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MC34063ADR2 View Datasheet(PDF) - ON Semiconductor

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MC34063ADR2 Datasheet PDF : 15 Pages
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MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A
ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, TA = Tlow to Thigh [Note 4], unless otherwise specified.)
Characteristics
Symbol
Min Typ Max Unit
OSCILLATOR
Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C)
Charge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C)
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
OUTPUT SWITCH (Note 5)
Saturation Voltage, Darlington Connection
( ISW = 1.0 A, Pins 1, 8 connected)
Saturation Voltage (Note 6)
(ISW = 1.0 A, RPin 8 = 82 W to VCC, Forced b ] 20)
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C)
Collector OffState Current (VCE = 40 V)
COMPARATOR
Threshold Voltage
TA = 25°C
TA = Tlow to Thigh
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V)
MC33063, MC34063
MC33063V, NCV33063
fosc
24
33
42
kHz
Ichg
24
35
42
mA
Idischg
140 220 260
mA
Idischg/Ichg
5.2
6.5
7.5
Vipk(sense)
250 300 350
mV
VCE(sat)
VCE(sat)
hFE
IC(off)
1.0
1.3
V
0.45 0.7
V
50
75
0.01 100
mA
Vth
Regline
V
1.225 1.25 1.275
1.21
1.29
mV
1.4
5.0
1.4
6.0
Input Bias Current (Vin = 0 V)
IIB
20 400 nA
TOTAL DEVICE
Supply Current (VCC = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC,
VPin 5 > Vth, Pin 2 = GND, remaining pins open)
ICC
4.0
mA
4. Tlow = 0°C for MC34063, SC34063; 40°C for MC33063, SC33063, MC33063V, NCV33063
Thigh = +70°C for MC34063, SC34063; + 85°C for MC33063, SC33063; +125°C for MC33063V, NCV33063
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
6. If the output switch is driven into hard saturation (nonDarlington configuration) at low switch currents (300 mA) and high driver currents
(30 mA), it may take up to 2.0 ms 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 cannot saturate. If a
nonDarlington configuration is used, the following output drive condition is recommended:
Forced b of output switch :
IC
IC output
driver – 7.0
mA
*
w
10
* The 100 W resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
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