LTC1628/LTC1628-PG are high efficiency dual 5V/3.3V step-down converters with various features such as high efficiency, 2-phase synchronous switching regulators, output voltage accuracy, dual N-channel MOSFET synchronous drive, power good output voltage monitor, adjustable soft-start current ramping, etc.
The LTC1628/LTC1628‑PG are dual‑phase synchronous step‑down switching regulator controllers that provide high efficiency, low output noise, and precise voltage regulation. They feature OPTI‑LOOP® compensation, ±1% output voltage accuracy, and selectable constant‑frequency or burst‑mode operation up to 300 kHz.
The device includes a power‑good monitor, remote voltage sense, and a range of protection features such as over‑voltage, over‑current, and latch‑off. It is offered in 28‑lead SSOP and 5 mm × 5 mm QFN packages and is suited for notebook computers, battery chargers, portable instruments, and DC power distribution systems.
| Input Voltage Range | 3.5 V to 36 V |
|---|---|
| Output Voltage Accuracy | ±1 % |
| Switching Frequency | 150 kHz to 300 kHz |
| Shutdown Current (RUN/SS pin) | 20 µA |
The controller operates with an input voltage from 3.5 V up to 36 V.
The output voltage is regulated to within ±1 % of the nominal value.
Yes, the device supports a programmable fixed frequency from 150 kHz to 300 kHz, or burst‑mode operation.