参数资料
型号: TL1454ACDG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 1 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16
封装: GREEN, SOIC-16
文件页数: 7/25页
文件大小: 503K
代理商: TL1454ACDG4
TL1454A, TL1454AY
DUALCHANNEL PULSEWIDTHMODULATION (PWM)
CONTROL CIRCUIT
SLVS423 A MAY 2002 REVISED SEPTEMBER 2002
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 14
2
1.5
1
UVLO
Threshold
V
o
ltage
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
o
ltage
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
o
ltage
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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