Regulator - LT1054, Voltage Converter w/ Regulator, 8-Pin DIP

Regulator - LT1054, Voltage Converter w/ Regulator, 8-Pin DIP

Regulator - LT1054, Voltage Converter w/ Regulator, 8-Pin DIP image 1
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$2.25
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LT1054 switched-capacitor voltage converter with regulator in an 8 pin DIP package. The LT1054 device is a bipolar, switched-capacitor voltage converter with regulator. It provides higher output current and significantly lower voltage losses than previously available converters. An adaptive-switch drive scheme optimizes efficiency over a wide range of output currents.

Total voltage drop at 100-mA output current typically is 1.1 V. This applies to the full supply-voltage range of 3.5 V to 15 V. Quiescent current typically is 2.5 mA.

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

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

The LT1054C is characterized for operation over a free-air temperature range of 0°C to 70°C.

Features

  • Output Current, 100 mA
  • Low Loss, 1.1 V at 100 mA
  • Operating Range, 3.5 V to 15 V
  • Reference and Error Amplifier for Regulation
  • External Shutdown
  • External Oscillator Synchronization
  • Devices Can Be Paralleled
  • Pin-to-Pin Compatible With the LTC1044/7660
SKU:
P-QLT1054
Item ID:
046354
Texas Instruments Part Number:
LT1054CP
Product Measurements by Type
Junction-to-ambient thermal resistance85 °C/W
Max.. Recommended Supply Voltage12 V
Max. FB/SD Input voltageVCC
Max. Input regulation 9VCC = 7 V to 12 V, RL = 500 Ω)25 mV
Max. Junction temperature125 °C
Max. Maximum switch current4 mA
Max. OSC Input voltageVref
Max. Oscillator frequency (VCC = 3.5 V to 15 V)35 kHz
Max. Output regulation (VCC = 7 V, RL = 100 Ω to 500 Ω)50 mV
Max. Output resistance (ΔIO = 10 mA to 100 mA)15 Ω
Max. Regulated output voltage (VCC = 7 V, TJ = 25°C, RL = 500 Ω)-5.2 V
Max. Storage temperature-55 to 150 °C
Max. Supply voltage16 V
Min. FB/SD Input voltage0 V
Min. OSC Input voltage0 V
Min. Oscillator frequency (VCC = 3.5 V to 15 V)15 kHz
Min. Recommended Supply Voltage3.5 V
Min. Regulated output voltage (VCC = 7 V, TJ = 25°C, RL = 500 Ω)-4.7 V
Supply current (VCC = 3.5 V)5 mA
Supply current (VCC = 15 V)200 mA
Supply current in shutdown100 μA
Typ. Input regulation 9VCC = 7 V to 12 V, RL = 500 Ω)5mV
Typ. Maximum switch current300 mA
Typ. Oscillator frequency (VCC = 3.5 V to 15 V)25 kHz
Typ. Output regulation (VCC = 7 V, RL = 100 Ω to 500 Ω)10 mV
Typ. Output resistance (ΔIO = 10 mA to 100 mA)10 Ω
Typ. Regulated output voltage (VCC = 7 V, TJ = 25°C, RL = 500 Ω)5 V
Packaging Information
Packaging Dimensions0.365 in. × 0.35 in. × 0.28 in.
Weight (Packaging)0.001 lbs.
PDF: DatasheetAll Models

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PDF: Datasheet Datasheet1.82 MB

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