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MC34063AM Datasheet (PDF) 3 Page - ON Semiconductor

Part number MC34063AM
Description  1.5A SWITCHING REGULATOR, 100kHz SWITCHING FREQ-MAX, PDSO8, EIAJ, PLASTIC, SO-8
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Manufacturer  ON Semiconductor
Direct Link  http://www.onsemi.com/PowerSol...
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MC34063AM Datasheet (HTML) 3 Page - ON Semiconductor

 
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MC34063A, MC33063A
ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, TA = Tlow to Thigh [Note 3.], 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 4.)
Saturation Voltage, Darlington Connection
( ISW = 1.0 A, Pins 1, 8 connected)
Saturation Voltage (Note 5.)
(ISW = 1.0 A, RPin 8 = 82 Ω to VCC, Forced β ] 20)
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C)
Collector Off–State 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)
MC33063A, MC34063A
MC33363AV
fosc
24
33
42
kHz
Ichg
24
35
42
µA
Idischg
140
220
260
µA
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
µA
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
3. Tlow = 0°C for MC34063A, –40°C for MC33063A, AV
Thigh = +70°C for MC34063A, +85°C for MC33063A, +125°C for MC33063AV
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
5. 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 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
non–Darlington 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 Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
http://onsemi.com
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