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參數資料
| 型號： | UCC2813-2QDRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SOIC-8 |
| 文件頁數： | 13/14頁 |
| 文件大小： | 428K |
| 代理商： | UCC2813-2QDRQ1 |
UCC28130/1/2/3/4/5Q1
LOW POWER BICMOS CURRENT MODE PWM
SGLS245B MAY 2004 = REVISED APRIL 2006
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
Figure 1
Oscillator
The UCC2813-0/1/2/3/4/5 oscillator generates a sawtooth
waveform on RC. The rise time is set by the time constant of RT and
CT. The fall time is set by CT and an internal transistor
on-resistance of approximately 125. During the fall time, the output
is off and the maximum duty cycle is reduced below 50% or 100%
depending on the part number. Larger timing capacitors increase
the discharge time and reduce the maximum duty cycle and
frequency.
0.2 V
2.5 V
S
RQ
REF
RC
CT
RT
8
4
Figure 2
Error Amplifier
Gain/Phase Response
Figure 3
UCC2813-3/5 VREF
vs
VCC
ILOAD = 0.5 mA
Figure 4
UCC2813-0/1/2/4 Oscillator Frequency
vs
RT and CT
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| UCC2813-3 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low Power Economy BiCMOS Current Mode PWM |
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