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參數(shù)資料
| 型號： | TC33063AEOATR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.35 A SWITCHING REGULATOR, 42 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 121K |
| 代理商： | TC33063AEOATR |
TC33063A
8
TC33063A -1 5/9/00
DC/DC Converter Control Circuits
TYPICAL CHARACTERISTICS
ton
VCC = 5.0V
Pin 7 = VCC
Pin 5 = GND
TA = 25°C
toff
Figure 9. Output Switch On-Off Time vs.
Oscillator Timing Capacitor
tON-OFF,OUTPUT
SWITCH
ON-OFF
TIME
(
sec)
0.01 0.02
0.05
0.1
0.2
0.5 1.0
2.0
5.0 10
1000
500
200
100
50
20
10
5.0
2.0
1.0
CT, OSCILLATOR TIMING CAPACITOR (nF)
Figure 10. Timing Capacitor Waveform
10
sec/DIV
200
mV/DIV
VCC = 5.0 V
Pin 7 = VCC
Pin 2 = GND
Pins 1, 5, 8 = Open
CT = 1.0nF
TA = 25°C
V
OSC
,OSCILLATOR
VOLTAGE
(V)
Figure 11. Emitter Follower Configuration Output
Saturation Voltage vs. Emitter Current
Figure 12. Common Emitter Configuration Output
Switch Saturation Voltage vs. Collector Current
Figure 13. Current Limit Sense Voltage
vs.Temperature
Figure 14. Standby Supply Current vs.
Supply Voltage
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
IE, EMITTER CURRENT (A)
V
CE(sat)
,SATURATION
VOLTAGE
(V)
VCC = 5.0V
Pins 1, 7, 8 = VCC
Pins 3, 5 = GND
TA = 25C
(See Note 4)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
IC, COLLECTOR CURRENT(A)
V
CE(sat)
,SATURATION
VOLTAGE
(V)
Darlington Connection
Forced
β = 20
–55
–25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (C)
V
IPK(sense)
,CURRENT
LIMIT
SENSE
VOLTAGE
(V)
VCC = 5.0V
ICHG = IDISCHG
0
5.0
10
15
20
25
30
35
40
VCC, SUPPLY VOLTAGE (V)
I CC
,SUPPLYCURRENT
(mA)
CT = 1.0nF
Pin 7 = VCC
Pin 2 = GND
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
1.1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
400
380
360
340
320
300
280
260
240
220
200
3.6
3.2
2.4
2.0
1.6
1.2
0.8
0.4
0
1.0
2.8
VCC = 5.0V
Pin 7 = VCC
Pins 2, 3, 5 = GND
TA = 25C
(See Note 4)
NOTE: 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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