AV34063 datasheet(3/8 Pages) AVICTEK

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AV34063

Website: http://www.avictek.com

ELECTRICAL CHARACTETRISTICS

(VCC=5.0V,TA=Tlow to Thigh [Note1],unless otherwise specified.)

Characteristics

Symbol

Min

Typ

Max

Unit

OSCILLATOR

Frequency(Vpin5=0V, CT =1.0nF, TA =25 )

FOSC

KHz

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

Ichg

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

Idischg

140

220

260

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

Idischg/ Ichg

5.2

6.5

7.5

Current Limit Sense Voltage (Ichg= Idischg, TA =25 )

Vipk(sence)

250

300

350

OUTPUT SWITCH (NOTE 2)

Saturation Voltage, Darlington Connection (Note 3)

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

VCE(sat)

1.0

1.3

Saturation Voltage, Darlington Connection

(ISW =1.0A, Rpin8 =82Ω to VCC, Forced β≈20)

VCE(sat)

0.45

0.7

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

HEF

Collector Off-State Current (

VCE=40V)

IC(Off)

0.01

100

COMPARATOR

Threshold Voltage

(TA =25 )

(TA = Tlow to Thigh)

Vth

1.238

1.225

1.25

1.262

1.275

Threshold Voltage Line Regulation (VCC=3.0V to 40V)

Regline

1.4

5.0

Input Bias Current (Vin=0V)

IIB

-20

-400

TOTAL DEVICE

Supply Current ((VCC=5.0V to 40V, CT =1.0nF, (Pin 7 to

VCC, (Pin 5> Vth, (Pin 2=Gnd, remaining pins open)

ICC

4.0

Notes: 1. Tlow =0

Thigh =+70

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

to ambient temperature as possible.

3. If the output switch is driven into hard saturation (non-Darlington) at low switch current

(≤300mA) and high driver currents (≥30mA),it may take up to 2.0 µs for it to come out of

saturation. This condition will shorten the off time at frequencies ≥30KHz, and is magnified at

high temperature. 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 β of output switch : ( IC output/( IC driver - 7.0mA) ≥10 )

*The 100Ω resister in the emitter of the driver device requires about 7.0mA before the output

switch conducts.

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