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| 型號： | TL1451AQPWRG4Q1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.021 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 22/23頁 |
| 文件大小： | 379K |
| 代理商： | TL1451AQPWRG4Q1 |
TL1451A-Q1
DUAL PULSEWIDTHMODULATION CONTROL CIRCUITS
SGLS304A JUNE 2005 REVISED JUNE 2008
8
www.ti.com
TYPICAL CHARACTERISTICS
100 k
10 k
1 k
1 M
1 k
4 k
10 k
40 k
100 k
400 k
1 M
TRIANGLE OSCILLATOR FREQUENCY
vs
TIMING RESISTANCE
CT = 150 pF
CT = 1500 pF
CT = 15000 pF
VCC = 5 V
TA = 25°C
RT Timing Resistance
0
1
2
3
25
0
25
50
afosc
Oscillator
Frequency
V
ariation
%
1
2
OSCILLATOR FREQUENCY VARIATION
vs
FREE-AIR TEMPERATURE
3
75
100
VCC = 3.6 V
RT = 10 k
CT = 330 pF
fosc = 200 kHz
TA Free-Air Temperature °C
osc
f
fosc
T
riangle
Oscillator
Frequency
Hz
osc
f
Figure 3
Figure 4
2.2
2
1.6
1.4
0.8
2.6
1.8
T
riangle
W
aveform
Swing
V
oltage
V
2.4
TRIANGLE WAVEFORM SWING VOLTAGE
vs
TIMING CAPACITANCE
1.2
1
VCC = 5 V
RT = 5.1 k
TA = 25°C
CT Timing Capacitance pF
101
102
103
104
105
T
riangle
W
aveform
Period
uS
TRIANGLE WAVEFORM PERIOD
vs
TIMING CAPACITANCE
VCC = 5 V
RT = 5.1 k
TA = 25°C
s
102
101
100
101
102
103
104
105
CT Timing Capacitance pF
Figure 5
Figure 6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TL1451AQPWRQ1 | 功能描述:DC/DC 開關(guān)控制器 Dual PWM Control Circuit RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TL1451C | 制造商:Panasonic Industrial Company 功能描述:IC |
| TL1451CDB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TL1451CDBR | 功能描述:DC/DC 開關(guān)控制器 Dual PWM Control Circuit RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TL1451CDBRG4 | 功能描述:DC/DC 開關(guān)控制器 Dual PWM Control Circuit RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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