MCP16251

The MCP16251/2 is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. This family of devices provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell or three-cell alkaline, NiCd, NiMH and one-cell Li-Ion or Li-Polymer batteries.

Features
  • Up to 96% Typical Efficiency
  • 650 mA Typical Peak Input Current Limit: IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT IOUT > 250 mA @ 2.4V VIN, 3.3V VOUT IOUT > 225 mA @ 3.3V VIN, 5.0V VOUT
  • IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
  • IOUT > 250 mA @ 2.4V VIN, 3.3V VOUT
  • IOUT > 225 mA @ 3.3V VIN, 5.0V VOUT
  • Low Start-up Voltage: 0.82V
  • Operating Input Voltage: down to 0.35V
  • Adjustable Output Voltage Range: 1.8V to 5.5V
  • Maximum Input Voltage < VOUT < 5.5V
  • Automatic PFM/PWM Operation
  • PWM Operation at 500 kHz
  • Low Device Quiescent Current: <4 µA typical
  • Shutdown Current: 0.6 µA typical
  • Internal Synchronous Rectifier
  • Internal Compensation
  • Inrush Current Limiting and Internal Soft-Start
  • True Load Disconnect Shutdown
  • Input to Output Bypass Shutdown Option (MCP16252)
  • Anti-Ringing Control
  • Over-temperature Protection
  • SOT23-6 or 2x3 8-Lead TDFN packages
Parameter
Parameter Name Value Value
Regulator Type Step Up (Boost) Step Up (Boost)
Input Voltage Range Min (V) 0.82 0.82
Input Voltage Range Max (V) 5.5 5.5
Output Voltage Range Min (V) 1.8 1.8
Output Voltage Range Max (V) 5.5 5.5
Quiescent Current (mA) typ 0.004 0.004
Switching Frequency (kHz) 500 500
Synchronous Rectifier Yes Yes
Operating Temp Range -40 to 85 -40 to 85
Vfb (V) 1.23 1.23
Duty Cycle Max (%) 91 91
SHUTDOWN Current (µA) (Typ) 0.6 0.6
Light Load Efficiency Mode Yes Yes
Switch current (A) typ 0.65 0.65
Documents
MCP16251/MCP16252 Data SheetData Sheets03/27/20131270KB
AN1739 - Improving Battery Run Time with Microchip's 4 µA Quiescent Current MCP16251/2 Boost RegulatorAppNote07/14/2014191KB
MCP16251 and MCP1640B Synchronous Boost Converters Evaluation Board User's GuideUser Guides07/12/2013375KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MCP16251T-I/CH6SOT-23-40C to +85CT/R0.570.480.440.420.42
MCP16251T-I/MNY8TDFN-40C to +85CT/R0.610.500.460.440.44
相关开发工具
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MCP16251T-I/CH0.0170000.0466676SOT-23-Matte Tine3
MCP16251T-I/MNY0.0143000.2484858TDFN2x3x0.8mmNiPdAue4
MCP16251/MCP16252 Data Sheet MCP16252
MCP16251/MCP16252 Data Sheet ADM00458
AN1739 MCP16251
MCP16251 and MCP1640B Synchronous Boost Converters Evaluation Board User's Guide ADM00458