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High Efficiency, Low Quiescent, 2A Buck-Boost Converter

RT6158A

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The RT6158A converter is a high efficiency single inductor converter which can operate with wide input voltage 2.5V to 5V such as battery which is higher or lower than the output voltage and it can supply the load current up to 2A. The maximum peak current in the switches is limited to a typical value of 4.5A. Feedback loop is internally compensated for both Buck and Boost operation and it provides seamless transition between Buck and Boost modes and optimal transient response. The Buck-Boost operates at 2MHz typical switching frequency in full synchronous operation.

The RT6158A operates in Pulse Frequency Modulation (PFM) mode for increasing efficiency. The PFM mode can be disabled, forcing the RT6158A to operate at a fixed switching frequency operation at 2MHz. The RT6158A can also be synchronized with external frequency at MODE pin from 2.2MHz to 2.6MHz. The RT6158A output voltage is programmable using an external resistor divider; the output voltage range is from 2.1V to 5.2V.

Applications

Key Spec.
RT6158A
Status Active
Vin (min) (V) 2.5
Vin (max) (V) 5
Vout (min) (V) 2.1
Vout (max) (V) 5.2
Iout (max) (A) 2
Current Limit (typ) (A) 4.5
Freq (typ) (kHz) 2000
Ron_HS (typ) (mOhm) 20
Ron_LS (typ) (mOhm) 20
Iq (typ) (mA) 0.008
Features Enable Input;External Synchronization;Internal Compensation;OCP;OVP
Package Type WL-CSP2.07x2.33-25(BSC)
Features
  • Input Voltage Range : 2.5V to 5V
  • Adjustable Output Voltage : 2.1V to 5.2V by External Divided Resistors
  • Up to 2A Maximum Load Capability for VIN = 3V, VOUT = 3.5V
  • Up to 96% Efficiency (VIN = 4.2V, VOUT = 3.5V, ILOAD = 0.5A)
  • OCP, OVP, OTP, UVLO and SCP Function
  • 2MHz Switching Frequency
  • 5μA Non-Switching Low Quiescent Current
  • Forced PWM and Automatic PFM/PWM Mode Selection
  • Output Fast Discharge Function
  • Automatic / Seamless Step Up and Step Down Mode Transitions
  • 25-Ball WL-CSP Package
Datasheet
TitleLast UpdateShareDownload
High Efficiency, Low Quiescent, 2A Buck-Boost Converter2017/07/19
Technical Documents
TitleLast UpdateShareDownload
Power IC Solutions for IoT/Portable/Wearable/Battery-Powered Applications2018/11/15
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT6158AWSCWL-CSP2.07x2.33-25(BSC)3000 Request Buy from Distributor
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