參數(shù)資料
型號(hào)： MC33063ADR2G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
中文描述： 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8
封裝： LEAD FREE, SOIC-8
文件頁(yè)數(shù)： 3/13頁(yè)
文件大小： 168K
代理商： MC33063ADR2G
MC34063A, MC33063A, NCV33063A
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(V
CC
= 5.0 V, T
A
= T
low
to T
high
[Note 4], 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
A
Discharge Current (V
CC
= 5.0 V to 40 V, T
A
= 25
°
C)
I
dischg
140
220
260
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 5)
Saturation Voltage, Darlington Connection
(I
SW
= 1.0 A, Pins 1, 8 connected)
V
CE(sat)
1.0
1.3
V
Saturation Voltage (Note 6)
(I
SW
= 1.0 A, R
Pin 8
= 82 to V
CC
, Forced
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 OffState Current (V
CE
= 40 V)
I
C(off)
0.01
100
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
MC33063AV, NCV33063A
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)
4. T
low
= 0
°
C for MC34063A, 40
°
C for MC33063A, AV, NCV33063A
T
high
= +70
°
C for MC34063A, +85
°
C for MC33063A, +125
°
C for MC33063AV, NCV33063A
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 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
nonDarlington configuration is used, the following output drive condition is recommended:
ICoutput
ICdriver – 7.0 mA *
* The 100 resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
I
CC
4.0
mA
Forced
of output switch :
10
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