SMB135 - Summit Microelectronics

SMB135 USB/AC Input Li+ Battery Charger

SMB135 Programmable Switch-mode, USB/AC Input Li+ Battery Charger with TurboCharge™ Mode* FEATURES & APPLICATIONS INTRODUCTION • Programmable USB/AC Li-Ion battery charger • TurboChargeTM Mode: 750mA output from 500mA USB • High-efficiency current-mode PWM controller o 750kHz to 1.25MHz switching frequency o 0% to 100% duty-cycle • 4.35 to 6.5V input vol.

Features

& APPLICATIONS INTRODUCTION
• Programmable USB/AC Li-Ion battery charger
• TurboChargeTM Mode: 750mA output from 500mA USB
• High-efficiency current-mode PWM controller o 750kHz to 1.25MHz switching frequency o 0% to 100% duty-cycle
• 4.35 to 6.5V input voltage range
• Small 1.3 x 2.1 uCSPTM-15 package (0.4mm pitch)
• High-accuracy output voltage regulation: 1%
• Low reverse leakage current
• Digital programming of all major parameters via I2C interface (with several addresses) and non-volatile memory o Battery voltage set point o Pre-charge, fast charge, termination current o Fast charge vo.