LTC1775 is a high power no RSENSETM current mode synchronous step-down switching regulator, which has the highest efficiency current mode controller, no need for sense resistor, maximum current sense voltage of 300mV, stable high current operation, dual N-channel MOSFET synchronous drive, wide VIN range: 4V to 36V, wide VOUT range: 1.19V to VIN, ±1% 1.19V reference, programmable fixed frequency with injection lock, very low dropout operation: 99% duty cycle, forced continuous mode control pin, optional programmable soft start, pin selectable output voltage, foldback current limit, output overvoltage protection, logic controlled micropower shutdown: IQ < 30µA, available in 16-lead narrow SSOP and SO packages.
The LTC1775 is a high‑efficiency, current‑mode, synchronous step‑down switching regulator controller that operates without an external sense resistor. It supports a wide input voltage range and provides programmable output voltage options for applications such as notebook computers, automotive electronics, and battery chargers.
The document includes absolute maximum ratings, detailed electrical characteristics, pin functions, typical performance curves, package dimensions, and example application circuits. It also lists related Linear Technology parts for reference.
| Maximum Current Sense Voltage | 300 mV |
|---|---|
| Input Voltage Range | 4 V to 36 V |
| Output Voltage Range | 1.19 V to Viy |
| Oscillator Frequency (nominal) | 150 kHz |
| Package Type | 16‑Lead Plastic SSOP (Narrow 0.150) |
The LTC1775 allows a maximum current sense voltage of 300 mV.
It operates with an input voltage from 4 V up to 36 V.
The internal oscillator runs at a nominal frequency of 150 kHz.
The device is supplied in a 16‑lead plastic SSOP package.