Products > Integrated Circuits (ICs) > Power Management ICs > RT4805WSC
RT4805WSC 16-UFBGA, WLCSP
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  • RT4805WSC
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RT4805WSC

IC REG BOOST ADJ 2A 16WLCSP

Manufacturer :
Richtek Technology Corporation
Package/Case :
16-UFBGA, WLCSP
Product Categories :
PMIC - Voltage Regulators - DC DC Switching Regulators
Datasheet:
RT4805WSC PDF
RoHs Status:
Lead free / RoHS Compliant
In-stock:
995

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RT4805WSC Product Details

The RT4805WSC allows systems to take advantage of new battery chemistries that can supply significant energy when the battery voltage is lower than the required voltage for system power ICs. By combining built-in power transistors, synchronous rectification, and low supply current; this IC provides a compact solution for systems using advanced Li-Ion battery chemistries. The RT4805WSC is a boost regulator designed to provide a minimum output voltage from a single-cell Li-Ion battery, even when the battery voltage is below system minimum. In boost mode, output voltage regulation is guaranteed to a maximum load current of 2A. Quiescent current in Shutdown Mode is less than 1μA, which maximizes battery life. The regulator transitions smoothly between Bypass and normal Boost Mode. The device can be forced into Bypass Mode to reduce quiescent current. The RT4805WSC is available in the WL-CSP-16B 1.67x1.67 (BSC) package.

Feature

  • 4 Few External Components: 0.47μH Inductor and 0603 Case Size Input and Output Capacitors
  • Input Voltage Range: 1.8V to 5V
  • Output Range from 2.85V to 4.4V► VSEL = L 3.2V► VSEL = H 3.4V
  • Maximum Continuous Load Current: 2A at VIN > 2.65V Boosting VOUT to 3.35V
  • Up to 96% Efficient
  • True Bypass Operation when VIN > Target VOUT
  • Internal Synchronous Rectifier
  • True Load Disconnect when Shut Down
  • Forced Bypass Mode
  • VSEL Control to Optimize Target VOUT
  • Short-Circuit Protection
  • I2C Controlled Interface
  • Ultra low Operating Quiescent Current
  • Small WL-CSP 16B Package

Applications

  • Single-Cell Li-Ion, LiFePO4 Smart-Phones or Tablet
  • 2.5G/3G/4G Mini-Module Data Cards

RT4805WSC Block Diagram
(Picture: Diagram)

Technical Parameters

Function Step-Up Voltage Output (Max) 4.4V
Output Configuration Positive Current Output 2A (Switch)
Topology Boost Frequency Switching 2.5MHz
Output Type Adjustable Synchronous Rectifier Yes
Number of Outputs 1 Operating Temperature -40??C ~ 85??C (TA)
Voltage Input (Min) 1.8V Mounting Type Surface Mount
Voltage Input (Max) 5V Package / Case 16-UFBGA, WLCSP
Voltage Output (Min/Fixed) 2.85V Supplier Device Package 16-WLCSP (1.67x1.67)

RT4805WSC Documents

RT4805WSC Related Products

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richtek
Richtek is an international analog IC design company specializing in providing customers with diverse and competitive products and complete power management solutions. Since its establishment, Rich...

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