Документация
Описание
Микросхема BD9897FS-E2 от Rohm — это ШИМ-контроллер для импульсных источников питания. Работает при напряжении от 7,5 до 30 В, рассеивает до 950 мВт и выпускается в корпусе SSOP-A32 для поверхностного монтажа. Применяется в промышленной автоматике и блоках питания.
Технические характеристики
| Корпус | SSOP-A32 |
| Тип монтажа | SMD |
| Max duty max | 49.5% |
| Max duty min | 46.0% |
| Max duty typ | 48.0% |
| Off time max | 400ns |
| Off time min | 100ns |
| Off time typ | 200ns |
| Кол-во выводов | 32 |
| Снижение мощности | 7.6mW/°C above 25°C |
| Рассеиваемая мощность | 950mW |
| Размеры упаковки | See SSOP-A32 drawing |
| Макс. напр. пит. | 30V |
| Мин. напр. пит. | 7.5V |
| Sw voltage abs max | 36V |
| Bst voltage abs max | 40V |
| Макс. ток дежурного режима | 30μA |
| Standby current typ | 13μA |
| Раб. ток макс. | 13mA |
| Operating current typ | 7.2mA |
| Reg output voltage max | 5.92V |
| Reg output voltage min | 5.68V |
| Reg output voltage typ | 5.80V |
| Reg source current min | 20mA |
| Soft start current max | 1.6μA |
| Soft start current min | 0.6μA |
| Soft start current typ | 1.1μA |
| Supply voltage abs max | 36V |
| Uvlo hysteresis vcc max | 0.43V |
| Uvlo hysteresis vcc min | 0.26V |
| Uvlo hysteresis vcc typ | 0.35V |
| Uvlo hysteresis uvlo max | 0.122V |
| Uvlo hysteresis uvlo min | 0.074V |
| Uvlo hysteresis uvlo typ | 0.098V |
| Vs threshold voltage max | 1.280V |
| Vs threshold voltage min | 1.220V |
| Vs threshold voltage typ | 1.250V |
| Диап. темп. хр. | -55 to +150°C |
| Drive output frequency max | 61.5kHz |
| Drive output frequency min | 58.5kHz |
| Drive output frequency typ | 60kHz |
| Is threshold voltage 1 max | 1.275V |
| Is threshold voltage 1 min | 1.225V |
| Is threshold voltage 1 typ | 1.250V |
| Bst sw voltage diff abs max | 7V |
| Диап. раб. темп. | -40 to +85°C |
| Ct oscillation frequency max | 180kHz |
| Ct oscillation frequency min | 60kHz |
| Макс. температура перехода | 150°C |
| Vref input voltage range max | 1.6V |
| Vref input voltage range min | 0.6V |
| Bct oscillation frequency max | 1kHz |
| Bct oscillation frequency min | 0.05kHz |
| Uvlo operating voltage vcc max | 6.3V |
| Uvlo operating voltage vcc min | 5.7V |
| Uvlo operating voltage vcc typ | 6.0V |
| Timer latch setting current max | 0.70μA |
| Timer latch setting current min | 0.40μA |
| Timer latch setting current typ | 0.55μA |
| Timer latch setting voltage max | 2.06V |
| Timer latch setting voltage min | 1.94V |
| Timer latch setting voltage typ | 2.0V |
| Uvlo operating voltage uvlo max | 2.321V |
| Uvlo operating voltage uvlo min | 2.179V |
| Uvlo operating voltage uvlo typ | 2.25V |
| Bst sw voltage diff operating max | 6.5V |
| Bst sw voltage diff operating min | 4.0V |
| Comp1 over voltage detect voltage max | 2.510V |
| Comp1 over voltage detect voltage min | 2.460V |
| Comp1 over voltage detect voltage typ | 2.485V |
| Comp2 over voltage detect voltage max | 2.510V |
| Comp2 over voltage detect voltage min | 2.460V |
| Comp2 over voltage detect voltage typ | 2.485V |
| Comp2 under voltage detect voltage 1 max | 1.275V |
| Comp2 under voltage detect voltage 1 min | 1.225V |
| Comp2 under voltage detect voltage 1 typ | 1.25V |
| Comp2 under voltage detect voltage 2 max | 0.644V |
| Comp2 under voltage detect voltage 2 min | 0.606V |
| Comp2 under voltage detect voltage 2 typ | 0.625V |