MIC22950

The Micrel MIC22950 is a high efficiency 10A integrated switch synchronous buck (step-down) regulator. The MIC22950 switching frequency is programmable from 400kHz to 2MHz, allowing the customer to optimize designing either for efficiency or for the smallest footprint. The MIC22950 achieves over 95% efficiency while still switching at 2MHz over a broad load range.

The ultra-high speed control loop keeps the output voltage within regulation, even under extreme transient load swings commonly found in FPGAs and low voltage ASICs. The output voltage can be adjusted down to 0.7V in order to address all low voltage power needs.

The MIC22950 features a full range of sequencing and tracking options. The enable and the delay pins, combined with the power good pin, allow multiple outputs to be sequenced in several ways during turn on and turn off. The RC (Ramp Control™) pin allows the device to be connected to any another device in the MIC22x00 family of products, to keep the output voltages within a certain delta V during start up.

The MIC22950 is available in a 32-pin 5mm x 5mm MLF® with a junction operating range from -40°C to +125°C

产品特性
  • 2.6V to 5.5V supply voltage
  • Fully integrated MOSFET switches
  • Adjustable output voltage option down to 0.7V
  • Output load current up to 10A
  • Full sequencing and tracking capability
  • Power On Reset
  • Efficiency >95% across a broad load range
  • Operating frequency programmable: 400kHz to 2MHz
  • Ultra-fast transient response
  • 100% maximum duty cycle
  • Micropower shutdown
  • Thermal shutdown and current-limit protection
  • Available in a 32-pin 5mm x 5mm MLF® package
  • -40°C to +125°C junction temperature range
技术参数
Parameter Name Value Value
Regulator Type Step Down (Buck) Step Down (Buck)
# of Outputs 1 1
Input Voltage Range Min (V) 2.6 2.6
Input Voltage Range Max (V) 5.5 5.5
Output Voltage Range Min (V) 0.7 0.7
Output Voltage Range Max (V) 5.5 5.5
Output Current (A) max 10 10
Quiescent Current (mA) typ 1 1
Synchronous Rectifier Yes Yes
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 0.7 0.7
Duty Cycle Max (%) 1 1
SHUTDOWN Current (µA) (Typ) 5 5
文档资料
MIC22950 - 10A Integrated Switch Synch Buck Reg with Freq Programmable to 2MHzData Sheets11/05/20151028KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC22950YML-TR32VQFN-40C to +125CT/R4.243.533.213.103.07
相关开发工具
器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC22950YML-TR0.0641000.21400032VQFN5x5x0.9mmNiPdAue4
MIC22950 - 10A Integrated Switch Synch Buck Reg with Freq Programmable to 2MHz MIC22950