描述 Description

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 packageAPPLICATIONS
? Smartphones
? Tablet PCs
? Portable Media Players
? Perfect Companion for MSM Chipsets

特性 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