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LT1054

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 LTC1044/7660APinoutS...

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SeekIC No. : 004400241 Detail

LT1054: 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 Oscillat...

LT1054 Data Sheet

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Part Number:
LT1054
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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 LTC1044/7660A


Pinout

Connection Diagram


Specifications

Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16 V
Input voltage range, VI: FB/SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to VCC
OSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 V to Vref
Junction temperature, TJ (see Note 2): LT1054C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125°C
LT1054I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  135°C
Package thermal impedance, qJA (see Notes 3 and 4): DW package . . . . . . . . . . . . . . . . . . . . . . . . 57°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55°C to 150°C
‡ Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The absolute maximum supply voltage rating of 16 V is for unregulated circuits. For regulation-mode circuits with VOUT 3 15 V, this
rating may be increased to 20 V.
2. The devices are functional up to the absolute maximum junction temperature.
3. Maximum power dissipation is a function of TJ(max), qJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) TA)/qJA. Operating at the absolute maximum TJ of 150°C can impact reliability.
4. The package thermal impedance is calculated in accordance with JESD 51.


Description

The LT1054 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 is typically 1.1 V. This holds true over the full supply-voltage range of 3.5 V to 15 V. Quiescent current is typically 2.5 mA.

It 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 is regulated against changes in both input voltage and output current. The LT1054 also can be shut down by grounding the feedback terminal. Supply current in shutdown is typically 100 mA.

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 device.

The LT1054C is characterized for operation over a free-air temperature range of 0°C to 70°C. The LT1054I is characterized for operation over a free-air temperature range of 40°C to 85°C.




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