LT1054 - Switched-Capacitor Voltage Converter with Regulator

Features

  • Available in Space Saving SO-8 Package
  • Output Current: 100mA (LT1054)
    125mA (LT1054L)
  • Reference and Error Amplifier for Regulation
  • Low Loss: 1.1V at 100mA
  • Operating Range:3.5V to 15V (LT1054)
    3.5V to 7V (LT1054L)
  • External Shutdown
  • External Oscillator Synchronization
  • Can Be Paralleled
  • Pin Compatible with the LTC1044/LTC7660

Typical Application

LT1054
LT1054
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Description

The LT1054 is a monolithic, bipolar, switched-capacitor voltage converter and regulator. The LT1054 provides higher output current than previously available converters with significantly lower voltage losses. An adaptive switch driver scheme optimizes efficiency over a wide range of output currents. Total voltage loss at 100mA output current is typically 1.1V. This holds true over the full supply voltage range of 3.5V to 15V. Quiescent current is typically 2.5mA.

The LT1054 also provides regulation, a feature not previously available in switched-capacitor voltage converters. By adding an external resistive divider a regulated output can be obtained. This output will be regulated against changes in both input voltage and output current. The LT1054 can also be shut down by grounding the feedback pin. Supply current in shutdown is less than 100µA.

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

The LT1054 is pin compatible with previous converters such the LTC1044/LTC7660.

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Packaging

N-8,SO-8

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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1054CN8 PDIP 8 C $3.25 $2.65 View
LT1054CN8#PBF PDIP 8 C $3.25 $2.65 View
LT1054CS8 SO 8 C $3.40 $2.80 View
LT1054CS8#PBF SO 8 C $3.40 $2.80 View
LT1054CS8#TR SO 8 C   $2.86 View
LT1054CS8#TRPBF SO 8 C   $2.86 View
LT1054CSW SO 16 C $4.00 $3.15 View
LT1054CSW#PBF SO 16 C $4.00 $3.15 View
LT1054CSW#TR SO 16 C   $3.21 View
LT1054CSW#TRPBF SO 16 C   $3.21 View
LT1054IN8 PDIP 8 I $4.75 $3.85 View
LT1054IN8#PBF PDIP 8 I $4.75 $3.85 View
LT1054IS8 SO 8 I $5.75 $4.50 View
LT1054IS8#PBF SO 6 I $5.75 $4.50 View
LT1054IS8#TR SO 8 I   $4.56 View
LT1054IS8#TRPBF SO 8 I   $4.56 View
LT1054ISW SO 16 I $5.75 $4.65 View
LT1054ISW#PBF SO 16 I $5.75 $4.65 View
LT1054ISW#TR SO 16 I   $4.71 View
LT1054ISW#TRPBF SO 16 I   $4.71 View
LT1054LCS8 SO 8 C $2.30 $2.00 View
LT1054LCS8#PBF SO 8 C $2.30 $2.00 View
LT1054LCS8#TR SO 8 C   $2.06 View
LT1054LCS8#TRPBF SO 8 C   $2.06 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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Applications

  • Voltage Inverter
  • Voltage Regulator
  • Negative Voltage Doubler
  • Positive Voltage Doubler
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Simulate

To simulate selected Linear Technology products, please download LTSpice / SwitcherCAD III. This powerful schematic capture and simulation tool includes macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

For other simulation tools, visit our Design Simulation and Device Models page.

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