Datasheet Microchip MIC23156 — Datenblatt

MIC23156
1.5A, 3MHz Synchronous Buck Regulator
with HyperLight LoadВ® and I2C Control for
Dynamic Voltage Scaling General Description Features The MIC23156 is a high-efficiency 1.5A synchronous buck
В®
regulator with HyperLight Load mode and dynamic
2
voltage scaling control through I C. HyperLight Load
provides very high efficiency at light loads and ultra-fast
transient response. The ability to dynamically change the
output voltage and maintain high output voltage accuracy
make the MIC23156 perfectly suited for supplying
processor core voltages. An additional benefit of this
proprietary architecture is very low output ripple voltage
throughout the entire load range with the use of small
2
output capacitors. Fast mode plus I C provides output
2
voltage and chip enable/disable control from standard I C
2
bus with I C clock rates of 100kHz, 400kHz, and 1MHz. Input voltage: 2.7V to 5.5V Up to 1.5A output current
2 1MHz I C-controlled adjustable output
-VOUT = 0.7 to 2.4V in 10mV steps High output voltage accuracy (В±1.5% over temperature) Fast pin–selectable output voltage Programmable soft-start using external capacitor Ultra-low quiescent current of 30ВµA when not switching Thermal-shutdown and current-limit protection Safe startup in to pre-biased output Stable with 1ВµH output inductor and 2.2ВµF ceramic …