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AV34063

1.5A,Step-Up/Down Inverting Switching Regulators

Avic Technology 

@vic

AV34063

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 )

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

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

FOSC

Ichg

Idischg

24 33 42 KHz

24 35 42 µA

140 220 260 µA

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 mV

OUTPUT SWITCH (NOTE 2)

Saturation Voltage, Darlington Connection (Note 3)

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

Saturation Voltage, Darlington Connection

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

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

Collector Off-State Current (VCE=40V)

VCE(sat)

VCE(sat)

HEF

IC(Off)

- 1.0 1.3 V

- 0.45 0.7 V

50 75

-

-

- 0.01 100 µA

COMPARATOR

Threshold Voltage

(TA =25 )

(TA = Tlow to Thigh)

Vth

1.238 1.25 1.262 V

1.225 - 1.275

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

Regline

-

1.4 5.0 mV

Input Bias Current (Vin=0V)

IIB

- -20 -400 nA

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 mA

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.

Copyright © Avic Electronics Corp.

3

Website: http://www.avictek.com

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