2.95V to 6V Input, 2A Output, 2MHz, Synchronous Step-Down Converter


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The RT2101B is a high efficiency step-down converter and capable of delivering 2A output current over a wide input voltage range from 2.95V to 6V.

The RT2101B provides accurate regulation for a variety of loads with ±3% accuracy. For reducing inductor size, it provides up to 2MHz switching frequency. The efficiency is maximized through the integrated 45mΩ MOSFETs and 550μA typical supply current.

Under-voltage lockout voltage of the RT2101B is 2.7V, and it also provides external setting by a resistor network on the enable pin.

The RT2101B provides protections such as inductor current limit under-voltage lockout and thermal shutdown. The over temperature threshold is 145°C.

The RT2101B is available in WQFN-16L 3x3 package.


  • Low-Voltage, High-Density Power Systems
  • Distributed Power Systems
  • Point-of-Load Conversions
Status Active
Vin (min) (V) 2.95
Vin (max) (V) 6
Number of Outputs 1
Vout (min) (V) 0.827
Vout (max) (V) 3.6
Output Adj. Method Resistor
Iout (max) (A) 2
Current Limit (typ) (A) 3.4
Freq (min) (kHz) 700
Freq (max) (kHz) 2000
Ext Sync Yes
Ron_HS (typ) (mOhm) 45
Ron_LS (typ) (mOhm) 42
Iq (typ) (mA) 0.55
Features AEC-Q100 Qualified;Adjustable Frequency;Adjustable Soft-Start;Force PWM;OCP
Package Type WQFN3x3-16
  • AEC-Q100 Grade 2 Qualified
  • Integrated 45mΩ MOSFETs
  • Input Range : 2.95V to 6V
  • Adjustable PWM Frequency : 700kHz to 2MHz
  • Output Current : 2A
  • 95% Efficiency
  • Adjustable Soft-Start
  • Power Good Indicator
  • Enable Control
  • Under-Voltage Lockout
  • Current Limit
  • Thermal Shutdown
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2.95V to 6V Input, 2A Output, 2MHz, Synchronous Step-Down Converter2016/03/28
Technical Documents
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如何使用簡單工具對電源轉換器的穩定性進行測試評估?2017/03/30 311
Reference Design
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Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT2101BGQWWQFN3x3-161500 Not available Buy from Distributor