MIC23155 _ BDTIC a Leading Distributor in China

MIC23155

The MIC23155 is a high efficiency 3MHz 2A synchronous buck regulator with HyperLight Load^® mode, Power Good output indicator, and programmable soft start. HyperLight Load^® provides very high efficiency at light loads and ultra fast transient response which makes the MIC23155 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 output capacitors. The tiny 2.5mm x 2.5mm Thin MLF^® package saves precious board space and requires only four external components.

The MIC23155 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm in height.

The MIC23155 has a very low quiescent current of 22µA and achieves a peak efficiency of 94% in continuous conduction mode. In discontinuous conduction mode, the MIC23155 can achieve 85% efficiency at 1mA.

The MIC23155 is available in a 10-pin 2.5mm x 2.5mm Thin MLF^® package with an operating junction temperature range from -40°C to +125°C.

Features

Input voltage: 2.7V to 5.5V
Output voltage: fixed or adjustable (down to 0.7V)
Up to 2A output current
Up to 94% peak efficiency
85% typical efficiency at 1mA
Power Good output
Programmable soft-start
22µA typical quiescent current
3MHz PWM operation in continuous conduction mode
Ultra fast transient response
Active output discharge when disabled
Low output voltage ripple
Fully integrated MOSFET switches
0.01µA shutdown current
Thermal shutdown and current limit protection
10-pin 2.5mm x 2.5mm Thin MLF®
-40°C to +125°C junction temperature range

Parameter

Parameter Name Value	Value
Regulator Type Step Down (Buck)	Step Down (Buck)
# of Outputs 1	1
Input Voltage Range Min (V) 2.7	2.7
Input Voltage Range Max (V) 5.5	5.5
Output Voltage Range Min (V) 0.62	0.62
Output Current (A) max 2	2
Quiescent Current (mA) typ 0.022	0.022
Switching Frequency (kHz) 3000	3000
Synchronous Rectifier Yes	Yes
Operating Temp Range -40 to 125	-40 to 125
Vfb (V) 0.62	0.62
Duty Cycle Max (%) 0.89	0.89
SHUTDOWN Current (µA) (Typ) 0.01	0.01
Light Load Efficiency Mode Yes	Yes