LTC1873 - Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID

The LTC1873 features an onboard reference trimmed to 1% and delivers better than 1.5% regulation at the converter outputs over all combinations of line, load and temperature. Each channel can be enabled independently; with both channels disabled, the LTC1873 shuts down and supply current drops below 100µA.

Features

Two Independent PWM Controllers in One Package
Side 1 Output Is Compliant with Intel Desktop VRM 8.4 Specifications (Includes 5-Bit VID DAC)
1.3V to 3.5V Output Voltage with 50mV/100mV Steps
Two Sides Run Out-of-Phase to Minimize CIN
All N-Channel External MOSFET Architecture
No External Current Sense Resistors Required
Precison Internal 0.8V ±1% Reference
550kHz Switching Frequency Minimizes External Component Size
Very Fast Transient Response
Up to 25A Output Current per Channel
Low Shutdown Current: < 100µA
Small 28-Pin SSOP Package