- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄96680 > PJ3800CA 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | PJ3800CA |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | TSSOP-8 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 330K |
| 代理商： | PJ3800CA |
PJ3800
Low Voltage Switching Regulator Controller
4-8
2003/04.rev.A
1. Soft Start
At power on, the capacitor CPE connected to the SCP pin starts charging. The PWM comparator compares the soft start setting
voltage as a proportion of the voltage at the SCP pin with the saw tooth waveform. The comparison controls the ON duty of the
OUT pin, causing the soft start operation. On completion of soft start operation, the voltage at the SCP pin stays low, the soft
start setting voltage stays high, and the circuit enters the output short circuit detection wait state.
Soft start time (The time until the output ON duty reaches approximately 50%)
tS [s]
0.35 × CPE [μF]
2. Short Circuit Protection
If the switching regulator output suddenly drops due to load effect, the error amplifier output (FB pin) is fixed at VOM + and
capacitor CPE starts charging. When the voltage at the SCP pin reaches approximately 0.8V, the output pin is set low and the
SCP pin stays low.
Once the protection circuit operates, the circuit can be restored by resetting the power supply.
Short circuit detection time
tPE [s]
0.8 × CPE [μF]
DIAGRAM
HOW TO SET THE TIME CONSTANT FOR SOFT START AND SHORT CIRCUIT DETECTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PJ3800CS | 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| PKA2231CI | 3-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| PKA2231P | 3-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| PKA2232CI | 3-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| PKA2212P | 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PJ3800CS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low Voltage Switching Regulator Controller |
| PJ3842 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3842B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3842BCD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3842BCS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復。