MIC26603

The Micrel MIC26603 is a constant-frequency, synchronous DC/DC buck regulator featuring adaptive on-time control architecture. The MIC26603 operates over a supply range of 4.5V to 28V. It has an internal linear regulator which provides a regulated 5V to power the internal control circuitry. MIC26603 operates at a constant 600kHz switching frequency in continuous-conduction mode and can be used to provide up to 6A of output current. The output voltage is adjustable down to 0.8V. HyperLight Load® architecture provides the same high-efficiency and ultra-fast transient response as the Hyper Speed Control™ architecture under medium to heavy loads, but also maintains high efficiency under light load conditions by transitioning to variable-frequency, discontinuous-mode operation. The MIC26603 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under voltage lockout to ensure proper operation under power-sag conditions, thermal shutdown, internal soft-start to reduce the inrush current, foldback current limit and "hiccup" mode short-circuit protection. The MIC26603 includes a Power Good (PG) output to allow simple sequencing.

产品特性
  • HyperLight Load® efficiency - up to 80% at 10mA
  • Hyper Speed Control™ architecture enables
  • High delta V operation (VIN = 28V and VOUT = 0.8V)
  • Small output capacitance
  • Input voltage range: 4.5V to 28V
  • Output current up to 6A
  • Up to 95% efficiency
  • Adjustable output voltage from 0.8V to 5.5V
  • ±1% FB accuracy
  • Any CapacitorTM stable - zero-to-high ESR
  • 600kHz switching frequency
  • Power Good (PG) output
  • Foldback current-limit and "hiccup" mode short-circuit protection
  • Safe start-up into pre-biased loads
  • 5mm x 6mm 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) 4.5 4.5
Input Voltage Range Max (V) 28 28
Output Voltage Range Min (V) 0.8 0.8
Output Voltage Range Max (V) 5.5 5.5
Output Current (A) max 6 6
Quiescent Current (mA) typ 0.45 0.45
Switching Frequency (kHz) 600 600
Synchronous Rectifier Yes Yes
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 0.8 0.8
Duty Cycle Max (%) 0.82 0.82
SHUTDOWN Current (µA) (Typ) 5 5
Light Load Efficiency Mode Yes Yes
文档资料
MIC26603 - 28V, 6A Hyper Light Load? Synchronous DC/DC Buck RegulatorData Sheets11/05/20151090KB
Micrel AN 39 - How to Power GSM/GPRS/EDGE/3G/HSPA M2M ModemsAppNote10/01/20151403KB
Micrel ANLPS300 - How to Power GSM/GPRS/EDGE/3G/HSPA M2M ModemsAppNote11/16/20151403KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC26603YJL-TR28VQFN-40C to +125CT/R2.361.971.791.731.71
器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC26603YJL-TR0.0816000.22718028VQFN5x6x0.9mmNiPdAue4
MIC26603-ZAYJL-TR0.0816000.22718028VQFN5x6x0.9mmNiPdAue4
MIC26603-ZYJL-TR0.0816000.22718028VQFN5x6x0.9mmNiPdAue4
MIC26603 - 28V, 6A Hyper Light Load? Synchronous DC/DC Buck Regulator MIC26603
Micrel AN 39 MIC261203
Micrel ANLPS300 MIC24053
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