参数资料
型号: TL1454CD
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: PLASTIC, SO-16
文件页数: 11/25页
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
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
TYPICAL CHARACTERISTICS
Figure 28
4
3
2
1
5
STANDBY SUPPLY CURRENT
vs
SUPPLY VOLTAGE
6
0
5
10
15
20
25
VCC – Supply Voltage – V
Standby
Supply
Current
mA
I CC(stby)
VCC = 6 V
RT = Open
CT = 1.5 V
COMP1, COMP2 = 1.25 V
No Load
TA = 25°C
Figure 29
4
3
2
1
– 50
0
50
Standby
Supply
Current
mA
5
6
100
I CC(stby)
VCC = 6 V
CT = 1.5 V
RT = Open
COMP1, COMP2 = 1.25 V
No Load
STANDBY SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
TA – Free-Air Temperature – °C
Figure 30
0.5
0
1
Reference
V
oltage
V
1.5
REFERENCE VOLTAGE
vs
SUPPLY VOLTAGE
V
ref
VCC – Supply Voltage – V
0
5
10
15
20
25
TA = 25°C
Figure 31
1.24
1.23
Reference
V
oltage
V
1.25
REFERENCE VOLTAGE
vs
SUPPLY VOLTAGE
1.26
V
ref
VCC – Supply Voltage – V
0
5
10
15
20
25
IO = 1 mA
TA = 25°C
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