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参数资料
| 型号： | FA5310BS |
| 厂商： | FUJI ELECTRIC CO LTD |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | SOP-8 |
| 文件页数： | 18/19页 |
| 文件大小： | 2198K |
| 代理商： | FA5310BS |
DIS
CO
NT
INU
ED
Se
pte
mb
er
200
2
32
FA531X series
The detection threshold is -0.17V for FA5314/15 with respect to
ground as shown in Figure 17.
The operation is similar to that of FA5310B/11B/16/17 except
the threshold is minus voltage compared to that which is plus
voltage for FA5310B/11B/16/17.
Figure 18 is a timing chart which illustrates current limiting
operations.
6. Undervoltage lockout circuit
The IC incorporates a circuit which prevents the IC from
malfunctioning when the supply voltage drops. When the
supply voltage is raised from 0V, the IC starts operation with
VCC=VCC ON.
If the supply voltage drops, the IC shuts its output down when
VCC=VCC OFF. When the undervoltage lockout circuit operates,
the CS pin goes low to reset the IC.
7. Output circuit
As shown in Figure 19, the IC's totem-pole output can directly
drive the MOSFET. The OUT pin can source and sink currents
of up to 1.5A or 1.0A.
If IC operation stops when the undervoltage lockout circuit
operates, the gate voltage of the MOSFET goes low and the
MOSFET is shut down.
Fig. 17 Overcurrent limiting circuit for FA5314/15
Fig. 18 Overcurrent timing chart for FA5314/15
Fig. 19 Output circuit
CS pin voltage (3.6V)
DT voltage
FB pin voltage
Oscillator output
OUT pin output
H
L
IS ( – ) pin voltage
Comparator C4
Reference
voltage (– 0.17V)
Bias voltage
OFF
Overcurrent limiting
Minus
detection
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相关代理商/技术参数 |
参数描述 |
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| FA5310P | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| FA5311 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| FA5311BP | 制造商:FUJI 制造商全称:Fuji Electric 功能描述:Bipolar IC For Switching Power Supply Control |
| FA5311BP(S) | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| FA5311BPS | 制造商:FUJI 制造商全称:Fuji Electric 功能描述:Bipolar IC For Switching Power Supply Control |
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