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LTC1261LCS8#PBF, Switching Voltage Regulators Switched Cap Reg V Inverter
Semiconductors\Power Management ICs\Voltage Regulators & Voltage Controllers\Switching Voltage Regulators
LTC®1261L is a switched-capacitor regulated voltage inverter designed to provide a regulated negative voltage from a single positive supply. Three external capacitors are required, a 0.1µF flying capacitor and an input and output bypass capacitors. An optional compensation capacitor at ADJ (COMP) can be used to reduce the output voltage ripple. Each version of the LTC1261L will supply up to 20mA output current with guaranteed output regulation of ±4.5%. This LTC1261L includes an open-drain REG output that pulls low when the output is within 5% of the set value. Applications are GaAs FET bias generators, negative supply generators, battery-powered systems, single supply applications.
• Regulated negative voltage from a single positive supply
• REG pin indicates output is in regulation
• Adjustable output voltage from -1.552 to -1.448V (2.70V <= VCC <= 5.25V, 0mA <= IOUT <= 10mA)
• Supply voltage of 5.25V
• Requires only three or four external capacitors
• Internal oscillator frequency of 650KHz (VCC = 5V, VOUT = -4V)
• Quiescent current is typically 650µA
• Shutdown mode drops supply current to 5µA
• 8-lead plastic SO package
• 0°C to 70°C temperature range
| IC Case / Package | NSOIC |
| Количество Выводов | 8вывод(-ов) |
| Линейка Продукции | PW Series |
| Максимальная Рабочая Температура | 70°C |
| Максимальное Входное Напряжение | 5.25В |
| Максимальное Регулируемое Выходное Напряжение | -5В |
| Максимальный Выходной Ток | 20мА |
| Минимальная Рабочая Температура | 0°C |
| Минимальное Входное Напряжение | 2.7В |
| Минимальное Регулируемое Выходное Напряжение | -1.23В |
| Монтаж Микросхемы | SMD(Поверхностный Монтаж) |
| Номинальное Значение Фиксированного Выходного Напряжения | 0 |
| Топология (Общая Схема Соединений) | Инвертирующий |
| Уровень Чувствительности к Влажности (MSL) | MSL 1-Безлимитный |
| Current - Output | 20mA |
| Frequency - Switching | 650kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature | 0°C ~ 70°C(TA) |
| Output Configuration | Negative |
| Output Type | Adjustable |
| Package / Case | 8-SOIC(0.154", 3.90mm Width) |
| Supplier Device Package | 8-SO |
| Synchronous Rectifier | No |
| Topology | Charge Pump |
| Voltage - Input (Max) | 5.25V |
| Voltage - Input (Min) | 2.7V |
| Voltage - Output (Max) | -5V |
| Voltage - Output (Min/Fixed) | -1.23V |
