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參數(shù)資料
| 型號： | TL1464IPTRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, PQFP48 |
| 封裝： | GREEN, PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 345K |
| 代理商： | TL1464IPTRG4 |
TL1464I
QUAD PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS266 – FEBRUARY 2000
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1.4 V
0.7 V
0 V
“L”
0 V
Vref + 0.7 V
1.5 V
VCC
0 V
OSCILLATOR
WAVEFORM (see Note A)
DEAD-TIME
INPUT VOLTAGE
ERROR AMP. OUTPUT
PWM COMP. OUTPUT
OUTPUT PIN WAVEFORM
REGULATED OUTPUT
VOLTAGE (see Note B)
SCP PIN WAVEFORM
SCP COMP. OUTPUT
POWER SUPPLY
VOLTAGE
“H”
“L”
“H”
“L”
“H”
2.7 V
VA
DEAD-TIME 100%
tpe
Protection Enable Time, tpe = 477×103 Cpe (sec)
Figure 1. Timing Diagram (CH-1/CH-2)
0 V
Vref + 0.7 V
1.5 V
VCC
0 V
REGULATED OUTPUT
VOLTAGE (see Note B)
SCP PIN WAVEFORM
SCP COMP. OUTPUT
POWER SUPPLY
VOLTAGE
“L”
“H”
2.7 V
VA
tpe
Protection Enable Time, tpe = 477×103 Cpe (sec)
1.4 V
0.7 V
“L”
OSCILLATOR
WAVEFORM (see Note A)
ERROR AMP. OUTPUT
PWM COMP. OUTPUT
OUTPUT PIN WAVEFORM
“H”
“L”
“H”
DEAD-TIME 100%
Figure 2. Timing Diagram (CH-3/CH-4)
NOTES: A. Oscillator waveform of CH-1 and CH-2 is inverting output each other.
B. Va = input voltage of pin 29 (pin 24)
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