KK34063A
ELECTRICAL CHARACTERICISTICS
(V
CC
= 3.3 V, T
A
= -40 to +85
o
C unless otherwise specified.)
Symbol
OSCILLATOR
Frequency (V
Pin 5
= 0 V, C
T
= 1.0 nF, T
A
= 25°C)
fosc
Charge Current (V
CC
= 5.0 V to 40 V, T
A
= 25°C)
Ichg
Discharge Current (
V
CC
= 5.0 V to 40 V, T
A
= 25°C)
Idischg
Discharge to Charge Current Ratio (Pin7 to Vcc, T
A
=25°C)
Idischg/Ichg
Current Limit Sense Voltage (Ichg = Idischg, T
A
= 25°C)
Vlpk(sense)
OUTPUT SWITCH (Note 3)
Saturation Voltage, Darlington Connection (I
SW
= 1.0 A, Pins 1, 8
V
CE
(sat)
connected)
Characteristics
Min
24
24
140
5.2
250
—
—
50
—
1.225
1.21
1.2375
Typ
33
33
200
6.2
300
1.0
0.45
120
0.01
1.25
—
1.25
1.4
-40
2.5
Max
42
42
260
7.5
350
1.3
0.7
—
100
1.275
1.29
1.2625
5.0
-400
4.0
Unit
kHz
µA
µA
—
mV
V
V
—
µA
V
V
mV
nA
mA
V
CE
(sat)
Saturation Voltage (I
SW
= 1.0 A, R
Pin 8
= 82
Ω
to V
CC
.
Forced
β
= 20)
DC Current Gain (I
SW
= 1.0 A, V
CE =
5.0 V, T
A
= 25°C)
h
FE
Collector Off-State Current (V
CE
= 40V)
I
C
(off)
COMPARATOR
Threshold Voltage (T
A
= 25°C)
Vth
(T
A
= T
LOW
to T
HIGH
)
Threshold Voltage (T
A
= 25°C) **
Threshold Voltage Line Regulation (V
CC
= 3 0 V to 40 V)
Input Bias Current (Vin=0V)
Vth
Reg
line
I
IB
TOTAL DEVICE
Supply Current (V
CC
= 5 0 V to 40 V, C
T
= 1 0 nF, V
pin7
= V
CC
.
I
CC
V
Pin5
> Vth, Pin 2 = Gnd, Remaining pins open)
—
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 = I
C
, 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
3
KODENSHI [ KODENSHI KOREA CORP. ]
