MIC23156

The MIC23156 is a high-efficiency 1.5A synchronous buck regulator with HyperLight Load® mode and dynamic voltage scaling control through I2C. 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 output capacitors. Fast mode plus I2C provides output voltage and chip enable/disable control from standard I2C bus with I2C clock rates of 100kHz, 400kHz, and 1MHz.

The MIC23156 is designed for use with 1µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm in height.

The MIC23156 is available in both 16-ball, 0.4mm Pitch, 1.81mm x 1.71mm wafer level chip scale (WLCSP), and 17-pin 2.8mm x 2.5mm MLF® packages with an operating junction temperature range of -40°C to +125°C.

Features
  • Input voltage: 2.7V to 5.5V
  • Up to 1.5A output current
  • 1MHz I2C-controlled adjustable output: VOUT = 0.7 to 2.4V in 10mV steps
  • High output voltage accuracy (±1.5% over temperature)
  • Fast pin–selectable output voltage
  • Programmable soft-start using external capacitor
  • Ultra-low quiescent current of 30µA when not switching
  • Thermal-shutdown and current-limit protection
  • Safe startup in to pre-biased output
  • Stable with 1µH output inductor and 2.2µF ceramic capacitor
  • Up to 93% peak efficiency
  • Junction temperature range of -40°C to +125°C
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) 0.7 0.7
Output Voltage Range Max (V) 2.4 2.4
Output Current (A) max 1 1
Quiescent Current (mA) typ 0.03 0.03
Switching Frequency (kHz) 3000 3000
Synchronous Rectifier Yes Yes
Operating Temp Range -40 to 125 -40 to 125
Duty Cycle Max (%) 0.8 0.8
SHUTDOWN Current (µA) (Typ) 0.1 0.1
Light Load Efficiency Mode Yes Yes
Documents
MIC23156 - 1.5A, 3MHz Synch Buck Regulator with HyperLight Load® and I2C ControlData Sheets11/05/20151500KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC23156-0YCS-TR16WLCSP-40C to +125CT/R**********
MIC23156-0YML-TR17VQFN-40C to +125CT/R**********
MIC23156-2YCS-TR16WLCSP-40C to +125CT/R**********
MIC23156-2YML-TR17VQFN-40C to +125CT/R**********
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RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC23156-0YCS-TR0.03100016WLCSP1.8x1.7x0.67mmSACe8
MIC23156-2YCS-TR0.03100016WLCSP1.8x1.7x0.67mmSACe8
MIC23156-2YML-T50.72335017VQFN2.5x2.8x0.9mmNiPdAue4
MIC23156-0YML-T50.72335017VQFN2.5x2.8x0.9mmNiPdAue4
MIC23156-2YML-TR0.72335017VQFN2.5x2.8x0.9mmNiPdAue4
MIC23156-0YML-TR0.72335017VQFN2.5x2.8x0.9mmNiPdAue4
MIC23156 - 1.5A, 3MHz Synch Buck Regulator with HyperLight Load® and I2C Control MIC23156
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