MIC2155 Overview
The MIC2155 and MIC2156 are a family of two-phase, single-output synchronous buck control ICs featuring small size, high efficiency, and a high level of flexibility. The ICs implement a 500kHz (MIC2155) and 300kHz (MIC2156) voltage mode PWM control, with the outputs switching 180° out of phase. The result of the out-of-phase operation is 1MHz (or 600kHz) input ripple with ripple current cancellation, minimizing the...
MIC2155 Key Features
- Synchronous buck control ICs with outputs switching 180° out-of-phase
- Remote sensing with internal differential amplifier
- 4.5V to 14.5V input voltage range
- Adjustable output voltages down to 0.7V
- 1% output voltage accuracy
- Starts up into a pre-biased output
- 500kHz PWM operation (MIC2155)
- 300kHz PWM operation (MIC2156)
- Adaptive gate drive allows efficiencies over 95%
- Adjustable current limit with no sense resistor
