LT1303CN8#PBF

Overview

The LT1303CN8#PBF is a micropower step-up DC/DC converter manufactured by Analog Devices Inc. It utilizes Burst Mode operation to achieve high efficiency in small, low-voltage battery-operated systems. The device accepts an input voltage range of 1.8V to 6V and provides an adjustable output voltage up to 25V. Key electrical parameters include a quiescent current of 120µA and a switch current capability of 1A with a saturation voltage of 170mV. It operates at a switching frequency of 155kHz and features a low-battery detector. The component is housed in an 8-lead PDIP package.

Feature Summary

• Integrates a low-battery detector providing an open-collector output when input voltage drops below a preset level
• Features an on-chip NPN power switch with low saturation voltage for efficient power conversion
• Supports shutdown mode to further reduce quiescent current consumption

Applications

• EL panel drivers
• Small low-voltage battery operated systems
• Step-up converters for multi-cell battery configurations

Procurement Notes

Verify the specific suffix CN8#PBF corresponds to the PDIP-8 through-hole package variant. Confirm RoHS compliance status as documentation indicates variations within the series. Ensure the application circuit supports the adjustable output configuration rather than fixed voltage variants. Cross-reference the manufacturer's official datasheet for the LT1303 family to validate pinout and thermal characteristics before finalizing procurement.

Selection Notes

Select this part for applications requiring micropower efficiency from single-cell or dual-cell batteries. The adjustable output allows flexibility for voltages up to 25V. Consider the PDIP package for through-hole assembly requirements. For higher output currents, evaluate the LT1305 or LT1302. Verify that the 155kHz switching frequency aligns with electromagnetic interference constraints in the target design.

Part Context

The LT1303 belongs to a family of micropower high-efficiency DC/DC converters designed for battery-powered devices. It is distinct from the LT1303-5, which offers a fixed 5V output. The CN8#PBF designation specifically identifies the PDIP-8 package version, differing from surface-mount SOIC options like the CS8. This component serves as a core power management element in portable electronics requiring minimal standby current.

Replacement Considerations

LT1303CS8#TR is a surface-mount equivalent with identical electrical performance but different packaging.