MIC2151

The MIC2150/1 are simple 2-phase dual-output synchronous buck control ICs featuring small size and high efficiency. The ICs implement PWM control at 500kHz (MIC2150) or 300kHz (MIC2151), with the outputs switching 180° out of phase. The result of the out-of-phase operation is 1MHz input ripple frequency with ripple current cancellation, minimizing the required input filter capacitance. A 1% output voltage tolerance allows the maximum level of system performance. Internal drivers with adaptive gate drive allow the highest efficiency with the minimum external components.

A dual threshold enable pin, matched soft-start pins, and a power good output are provided, allowing a high level of control.

The MIC2150/1 are available in the small size 4mm x 4mm 24-pin MLF® package. The MIC2150/1 has a junction operating range from –40°C to +125°C.

产品特性
  • Dual Synchronous Buck Control IC with outputs switching 180° out-of-phase
  • 4.5V to 14.5V input voltage range
  • Adjustable output voltages down to 0.7V
  • 1% output voltage accuracy
  • MIC2150: 500kHz PWM operation
  • MIC2151: 300kHz PWM operation
  • Adaptive gate drive allows efficiencies over 95%
  • Adjustable current limit with no sense resistor ­ Senses low-side MOSFET current
  • Internal drivers allow 20A per phase
技术参数
Parameter Name Value Value
Supported Topologies Sync. Buck Sync. Buck
Supported Outputs 2 2
Minimum Input Voltage (V) 4.5 4.5
Maximum Input Voltage (V) 14.5 14.5
Minimum Output Voltage (V) 0.7 0.7
Typical Tolerance (%) ±1 ±1
Duty Cycle Max (%) 0.83 0.83
Operating Frequency (Hz) 300K 300K
Power Good Signal True True
Soft Start True True
Internal Voltage Bias True True
Enable Pin True True
Current Limit / Short Circuit Protection True True
Input UVLO Typ (V) 2.03 2.03
Operating Supply Current (mA) 4.2 4.2
Iq Off (µA) 50 50
Package 24/4x4 MLF 24/4x4 MLF
文档资料
MIC2150/1 - 2-Phase Dual Output PWM Synchronous Buck Control ICData Sheets11/05/2015829KB
器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2151YML-TR0.0422000.20400024VQFN4x4x0.9mmNiPdAue4
MIC2150/1 - 2-Phase Dual Output PWM Synchronous Buck Control IC MIC2151