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参数资料
| 型号： | BD9870FPS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 990 kHz SWITCHING FREQ-MAX, PSSO4 |
| 封装： | LEAD FREE, TO-252, 5 PIN |
| 文件页数： | 10/13页 |
| 文件大小： | 1032K |
| 代理商： | BD9870FPS |
6/12
Capacitor C3
This capacitor is utilized to stabilize the frequency characteristics, but is seldom used. However, if the phase margin is
insufficient and oscillation is likely, connecting this capacitor may improve frequency stability.
Resistor R1,R2
These resistors determine the output voltage:
VOUT＝1.0V×(1 + R1/R2)
Select resistors less than 10kΩ.
＜Recommended Components (Example)＞
Inductor
L1＝10μH
：C6-K3LA (MITSUMI)
Schottky
Diode
D1
：RB050LA-30（ROHM）… use when VCC is less than 30V
D2
：RB050LA-40（ROHM）… use when VCC is greater than 30V
Capacitor
C1＝10μF(25V)
：ceramic cap GRM31CB31E106KA75L(murata)
C2＝4.7μF(50V)
：ceramic cap GRM32EB31H475KA87L(murata)
C3＝OPEN
＜Recommended Components example 2＞…when the Duty ratio of output/input voltage is less than 10%
Inductor
L1＝10μH
：C6-K3LA (MITSUMI)
Schottky Diode
D1
：RB050LA-30（ROHM）… use when VCC is less than 30V
D2
：RB050LA-40（ROHM）… use when VCC is more than 30V
Capacitor
C1＝100μF(25V)
：Al electric capacitor UHD1E101MED(nichicon)
C2＝4.7μF(50V)
：ceramic cap GRM32EB31H475KA87L(murata)
C3＝OPEN
●Test Circuit
IINV
Icc
Vcc
OUT
GND
INV
STBY
Vcc
SW4
SW5
SW2
1
2
FIN
45
A
Vo
f
1kΩ
A
V
2kΩ
VINV
ISTB
VSTB
SW6
+
Io
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相关代理商/技术参数 |
参数描述 |
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| BD9870FPS_09 | 制造商:ROHM 制造商全称:Rohm 功能描述:Simple Step-down Switching Regulator with Built-in Power MOSFET |
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| BD9873CP-V5-E2 | 制造商:ROHM Semiconductor 功能描述: |
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