LT1054CSW

• Product introduction

LT1054CSW Switched Capacitor Voltage Converter with Regulator

peculiarity

• Output Current: 100mA (LT1054)
  125mA (LT1054L)
• Reference and error amplifier for voltage regulation
• Low Loss: 1.1V at 100mA
• Operating Range: 3.5V to 15V (LT1054)
  3.5V to 7V (LT1054L)
• External downtime
• External oscillator synchronization
• Can be paralleled
• Pin to LTC^® 1044/ICL7660 compatible
• Available in SW16 and SO-8 packages

description

LT^® The 1054 is a monolithic, bipolar, switched capacitor voltage converter and regulator. The LT1054 delivers higher output current than previously available converters while consuming much lower voltage losses. An adaptive switching driver scheme optimizes efficiency over a wide output current range. The total voltage loss at 100mA output current is typically 1.1V. This is guaranteed over the entire supply voltage range (3.5V to 15V). Typical quiescent current is 2.5mA.

The LT1054 also provides voltage regulation, which is not available in conventional switched capacitor voltage converters. By adding an external resistive voltage divider, a stable output can be obtained. This output will be regulated accordingly based on changes in the input voltage and output current. Alternatively, the LT1054 can be powered down by grounding the feedback pin. Supply current in shutdown mode is less than 100μA.

The LT1054's internal oscillator operates at a nominal frequency of 25kHz. The oscillator pin can be used to adjust the switching frequency or externally synchronize the LT1054.

The LT1054 is pin compatible with previously introduced converters such as the LTC1044/ICL7660.