply over the full temperature range
ie. TJ= -55 to +125°C for IP5561

TJ= 0 to +70°C for IP5561C

LOW SUPPLY PROTECTION