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LT1107

Features: · Operates at Supply Voltages from 2V to 30V· Consumes Only 320mA Supply Current· Works in Step-Up or Step-Down Mode· Only Three External Components Required· Low-Battery Detector Comparator On-Chip· User Adjustable Current Limit· Internal 1A Power Switch· Fixed or Adjustable Output Volt...

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SeekIC No. : 004400331 Detail

LT1107: Features: · Operates at Supply Voltages from 2V to 30V· Consumes Only 320mA Supply Current· Works in Step-Up or Step-Down Mode· Only Three External Components Required· Low-Battery Detector Comparat...

LT1107 Data Sheet

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Part Number:
LT1107
Supply Ability:
5000

Price Break

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

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Upload time: 2024/12/21

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Product Details

Description



Features:

· Operates at Supply Voltages from 2V to 30V
· Consumes Only 320mA Supply Current
· Works in Step-Up or Step-Down Mode
· Only Three External Components Required
· Low-Battery Detector Comparator On-Chip
· User Adjustable Current Limit
· Internal 1A Power Switch
· Fixed or Adjustable Output Voltage Versions
· Space Saving 8-Pin MiniDIP or SO-8 Package


Application

· Palmtop Computers
· 3V to 5V, 5V to 12V Converters
· 24V to 5V, 12V to 5V Converters
· LCD Bias Generators
· Peripherals and Add-On Cards
· Battery Backup Supplies
· Cellular Telephones
· Portable Instruments


Pinout

Connection Diagram


Specifications

Supply Voltage (VIN) ...............................................36V
SW1 Pin Voltage (VSW1) .........................................50V
SW2 Pin Voltage (VSW2) .......................... 0.5V to VIN
Feedback Pin Voltage (LT1107) ................................ 5V
Sense Pin Voltage (LT1107-5, LT1107-12) .......... .. 36V
Maximum Power Dissipation ............................  500mW
Set Pin Voltage ......................................................5.5V
Maximum Switch Current ...................................... 1.5A
Operating Temperature Range
    LT1107C ................................................ 0 to 70
    LT1107M ........................................  55 to 125
Storage Temperature Range ................. 65 to 150
Lead Temperature (Soldering, 10 sec).................. 300


Description

The LT1107 is a versatile micropower DC/DC converter. The device requires only three external components to deliver a fixed output of 5V or 12V. Supply voltage ranges from 2V to 12V in step-up mode and to 30V in step-down mode. The LT1107 functions equally well in step-up, stepdown, or inverting applications.

The LT1107 is pin-for-pin compatible with the LT1111, but has a duty cycle of 70%, resulting in increased output current in many applications. The LT1107 can deliver 150mA at 5V from a 2AA cell input and 5V at 300mA from 24V in step-down mode. Quiescent current is just 320mA, making the LT1107 ideal for power-conscious batteryoperated systems. The 63kHz oscillator is optimized to work with surface mount inductors and capacitors.

Switch current limit can be programmed with a single resistor. An auxiliary gain block can be configured as a low-battery detector, linear post regulator, undervoltage lock-out circuit, or error amplifier.




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