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34063A Datasheet(Fiches technique) 2 Page - List of Unclassifed Manufacturers

Numéro de pièce 34063A
Description  DC-TO-DC CONVERTER CONTROL CIRCUITS
Télécharger  2 Pages
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Fabricant  ETC [List of Unclassifed Manufacturers]
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34063A Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

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ORDERING INFORMATION
Device
Temperature
Range
Package
34063AD 0° to +70°C
SO-8
34063AP1
Plastic DIP
ELECTRICAL CHARACTERICISTICS
(VCC = 5.0 V, TA= 0 to +70
oC unless otherwise specified.)
Characteristics
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C)
fosc
24
33
42
kHz
Charge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Ichg
24
33
42
µA
Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Idischg
140
200
260
µA
Discharge to Charge Current Ratio (Pin7 to Vcc, TA=25°C)
Idischg/Ichg
5.2
6.2
7.5
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
Vlpk(sense) 250
300
350
mV
OUTPUT SWITCH (Note 3)
Saturation Voltage, Darlington Connection (ISW = 1.0 A,
Pins 1, 8 connected)
VCE(sat)
1.0
1.3
V
Saturation Voltage (ISW = 1.0 A, RPin 8 = 82
Ω to VCC.
Forced
β = 20)
VCE(sat)
0.45
0.7
V
DC Current Gain (ISW = 1.0 A, VCE
= 5.0 V, T
A = 25°C)
hFE
50
120
Collector Off-State Current (VCE = 40V)
IC(off)
0.01
100
µA
COMPARATOR
Threshold Voltage (TA = 25°C)
(TA = TLOW to THIGH)
Vth
1.225
1.21
1.25
1.275
1.29
V
Threshold Voltage (TA = 25°C) **
Vth
1.2375
1.25
1.2625 V
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V)
V REG line
1.4
5.0
mV
Input Bias Current (Vin=0V)
IIB
-40
-400
nA
TOTAL DEVICE
Supply Current (VCC = 5 0 V to 40 V, CT = 1 0 nF, Vpin7 =
VCC. VPin5 > Vth, Pin 2 = Gnd, Remaining pins open)
ICC
2.5
4.0
mA
NOTES:
1. Maximum package power dissipation limits must be observed.
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 configuration) at low switch currents (< 300 mA) and
high driver
currents (>30 mA), it may take up to 2.0
µs to come out of saturation This condition will shorten the off' time
at frequencies > 30 kHz,
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
β of output switch = IC, output/(Ic, driver -7.0 mA*) > 10
*The 100
Ω. resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts
**Possible version for shipment
Pin connection


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