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參數資料
| 型號： | MC33063AVDR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | DC-to-DC Converter Control Circuits |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 3/16頁 |
| 文件大小： | 149K |
| 代理商： | MC33063AVDR2 |
MC34063A, MC33063A
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(V
CC
= 5.0 V, T
A
= T
low
to T
high
[Note 3.], unless otherwise specified.)
Characteristics
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (V
Pin 5
= 0 V, C
T
= 1.0 nF, T
A
= 25
°
C)
f
osc
24
33
42
kHz
Charge Current (V
CC
= 5.0 V to 40 V, T
A
= 25
°
C)
I
chg
24
35
42
μ
A
Discharge Current (V
CC
= 5.0 V to 40 V, T
A
= 25
°
C)
I
dischg
140
220
260
μ
A
Discharge to Charge Current Ratio (Pin 7 to V
CC
, T
A
= 25
°
C)
I
dischg
/I
chg
5.2
6.5
7.5
–
Current Limit Sense Voltage (I
chg
= I
dischg
, T
A
= 25
°
C)
V
ipk(sense)
250
300
350
mV
OUTPUT SWITCH
(Note 4.)
Saturation Voltage, Darlington Connection
(I
SW
= 1.0 A, Pins 1, 8 connected)
V
CE(sat)
–
1.0
1.3
V
Saturation Voltage (Note 5.)
(I
SW
= 1.0 A, R
Pin 8
= 82
to V
CC
, Forced
β
20)
V
CE(sat)
–
0.45
0.7
V
DC Current Gain (I
SW
= 1.0 A, V
CE
= 5.0 V, T
A
= 25
°
C)
h
FE
50
75
–
–
Collector Off–State Current (V
CE
= 40 V)
I
C(off)
–
0.01
100
μ
A
COMPARATOR
Threshold Voltage
T
A
= 25
°
C
T
A
= T
low
to T
high
V
th
1.225
1.21
1.25
–
1.275
1.29
V
Threshold Voltage Line Regulation (V
CC
= 3.0 V to 40 V)
MC33063A, MC34063A
MC33363AV
Reg
line
–
–
1.4
1.4
5.0
6.0
mV
Input Bias Current (V
in
= 0 V)
I
IB
–
–20
–400
nA
TOTAL DEVICE
Supply Current (V
CC
= 5.0 V to 40 V, C
T
= 1.0 nF, Pin 7 = V
CC
,
V
Pin 5
> V
th
, Pin 2 = Gnd, remaining pins open)
3. T
low
= 0
°
C for MC34063A, –40
°
C for MC33063A, AV T
high
= +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
μ
s 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:
ICoutput
ICdriver – 7.0 mA *
I
CC
–
–
4.0
mA
Forced
of output switch :
10
* The 100
resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
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