MIC2198

The MIC2198 is a high power 500kHz synchronous buck DC-to-DC controller housed in a small 4mm x 4mm MLF® 12-lead package. The MIC2198 operates from a wide 4.5V to 32V input and can be programmed for output voltages from 0.8V to 6V. The wide input voltage capability makes the MIC2198 an ideal solution for point-of-load DC-to-DC conversion in 5V, 12V and higher systems.

The 500kHz switching frequency allows the use of a small inductor and small output capacitors. The current mode PWM control along with the external COMP pin allows for ease of stability compensation and fast transient response across a wide range of applications.

An all N-Channel synchronous architecture and powerful output drivers allow up to 20A of output current capability.

For higher efficiency at higher input voltages, refer to the 300kHz MIC2199.

The MIC2198 is available in a 12-pin 4mm x 4mm MLF® package with a junction temperature range from -40°C to 125°C.

Features
  • 4.5V to 32V input range
  • 4mm x 4mm MLF® package
  • 500kHz PWM operation
  • >90% efficiency
  • Output voltage adjustable down to 0.8V
  • 20A output current capability
  • Drives all N-Channel MOSFETs
  • Logic controlled micropower shutdown
  • Cycle-by-cycle current limiting
  • Adjustable undervoltage lockout
  • Frequency foldback overcurrent protection
Parameter
Parameter Name Value Value
Supported Topologies Sync. Buck Sync. Buck
Supported Outputs 1 1
Minimum Input Voltage (V) 4.5 4.5
Maximum Input Voltage (V) 32 32
Minimum Output Voltage (V) 0.8 0.8
Maximum Output Voltage (V) 6 6
Typical Tolerance (%) ±1 ±1
Duty Cycle Max (%) 0.76 0.76
Operating Frequency (Hz) 500K 500K
Internal Voltage Bias True True
Enable Pin True True
Current Limit / Short Circuit Protection True True
Operating Supply Current (mA) 3.5 3.5
Iq Off (µA) 0.1 0.1
Package 12/4x4 MLF 12/4x4 MLF
Documents
MIC2198 - 500kHz 4mm x 4mm Synchronous Buck ControllerData Sheets11/05/2015412KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC2198YML12VDFN-40C to +125CTUBE2.952.462.242.162.13
MIC2198YML-TR12VDFN-40C to +125CT/R2.952.462.242.162.13
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2198YML0.07233312VDFN4x4x0.9mmNiPdAue4
MIC2198YML-TR0.14720412VDFN4x4x0.9mmNiPdAue4
MIC2198 - 500kHz 4mm x 4mm Synchronous Buck Controller MIC2198