SMB137C中文資料SUMMIT數(shù)據(jù)手冊PDF規(guī)格書

INTRODUCTION

The SMB137C is a programmable single-cell lithiumion/lithium-polymer battery charger designed for a variety of portable applications. Unlike conventional charging devices, the SMB137C’s high-efficiency switch-mode operation eliminates the low charge current and thermal problems of conventional linear solutions. In addition, the switching architecture in conjunction with programmability enables dramatically faster charging – TurboCharge? mode - from current limited inputs such as USB.

FEATURES

? Automatic Input Current Limit for universal USB/AC/DC adapter compatibility*

? Optional automatic power source detection per latest USB charging specification 1.2

? USB or AC input with automatic input selection and programmable input current limiting (USB2.0 compliant)

? Up to 750mA charging output from 500mA USB port or 1500mA from AC adapter using proprietary “TurboChargeTM Mode”

? Input/output CurrentPath? control allows system operation with deeply discharged/missing battery – no start-up delay

? “Low Battery Recovery” mode for >500mA startup from 100mA USB port with deeply discharged cells – no start-up delay*

? USB OTG, HDMI, MHL power support (up to 500mA @ +5V)

? Hardware programmable support for JEITA

? High-efficiency step-down regulator with 3MHz switching

? +4.35 to +6.0V input voltage range

? +18V input tolerance (non-operating)

? High-accuracy float voltage regulation: 1.0

? Digital programming of major parameters via I2C interface*

? Comprehensive protection features

? Tiny CSP-30 package

APPLICATIONS

? Smartphones

? Tablet PCs

? Portable Media Players

? Perfect Companion for MSM Chipsets