The SN6501DBVT from TI is a push-pull transformer driver for isolated power supply, providing up to 1.5W at 5V or 3.3V input in SOT-23-5 for isolated DC-DC converter designs.
| 包装 | SOT-23-5 |
The SN6501DBVT from TI is a push-pull transformer driver for isolated power supply, providing up to 1.5W at 5V or 3.3V input in SOT-23-5 for isolated DC-DC converter designs.
The SN6501DBVT is a push-pull transformer driver from Texas Instruments in SOT-23-5, designed for isolated DC-DC power supplies providing up to 1.5W of isolated power. The device generates a 50% duty-cycle square wave on D1 and D2 (180 degrees out of phase) at approximately 160kHz, driving the center-tapped primary of an external transformer. The push-pull topology naturally cancels the DC bias in the transformer core, preventing saturation and allowing smaller core sizes. The secondary winding produces an AC voltage that is rectified by external Schottky diodes and filtered by capacitors, producing an isolated DC output. For a 3.3V input with a 1:1 transformer, the output is approximately 3.3V (minus diode drops); with a 1:1.5 transformer, approximately 5V. The device includes: (1) Internal oscillator (160kHz +/-20%); (2) Over-temperature shutdown at 165C; (3) Under-voltage lockout at 2.5V; (4) Current limit at 350mA per driver. The quiescent current is 3mA at no load. The isolation voltage depends on the transformer: typical transformers provide 1500-5000Vrms isolation. The -DBVT suffix specifies SOT-23-5, tape-and-reel. Applications include: isolated RS-485/RS-232 transceiver power, isolated ADC power, and medical device isolation barriers.
| 针脚 | 名称 | 类型 | 功能 |
|---|---|---|---|
| 1 | VCC | 电源 | Input supply (3.0-5.5V, powers internal oscillator and driver) |
| 2 | 接地 | 电源 | 地面 |
| 3 | D2 | 输出 | Driver output 2 (connects to transformer primary, 180deg phase from D1) |
| 4 | D1 | 输出 | Driver output 1 (connects to transformer primary, push-pull drive) |
| 5 | 北卡罗来纳州 | - | 无连接 |
| 制造商 | 部件编号 | 包装 | 说明 |
|---|---|---|---|
| 德州仪器 | SN6501DBVT | SOT-23-5 | Same device, TI brand |
| 德州仪器 | SN6505DBVR | SOT-23-5 | Higher power version (2W), internal LDO |
| 德州仪器 | SN6507DGKR | VSSOP-8 | Programmable frequency, higher power |
| 模拟器件公司 | LTC3573EMS8#PBF | MSOP-8 | Isolated DC-DC with integrated LDO, ADI |
| 马克西姆 | MAX253CPA+ | DIP-8 | 1W isolated RS-485 driver, Maxim brand |
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
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