Datasheet IP33063N, IP33063J, IP35063J-BSS2, IP35063J-883B, IP34063J Datasheet (Semelab Plc)

IP35063
IP33063
IP34063

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

Prelim. 2/95

TOP VIEW

J Package – 8 Pin Ceramic DIP

N Package – 8 Pin Plastic DIP

D-8 Package – 8 Pin Plastic (150) SOIC

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

IP35063 ✔ -55 to +125°C
IP33063 ✔✔✔-40 to +85°C
IP34063 ✔✔✔0 to +70°C

FEATURES

• Operation from 2.5 to 40V input

• Low Standby Current

• Current Limiting

• Output switch current of 1.5A

• Output voltage adjustable from 1.25 to 40V

• Operating frequency from 100Hz to 100kHz

• Direct replacement for MC34063/MC34063A
series

Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage
Switch Collector to Emitter Voltage
Driver Collector Voltage
Switch Current
Power Dissipation @ T

amb

= 25°C Ceramic Packages

Plastic Packages
Derate above 25°C
Operating Junction Temperature Ceramic Packages

Plastic Packages
Operating Ambient Temperature Range See Table Above
Storage Temperature Range

+40V

–0.3V to +40V

40V
40V
40V
40V

1.5A

1.25W
1W

10mW/°C

150°C
125°C

See Table Above

–65 to 150°C

ABSOLUTE MAXIMUM RATINGS

1

2

3

4

8

7

6

5

V

CC

SWITCH

COLLECTOR

SWITCH

EMITTER

TIMING

CAPACITOR

GND

I

pk SENSE

DRIVER
COLLECTOR

CO MPARATOR
INVERTING
INPUT

DC–DC CONVERTER

CONTROL CIRCUIT

Order Information

Note:

To order, add the package identifier to the part
number.
eg. IP35063D–8

IP35063
IP33063
IP34063

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

Prelim. 2/95

Parameter Test Conditions Min. Typ. Max. Units

20 35 50

150 200 250

0.5

6.0

250 300 350

1 1.3

0.45 0.7

35 120

10

1.18 1.25 1.32

0.04 0.2
40 400

2.4 3.5

Charging Current
Discharge Current
Voltage Swing
Discharge to Charge Current Ratio
Current Limit Sense Voltage

Saturation Voltage, Darlington Connection *
Saturation Voltage *
DC Current Gain

Collector Off–State Current

Threshold Voltage *
Threshold Voltage Line Regulation *
Input Bias Current *

Supply Current *

VCC= 5 to 40V
VCC= 5 to 40V

I

pk(sense)

= V

CC

I

chg

= I

dischg

ISW= 1.0A
ISW= 1.0A
I

C(Driver)

= 50mA (Forced β = 20)
ISW= 1.0A , VCE= 5.0V
VCE= 40V

VCC= 3 to 40V
VIN= 0V

VCC= 5 to 40V CT= 0.001µF
I

pk(sense)

= V

CC

V

PIN 5

> V

th

Pin 2 = Gnd , Remaining Pins Open.

µA
µA

Vpp

—

mV

V
V

—

nA

V

mV/V

nA

mA

ELECTRICAL CHARACTERISTICS (Test Parameters unless otherwise stated : V

CC

= 5V , TJ= 25°C)

OUTPUT SWITCH

COMPARATOR

TOTAL DEVICE

OSCILLATOR

NOTES

* Applies over full operating temperature range (see order information).

1.25 V

REFERENCE

REGULATOR

COMPARATOR

OSCILLATOR

SRQ

8

7

6

5

1

2

3

4

Q1

Q2

170

Ω

Switch
Collector

Switch
Emitter

Timing
Capacitor

Gnd

Driver

Collector

I Sense

pk

V

CC

Comparator

Inverting

Input

DESCRIPTION

The IP34063 series of control circuits contains all the
functions required to implement DC–DC converters.
Included are internal voltage reference, comparator,
controlled duty cycle oscillator with current limit circuit,
driver, and high current output switch. This series was
specifically designed to be incorporated in Step-Down
(Buck) and Step-Up (Boost) applications with a minimum
number of external components.

IP35063
IP33063
IP34063

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

Prelim. 2/95

t

ON

t

OFF

(tON+ t

OFF)MAX

C

T

I

pk(switch)

R

SC

L

(MIN)

C

O

V

OUT

+ V

F

V

IN(MAX)

- V

SAT

- V

OUT

1

f

MIN

4 x 10-5t

ON

2 I

OUT(MAX)

0.33 / I

pk(switch)

V

IN(MAX)

- V

SAT

- V

OUT

t

ON(MAX)

I

pk(switch)

I

pk(switch)(tON

+ t

OFF

)

8 V

ripple(p–p)

V

OUT

+ VF- V

IN(MIN)

V

IN(MIN)

- V

SAT

1

f

MIN

4 x 10-5t

ON

tON+ t

OFF

2 I

OUT(MAX)

t

OFF

0.33 / I

pk(switch)

V

IN(MIN)

- V

SAT

t

ON(MAX)

I

pk(switch)

I

OUTtON

V

ripple

DESIGN FORMULA TABLE

Calculation Step–Down Step–Up

KEY

V

SAT

— Saturation voltage of the output switch.

V

F

— Forward voltage drop of the ringback rectifier.

The following power supply characteristics must be chosen:–

V

IN

— Nominal input voltage. If this voltage is not constant, then use V

IN(MAX)

for step–down and V

IN(Min)

for

step–up converter.

R2

V

OUT

— Desired output voltage, V

OUT

= 1.25 1 + .

R1

I

OUT

— Desired output current.

f

MIN

— Minimum desired output switching frequency at the selected values for VINand IO.

V

ripple(p–p)

— Desired peak–to–peak output ripple voltage. In practice, the calculated value will need to be increased

due to the capacitors equivalent series resistance and board layout. The ripple voltage should be kept to a
low value since it will directly affect the line and load regulation.

( )

IP35063
IP33063
IP34063

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

Prelim. 2/95

APPLICATIONS INFORMATION

1.25 V
REFERENCE
REGULATOR

COMPARATOR

OSCILLATOR

SRQ

8

7

6

5

1

2

3

4

Q1

Q2

170

Ω

1.25 V
REFERENCE
REGULATOR

COMPARATOR

OSCILLATOR

SRQ

8

7

6

5

1

2

3

4

Q1

Q2

170

Ω

I

pk

V

CC

R1

2.2K

R2

47K

28V
175mA

V

OUT

1500

µ

F

100µF

0.22

Ω

12V

V

IN

180

Ω

L 170µH

1N5819

R

SC

C

O

1500pF

C

T

C

T

R1

1.2K

R2

3.3K

470pF

C

T

100

µ

F

0.33

Ω

L

220

µ

H

1N5822

I

pk

Q1

Q2

V

CC

5.0V
500mA

V

OUT

25V

V

IN

470µF

C

O

R

SC

C

T

Step–Down Converter Step–Up Converter

1.25 V
REFERENCE
REGULATOR

COMPARATOR

OSCILLATOR

SRQ

8

7

6

5

1

2

3

4

Q1

Q2

170

Ω

1.25 V
REFERENCE
REGULATOR

COMPARATOR

OSCILLATOR

SRQ

8

7

6

5

1

2

3

4

Q1

Q2

170

Ω

V

IN

R

SC

V

OUT

V

IN

R

SC

V

OUT

Step–Down, External NPN Switch Step–Up, External NPN Switch

1.25 V
REFERENCE
REGULAT OR

COMPARATOR

OSCILLA TO R

S
R

Q

Q1

Q2

170

Ω

8

7

6

5

1

2

3

4

1.25 V
REFERENCE
REGULATO R

COMPARATOR

OSCILLATOR

S
R

Q

Q1

Q2

170

Ω

8

7

6

5

1

2

3

4

V

IN

R

SC

V

OUT

V

IN

R

SC

V

OUT

R – 0 F O R
CONSTA NT V

IN

Step–Down, External PNP Saturated Switch Step–Up, External NPN Saturated Switch

External Current Boost Connections for IC> 1.5A

IP35063
IP33063
IP34063

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

Prelim. 2/95

TYPICAL PERFORMANCE CHARACTERISTICS

0.50.2 5250100201100.1

50

100

20

5

10

1

2

500

1000

200

OSCILLATOR TIMING C APACITOR (nF)C

T

OUTP UT SWITCH ON–OFF TIME (

µ

s)

V = 5V

CC

pk(sense)

I = V

CC

Pin 5 = Gnd

t

on

t

off

Output Switch On–Off Time

vs Oscillator Timing Capacitor

Standby Supply Current

vs Supply Voltage

SUPPLY CURRENT (mA)
I

CC

40

0

0

3.2

2.4

1.6

0.8

5

10 25

30

35

15

20

SUPPLY VOLTAGE (V)V

CC

Pin 2 = Gnd

pk(sense)

I = V

CC

C = 0.001µF

T

1.2

1.3

1.5

1.4

1.6

1.1

1.0
0

0.2 0.4 0.6 0.8 1.0 1.2 1.4

SATURATION VOLTAGE (V)V

CE(sat)

EMITTER CURRENT (A)

I

E

V = 5V

CC

Pin 3,5 = Gnd

Pin 1,7,8 = V

CC

Emitter–Follower Configuration

Output Switch Saturation Voltage

vs Emitter Current

Common–Emitter Configuration

Output Switch Saturation Voltage

vs Collector Current

SATURATION VOLTAGE (V)V

CE(sat)

COLLECTOR CURRENT (A)

I

C

0.4

0.6

1.0

0.8

1.2

0.2

0

0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

V = 5 V

CC

Pin 2,3,5 = Gnd

Pin 7 = V

CC

DARLINGTON CONNECTION

FORCED β = 20