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SN6505是一款低噪声,低EMI推挽式变压器驱动器,专门针对小外形尺寸的隔离电源而设计。该器件通过2.25V至
5V的直流电源输入来驱动薄型,中间抽头的变压器。该器件可通过控制输出开关电压转换率和扩频时钟(SSC)实现超低噪声和EMI.SN6505包含一个振荡器,之后是一个栅极驱动器电路,此电路提供互补输出信号以驱动接地参考N沟道电源开关。该器件包含两个1A电源MOSFET开关,确保在重载载条件下正常启动。开关时钟也可由外部提供,这样可确保准确消除开关谐波或者与多个变压器驱动器搭配使用。内部保护特性包括1.7A限流,欠压锁定,热关断和先断后合电路.SN6505具有软启动特性,可防止大负载电容在上电SN6505采用小型6引脚SOT23 /DBV封装。该器件的额定运行温度范围为-55°C至125°C。
Vin (Min) (V) |
Vin (Max) (V) |
Vout (Min) (V) |
Vout (Max) (V) |
Iout (A) |
Soft Start |
Features |
Switching Frequency (Min) (kHz) |
Switching Frequency (Max) (kHz) |
Rating |
Operating Temperature Range (C) |
Package Group |
Package Size: mm2:W x L (PKG) |
Iout (Max) (A) |
Shutdown Current (Typ) (uA) |
Pin/Package |
Switch Current Limit (Typ) (A) |
Type |
Undervoltage Lockout |
SN6505A | SN6501 | SN6505B |
---|---|---|
2.25 | 3 | 2.25 |
5.5 | 5.5 | 5.5 |
0 | 0 | 0 |
16 | 11 | 16 |
1 | 0.25 | 1 |
Yes | No | Yes |
Enable Power Good Short-circuit protection Spread spectrum clocking Thermal shutdown Slew-rate control | N/A | Enable Power Good Short-circuit protection Spread spectrum clocking Thermal shutdown Slew-rate control |
100 | 410 | 100 |
600 | 620 | 1600 |
Catalog | Catalog | Catalog |
-55 to 125 | -40 to 125 | -55 to 125 |
SOT-23 | SOT-23 | SOT-23 |
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) | 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23) |
1.5 | 0.5 | 1.5 |
1 | N/A | 1 |
6SOT-23 | 5SOT-23 | 6SOT-23 |
2 | 0.5 | 2 |
Transformer Driver | Converter (Integrated Switch) | Transformer Driver |
Vin<1.7 | N/A | Vin<1.7V |