MC34063AD datasheet(2/10 Pages) ARTSCHIP

Part #	MC34063AD

Description	SMPS Controller

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Manufacturer	ARTSCHIP [ARTSCHIP ELECTRONICS CO.,LMITED.]

Direct Link	http://www.artschip.com/

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MC34063A MC33063A

www.artschip.com

2

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Power Supply Voltage

Vcc

40

V dc

Comparator Input Voltage Range

VIR

-0.3 to +40

V dc

Switch Collector Voltage

VC(switch)

40

V dc

Switch Emitter Voltage (VPin 1=40V)

VE(switch)

40

V dc

Switch Collector to Emitter Voltage

VCE(switch)

40

V dc

Driver Collector Voltage

VC(driver)

40

V dc

Driver Collector current (Note 1)

IC(driver)

100

mA

Switch Current

I sw

1.5

A

Power Dissipation and Thermal Characteristics

Plastic Package, P,P1 Suffix

TA=25℃

Thermal Resistance

SOIC Package, D Suffix

TA=25℃

Thermal Resistance

PD

R ӨJA

PD

R ӨJA

1.25

100

625

160

W

℃

/w

w

℃

/w

Operating Junction Temperature

TJ

+150

℃

Operating Ambient Temperature Range

MC34063A

MC33063AV

MC33063A

TA

0 to +70

-40 to +125

-40 to +85

℃

Storage Temperature Range

T stg

-65 to +150

℃

NOTES: 1. Maximum package power dissipation limits must be observed.

2. ESD data available upon request.

ELECTRICAL CHARACTERISTICS

(VCC = 5.0V, TA=TIOW to Thigh [Note 3], unless otherwise specified.)

Characteristics

Symbol

Min

Typ

Max

Unit

OSCILLATOR

Frequency (VPin 5=0 V, CT =10nF, TA =25℃)

F OSC

24

33

42

kHz

Charge Current (VCC =5.0V to 40V, TA=25℃)

I chg

24

35

42

µA

Discharge Current (VCC =5.0V to 40V, TA =25℃)

I dischg

140

220

260

µA

Discharge to Charge Current Ratio (Pin 7 to VCC, TA=25℃)

I dischg / I chg

5.2

6.5

7.5

-

Current Limit Sense Voltage (I chg = I dischg, TA =25℃)

V ipk(sense)

250

300

350

mV

OUTPUT SWITCH

(Note 4)

Saturation Voltage, Darlington Connection (Note 5)

(ISW =1.0A, Pins 1,8 connected)

VCE(sat0

—

1.0

1.3

V

Saturation Voltage, Darlington Connection

(ISW = 1.0A, RPin 8 =82Ω to VCC, Forced ß≌20)

VCE(sat)

—

0.45

0.7

V

DC Current Gain (ISW =1.0A, VCE = 5.0V, TA=25℃)

h FE

50

75

—

Collector Off-State Current (VCE = 40V)

IC(off)

—

0.01

µA

NOTES:

3. Tlow =0℃ for MC34063A, -40℃ for MC33063A, AV

Thigh = +70℃ for MC34063A, +85℃ for MC33063A, +125℃ for MC33063V

4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

5. If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300mA) and high driver

currents(

≥30mA), it may take up to 2.0µs for it to come out of saturation. This condition will shorten the off time at

frequencies≥30kHz, and is magnified at high temperatures. This condition does not occur with a Darlington configuration,

since the output switch cannot saturate. If a non-Darlington configuration is used, the following output drive condition is

recommended:

Forced ß of output switch:

*The 100Ω resistor in the emitter of the driver device requires about 7.0mA before the output switch conducts.

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