Tps65261rhbr switching regulator is original and in stock
explain
Tps65261 and tps65261-1 are monolithic three-way Synchronous Step-Down (step-down) converters with 3A / 2A / 2A output current. The wide input power supply voltage range of 4.5V to 18V includes most intermediate bus voltages operating from 5V, 9V, 12V or 15V power buses. This converter with constant frequency peak current mode control is designed to simplify its application and enable designers to optimize the system according to the target application. An external resistor can be used to adjust the switching frequency of this converter between 250kHz and 2MHz. 180 ° out of phase operation between buck1 and buck2, 3 (in-phase operation of buck2 and 3) minimizes the requirements for input filters.
When the mode pin is connected to v7v and En1 / 2 / 3 pin is configured, tps65261 and tps65261-1 have an automatic power on timing. This device also has an open drain reset signal to monitor power failure.
Under light load, tps65261 automatically operates in pulse jump mode (PSM), while tps65261-1 operates in forced continuous current mode (FCC). PSM mode provides high efficiency by reducing switching loss under light load, while FCC mode reduces noise sensitivity and radio frequency (RF) interference.
This device features overvoltage protection, overcurrent and short circuit protection and overheating protection. The power supply normal pin is set to be valid when any output voltage is outside the regulated range.
characteristic
Working input power supply voltage range (4.5V to 18V)
Feedback reference voltage 0.6V ± 1%
Continuous output current 3A / 2A / 2A
Adjustable clock frequency from 250kHz to 2MHz
Dedicated enable and soft start pins for each buck converter
Automatic power on / off sequence
Pulse skip mode (PSM) under light load (tps65261 only)
Output voltage power supply normal indicator
Input voltage power failure indicator
Thermal overload protection
application
Digital television (DTV)
Set top box
Home gateway and access point network
wireless router
Safety monitoring
Tps65261 and tps65261-1 are monolithic three-way Synchronous Step-Down (step-down) converters with 3A / 2A / 2A output current. The wide input power supply voltage range of 4.5V to 18V includes most intermediate bus voltages operating from 5V, 9V, 12V or 15V power buses. This converter with constant frequency peak current mode control is designed to simplify its application and enable designers to optimize the system according to the target application. An external resistor can be used to adjust the switching frequency of this converter between 250kHz and 2MHz. 180 ° out of phase operation between buck1 and buck2, 3 (in-phase operation of buck2 and 3) minimizes the requirements for input filters.
When the mode pin is connected to v7v and En1 / 2 / 3 pin is configured, tps65261 and tps65261-1 have an automatic power on timing. This device also has an open drain reset signal to monitor power failure.
Under light load, tps65261 automatically operates in pulse jump mode (PSM), while tps65261-1 operates in forced continuous current mode (FCC). PSM mode provides high efficiency by reducing switching loss under light load, while FCC mode reduces noise sensitivity and radio frequency (RF) interference.
This device features overvoltage protection, overcurrent and short circuit protection and overheating protection. The power supply normal pin is set to be valid when any output voltage is outside the regulated range.
characteristic
Working input power supply voltage range (4.5V to 18V)
Feedback reference voltage 0.6V ± 1%
Continuous output current 3A / 2A / 2A
Adjustable clock frequency from 250kHz to 2MHz
Dedicated enable and soft start pins for each buck converter
Automatic power on / off sequence
Pulse skip mode (PSM) under light load (tps65261 only)
Output voltage power supply normal indicator
Input voltage power failure indicator
Thermal overload protection
application
Digital television (DTV)
Set top box
Home gateway and access point network
wireless router
Safety monitoring
Point of sale (POS) machines
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