SMD Type
MC34063
Electrical Characteristics Ta = 25
Parameter
Frequency
Charge Current
Discharge Current
Discharge to Charge Current Ratio
Current Limit Sense Voltage
Saturation Voltage, Darlington Connection
Saturation Voltage (Forced â
DC Current Gain
Collector Off-State Current
Threshold Voltage
T
A
= 25
T
A
=0
to 70
R
egline
I
IB
I
CC
V
CC
= 3.0 V to 40 V
Vin = 0 V
V
th
20)
Symbol
f
osc
I
chg
I
dischg
Testconditons
Integrate Circuit
Min
24
24
140
5.2
250
Typ
33
35
220
6.5
300
1.0
0.45
Max
42
42
260
7.5
350
1.3
0.7
Unit
kHz
A
A
V
Pin 5
= 0 V, C
T
= 1.0 nF, T
A
= 25
V
CC
= 5.0 V to 40 V, T
A
= 25
V
CC
= 5.0 V to 40 V, T
A
= 25
I
dischg/
I
chg
Pin 7 to V
CC
, T
A
= 25
V
ipk(sense)
V
CE(sat)
V
CE(sat)
h
FE
I
C(off)
Ichg = Idischg, T
A
= 25
I
SW
=0.8 A, P
ins 1
, 8 connected
I
SW
=0.8A, R
Pin 8
= 82
to V
CC
,
mV
V
V
I
SW
=0.8 A, V
CE
= 5.0 V, T
A
= 25
V
CE
= 40 V
50
75
0.01
100
A
1.225
1.21
1.25
1.275
1.29
V
Threshold Voltage Line Regulation
Input Bias Current
Supply Current
V
Pin 5
> V
th
, Pin 2 = GND, remaining pins open
1.4
-20
5.0
-400
4.0
mV
nA
mA
V
CC
= 5.0 V to 40 V, C
T
= 1.0 nF,
Pin 7 = V
CC
,
2
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