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參數資料
| 型號： | TL1454CD |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, SO-16 |
| 文件頁數： | 7/25頁 |
| 文件大小： | 412K |
| 代理商： | TL1454CD |
TL1454, TL1454Y
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS086B – APRIL 1995 – REVISED NOVEMBER 1997
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
TYPICAL CHARACTERISTICS
Figure 14
2
1.5
1
–
UVLO
Threshold
V
oltage
–
V
2.5
3
UVLO THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
3.5
– 25
0
25
50
75
100
VIT(H)
VIL(L)
V
IT(H)
V
IT(L)
TA – Free-Air Temperature – °C
–50
Figure 15
80
60
20
0
0.5
1
Duty
Cycle
–
%
100
DUTY CYCLE
vs
DTC INPUT VOLTAGE
VCC = 6 V
CT = 120 pF
RT = 10 k
TA = 25°C
VI(DTC) – DTC Input Voltage – V
1.5
120
40
0.25
0.75
1.25
0.5
0
040
80
–
Error-Amplifier
Maximum
Output
V
oltage
–
V
1
ERROR-AMPLIFIER MAXIMUM OUTPUT VOLTAGE
vs
SOURCE CURRENT
1.5
120
V
OM
+
Source Current –
A
VCC = 6 V
VID = 0.1 V
TA = 25°C
2
2.5
–
Error-Amplifier
Minimum
Output
V
oltage
–
V
ERROR-AMPLIFIER MINIMUM OUTPUT VOLTAGE
vs
SINK CURRENT
0
0.5
1
1.5
V
OM
–
VCC = 6 V
VID = 0.1 V
Sink Current – mA
0.5
0
1
1.5
2
2.5
Figure 16
Figure 17
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