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ADP1108

Features: Operates at Supply Voltages From 2.0 V to 30 VConsumes Only 110 mA Supply CurrentStep-Up or Step-Down Mode OperationMinimum External Components RequiredLow Battery Detector Comparator On-ChipUser-Adjustable Current LimitInternal 1 A Power SwitchFixed or Adjustable Output Voltage Versions...

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SeekIC No. : 004276258 Detail

ADP1108: Features: Operates at Supply Voltages From 2.0 V to 30 VConsumes Only 110 mA Supply CurrentStep-Up or Step-Down Mode OperationMinimum External Components RequiredLow Battery Detector Comparator On-C...

ADP1108 Data Sheet

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Part Number:
ADP1108
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

Operates at Supply Voltages From 2.0 V to 30 V
Consumes Only 110 mA Supply Current
Step-Up or Step-Down Mode Operation
Minimum External Components Required
Low Battery Detector Comparator On-Chip
User-Adjustable Current Limit
Internal 1 A Power Switch
Fixed or Adjustable Output Voltage Versions
8-Pin DIP or SO-8 Package


Application

Notebook/Palm Top Computers
3 V to 5 V, 5 V to 12 V Converters
9 V to 5 V, 12 V to 5 V Converters
LCD Bias Generators
Peripherals and Add-On Cards
Battery Backup Supplies
Cellular Telephones
Portable Instruments


Pinout

Connection Diagram


Specifications

Supply Voltage (VIN)  . . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V
SW1 Pin Voltage (VSW1)  . . . . . . . . . . . . . . . . . . . . . . . . +50 V
SW2 Pin Voltage (VSW2)  . . . . . . . . . . . . . . . . . . 0.5 V to VIN
Feedback Pin Voltage (ADP1108)  . . . . . . . . . . . . . . . .  +5.5 V
Sense Pin Voltage (ADP1108, 3.3, 5, 12)  . . . . . . . . . . . +36 V
Maximum Power Dissipation  . . . . . . . . . . . . . . . . . .   500 mW
Maximum Switch Current  . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
Operating Temperature Range  . . . . . . . . . . . .  0°C to 170°C
Storage Temperature Range  . . . . . . . . . . . 65°C to +150°C
Lead Temperature (Soldering, 10 sec)  . . . . . . . . . . . .+300°C


Description

The ADP1108 is a highly versatile micropower switch-mode dc-dc converter that operates from an input voltage supply as low as 2.0 V and typically starts up from 1.8 V. The ADP1108 can be programmed into a step-up or step-down dc-to-dc converter with only three external components. The fixed outputs are 3.3 V, 5 V and 12 V. An adjustable version is also available. In step-up mode, supply voltage range is 2.0 V to 12 V, and 30 V in step-down mode. The ADP1108 can deliver 150 mA at 5 V from a 2 AA cell input and 300 mA at 5 V from a 9 V input in step-down mode. Switch current limit can be programmed with a single resistor.

For battery operated and power conscious applications, the ADP1108 offers a very low power consumption of less than 110 µA. The auxiliary gain block available in ADP1108 can be used as a low battery detector, linear post regulator, under voltage lockout circuit or error amplifier.




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