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B34063A Datasheet(Fiches technique) 2 Page - List of Unclassifed Manufacturers

Numéro de pièce B34063A
Description  1.5Amp DC-to-DC Converter Control Circuit
Télécharger  9 Pages
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Fabricant  ETC [List of Unclassifed Manufacturers]
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Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B34063A
Absolute Maximum Rating
Parameter
Symbol
Value
Unit
Supply Voltage
VCC
40
V
Comparator Input Voltage Range
VI(COMP)
-0.3
∼ + 40
V
Switch Collector Voltage
VC(SW)
40
V
Switch Emitter Voltage
VE(SW)
40
V
Switch Collector to Emitter
Voltage
VCE(SW)
40
V
Driver Collector Voltage
VC(DR)
40
V
Switch Current
ISW
1.5
I
Electrical Characteristics
(VCC = 5.0V, TA = TLOW to THIGH (Note 3), unless otherwise specified)
Parameter
Symbol
Conditions
MIN
TYP
MAX
UNIT
OSCILATOR
Charging Current
ICHG
VVV=5 to 40V, TA = 25 °C
24
35
42
µA
Discharging Current
IDISHG
VCC = 5 to 40V, TA = 25 °C
140
220
260
µA
Frequesncy
fOSC
TA = 25 °C
24
33
42
kHz
Discharge in To Charge
Current Ratio
K
V7 = VCC
TA = 25 °C
5.2
6.5
7.5
-
Current Limit Sense Voltage
VSENSE(C.L)
ICHG = IDISCHG, TA = 25 °C
250
300
350
mV
OUTPUT SWITCH (Note 4)
Saturation Voltage
Darlington Connection
VCE(SAT)
1
ISW = 1.0A, Pins 1, 8 connected
VC(drive) = VC(SW)
-
1.0
1.3
V
Saturation Voltage (Note 5)
VCE(SAT)
2
ISW = 1.0A, VC(drive) = 50mA
-
0.45
0.7
V
DC Current Gain
GI(DC)
ISW = 1.0A, VCE = 5.0V, TA = 25 °C
50
75
-
-
Collector off Sate Current
IC(OFF)
VCE = 40V
-
40
100
µA
COMPARATOR
Threshold Voltage
VTH
TA = 25 °C
TA= TLOW to Thigh
1.225
1.21
1.25
1.275
1.29
V
Threshold Voltage Line Reg.
B34063A, B34063AI
B34063AE
∆VTH
VCC = 3V to 40V
-
-
1.4
1.4
5.0
6.0
mV
Input Bias Current
IBIAS
VI = 0V
-20
-400
nA
TOTAL DEVICE
Supply Current
ICC
VCC = 5V to 40V, CT = 0.001µF,
Pin7=VCC , V5 >VTH pin2=Gnd,
Remaining pins open
-
-
4.0
mA
Note3: Tlow = 0 °C for B34063A, - 40 °C for B34063AI, AE, Thigh = +70°C for the B34063A, Thigh = +85°C for the B34063AI, +125°C for the
B34063AE
Note4: Low Duty cycle pulse techniques are used during test to maintain junction temp. as close to ambient temp. as possible.
Note5: If the output switch is driven into hard saturation (non-Darlington configuration) 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 ≥ 30 kHz. And is
magnified at high temperatures. This condition does not occur with a Darlington configuration. Since the output switch can not saturate. If a non-
Darlington configuration is used the following output drive condition is recommended:
Forces
β of output switch : Ic output/Ic driver – 7.0mA ≥10
The 100
Ω resistor is the emitter of the driver device requires about 7.0 mA before the output switch conducts




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