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

RT2101B

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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.

Applications

  • Low-Voltage, High-Density Power Systems
  • Distributed Power Systems
  • Point-of-Load Conversions
Key Spec.
RT2101B
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 (typ) (kHz) 1000.0
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
Features
  • 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
Datasheet
TitleLast UpdateShareDownload
2.95V to 6V Input, 2A Output, 2MHz, Synchronous Step-Down Converter2016/05/23
Technical Documents
TitleLast UpdateShareDownload
Automotive Product Selection Guide2020/12/30
Richtek Selection Guide [Oct., 2020]2020/12/30
Videos
TitleLast UpdateShareViews
How to estimate control loop bandwidth from the transient response time?2017/03/30 1354
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2021/01/21
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT2101BGQWWQFN3x3-161500 Not available Buy from Distributor
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