Description

The KTC2110 features a high-efficiency, micropower synchronous boost for Lithium-Ion/Polymer battery applications. It offers true output disconnect to achieve a shutdown quiescent current of less than 1.0µA, extending battery life.

High efficiency over a wide output current range is achieved by selecting PWM/PFM mode automatically depending on the output load conditions.

A Pass Through mode allows to transfer the input power directly to output (not boosting) with over current protection.

The constant on-time design does not require any external compensation components, simplifying the design and providing ultra-fast transient response.

The inrush current-limiting feature minimizes the voltage droop on the battery supply when the device is turned on.

The KTC2110 is packaged in advanced, RoHS and Green compliant, 1.38mm x 1.38mm, 9-balls Wafer-Level ChipScale Package (WLCSP).

Features

  • Wide Input Voltage Range: 2.5V – 5.5V
  • Output Voltage Options: 3.0V – 5.7V with default 5.0V*.
  • Up to 1.0A Output Current
  • 3MHz PWM Switching Frequency
  • High Efficiency and Low Quiescent Current
    • Over 94% Efficiency
    • 1µA Shutdown Current
    • 35µA Quiescent Current in Pass Through
    • 60µA Quiescent Current in PFM Operation
  • ±2% DC Voltage Accuracy in PWM mode
  • Undervoltage Lockout (UVLO)
  • Short Circuit Protection
  • Hiccup Current Limit
  • Over Temperature Protection
  • Selectable Pass Through Mode or True Load Disconnect During Shutdown
  • Output Capacitor Pre-Charge and Soft-Start
  • Pb-free 9-Bump, WLCSP 1.38mm x 1.38mm
  • RoHS and Green Compliant
  • -40°C to 85°C Operating Temperature Range

Applications

  • Smartphones and Tablets
  • Mobile Internet Devices
  • USB OTG
  • Wearables
  • Portable Devices

Packaging Information

Package Dimensions Bumps Package Code
WLCSP33-9 1.38mm x 1.38mm x 0.62mm 9 CAA

Parameters

Vin (min)  Vin (max)  Vout Iout IQ Control FSW
2.5V 5.25V 3.0V – 5.7V: default 5.0V 1.0A 60µA EN 3.0MHz

Technical Documentation

Description Documents Type
DatasheetKTC2110-04bPDF
Package Outline DrawingWLCSP33-9 CAA PODPDF

Evaluation Tools

Documents Type
User ManualPDF
Quick Start GuidePDF
Bill of MaterialsXLSX
SchematicPDF
3D BoardPDF

Purchase

Part Number Marking Operating Temperature Package
KTC2110ECAA-TR NOXXYYZZZZ -40°C to +85°C WLCSP33-9
KTC2110ECAA-B-TR SNXXYYZZZZ -40°C to +85°C WLCSP33-9
Purchase Options
Buy from Digi-Key
Buy from Mouser