MIC2103

The MIC2103/04 are constant-frequency, synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2103/04 operates over an input supply range from 4.5V to 75V and can be used to supply up to 15A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200kHz to 600kHz.

Hyper Light Load™ architecture provides the same high-efficiency and ultra fast transient response as the Hyper Speed Control architecture under the medium to heavy loads, but also maintains high efficiency under light load conditions by transitioning to variable frequency, discontinuous-mode operation.

The MIC2103/04 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, internal soft-start to reduce inrush current, fold-back current limit, "hiccup" mode short-circuit protection and thermal shutdown. The MIC2103/04 is available in a 16-pin 3mm x 3mm MLF® package with a junction temperature operating range from -40°C to +125°C.

Features
  • Hyper Speed Control™ architecture enables
  • High delta V operation (V IN=75V and VOUT=1.2V)
  • Any Capacitor™ stable
  • 4.5V to 75V input voltage
  • 0.8V Reference Voltage with ±1% accuracy
  • 200kHz to 600kHz, programmable switching frequency
  • Hyper Light Load Control (MIC2103 only)
  • Hyper Speed Control (MIC2104 only)
  • Enable input, Power-Good output
  • Built-in 5V regulator for single-supply operation
  • Programmable current limit and fold-back “hiccup” mode short-circuit protection
  • 5ms internal soft-start, internal compensation, and thermal shutdown
  • Supports safe start-up into a pre-biased output
  • -40°C to +125°C junction temperature range
  • Available in 16-pin 3mm x 3mm MLF® package
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) 75 75
Minimum Output Voltage (V) 0.8 0.8
Maximum Output Voltage (V) 24 24
PFM, Discontinuous, Hyperlight load, or Skip Mode True True
Typical Tolerance (%) ±1 ±1
Duty Cycle Max (%) 0.85 0.85
Operating Frequency (Hz) 200K to 600K 200K to 600K
Power Good Signal True True
Soft Start True True
Internal Compensation True True
Internal Voltage Bias True True
Enable Pin True True
Current Limit / Short Circuit Protection True True
Input UVLO Typ (V) 4.2 4.2
Operating Supply Current (mA) 0.4 0.4
Iq Off (µA) 0.1 0.1
Package 3x3 QFN 3x3 QFN
Documents
MIC2103/04 - 75V, Synchronous Buck Controllers featuring Adaptive On-Time ControData Sheets11/05/20151414KB
Micrel AN 87 - Putting Adaptive Constant-ON-Time Buck ICs and Modules to Work in Inverting Buck-Boost ConvertersAppNote10/02/2015509KB
Micrel ANLPS207 - Putting Adaptive Constant-On-Time Buck ICs and Modules to Work in Inverting Buck-Boost ConvertersAppNote11/16/2015509KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC2103YML-TR16VQFN-40C to +125CT/R1.381.151.051.011.00
相关开发工具
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2103YML-TR0.0213000.80170016VQFN3x3x0.9mmNiPdAue4
MIC2103/04 - 75V, Synchronous Buck Controllers featuring Adaptive On-Time Contro MIC2104
Micrel AN 87 MIC2104
Micrel ANLPS207 MIC2103