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Product Detailed Parameters
- Description：IC REG BUCK BOOST 5V 1.5A 8PDIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck, Boost
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：2V
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Current - Output：1.5A (Switch)
- Frequency - Switching：19kHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The LT1108CN8-5#PBF is a micropower DC/DC converter manufactured by Analog Devices Inc. It operates in boost, buck, or inverting topologies with an input voltage range of 2V to 30V. The device provides a fixed 5V output at up to 800mA. Key electrical parameters include a quiescent current of 110µA and a switching frequency of 19kHz. It is housed in an SOIC-8 package and functions within a temperature range of 0°C to +70°C.
Feature Summary
- Supports versatile step-up, step-down, and inverting conversion modes
- Requires only four external components for operation
- Delivers fixed 5V or 12V output options
- Designed for low power consumption applications
Applications
- Palmtop computer logic supply
- Battery-powered portable devices
- General purpose DC/DC conversion in space-constrained designs
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS status according to official documentation. Confirm the SOIC-8 package type matches design requirements. Ensure the fixed 5V output variant aligns with system voltage needs. Check for any obsolescence notices or lifecycle status updates from Analog Devices before finalizing procurement plans.
Selection Notes
Select this component when a fixed 5V output is required from varying input sources between 2V and 30V. It is suitable for applications prioritizing low quiescent current and minimal external component count. Consider the 19kHz switching frequency for EMI sensitivity and the 800mA output capability for load requirements. Verify thermal performance within the specified operating temperature range.
Part Context
The LT1108 series comprises micropower DC/DC converters designed for efficiency in small form factors. The CN8-5#PBF variant specifically denotes the commercial temperature grade, SOIC-8 package, and fixed 5V output configuration within the broader LT1108 family managed by Analog Devices.
Replacement Considerations
LT1108CS8-5#PBF: Same function in SOIC-8 package but industrial temperature grade (-40°C to +85°C). LT1108CN8-12#PBF: Identical package and grade but provides a fixed 12V output instead of 5V.
